Training Manual UNICOSYSTEM.COM (800) Outlets are available in styles and finishes to match any décor.

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1 Training Manual UNICOSYSTEM.COM (800) Outlets are available in styles and finishes to match any décor.

THE UNICO SYSTEM WORKS WHERE OTHERS CAN T Zoning Individual rooms and zones can always be used with the Unico System, making for superior comfort and efficiency.

brings conditioned comfort to your entire home Compact Unico System Main Plenum Just 1/3 the size of conventional ducting just 7, 9, or 10 in diameter iseries Air Handler Provides full heating and

3 THE UNICO SYSTEM WORKS WHERE OTHERS CAN T Zoning Individual rooms and zones can always be used with the Unico System, making for superior comfort and efficiency. Supply Tubing The 90mm diameter of the Unico System is so small and flexible that it fits right into existing homes, weaving through ceilings, walls and floors The Unico System Fits anywhere and brings conditioned comfort to your entire home Compact Unico System Main Plenum Just 1/3 the size of conventional ducting just 7, 9, or 10 in diameter iseries Air Handler Provides full heating and cooling for the main house iseries Indoor Ductless System Provides heating and cooling for the addition or any unique zone Thermostat Allow you to set the temperature you want in any room iseries Outdoor Unit Provides efficient energy for air handlers and ductless system and it s the quietest unit on the market In order to provide unmatched comfort in older homes, the Unico System components are engineered for simple installation by Unico-trained technicians. Our installation minimizes the aesthetic impact on your home, maintaining its original charm.

4 IS18G050 IS24G065 IS30G080 IS36G ton 2.0 ton 2.5 ton 3.0 ton 1 Bulletin ( )

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7 iseries Indoor Units

9 INSTALLATION INSTRUCTIONS - Inverter Heat Pump System - OPERATING LIMITS Cooling Maximum conditions Heating Maximum conditions Outdoor temperature : 122 F (50 C) D.B. Outdoor temperature : Room temperature : 90 F (32 C) D.B. 73 F (23 C) W.B. Room temperature : 75 F (24 C) D.B. 65 F (18 C) W.B. 91 F (27 C) D.B. Cooling Minimum conditions Outdoor temperature : Room temperature : 5 F (-15 C) D.B. 50 F (10 C) D.B. 17 F (6 C) W.B. Heating Minimum conditions Outdoor temperature : -25 F (-32 C) D.B. Room temperature : 41 F (5 C) D.B. Outdoor - Indoor unit combination table System Type Single Split Dual Split Tri Split Quad Split Outdoor Unit IS18G050 IS24G065 IS30G080 IS36G110 IS18G050 IS24G065 IS30G080 IS36G110 IS24G065 IS30G080 IS36G110 IS30G080 IS36G110 Indoor Unit Size Match Circuit 1 Circuit 2 Circuit 3 Circuit 4 B B, C B, C B, C, D A A A B A A B A B B A A B A B B C A A A B A B B C A C B B A A A A A A A A B A A B B A A A A B A A B B A B B B A A A A B A A A A A A A B A A A B B A A B B B A 1, 2, 3, 4 = the refrigerant circuit connections on the outdoor unit A, B, C, D = indoor unit size as shown in the following table: Size A B C D Indoor Unit Model Number IS12MPA IS24MPB U1218L-1EA2AX M2430BL1-EA2 + M2430CL-A M3036BL1-EA2 + M3036CL-A Line set sizes on Page 4. Power Supply: V, 1 ph, ~ 60 Hz Bulletin Copyright 2015 Unico, Inc. (SAC )

10 IMPORTANT! Please read before installation This air conditioning system meets strict safety and operating standards. For the installer or service person, it is important to install or service the system so that it operates safely and efficiently. For safe installation and trouble-free operation, you must: Carefully read this instruction booklet before beginning. Follow each installation or repair step exactly as shown. Observe all local, state and national electrical codes. Pay close attention to all warning and caution notices given in this manual. The unit must be supplied with a dedicated electrical line. WARNING This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death. CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage. If necessary, get help These instructions are all you need for most installation sites and maintenance conditions. If you require additional help for a special problem, contact our customer service department for additional instructions. In case of improper installation The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document. SPECIAL PRECAUTIONS During installation, connect the refrigerant system and then the wiring; proceed in the reverse order when removing the units. WARNING When wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked, to ensure the grounding. Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury and death. Ground the unit following local electrical codes. The Yellow/Green wire cannot be used for any connection different from the ground connection. Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard. Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. Do not use multi-core cable when wiring the power supply and control lines. Use separate cables for each type of line. When transporting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers. When installing In a ceiling or wall Make sure the ceiling/wall is strong enough to hold the unitweight. It may be necessary to build a strong wooden or metal frame to provide added support.... In a room Properly insulate any tubing run inside a room to prevent "sweating", which can cause dripping and water damage to walls and floors.... In moist or uneven locations Use a raised concrete base to provide a solid level foundation for the outdoor unit. This prevents damage and abnormal vibrations.... In area with strong winds Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.... In a snowy area (for heat pump-type systems) Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents. When connecting refrigerant tubing Keep all tubing runs as short as possible. Use the flare method for connecting tubing. Apply refrigerant lubricant to the mating surfaces of the flare before connecting them; screw by hand and then tighten the nut with a torque wrench for a leak-free connection. Check carefully for leaks before starting the test run. NOTE: Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion, the refrigerant tubing for your particular model is specified as narrow tube for liquid, wide tube for gas. When servicing Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring. Keep your fingers and clothing away from any moving parts. Clean up the site after the work, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced. Ventilate the room during the installation or testing the refrigeration system; make sure that, after the installation, no gas leaks are present, because this could produce toxic gas and dangerous if in contact with flames or heatsources. Bulletin Copyright 2015 Unico, Inc. (SAC )

11 Installation site selection High Wall Indoor unit AVOID Direct sunlight. Nearby heat sources that may affect unit performance. Areas where leakage of flammable gas may be expected. Locations where large amounts of oil mist may occur (such as in kitchen or near factory equipment) because oil contamination can cause operation problems and may deform plastic surfaces and parts of the unit. Unsteady locations that will cause noise or possible water leakage. Locations where the remote control unit will be splashed with water or affected by dampness or humidity. Making holes in areas where electrical wiring or conduits are located. DO Select an appropriate position from which every corner of the room can be uniformly cooled. Select a sufficiently strong location to support the weight of the unit. Select a location where tubing and drain hose have the shortest run to the outside. Allow access for operation and maintenance as well as unrestricted air flow around the unit. Installation site selection - Outdoor unit AVOID Heat sources, exhaust fans. Direct sunlight. Damp, humid or uneven locations. Making holes in areas where electrical wiring or conduits are located. DO Choose places as cool as possible and well ventilated. Use lag bolts or equal to bolt down the unit, reducing vibration and noise. TOOLS REQUIRED FOR INSTALLATION (NOT SUPPLIED) 1. Standard screwdriver 7. Hacksaw 13. Torque wrench (Yellow Jacket 2. Phillips head screwdriver 8. Drill bits 5/16" (8 mm) dia. #60650 or equal) 3. Knife or wire stripper 9. Hammer 14. Adjustable Wrench 4. Tape measure 10. Drill 15. Reamer (for de-burring) 5. Level 11. Tube cutter 16. Hex key, 5mm 6. Sabre saw or hole saw 12. Tube flaring tool 17. Unico P/N: A02131-K01. Communication Tool for Troubleshooting and upgrading firmware (requires Windows PC) Bulletin Copyright 2015 Unico, Inc. (SAC )

12 ACCESSORIES SUPPLIED WITH THE OUTDOOR UNIT Item Qty Description 1 1 Adapter, reducer, 3/8M x 1/2F with washer and flare cap 2 1* Adapter, reducer, 1/2M x 3/8F with washer and flare cap 3 1 Cap, pipe, plastic 4 1 Connector, drain, 3/4 (18 mm) hose barb * The IS36G110 provides quantity of 2. The outdoor unit has two drain holes. If a drain tube is needed, snap connector into desired hole and slip plastic drain tube over the barb. Plug the other hole with the plastic cap ACCESSORIES SUPPLIED WITH THE INDOOR UNIT Indoor Unit Model I M3036CL1-A Item Qty Description 1 1 Adapter, splitter, 1/2F x 3/8F x 5/8M 2 1 Adapter, reducer, 1/4F x 3/8M with washer 2 1 IS12MPA IS24MPB Item Qty Description 1 1 Remote control 2 2 Battery, AAA 3 1 Remote cradle (for mounting) 4 2 Screws ADDITIONAL MATERIAL REQUIRED FOR INSTALLATION (NOT SUPPLIED) 1. Line set: Deoxidized annealed copper tube for refrigerant tubing connecting the units of the system; it has to be insulated with insulation, minimum thickness 5/16 inch (8 mm). Minimum tubing thickness should be inch (0.8 mm). Table 1. Line set Tubing Sizes, Outside Diameter INDOOR UNIT SIZE Model SMALL TUBE (LIQUID LINE) LARGE TUBE (VAPOR LINE) A IS12MPA 1/4" (6,35 mm) 3/8" (9,52 mm) B C IS24MPB U1218L-1EA2AX 1/4" (6,35 mm) 1/2" (12,70 mm) M2430BL1-EA2 + M2430CL-A D M3036BL1-EA2 + M3036CL-A 3/8" (9,52 mm) 5/8" (15,88 mm) 2. Refrigerant: R410A (if lineset length exceeds standard pre-charged amount) 3. Drain line (if needed): Plastic tubing (I.D. 3/4 inch [18 mm]). 4. Vacuum pump lubrication oil for flare connections (about 1 oz. [30g]). 5. Communication cable: 2-wire shielded cable, 18 ga. (minimum) 6. Electric wire: use insulated copper wires per local codes. 7. Tubing insulation Bulletin Copyright 2015 Unico, Inc. (SAC )

13 TUBING DESIGN LIMITS There are five rules for the refrigerant tubing related to length and height between components. #1: (Height) The highest indoor unit must be less than 32 ft (10 m) above the outdoor unit. #2: (Height) The lowest indoor unit must be less than 32 ft. (10 m) below the outdoor unit. #3: (Height) The highest indoor unit must be less than 19 ft. (6 m) above the lowest indoor unit. #4: (Length) The longest distance from any indoor unit to the outdoor unit must be less than L1, L2, L3, L4. #5: (Length) The sum total of distance of each indoor unit to the outdoor unit must be less than Ltot. INDOOR UNIT INDOOR UNIT L1 L2 maximum 19 ft (6 m) OUTDOOR UNIT maximum 32 ft (10 m) INDOOR UNIT L4 L3 INDOOR UNIT maximum 32 ft (10 m) IL00533a.cvx L Tot. = Sum of the length of all line sets (L1 + L2 + L3 +...) MAXIMUM LINE LENGTHS ALLOWED PRE-CHARGED (AS SHIPPED) WITH ADDITIONAL REFRIGERANT* Outdoor unit Number of IDU L Tot. L1, L2, L3, L4 L Tot. L1, L2, L3, L4 IS18G050 SINGLE-SPLIT 25 ft (7.5 m) - 65 ft (20 m) - DUAL-SPLIT 50 ft (15 m) 40 ft (12 m) 100 ft (30 m) 80 ft (25 m) SINGLE-SPLIT 65 ft (20 m) ft (35 m) - IS24G065 DUAL-SPLIT 100 ft (30 m) 80 ft (25 m) 150 ft (45 m) 100 ft (30 m) TRI-SPLIT 100 ft (30 m) 65 ft (20 m) 150 ft (45 m) 80 ft (25 m) SINGLE-SPLIT 100 ft (30 m) ft (50 m) - IS30G080 DUAL-SPLIT 130 ft (40 m) 100 ft (30 m) 210 ft (65 m) 100 ft (30 m) IS36G110 TRI-SPLIT 130 ft (40 m) 100 ft (30 m) 210 ft (65 m) 100 ft (30 m) QUAD-SPLIT 130 ft (40 m) 100 ft (30 m) 210 ft (65 m) 100 ft (30 m) ADDING REFRIGERANT * If additional refrigerant is required, add the following amount of R410-A: Lineset Size Additional Refrigerant Example: An IS18G050 as single-split with 1/4 x 3/8 lineset of 60 1/4 x 3/ oz/ft (15g/m) ft. The excess line length is 35ft (60ft - 25ft = 35ft). You must add 35ft x 0.16oz/ft = 5.6 oz. R-410A. 1/4" x 1/ oz/ft (20g/m) 3/8 x 5/ oz/ft (45g/m) No additional charge of compressor oil is necessary. Bulletin Copyright 2015 Unico, Inc. (SAC )

14 TUBE CONNECTIONS Single-Split (1 Indoor Unit) For single-split applications, always connect the indoor unit to Circuit 1 of the outdoor unit. IS18G EMIX PORT: SEE EMIX UNIT OR EMIX TANK INSTALLATION MANUAL IS24G IS30G Bulletin Copyright 2015 Unico, Inc. (SAC )

15 Single-Split (1 Indoor Unit) Continued IS36G ADAPTER, REDUCER, FLARE 1/4F X 3/8M INCL. WITH INDOOR UNIT 1 ADAPTER, SPLITTER 1/2F X 3/8F X 5/8M INCL. WITH INDOOR UNIT Bulletin Copyright 2015 Unico, Inc. (SAC )

22 OUTDOOR UNIT INSTALLATION A Minimum operation and maintenance area. Allow generous clearance for servicing and to avoid air recirculation. Air flow should be away from building. 12" (500) D Remove the side cover, to connect the refrigerant lines and wiring. Connect the refrigerant lines first. Then connect the power line and interconnecting wires to outdoor unit on the terminal strip and secure them with clamps. 16" (400) 12" (500) 80" (2000) 60" (1500) 80" (2000) 4" (100) Dimensions in inches (mm) B Provide a solid base for outdoor unit raised from the ground level. Fix unit to base using 4 anchor bolts. IS30G080 16" (400) 4" (100) 4" (100) E Use insulated copper tube. Cut approximate inches (30-50 cm.) longer than actual distance between units. min. 5/16" (8 mm) min. 5/16" (8 mm) C Heat pump drain connection. Use, if necessary, the accessories supplied. Remove plug and insert drain connection. Then attach plastic tube to the drain connection by slipping over the barbed end. Use 3/4 inch (18 mm) plastic tubing. Plug the other hole with the plastic cap. Insulation F Remove burrs at the ends of the copper tubes. Hold the tube end downward and be sure that no dirt falls into the tube. Bulletin Copyright 2015 Unico, Inc. (SAC )

23 G Insert flare nuts removed from the units, than make a flare at the end of copper tubes. I Tighten connections using a wrench and a torque wrench (Yellow Jacket #60650 or equal); apply specified torque (see table). H A good flare has the following characteristics: - inside surface is glossy and smooth - edge is smooth - tapered sides are of uniform length. Follow the instructions of the flaring tool to make the proper flare. Apply refrigerant lubricant to the matching surface of the flare and union before connecting them together. Avoid putting oil on the threads as much as possible as this could lead to over-tightening. Lubricate J TUBE DIA. 1/4" (6.35 mm) 3/8" (9.52 mm) 1/2" (12.7 mm) 5/8" (15.9 mm) TIGHTENING TORQUE (Approx.) lb ft ( kg-cm or N-m) lb ft ( kg-cm or N-m) lb ft ( kg-cm or N-m) lb ft ( kg-cm or N-m) Insulate tubes leaving connections uncovered for leak test. Insulate the connection after leak testing. approx. 1/8" (3 mm) 45 CAUTION To prevent refrigerant leaks, be sure to properly form the flare and to leak test the connection prior to wrapping the joint with insulation. To prevent the formation of condensation on the exterior of the connections, fully insulate the connections. Bulletin Copyright 2015 Unico, Inc. (SAC )

24 K Air purging of internal unit and refrigerant tubes. Connect the vacuum pump to the outside unit as shown in the figure. Air and moisture have undesirable effects on the refrigerant system. Evacuate the line set and indoor to 500 microns. The time required will vary with vacuum pump capacity. The time shown below is only for one specific vacuum pump capacity as shown. VACUUM PUMP CAPACITY 26.4 gal/h (100 /h) Tubing length: Tubing length less than 33 ft (10 m) longer than 33 ft (10 m) 10 min. or more 15 min. or more Bulletin Copyright 2015 Unico, Inc. (SAC )

25 L Connect the indoor units using, if required, the adapter on the low pressure valves. Remove caps from service valves of both tubes. Then start vacuum pump and let it run for the time indicated in the table in step K (vacuum 500 microns Hg abs.). TO EMIX EMIX UNIT FROM EMIX UNIT UNIT High pressure Low pressure UNIT UNIT M With vacuum pump still running close the low pressure knob on valve manifold. Then stop vacuum pump. Using a hex wrench, open the service valve on small tube, then close it after 10 seconds. Check tightness of all joints using liquid soap. Turn the service valves stem in counterclockwise to fully open the valves. At this point vacuum pump flexible hose can be disconnected. Replace bonnet and flare nut, tighten them to 15 lb-ft (200 kg-cm) with a torque wrench. Repeat what described from L to M for the second, third and fourth circuit. The indoor units have to be marked as indoor unit circuit 1, 2, 3 and 4. Be sure that the refrigerant connection to indoor unit circuit 1, 2, 3 or 4 corresponds to its own electrical connection. TO EMIX EMIX UNIT FROM EMIX UNIT UNIT UNIT UNIT Bulletin Copyright 2015 Unico, Inc. (SAC )

26 SERVICE VALVE INSTRUCTIONS Action Narrow tube service valve (2-way) Wide tube service valve (3-way) As shipped from factory. Valve is front-seated (closed) CLOSED O-ring * Valve cap Stem Bonnet Cap Evacuation with a vacuum pump CLOSED Valves are front-seated (closed). Connect line set and charging hose. Pressure check. Evacuate. * To measure pressure or charging. OPEN Valve is back-seated (open). Connect hose. Charge only in cooling mode. Measures low pressure in cooling. Measures high pressure in heating. * Normal operation OPEN Valves are back-seated (open). * Line Set Gauge port has a Schrader valve. * The service port on the wide tube service valve uses a Schrader core valve to access the refrigerant system. Therefore, be sure to use a hose connector which has a push-pin inside. NOTE: THE SERVICE VALVE REQUIRES A 5/16 Female SAE x 1/4" Male SAE HOSE ADAPTER. EXAMPLE: GRAINGER P/N: 3DXH5 (J/B MODEL QC-S5S) OR EQUAL P Complete insulation of refrigerant tubes; wrap with insulation tape. Fix and support tubes with brackets. Seal hole in the wall, if necessary. Bulletin Copyright 2015 Unico, Inc. (SAC )

27 SYSTEM WIRING DIAGRAM 1 INDOOR UNIT IS12MPA IS24MPB Be sure to ground one or both sides of the shielded communication cable. The shield ground wire is always uninsulated and is wrapped around the other wires. Sometimes the shield is braided. Disconnect or circuit breaker Field wire, cable, shielded, 18AWG(min.) Fuse or circuit breaker Field wire, line voltage Field wire, line voltage, ground Field wire, low voltage Field wire, low voltage, ground L2 L1 GND POWERSUPPLY AC V 1PHASE50/60 Hz 1 INDOOR UNIT U1218L-1EA2AX M2430BL1-EA2 + M2430CL-A M3036BL1-EA2 + M3036CL-A POWERSUPPLY AC V 1PHASE50/60 Hz CAUTION SDHVFAN-COIL UNITSMUSTHAVESEPARATE POWERSUPPLYFROM OUTDOORUNIT. POWERSUPPLY AC V 1PHASE50/60 Hz L2 L1 GND Bulletin Copyright 2015 Unico, Inc. (SAC )

28 2 INDOOR UNITS IS12MPA IS24MPB Disconnect or circuit breaker Field wire, cable, shielded, 18 AWG(min.) Fuseor circuit breaker Field wire, line voltage Field wire, line voltage, ground Field wire, low voltage Field wire, low voltage, ground POWERSUPPLY AC V 1PHASE50/60 Hz L2 L1 GND 2 INDOOR UNITS U1218L-1EA2AX M2430BL1-EA2 + M2430CL-A M3036BL1-EA2 + M3036CL-A POWERSUPPLY AC V 1PHASE50/60 Hz CAUTION SDHVFAN-COILUNITSMUSTHAVESEPARATE POWERSUPPLYFROM OUTDOORUNIT. POWERSUPPLY AC V 1PHASE50/60 Hz L2 L1 GND Bulletin Copyright 2015 Unico, Inc. (SAC )

29 3 INDOOR UNITS IS12MPA IS24MPB POWERSUPPLY AC V 1PHASE50/60 Hz L2 L1 GND Disconnect or circuit breaker Field wire, cable, shielded, 18 AWG(min.) Fuseor circuit breaker Field wire, line voltage Field wire, line voltage, ground Field wire, low voltage Field wire, low voltage, ground 3 INDOOR UNITS U1218L-1EA2AX M2430BL1-EA2 + M2430CL-A M3036BL1-EA2 + M3036CL-A POWERSUPPLY AC V 1PHASE50/60 Hz CAUTION SDHVFAN-COIL UNITS MUSTHAVESEPARATE POWERSUPPLYFROM OUTDOORUNIT. POWERSUPPLY AC V 1PHASE50/60 Hz L2 L1 GND Bulletin Copyright 2015 Unico, Inc. (SAC )

30 4 INDOOR UNITS IS12MPA IS24MPB L2 L1 GND Disconnect or circuit breaker Field wire, cable, shielded, 18 AWG(min.) Fuseor circuit breaker Field wire, line voltage Field wire, line voltage, ground Field wire, low voltage Field wire, low voltage, ground POWER SUPPLY AC V 1PHASE 50/ 60 Hz 4 INDOOR UNITS U1218L-1EA2AX M2430BL1-EA2 + M2430CL-A M3036BL1-EA2 + M3036CL-A POWERSUPPLY AC V 1PHASE50/60 Hz L1 L2 GND CAUTION SDHVFAN-COILUNITS MUSTHAVESEPARATE POWERSUPPLYFROM OUTDOORUNIT. POWER SUPPLY AC V 1PHASE 50/ 60 Hz Bulletin Copyright 2015 Unico, Inc. (SAC )

31 POWER SUPPLY Outdoor Units MODEL Power Supply Full Load Current, amps Minimum Circuit Ampacity (MCA) Maximum Overcurrent Protection (MOP) IS18G phase IS24G Hz IS30G V IS36G Indoor Units MODEL Power Supply Full Load Current, amps Minimum Circuit Ampacity (MCA) Maximum Overcurrent Protection (MOP) IS12MPA 0.5 * * IS24MPB 1 phase 0.5 * * U1218L-1EA2AX 60 Hz M2430BL1-EA2 + MB2430CL1-A V M3036BL1-EA2 + MB3036CL1-A * High Wall units are connected directly to outdoor unit. Do not fuse separately. ** SDHV air handlers MUST be fused separately. DO NOT POWER the SDHV air handlers from the outdoor unit. PUMP DOWN PROCEDURE Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit. A Connect a valve manifold to the charge port on a wide tube service valve, partially open it (1/4 turn). Let the air purge from the manifold. Fully close the narrow tube service valve all the way. B Turn on the unit's operating switch and start cooling operation. When the low-pressure gauge reading reaches 10 to 20 psi (0.5 to 1.0 kg/cm 2 ) close the wide tube valve and then quickly turn off the unit. Remove the valve manifold. Repeat the operations for each circuit At that time, PUMP DOWN has been completed and all refrigerant gas will have been collected in the outdoor unit. Discharge pressure (all modes) UNIT 4 UNIT 3 Suction pressure (cooling mode) Discharge pressure (heating mode) UNIT 2 DO NOT VENT! Do not vent R410A into the atmosphere. R410A is a fluorinated greenhouse gas, covered by Kyoto Protocol with Global Warming Potential (GWP) = Bulletin Copyright 2015 Unico, Inc. (SAC )

32 REMOTE CONTROL UNIT/INDOOR UNIT CHANNEL The remote communicates with the indoor unit on one of four different channels. Both need to be set to the same channel to talk. The default is Channel 1. If you have two indoor units in the same room and want to control them separately with their own controller, they must each use a different channel. Set the remote controller as shown in the table below. WARNING Disconnect the power 1. Disconnect the power to indoor unit. 2. Remove the batteries from the remote control unit. 3. Set the micro switches (see table). The switches are located in the battery compartment. 4. Insert the batteries in the remote control unit. 5. Set the channel of the indoor unit to match the remote control channel (see table). CHANNEL REMOTE CONTROLLER SETTINGS INDOOR UNIT SETTINGS WALL MOUNT UNIT SDHV FAN COIL UNIT * OFF CHANNEL 1 FACTORY DEFAULT 1=OFF 2=OFF 3= OFF 4=OFF 5=ON 6=ON SW1 SW1: 3=OFF 4=OFF Relay Board R B G Y1Y2 C JP1: NO JP2: NO SW3 CHANNEL 2 OFF SW1 SW1: 3=ON 4=OFF Relay Board R B G Y1Y2 C JP1: YES JP2: NO 1=ON 2=OFF SW3 JP1 CHANNEL 3 OFF SW1 SW1: 3=OFF 4=ON Relay Board R B G Y1Y2 C JP1: NO JP2: YES 1=OFF 2=ON SW3 JP2 CHANNEL 4 OFF SW1 SW1: 3=ON 4=ON Relay Board R B G Y1Y2 C JP1: YES JP2: YES 1=ON 2=ON SW3 JP1 JP2 * NOTE: When using an iseries remote, for SDHV units R-G must always be jumpered for all SDHV models. JP1: Jumper between R and Y1 JP2: Jumper between R and Y2 Bulletin Copyright 2015 Unico, Inc. (SAC )

33 OUTDOOR UNIT REFRIGERANT CIRCUIT NUMBER (Method A Using DIP switches) Set the refrigerant circuit number of the indoor unit to match the circuit number the refrigerant lines are connected to. First set the communication channels as described in the section above. Then perform the following: Disconnect the power of the indoor unit. Set the micro switches to match the circuit number the pipes are connected to (see table below). Switch on the indoor unit. At this point the system will operate with the new address. OUTDOOR UNIT CIRCUIT (PORT) WALL-MOUNT UNIT CONTROL BOARD INDOOR UNIT SDHV FAN COIL UNIT INDOORB CONTROL BOARD 1 FACTORY DEFAULT SW1 OFF SW1: 1=OFF 2=OFF J4 LEDS/DISPLAY SW2 1 ON 2 J5 HUMIDITY SENSOR SW1 ON 1 2 SW2: 1=OFF 2=OFF SW3 OFF SW2 ON SW1 ON 2 SW1 SW1: 1=ON 2=OFF SW2: 1=ON 2=OFF J4 LEDS/DISPLAY J5 HUMIDITY SENSOR SW3 OFF SW2 ON SW1 ON 3 SW1 SW1: 1=OFF 2=ON SW2: 1=OFF 2=ON J4 LEDS/DISPLAY J5 HUMIDITY SENSOR SW3 OFF SW2 ON SW1 ON 4 SW1 SW1: 1=ON 2=ON SW2: 1=ON 2=ON J4 LEDS/DISPLAY J5 HUMIDITY SENSOR SW3 Bulletin Copyright 2015 Unico, Inc. (SAC )

34 REFRIGERANT CIRCUIT NUMBER (Method B Using the iseries Remote) The circuit number can also be set by using the iseries remote. The DIP switches in the previous table should be set to OFF/OFF factory default. To set the circuit, follow these steps: 1. Power the indoor unit ON (for high wall units also turn on the outdoor unit where they get their power). 2. Set the remote controller according to the table below. 3. Press the FAN and IFEEL keys of the remote control at the same time and hold for more than 5 seconds, then release them while pointing the remote controller towards the indoor unit to be set. If the setting is correct, you will hear 4 BEEPS as confirmation and the indoor unit starts operating with the new address. button operating mode (COOL - HEAT) set point flap filter night mode / high mode settings to select the Circuit number Circuit 1 Circuit 2 Circuit 3 Circuit 4 AUTO AUTO AUTO AUTO 52 F (11 C) 54 F (12 C) 55 F (13 C) 57 F (14 C) AUTO AUTO AUTO AUTO ON ON ON ON OFF OFF OFF OFF NOTE: The remote is factory set to use Circuit 1. If the remote setting is changed, it will take priority when the DIP switches in Method A are set at the factory default (OFF/OFF). The DIP switches in Method A will ALWAYS take priority if not set at the factory default (OFF/OFF). To use Circuit 1, BOTH the DIP switches and the remote setting must be set to Circuit 1, which is the factory default. ALWAYS POWER OFF THE UNIT BEFORE CHANGING THE DIP SWITCHES! VERIFY COMMUNICATIONS After the wiring and piping is complete, verify that the system is fully communicating to each device. 1. Power ON the system. 2. Set the remote controller of unit 1 as follows (units 2, 3, and 4 must be OFF): Mode: Cooling Filter: ON Set point: 90 F (32 C) 3. Press FAN + IFEEL button for at least 5 seconds, pointing the remote control unit directly at the air conditioner receiver. System starts and runs for 3 minutes. During this operation TIMER LED is flashing, while OPERATION LED is ON. After 3 minutes operation: If the setting is right, the unit switches to COOL mode and stops (set point: 90 F [32 C]). The system is ready to operate. If the setting is wrong, the STANDBY lamp flashes; check the setting of indoor units and the connections of the refrigerant circuits. Bulletin Copyright 2015 Unico, Inc. (SAC )

35 REMOTE CONTROL FUNCTIONS The iseries indoor units have several functions only accessible with the remote control. The following table lists the available functions. Table of Special Functions Indoor Unit Code Function SDHV High Wall with iseries with RGYB Thermostat Thermostat 0 Reset MMI (+) 11 RPM limit (for Zoning) MMI (+) 22 Boiler backup changeover temperature MMI (+) 77 Remote temperature display (units of measure) Note: MMI requires that the remote is pointed towards the MMI board when making this selection. These functions are modified through the remote control Special Functions Menu (SFM) accessed by holding the Filter/Shift button for at least 7 seconds. The remote will display the last code selected. When first powered on or whenever the battery is replaced, the display will show 0. Use the + and buttons to select the code to change. Some codes have a submenu that is accessed immediately following the code selection using the same method. The submenu allows additional adjustment of the feature. If no key is pressed for 10 seconds, the remote will exit the SFM mode and the display will return to showing the temperature. Note: The Code for each of the functions listed above are on the positive side of the number line. However, the number displayed on the remote can be either positive (+) or negative (-) but the sign is not shown. To discern whether you are on the positive or negative side of the number line, press the + button once in the Special Functions Menu. If you are on the positive side, the plus key will increase the value. If you are on the negative side, the plus key will decrease the value. If you find that you are on the negative side, press the plus button until you pass through zero, then navigate to the function you want to adjust. TEMPERATURE DISPLAY (UNITS OF MEASURE) CODE 77 It is possible to change the temperature units on the remote from Celsius ( C) to Fahrenheit ( F) or back again. 1. Press the GREEN button to turn ON the remote. 2. Next, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 3. Press the + button until the number displayed reaches 77. The - button can also be used to reach 77, but this will not change the display from Celsius to Fahrenheit, or vice-versa. 4. To finish the switch, press and hold the Filter/Shift button for 7 seconds. This will cause the remote to exit the Special Functions mode. The display should now have switched between Celsius and Fahrenheit. 5. Repeating this process will cycle between Fahrenheit and Celsius display modes. F is not shown when displaying the temperature using Fahrenheit units. C will show only when temperature is in Celsius units. Shift Bulletin Copyright 2015 Unico, Inc. (SAC )

36 RESET ALL SPECIAL FUNCTIONS TO FACTORY DEFAULT CODE 0 All remote control custom functions can be reset to factory settings at any time. 1. If resetting the SDHV indoor unit, first press the button on the MMI board. This allows the MMI board to receive signals from the iseries remote for a period of five minutes. 2. Press the GREEN button to turn ON the remote. 3. Next, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 4. Press the + or - button until the number displayed reaches 0. Point the remote towards the MMI board. 5. To reset all settings, press and hold the Filter/Shift button for 6 seconds. This will cause the settings in the remote and the MMI to reset to the factory default. The MMI board will BEEP four times. If there is no BEEP, the change did not occur so you must repeat the process. SETTING THE RPM LIMIT (SDHV only, FOR ZONED DAMPER SYSTEMS) CODE 11 The SDHV blower control has a special feature to limit the maximum speed of the blower so that the blower does not overspeed when dampers are closed. This will maintain nearly constant blower static pressure to minimize (or eliminate) outlet noise for the remaining open zones. This same function can be enabled more simply by just pressing the MMI button twice (see zoning instructions in the SDHV setup section). 1. First press the button on the MMI board. This allows the MMI board to receive signals from the iseries remote for a period of five minutes. 2. Press the GREEN button to turn ON the remote. 3. Next, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 4. Press the + or - button until the number displayed reaches 11. Be sure the value shown is positive. Point the remote towards the MMI board. 5. Press and hold the Filter/Shift button for 7 seconds. This will cause MMI to enter into the submenu mode for a period of 2 minutes. The MMI board will BEEP once. 6. Again, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 7. Press the + or - button to show either 0 or 1 Set it to 0 to turn off the motor speed limit. Set it to 1 (positive) to set the motor speed limit. 8. Point the remote towards the MMI board. Hold the Filter/Shift button for 7 seconds. The MMI board will BEEP three times. If there is no BEEP, start from the beginning. If you do not hear a beep at the end of this process, the change was not made. This is most likely because the remote dropped out of the Special Functions Menu, usually because no buttons were pressed for 10 seconds. Simply repeat the process, making sure to proceed quickly between each step, and the process will complete successfully. If you are setting the limit (with the 1 option), then the blower will turn on. If the blower was already on, it will briefly stop and then turn back on. The blower will turn on and ramp up until the airflow setpoint is achieved. It will remember the speed and use this as the speed limit. When dampers are closed, the pressure will increase and try to increase the blower speed. The blower speed will be limited so that the airflow is reduced and nearly constant pressure maintained. Bulletin Copyright 2015 Unico, Inc. (SAC )

37 BOILER CHANGEOVER SETPOINT (SDHV only) CODE 22 FOR SINGLE-SPLIT SYSTEMS ONLY The SDHV blower control has a special feature switch from heat pump operation to a backup heat source at a specific outdoor temperature. The backup heat source is activated using the AUX output. If the backup heat source is a hot water coil, the AUX output can be used to turn on a boiler, pump, or valve. This feature is enabled by adding a jumper on the board (see next section). The changeover set point is 32 F by default so that the system will turn off the heat pump and turn on the AUX switch when the outdoor temperature falls to 32 F (0 C) or below. The system will shut off the AUX output and return to heat pump operation when the temperature reaches 5 F (3 C) above the setpoint. The changeover setpoint can be changed even if boiler changeover jumper is not installed. The procedure is as follows: 1. First press the button on the MMI board. This allows the MMI board to receive signals from the iseries remote for a period of five minutes. 2. Press the GREEN button to turn ON the remote. 3. Next, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 4. Press the + or - button until the number displayed reaches 22. Be sure the value shown is positive. Point the remote towards the MMI board. 5. Press and hold the Filter/Shift button for 6 seconds. This will cause MMI to enter into the submenu mode for a period of 2 minutes. The MMI board will BEEP once. 6. Again, press and hold the Filter/Shift button for 7 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. The remote display is temperature in Fahrenheit units. 7. Press the + or - button until the number displayed is the setpoint value you want. 8. Point the remote towards the MMI board. Press and hold the Filter/Shift button for 6 seconds. This will set the changeover setpoint and exit the MMI from the submenu mode. The MMI board will BEEP once. If you do not hear a beep at the end of this process, the change was not made. This is most likely because the remote dropped out of the Special Functions Menu, usually because no buttons were pressed for 10 seconds. Simply repeat the process, making sure to proceed quickly between each step, and the process will complete successfully. ENABLE BOILER CHANGEOVER FUNCTION (SDHV only) FOR SINGLE-SPLIT SYSTEMS ONLY In order to allow the system to operate with a boiler backup, install a jumper plug on the J5 (Humidity Sensor) connector. The jumper plug (Unico part no. A02009-G01) ships with the control box. The plug has a single wire to jump between pins 1 and 3 of the connector. The changeover occurs at a specific outdoor temperature. The default setpoint for this is 32 F (0 C). When enabled, the boiler will turn on when the outdoor temperature is 32 F (0 C) or less. The system will change back to heat pump mode once the outdoor temperature increases by 5 F (3 C) above the setpoint. If using the default setpoint, the system will switch to heat pump at 37 F (2.8 C). Once the indoor setpoint has been reached and the boiler shuts off, it will not turn on again for at least 5 minutes Boiler changeover enable jumper plug J4 LEDS/DISPLAY SW2 ON 1 2 J5 HUMIDITY SENSOR SW1 ON 1 2 Connect Boiler changeover plug to J5 Humidity Sensor connector The boiler is enabled using the 24VAC AUX output of the thermostat relay board. Connect the AUX and Common outputs to the boiler or install a 24VAC isolation relay to switch on the boiler. Alternately or additionally, the AUX can be used to turn on a pump or valve. Bulletin Copyright 2015 Unico, Inc. (SAC )

38 P6 O G Y1 Y2 Thermostat Adapter (Relay Board) P7 A01837-G01 P7 S1 S2 S3 AUX LEGEND LED LIGHTS INPUTS (FROM THERMOSTAT) O: COOLING MODE G: FAN ONLY Y1: LOW STAGE HEAT/COOL Y2: HIGH STAGE HEAT/COOL S1: STAGE 1 AUXILIARY HEAT S2: STAGE 2 AUXILIARY HEAT S3: STAGE 3 AUXILIARY HEAT AUX: (FUTURE USE) PLUGS P6: THERMOSTAT OUTPUT TO INDOORB P7: AUXILIARY INPUT FROM INDOORB P4: POWER, 24VAC TERMINAL BLOCK: THERMOSTAT CONNECTIONS R: POWER (24V) B: REV. VALVE (ENERGIZE ON HEAT) Y1: STAGE 1 HEAT/COOL Y2: STAGE 2 HEAT/COOL C: POWER (COMMON) TB1 TB2 P4 PWR OUTPUTS (24V, 2A MAX) C: COMMON S1: STAGE 1 AUXILIARY HEAT S2: STAGE 2 AUXILIARY HEAT S3: STAGE 3 AUXILIARY HEAT AUX: (FUTURE USE) FUSE F1: 2A R B G Y1 Y2 C C S1 S2 S3 AUX 24VAC IL00541.cvx Bulletin Copyright 2015 Unico, Inc. (SAC )

39 SDHV UNIT SETUP The SDHV fan coil unit is compatible with either a wireless remote thermostat (included) or with a standard 24V thermostat (field supplied). 1. Disconnect the power of the indoor unit 2. Connect the Indoor Coil Temperature (ICT) and Return Air Temperature (RAT) sensors. The sensors are mounted to the coil so you must route the wires into the control box. The plugs on the control board are labeled J15 (ICT 1) and J14 (RAT). Refer to the wiring schematic and board layout for location. 3. Set the SDHV model size using SW1 and SW2 switches on the control board. INDOOR UNIT STANDARD OR iseries THERMOSTAT SW2 SW1 ON ON 1218 FACTORY DEFAULT J4 LEDS/DISPLAY 1 2 J5 HUMIDITY SENSOR 1 2 SW1 1=OFF 2=OFF SW2 ON SW1 ON SW1 1=ON 2=OFF J4 LEDS/DISPLAY J5 HUMIDITY SENSOR SW2 ON SW1 ON SW1 1=OFF 2=ON J4 LEDS/DISPLAY J5 HUMIDITY SENSOR SW2 ON SW1 ON SW1 1=ON 2=ON J4 LEDS/DISPLAY J5 HUMIDITY SENSOR 4. Connect the thermostat. The instructions for this depend on which thermostat is being used. If using iseries Wireless Remote Thermostat 1. Be sure there is no jumper on the terminals labeled STD T-STAT. 2. Connect the Infrared (IR) receiving base to the LEDS/DISPLAY plug on the IndoorB control board. 3. Add a jumper wire on the relay board between R and G. This can be used for remote on/off. 4. Set the correct model on the IndoorB using the instructions in the next section. If using Standard Heat Pump Thermostat 1. Install a jumper on the terminals labeled STD T- STAT (see wiring diagram) 2. Connect the MMI board to the LEDS/DISPLAY plug 3. Remove the jumper wire on the relay board between R and G 4. Connect your thermostat the relay board 5. Set the correct model on the IndoorB using the instructions in the next section. Bulletin Copyright 2015 Unico, Inc. (SAC )

40 5. Verify the number of outlets matches the maximum air flow from the following table. Factory set airflow Thermostat Type Model Airflow, CFM (m3/h) RGBY G Y1 Y2 -- iseries Remote Low Med High Auto range (340) 300 (510) 400 (680) ( ) (510) 450 (765) 625 (1060) ( ) (680) 550 (935) 750 (1275) ( ) 6. Connect the supplemental heater (available only when using standard heat pump thermostat) Electric Furnace Size Model Maximum Electric Furnace Size Low Speed (Y1) High Speed (Y2) U1218L-1EA2** 5 kw 7.5 kw M2430BL1-EA2 + M2430CL1-A 7.5 kw 10 kw M3036BL1-EA2 + M3036CL1-A 10 kw 15 kw Based on 100 F heat pump supply temperature and 160 F maximum heater supply temperature The maximum allowed size is shown in the table above. Auxiliary heat for electric furnace or hot water can be controlled by either the iseries control (S1, S2, S3) outputs, or controlled by the thermostat. To control auxiliary heating with the iseries control, connect the auxiliary heating to the three 24VAC output terminals labelled S1, S2, and S3 on the Relay Board. These are enabled with the following rules: The system must be turned on, and have been running in heating mode for 20 minutes without satisfying the thermostat. Every 20 minutes that the unit is on it activates one additional output in this sequence (S1, S2, S3). If the system exits the AUX heat mode, the timer will reset. Zone Damper Systems (only when using standard heat pump thermostat) Setup the system as if using standard 24V thermostats with a zone damper system. The zone damper controller appears to the iseries control like a standard 24V thermostat. For zone damper systems it is necessary to set the maximum motor speed to prevent over-speeding of the motor as dampers are closed so that the remaining open outlets are not noisy. To set the maximum motor speed, follow these steps: 1. Open all dampers. 2. Press the button on the MMI board once. Either the RED or GREEN LED will come ON to indicate the status of the maximum limit. If the RED LED is ON, then the maximum RPM is not set. If the GREEN LED is ON, then the maximum RPM is set. 3. Press the button a second time to enter into the learning mode (programming mode). The RED LED will blink for 30 seconds and the blower will slowly ramp up. At the end of 30 seconds, the maximum RPM will be set and the RED LED will go out and the GREEN LED will be ON. The blower will ramp back down. This step can be repeated by pressing the button again. After an additional 20 seconds the system will return to Normal state (Step 1). 4. To erase the maximum speed setting and return to the default (factory) setting, press and hold button for 3 seconds after step 2. The GREEN LED will go out and the RED LED will be ON. After 20 seconds the system will return to Normal mode (step 1). LED Status Description SOLID Maximum RPM is not set LED 1 (Red) OFF Maximum RPM is already set BLINKING System is learning the maximum RPM LED 2 (Blue) SOLID In programming mode OFF Normal operation LED 3 (Green) SOLID Maximum RPM is set OFF Maximum RPM is not set Bulletin Copyright 2015 Unico, Inc. (SAC )

44 Model IS36G110 Electric wiring diagram symbols Symbol Description Symbol Description CCH Crankcase Heater OLR Overload relay CM Compressor Motor PR Power relay C1,2,3 Capacitor REC. ASSY Receiver Assy DEF THERMO Defrost Thermostat RV Reversing Valve (4-way) EEV 1, 2, 3, 4 Electronic Expansion Valve (indoor unit) RY Relay EEV BP Electronic Expansion Valve (outdoor coil) SR Starting relay EMI Filter Electromagnetic Interference filter SSR Solid state relay FLP Flap motor SV Solenoid valve FM Outdoor Fan motor SW. ASSY Switch Assy FMI Indoor Fan motor TC, TOA Thermistor JP1, JP2, JP3 Jumpers (factory) THERMO Thermostat LM Louver motor TP Terminal plate MG Magnetic contactor TR1 Power Transformer NF Noise filter 47C Negative Phase relay Bulletin Copyright 2015 Unico, Inc. (SAC )

45 Electronic Expansion Valve (EEV) Driver board The outdoor unit includes two circuit boards: the main board and the electronic expansion valve driver board. The EEV driver board controls the expansion valves. EEV driver board for the IS18G EEV driver board for IS24G065, IS30G080, and IS36G110 (color coded plugs) Bulletin Copyright 2015 Unico, Inc. (SAC )

46 LED1 (GRN) LED2 (RED) LED3 (BLU) SDHV UNIT WIRING DIAGRAMS AND BOARD LAYOUT FAN MOTOR RED BLK G/Y A01472-G01 BRN BRN BRN BRN PUR Set switch 1 (SW1) to match the model of the indoor unit. A01473-G01 RED SDHV SW1 Model 1 2 * 1218 Off Off 2430 On Off 3036 Off On 3642 On On * Factory default Refrigerant SW2 Connection 1 2 * Circuit 1 Off Off Circuit 2 On Off Circuit 3 Off On Circuit 4 On On * Factory default Set switch 2 (SW2) to match the outdoor port for the refrigerant connections. BLK ORG YEL BLU J2 MOTOR COMM (WHT) For use with iseries thermostat (optional) VLB A01833-G01 REMOTE/IR RECEIVER KIT A01861-K01 REMOTE IR RECEIVER C1 C2 OUTDOORUNIT TERMINALBLOCK PNK Cable 30 FT (10m) A REMOTE CONTROL A GRN YEL BLK BLU ORG GRN RED RED J1 OUTPUT (WHT) THERMOSTAT HEATER R B G Y1 Y2 C C S1S2 S3 F1 A01845-G01 YEL YEL BLK BLK BLK BLK J2 INPUT (WHT) J3 +24V (WHT) BLU RELAY BOARD A01837-G01 TRANSFORMER A01846-G01 BLK BLK YEL BLK BLK J11 J17 JP1 JP2 J3 J16 J5 STEP ICT 2 (BLK) (BLK) +12V RS232 HUMIDITY MOTOR 1 (YEL) SW1 SW2 FILTER (WHT) SENSOR ON ON (WHT) (RED) (WHT) JP3 JP4 INDOORB A01832-G01 RS232 J18 RS485 J8 L J9 N WHT BLU YEL GRN J10 EARTH G/Y BLK RED A01851-G01 BLU RED J20 COMM (BLK) J1 WHT J3 WHT For use with INDOORB POWER COMM standard MMI thermostat LED/BUTTON (not A01865-G01 A01850-G01 A01849-G01 included) J21 J24 INPUT I/O 0-10V J22 (GRN) (WHT) (WHT) A01928-G01 A01852-G01 ORG GRN BLK WHT RED J2 DRAIN PUMP (WHT) A01853-G01 J1 OUTPUT CONTACTS (RED) A01932-G01 A01856-G01 J15 ICT 1 (WHT) J4 LEDS/DISPLAY (WHT) BLK BLK A1855--G01 J25 DAMPER J14 RAT (GRN) 1 2 BLK BLK A01854-G01 WIRE COLORS BLU = BLUE BLK = BLACK G/Y = GREEN/YELLOW GRN = GREEN ORG = ORANGE PNK = PINK PUR = PURPLE RED = RED WHT = WHITE YEL = YELLOW Coil JP1 and JP2 location on IndoorB JP2 BLU RED 1 2 JP1 1 2 BLK RED COM 208V 230V ORG RED BLK ORG RED BLK A01929-G01 RED ORG PUR L1 L G/Y L2 N C1 C POWER SUPPLY G/Y BLK RED OUTDOOR UNIT BLK STD T-STAT JP6 BLK BLK BLK BRN BLU FLOAT SWITCH JP7 DRAIN PUMP BLK BLK ALARM BLK BLK BLK BLK TH2 (RAT) A01843-G01 TH1 (COIL) A01844-G01 J4 LEDS / DISPLAY J5 HUMIDITY SENSOR 1 ph, V 50/60 Hz L1/L L2/N GND EL00184d.cvx Set switch 1 (SW1) to match the model of the indoor unit. 1 2 Set switch 2 (SW2) to match the outdoor port for the refrigerant connections. Set switches SW1 and SW2. SDHV SW1 Model 1 2 * 1218 Off Off 2430 On Off 3036 Off On 3642 On On * Factory default Refrigerant Connection SW2 1 2 Off Off On Off * Circuit 1 Circuit 2 Circuit 3 Off On Circuit 4 On On * Factory default To use iseries Thermostat 1 Set the remote communication address by installing 2 Do not install JP7 jumper 3 jumpers on the relay board thermostat inputs. R B G Y1 Y2 C ADDRESS JP1(R-Y1) JP2 (R-Y2) * 1 none none 2 YES none JP5 3 none YES JP1 4 YES YES * Factory default JP2 DO NOT remove JP5 unless using remote ON/OFF. C1 C FLOAT STD DRAIN OUTDOOR UNIT SWITCH T-STAT PUMP ALARM WHT JP6 JP7 Connect Remote IR receiver to J4 Remote IR Receiver indoorb board To use Standard (RGYO) Heat pump Thermostat 1 Connect 2 Add JP7 jumper 3 thermostat R B G Y1 Y2 C REMOVE ALL JUMPERS ON THERMOSTAT INPUTS. C1 C FLOAT STD DRAIN OUTDOOR UNIT SWITCH T-STAT PUMP ALARM Connect MMI (button) board to J4 LED1 LED2 LED3 MMI A01865-G01 PUSH BTN R B G Y1 Y2 C Thermostat WHT JP6 JP7 indoorb board Bulletin Copyright 2015 Unico, Inc. (SAC )

47 IndoorB board Legend F1: Fuse, 5x20mm, fast acting, 3.15A, 250V (Buss Type S500 F3.15AL250V or equal) F2: Fuse, 5x20mm, fast acting, 100mA, 250V (Buss Type S500 F100mAL250V or equal) Connectors J1: Alarm output, 230V J2: Drain pump (condensate) output, 230V J3: Power, 12V to motor adapter voltage lift board (VLB) J4: Communication cable to MMI (button) board or Remote IR receiver J5: Boiler Changeover jumper position J6: Not used J7: Not used J8: Power input, 230V (L) J9: Power input, 230V (N) J10: Not used J11: Communication cable to relay board (output) to enable auxiliary heat J12: Not used (output) J13: Not used (output) J14: Return air temperature (RAT) sensor mounted in coil section J15: Indoor coil temperature (ICT) sensor mounted on coil J16: Communication cable to motor connected to VLB motor adapter board J17: Communication cable to relay board (input) for thermostat O input J18: Communication mode, must be set to RS232 J19: Not used J20: Communication to outdoor unit (C1 and C2) J21: Input to enable system (turns on fan) J22: Input for float switch (condensate overflow) J23: Factory use only (programming) J24: Input to select the thermostat type (either iseries thermostat or standard heat pump thermostat) J25: (Future) damper output J26: Not used (output) J27: Not used (output) Jumpers JP1: input (either for remote channel or for low heat/cool) JP2: input (either for remote channel or for high heat/cool) JP3: factory use only (must have a jumper) JP4: factory use only (no jumper) Bulletin Copyright 2015 Unico, Inc. (SAC )

48 Thermostat Adapter (Relay) board P6 O G Y1 Y2 Thermostat Adapter (Relay Board) P7 A01837-G01 P7 S1 S2 S3 AUX LEGEND LED LIGHTS INPUTS (FROM THERMOSTAT) O: COOLING MODE G: FAN ONLY Y1: LOW STAGE HEAT/COOL Y2: HIGH STAGE HEAT/COOL S1: STAGE 1 AUXILIARY HEAT S2: STAGE 2 AUXILIARY HEAT S3: STAGE 3 AUXILIARY HEAT AUX: (FUTURE USE) PLUGS P6: THERMOSTAT OUTPUT TO INDOORB P7: AUXILIARY INPUT FROM INDOORB P4: POWER, 24VAC TERMINAL BLOCK: THERMOSTAT CONNECTIONS R: POWER (24V) B: REV. VALVE (ENERGIZE ON HEAT) Y1: STAGE 1 HEAT/COOL Y2: STAGE 2 HEAT/COOL C: POWER (COMMON) TB1 TB2 P4 PWR OUTPUTS (24V, 2A MAX) C: COMMON S1: STAGE 1 AUXILIARY HEAT S2: STAGE 2 AUXILIARY HEAT S3: STAGE 3 AUXILIARY HEAT AUX: (FUTURE USE) FUSE F1: 2A R B G Y1 Y2 C C S1 S2 S3 AUX 24VAC IL00541.cvx F1: Fuse, mini-blade, 2A, 32V (Unico part number A ) SDHV Blower RGBY Thermostat Input Logic Thermostat Signal R B G Y1 Y2 Mode System Response Fan runs on G speed (50% of Y2) Cooling Fan runs on Y1 speed (75% of Y2) Fan runs on Y2 speed (Full speed) Fan runs on G speed (50% of Y2) Heating Fan runs on Y1 speed (75% of Y2) Fan runs on Y2 speed (Full speed) = Required (24Vac), = optional MMI (Man-to-Machine Interface) Button Board Only used with standard thermostat LED1 LED2 LED3 MMI A01865-G01 PUSH BTN Legend LED1: RED LED2: BLU LED3: GRN BTN: Push button to display RPM limit status and to program the maximum motor speed for zone damper systems. Also allows the control box to receive signals from the remote control when using a standard thermostat. Bulletin Copyright 2015 Unico, Inc. (SAC )

49 Motor Adapter Voltage Lift Board (VLB) Converts the IndoorB communication signal from 12V to 24V for the proper motor control. Legend Connections: J1: Power, 12V J2: Communication to motor (12V) J3: Communication from indoorb (3.3V) VLB A Float Switch If installing the unit where an overflow of condensate will cause damage, install a float or wet switch to stop the operation of the unit. C1 OUTDOOR UNIT C FLOAT SWITCH STD T-STAT JP7 DRAIN PUMP ALARM FS Condensate Pump The system allows for a condensate pump if in cooling mode or if the float switch is open. The drain pump connection will power a pump with 230V, 1 phase, 60 Hz with a maximum of 3 amps. C1 OUTDOOR UNIT C FLOAT SWITCH STD T-STAT DRAIN PUMP ALARM JP6 JP7 Condensate pump 230V, 1ph, 60 Hz 3A max Bulletin Copyright 2015 Unico, Inc. (SAC )

50 Alarm The system allows the user to send an alarm signal if there is any error condition. The output is 230V, 1 phase, 60 Hz with a maximum of 3 amps. For example, the alarm can switch on a remote light. C1 OUTDOOR UNIT C FLOAT SWITCH STD T-STAT DRAIN PUMP ALARM JP6 JP7 Alarm (light or relay) 230V, 1ph, 60 Hz 3A max Remote On/Off (with iseries Thermostat ONLY) The system allows the installation of an external switch to shut down the system. For example, a hotel application might link the operation of the system to a key lock so that the unit turns off when the room is not occupied. Install the switch in place of JP5, shown below J1 OUTPUT (WHT) THERMOSTAT HEATER R B G Y1 Y2 C C S1S2 S3 F J2 INPUT (WHT) J3 +24V (WHT) 1 2 RELAY BOARD A01837-G01 JP5 REMOTE ON/OFF (SEE MANUAL) Bulletin Copyright 2015 Unico, Inc. (SAC )

51 DIMENSIONS IS18G050` (360) (285) (895) (830) (337) 0.59 (15) (538) All dimensions in inches (mm). IS24G (400) (340) (1030) (942) (400) (660) All dimensions in inches (mm). Bulletin Copyright 2015 Unico, Inc. (SAC )

55 TROUBLESHOOTING Check for Software Upgrades The iseries control system is essentially a computer with software. There may be updated software available for your system. The updates will include new features or fixes. Before replacing components, check with our customer service department to determine if your equipment requires a software upgrade. The version of the firmware will either be shown on the control board or will be indicated by the manufactured date code. To upgrade the firmware, use the iseries Communication Tool Kit, Unico part number A02131-K01. It requires a PC with Microsoft Windows operating system. Check refrigerant pressures. It is always possible to check the high side pressure using the access port on the emix connection. Use this service port for either cooling or heating. It is always the compressor discharge. The service ports on the other circuits are vapor lines to the indoor unit. In heating, it is the same as the compressor discharge. In cooling it is the suction pressure. LED lights Both the indoor and outdoor unit display error codes when the unit is experiencing a fault. The tables below show the LED codes that will appear on the indoor unit (either on the IR receiver, or on the MMI board) and the outdoor unit. Error Code Priority * (Normal Operation) Unit is stopped. MMI Board or IR Receiver LED Codes Meaning (Normal Operation) Unit is stopped, indoor units are ready to run. (Normal Operation) Unit is running. RED (D1 or LD2) LEDs BLUE (DL2 or LD3) GREEN (DL1 or LD1) 0 * Unit is being programmed, or firmware is faulty 1 Fault on outdoor unit (check outdoor unit LEDs to identify error code) 2 Float switch alarm 3 Communication error with outdoor unit 4 ICT sensor damaged or disconnected 5 RAT sensor damaged or disconnected 6 7 Communication error with the blower or blower damaged Blower blocked or outlets closed (high static pressure condition) 8 Invalid Outdoor-Indoor Unit Combination * Error #0 = Lowest priority. If more than one error is present, only the highest priority error is shown. = Solid, = Blinking, = Off Bulletin Copyright 2015 Unico, Inc. (SAC )

56 Error Code Priority * Outdoor Unit LED Codes Meaning LEDs DL1 DL2 DL3 DL4 DL5 - (Normal Operation) Outdoor Unit has power. - (Normal Operation) Outdoor Unit has power. Indoor units ready to run. 0 Unit is being programmed, or Firmware is faulty. 1 Communication fault with indoor unit(s). 2 Indoor Unit(s) fault. 3 PFC(Power factor controller) fault. 4 Outdoor fan temperature too high. 5 Outdoor fan overcurrent. 6 Compressor temperature too high. 7 Compressor current too high. 8 OCT(Outdoor Coil Temperature) probe sensor fault 9 OAT(Outdoor Air Temperature) probe sensor fault 10 CDT(Compressor Discharge Temperature) probe sensor fault 11 WTT A probe sensor fault 12 NTT A probe sensor fault 13 WTT B probe sensor fault 14 NTT B probe sensor fault 15 WTT C probe sensor fault 16 NTT C probe sensor fault 17 WTT D probe sensor fault 18 NTT D probe sensor fault 19 CTS(Compressor Top Shell) probe sensor fault 20 Invalid Indoor Unit Combination * Error #0 = Lowest priority. If more than one error is present, only the highest priority error is shown. WTT = Wide Tube Temperature = Suction line in cooling mode. NTT = Narrow Tube Temperature = Liquid line in cooling mode. Diagnostic Tool = Solid, = Blinking, = Off The iseries system is complex system utilizing specialized software, sensors, and microprocessor controllers. The most common problems are indicated by LEDs on the outdoor and indoor unit control board. If the error is not listed above, it will be necessary to link to the system and send our customer service representative a diagnostic log for review. The communications tool kit is part number, A02131-K01. It requires a PC with Windows operating system. Bulletin Copyright 2015 Unico, Inc. (SAC )

57 For proper installation and future reference, follow these instructions and mark each Check Box. Special Tools Required (Bulletin , pg. 3) Check that you have all of the following items: Bulletin Commissioning Report Form Bulletin Installation manual* Bulletin Diagnostics manual* Diagnostic tool kit* (laptop adapter, cable, CD) * included with outdoor unit Equipment (Bulletin , pg.1) Confirm indoor unit(s) match outdoor unit Turbometer is a trade mark of Davis Instruments. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Bulletin CL.005 Turbometer air velocity meter Torque Wrench (Yellow Jacket or equal) Laptop with Windows XP/7/8 Electrical High Voltage (Bulletin , pgs ) 208 or 230VAC; if 208VAC, AHU internal wiring is set to 208V. ENSURE AHU IS POWERED SEPARATELY FROM OUTDOOR UNIT High wall units powered from outdoor unit Electrical Low Voltage Communication Wiring (Bulletin , pgs ) Shielded cable, grounded on both ends. Must be 2-wire 18 AWG minimum C1 connected to C1, and C2 connected to C2 Electrical Low Voltage Control Wiring (Bulletin , pg. 38) Heat pump thermostat is wired per schematic Use the thermostat B terminal. Connect to AHU terminal B Switches (Bulletin ) Indoor blower switches set for correct port connection (pg. 25) Indoor blower switches are set for size of unit (pg. 31) Piping and Refrigerant (Bulletin ) Confirm line set size (pg. 4) Confirm line set length below maximum limit (pg. 5) Indoor unit(s) connected per schematic (pgs. 6-13) Torque wrench used to tighten flare nut (pgs ) Evacuate line set and indoor unit (pgs ) Open service valves (pg. 18) Add additional charge for long line set as required (pg. 5) Startup (follow sequence) 1. Connect laptop. Check software version. Update to latest version. (Bulletin ) 2. Start data logger. Let it run until LAST STEP. (Bulletin ) 3. Turn on power and check lights for any error codes (Bulletin , pgs ) 4. Record high speed airflow from each outlet with Turbometer. Use Bulletin Let unit run for at least 30 minutes to stabilize 6. LAST STEP: Save data file for future reference and disconnect laptop For assistance call Unico Technical Service at +1 (800) or go to for the latest Technical Bulletins

58 INSTALLATION INSTRUCTIONS - High-wall indoor unit - OPERATING LIMITS Cooling Maximum conditions Heating Maximum conditions Outdoor temperature : 122 F (50 C) D.B. Outdoor temperature : 75 F (24 C) D.B. Room temperature : 90 F (32 C) D.B. 65 F (18 C) W.B. 73 F (23 C) W.B. Room temperature : 91 F (27 C) D.B. Cooling Minimum conditions Outdoor temperature : 5 F (-15 C) D.B. Room temperature : 50 F (10 C) D.B. 17 F (6 C) W.B. Heating Minimum conditions Outdoor temperature : Room temperature : -25 F (-32 C) D.B. 41 F (5 C) D.B. Outdoor - Indoor unit combinations: See Outdoor unit installation manual. Power Supply: V, 1 ph, ~ 60 Hz A - B - C - D = indoor unit size Size Indoor Unit Model Number A IS12MPA B IS24MPB ACCESSORIES SUPPLIED WITH THE WALL MOUNT INDOOR UNIT Item Qty Description 1 1 Remote control 2 2 AAA batteries 2 1 Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

59 IMPORTANT! Please read before installation This air conditioning system meets strict safety and operating standards. For the installer or service person, it is important to install or service the system so that it operates safely and efficiently. For safe installation and trouble-free operation, you must: Carefully read this instruction booklet before beginning. Follow each installation or repair step exactly as shown. Observe all local, state and national electrical codes. Pay close attention to all warning and caution notices given in this manual. The unit must be supplied with a dedicated electrical line. WARNING This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death. CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage. If necessary, get help These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sale/service outlet or your certified dealer for additional instructions. In case of improper installation The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document. SPECIAL PRECAUTIONS During installation, connect before the refrigerant system and then the wiring one; proceed in the reverse order when removing the units. WARNING When wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked, to ensure the grounding. Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury and death. Ground the unit following local electrical codes. The Yellow/Green wire cannot be used for any connection different from the ground connection. Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard. Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. Do not use multi-core cable when wiring the power supply and control lines. Use separate cables for each type of line. When transporting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers. When installing In a ceiling or wall Make sure the ceiling/wall is strong enough to hold the unitweight. It may be necessary to build a strong wooden or metal frame to provide added support.... In a room Properly insulate any tubing run inside a room to prevent "sweating", which can cause dripping and water damage to walls and floors.... In moist or uneven locations Use a raised concrete base to provide a solid level foundation for the outdoor unit. This prevents damage and abnormal vibrations.... In area with strong winds Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.... In a snowy area (for heat pump-type systems) Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents. When connecting refrigerant tubing Keep all tubing runs as short as possible. Use the flare method for connecting tubing. Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them; screw by hand and then tighten the nut with a torque wrench for a leak-free connection. Check carefully for leaks before starting the test run. NOTE: Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion, the refrigerant tubing for your particular model is specified as narrow tube for liquid, wide tube for gas. When servicing Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring. Keep your fingers and clothing away from any moving parts. Clean up the site after the work, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced. Ventilate the room during the installation or testing the refrigeration system; make sure that, after the installation, no gas leaks are present, because this could produce toxic gas and dangerous if in contact with flames or heatsources. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

60 Installation site selection - Indoor unit AVOID Direct sunlight. Nearby heat sources that may affect unit performance. Areas where leakage of flammable gas may be expected. Locations where large amounts of oil mist may occur (such as in kitchen or near factory equipment) because oil contamination can cause operation problems and may deform plastic surfaces and parts of the unit. Unsteady locations that will cause noise or possible water leakage. Locations where the remote control unit will be splashed with water or affected by dampness or humidity. To make holes in areas where electrical wiring or conduits are located. DO Select an appropriate position from which every corner of the room can be uniformly cooled. Select a sufficiently strong location to support the weight of the unit. Select a location where tubing and drain hose have the shortest run to the outside. Allow access for operation and maintenance as well as unrestricted air flow around the unit. Installation site selection - Outdoor unit AVOID Heat sources, exhaust fans. Direct sunlight. Damp, humid or uneven locations. To make holes in areas where electrical wiring or conduits are located. DO Choose places as cool as possible and well ventilated. use lug bolts or equal to bolt down the unit, reducing vibration and noise. ADDITIONAL MATERIAL REQUIRED FOR INSTALLATION (NOT SUPPLIED) Deoxidized annealed copper tube for refrigerant tubing connecting the units of the system; it has to be insulated with foamed polyethylene, minimum thickness 5/16 inch (8 mm). INDOOR UNIT SIZE SMALL TUBE (LIQUID LINE) LARGE TUBE (VAPOR LINE) OUTER DIAMETER MIN. THICKNESS OUTER DIAMETER MIN. THICKNESS A 0.25" (6,35 mm) 0.031" (0,8 mm) 0.375" (9,52 mm) 0.031" (0,8 mm) B 0.25" (6,35 mm) 0.031" (0,8 mm) 0.500" (12,70 mm) 0.031" (0,8 mm) Refrigerant: R410A (if length exceeds standard pre-charge amount) Drain line (if needed): Plastic tubing (I.D. 3/4 inch [18 mm]). Lubrication oil for flare connections (about 1 oz. [30g]). Communication cable: 2-wire shielded cable, 18 ga. (minimum) Electric wire: use insulated copper wires per local codes. Tubing insulation Tools required for installation (not supplied) 1. Standard screwdriver 7. Hacksaw 12. Tube flaring tool 2. Phillips head screwdriver 8. Drill bits 5/16" (8 mm) dia. 13. Torque wrench (Yellow Jacket #60650 or equal) 3. Knife or wire stripper 9. Hammer 14. Adjustable Wrench 4. Tape measure 10. Drill 15. Reamer (for de-burring) 5. Level 11. Tube cutter 16. Hex. key 6. Sabre saw or hole saw TUBING DESIGN LIMITS See Outdoor unit installation manual Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

61 INDOOR UNIT A Minimum operation and maintenance area. 6.0 (150) E Tubing connections from the rear. Use the rear panel as a template. Check the horizontal position with the level. Mark the holes to be made. 2.0 (50) 10.0 (250) 6.0 (150) B A A B 43.7 (1110) 30.0 (760) 80.0 (2000) 6.0 (150) 67.0 (1700) A ll d im e n sio n s in in c h e s (m m ). B Remove and discard the set screw on the rear panel. F Drill a 2.5 inch (65 mm) diameter hole. Insert a 2 inch PVC pipe and secure in place. C Press the 2 marks on the frame cover and disengage the stationary tabs from the frame. G Prepare wall for attachment of rear panel. Use anchors (not included) as appropriate. ø 3/16" (5 mm) D The unit can be connected in five directions: rightrear, left-rear, left-side and right-downward. H Use the screws to fix the rear panel to the wall. Make sure the panel is flush against the wall and level. Any space between the wall and unit will cause noise and vibration. NO YES NO Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

62 I The indoor unit can be installed without removing the front panel. If necessary, remove the set screws placed under the two little covers. M The refrigerant tubes and drain hose are on the right side of the unit. The drain tray is supplied with two outlets with tube on the right side and rubber plug on the left side. J Disengage the front panel through a screwdriver pressing the three shown marks. Remove the front panel by sliding it up. N How to reverse the drain hose position. Remove the drain hose by turning it counterclockwise, then remove the rubber plug on the other side of the unit. Replace them inverting their position, use a screwdriver to place the plug correctly. TO SLIP ON 60 K To install the front panel again, insert it in the lower side of the unit and align it with the blocking points. Then push lightly on the shown marks (arrows). TO REMOVE O Running power wires plus ground wire from indoor to outdoor unit (use table to determine wire size). L Tubing connections on right or left side. Cut a corner of the frame. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

63 P Open the front panel of the unit. Remove the cover plate screw to reach the terminal strip. Insert the wires from the back, secure them with a conduit connector mounted in the knockout, and connect them to the power terminals. R LEFT REAR TUBING Insert the tubes connecting the units from the outside, then bend them right and remove the interior removable part of the frame. Hang the unit and extend the support on the back of indoor unit to make the connection easier. There are two conduit connection holes on the rear of the unit. Use the ¾ inch (22 mm) hole for the power lines and use the ½ inch (12.7 mm) hole for the communication cable. Q RIGHT REAR TUBING Insert refrigerant tubes and drain hose of the unit into the hole in the wall then hang the unit on the panel previously mounted on the wall. Make a flare on the end of the line set and connect the line set (refer to the outdoor unit installation manual for instructions for making flare connections). S Push lightly to fix the unit to the rear panel. Connect the line set to the refrigerant tubing on the outside of the wall (refer to outdoor unit installation manual for instructions for making flare connections). Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

64 T Prepare the terminals of the wire to connect to the terminal strip, connect them and secure the wiring with clamp provided. (See wiring diagrams). V Remove the front panel. WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. W Fill the tube and verify that the condensate can flow correctly. Reassemble the grille according to L. U Install the condensate drain to the outside with a positive slope. The condensate can then be carried away in a channel or collected into a reservoir so that it will evaporate. A trap may be installed in the condensate line to prevent air movement in the line. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

65 WIRING DIAGRAM B TO OUTDOOR UNIT POWER SUPPLY AC V 1 PHASE 60 Hz A Cable B must be shielded cable, 18 AWG (minimum) WIRE LENGTH, SIZE Outdoor units MODEL Power Supply Full Load Current Minimum Circuit Ampacity (MCA) Maximum Overcurrent Protection (MOP) IS18G IS24G65 1 phase, 60 Hz IS30G V IS36G Indoor units MODEL Power Supply Full Load Current Minimum Circuit Ampacity (MCA) Maximum Overcurrent Protection (MOP) IS12MPA 1 phase, 60 Hz 0.5 * * IS24MPB V 0.5 * * * Not fused separately. Connect directly to outdoor unit. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

66 REMOTE CONTROL INSTALLATION To ensure that the air conditioner operates correctly, DO NOT install the remote control unit in the following places: In direct sunlight. Behind a curtain or other places where it is covered. More than 25 ft (8 m) away from the air conditioner. In the path of the air conditioner s airstream. Where it may become extremely hot or cold. Where it may be subject to electrical or magnetic noise. Where there is an obstacle between the remote control unit and the air conditioner Wall Mounted Position Momentarily place the remote control unit in the desired mounting position. Verify that the remote control unit can operate from this position. Fix the support at the wall with two screws and hang the remote control unit. DEFAULT SETTING RESET To reset the indoor unit to default (factory) setting, set the remote control as follows: Filter: ON Night Mode / High Power Mode: OFF Operation mode: AUTO Flap: AUTO Set-point: 50 F (10 C) After setting the remote, press the FAN and IFEEL keys for more than 5 seconds, then release them while pointing the remote control towards the indoor unit. If the setting is correct you will hear the indoor unit beep 4 times. To enable the reset values, cycle the power by switching the unit OFF and ON the air conditioner to enable. This completes the process and the unit will continue to function with the default factory settings. PUMP DOWN (See outdoor unit installation instruction) Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

67 REMOTE CONTROL UNIT/INDOOR UNIT CHANNEL The remote communicates to the indoor unit with one of four different channels. Both need to be set to the same channel to talk. The default is channel 1. If you have two indoor units in the same room and want to control them separately with their own controller, they must each use a different channel. Set the remote controller as shown in the table. WARNING Disconnect the power 1. Disconnect the power of indoor unit. 2. Remove the batteries from the remote control unit. 3. Set the micro switches (see table). The switches are located in the battery compartment. 4. Insert the batteries in the remote control unit. 5. Set the channel in the indoor unit to match the same channel (see table). REMOTE CONTROLLER WALL MOUNT UNIT OFF CHANNEL 1 FACTORY DEFAULT 1=OFF 2=OFF 3= OFF 4=OFF 5=ON 6=ON SW1 SW3 SW1: 3=OFF 4=OFF OFF CHANNEL 2 SW1 SW1: 3=ON 4=OFF 1=ON 2=OFF SW3 OFF CHANNEL 3 SW1 SW1: 3=OFF 4=ON 1=OFF 2=ON SW3 OFF CHANNEL 4 SW1 SW1: 3=ON 4=ON 1=ON 2=ON SW3 Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

68 OUTDOOR UNIT REFRIGERANT CIRCUIT NUMBER (Method A Using DIP switches) Set the circuit number of the indoor unit to match the circuit number the refrigerant lines are connected to. Set the communication channel using the micro switches on the circuit board inside the control box. Disconnect the power of indoor unit. Set the micro switches (see table below). Switch on the indoor unit. At this point the system will operate with the new address. OUTDOOR UNIT CIRCUIT (PORT) WALL MOUNT UNIT CONTROL BOARD OFF FACTORY DEFAULT SW1 SW1: 1=OFF 2=OFF SW3 OFF SW1 SW1: 1=ON 2=OFF SW3 OFF SW1 SW1: 1=OFF 2=ON SW3 OFF SW1 SW1: 1=ON 2=ON SW3 Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

69 CIRCUIT NUMBER (Method B Using the iseries Remote) The circuit number can also be set by using the iseries remote. To set the circuit, follow these steps: 1. Power the indoor unit ON (or outdoor unit if power is from the outdoor unit). 2. Set the remote controller according to the table below. 3. Press the FAN and IFEEL keys of the remote controller at the same time and hold for more than 5 seconds, then release them while pointing the remote control towards the indoor unit to be set. If the setting is correct, you will hear 4 BEEPS as confirmation and the indoor unit starts operating with the new address. button operating mode (COOL - HEAT) set point flap filter night mode / high mode settings to select the Circuit number Circuit 1 Circuit 2 Circuit 3 Circuit 4 AUTO AUTO AUTO AUTO 52 F (11 C) 54 F (12 C) 55 F (13 C) 57 F (14 C) AUTO AUTO AUTO AUTO ON ON ON ON OFF OFF OFF OFF VERIFY COMMUNICATIONS After the wiring and piping is complete, verify that the system is fully communicating to each device. 1. Power ON the system. 2. Set the remote controller of unit 1 as follows (units 2, 3, and 4 must be OFF): Mode: cooling Filter: ON Set point: 90 F (32 C) 3. Press FAN + IFEEL button for at least 5 seconds, pointing the remote control unit directly at the air conditioner receiver. System starts and runs for 3 minutes. During this operation TIMER LED is flashing, while OPERATION LED is ON. After 3 minutes operation: If the setting is right, the unit switches to COOL mode and stops (set point: 90 F [32 C]). The system is ready to operate. If the setting is wrong, the STANDBY lamp flashes; check the setting of indoor units and the connections of the refrigerant circuits. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

TEMPERATURE DISPLAY (UNIT OF MEASURE) It is possible to change the temperature units from Celsius ( C) to Fahrenheit ( F) or back again. 1. Press the GREEN button to turn ON the remote. 2.

70 TEMPERATURE DISPLAY (UNIT OF MEASURE) It is possible to change the temperature units from Celsius ( C) to Fahrenheit ( F) or back again. 1. Press the GREEN button to turn ON the remote. 2. Next, press and hold the Filter/Shift button for 6 seconds to enter the Special Functions mode. You will see the word Filter appear on the remote control display. 3. Press the + button until the number displayed reaches 77. The - button can also be used to reach 77, but this will not change the display from Celsius to Fahrenheit, or viceversa. 4. To finish the switch, press and hold the Filter/Shift button for 6 seconds. This will cause the remote to exit the Special Functions mode. The display should now have switched between Celsius and Fahrenheit. 5. Repeating this process will cycle between Fahrenheit and Celsius display modes. F is not shown when displaying the temperature using Fahrenheit units. C will show only when temperature is in Celsius units. REMOTE CONTROL FUNCTIONS Refer to the Operation manual for the remote control features and functions. Bulletin Copyright 2014 Unico, Inc. (SAC xx.xxxx.xxx.xx)

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85 Introduction... 5 Section 1: Updating Firmware... 5 Equipment Required... 5 System Setup... 7 Update Procedure... 7 Section 2: iseries Diagnostics Equipment Required System Setup Logging Procedure Firmware Cross-Reference Table... 20

87 This manual provides instructions on how to use a USB-to-Serial adapter to update the firmware, as well as monitor and record the operation of iseries units. Both the indoor and outdoor units have firmware, and both can be upgraded by the same easy methods. Depending on the nature of the update, either the indoor or outdoor unit, or both units, may need to be upgraded. These upgrades provide new features, fix bugs, and aid in troubleshooting. We recommended that both indoor and outdoor firmware be updated at the time of installation on every iseries system. Logging system operation at startup is required. If you need assistance with any of the procedures described in this manual, please call Unico at The procedure below describes how to update the firmware on an indoor or outdoor unit. It is recommended that the installer check the tech.unicosystem.com website for the latest firmware available at the time of installation. This ensures that the unit has the latest features, as well as any recent bug fixes when it is installed. To determine whether an update is required, check the firmware currently installed and compare it with the firmware available on the website. A cross reference table is shown at the end of this guide. To install new firmware, gather the required equipment, and follow the update procedure below. Estimated Time Required: 15 minutes 0.) Laptop with Windows XP, Vista, 7, 8. 1.) iseries Serial Programming & Diagnostics Kit Unico p/n: A02131-K01 This kit contains items 1.1, 1.2, ) USB-to-Serial Adapter Unico p/n: A Note: If you choose to source your own adapter, it must be a USB to RS-485 adapter. E.g. Gearmo p/n: GM USB to RS-485/422 Converter Figure 1. USB-to-Serial adapter connection diagram.

88 1.2.) Cable, 15t Unico p/n: A Note: If you choose to source your own cable, use 2-conductor cable with shield and drain wire, 18-22ga. Figure 2. Communication Cable with x faston connectors. 1.3.) iseries Serial Programming & Diagnostics CD This CD contains the following required files: 1.3.1) iseries Firmware Updater SETUP.exe This software is only required if this is the first time the firmware updater software is used on a particular computer. The setup program installs certain files that are required for the updater to operate ) Series Firmware Updater v.09.exe This is the program that will deliver the update to the indoor or outdoor unit ) Firmware files for all indoor and outdoor units. These files can be used to upgrade units with older firmware, or restore the default firmware to newer units. See Table 1 to identify the firmware used with each indoor and outdoor unit. Please check the tech.unicosystem.com website for firmware updates released after this Bulletin was printed. Look for this icon: Look for this icon: Indoor or Outdoor Unit iseries Control Box IS12MPA IS24MPB IS18G050 IS24G065 IS30G080 IS36G110 Matching Firmware IBv1.15.txt IS12MPAv1.01.txt IS24MPBv1.01.txt N/A IS24G065v1.05.txt IS30G080v1.03.txt IS36G110v1.03.txt

89 Before attempting to upgrade the firmware, ensure that the system is configured as follows: 1.) The outdoor unit and indoor units are powered off. All LEDs in the outdoor unit are off. 2.) All communication wires between the outdoor unit and any indoor units have been disconnected. (Both C1 and C2 terminals.) 3.) The USB-to-Serial adapter is connected to the outdoor unit communication terminals as shown below. 4.) The USB-to-Serial adapter is disconnected from the laptop. 5.) The updater program (iseries Firmware Updater_v07.exe) is closed. To update the firmware, take the following steps:

90 1.) Wire the USB Adapter To wire the adapter Use 2-conductor cable with shield and drain wire, 18-22ga, for these connections (same as the wiring between the ODU and IDU control box). Connect terminal 1 on the adapter to communication terminal C2. Connect terminal 2 on the adapter to communication terminal C1 The connections to C1 and C2 can be made either at the indoor or outdoor unit. Connect the drain wire to the ground terminal on either the indoor or outdoor unit. Note: Do not connect the drain wire to both the USB adapter ground terminal and the IDU/ODU ground terminal. This will create a ground loop and cause the programming step to fail. 2.) Insert the USB adapter into the laptop. 3.) Determine which COM port the serial adapter is using. Figure 1a. USB-to-Serial adapter connection diagram. Figure 1b. USB-to-Serial adapter with shielded cable attached. 3.1) Go to Start>Control Panel>Device Manager

Note: The COM port in use on your computer may differ from the example shown at right. 4.

91 3.2) Select Ports (COM & LPT) 3.3) Look for USB Serial Port. The COM port in use will be listed. Record this port number for later use. Note: The COM port in use on your computer may differ from the example shown at right. 4.) Launch the iseries Firmware Updater_v09 program. The first time you launch the program, you will see the window at right. You must set the COM port before the first use of the program. Click OK. 5.) Set the COM port that the program will use by going to File>Config.

92 6.) Type the COM port your serial adapter is using in the field provided. This should be the same number you recorded in Step ) Exit the configuration window by selecting File>Exit Note: If you use the X button in the top right corner of the window, your changes will not be saved, and the program may not communicate properly. 8.) Select the devices to be programmed. To upgrade the firmware on the outdoor unit, check the box next to Outdoor and make sure that all other boxes are unchecked. Disconnect any communication wires going to the indoor unit. To upgrade the firmware on the indoor unit select the checkbox that corresponds to the refrigerant circuit to which the indoor unit is attached. Uncheck all other boxes. Disconnect any communication wires between the indoor and outdoor unit.

93 9.) Select the firmware file to use. Click Firmware File, next to the checkbox for the unit that is to be updated. Then browse for the firmware file that corresponds to the unit being programmed. Outdoor Unit iseries Control Box IS12MPA IS24MPB IS18G050 IS24G065 IS30G080 IS36G110 IBv1.15.txt Firmware IS12MPAv1.01.txt IS24MPBv1.01.txt N/A IS24G065_v1.05.txt IS30G080_v1.03.txt IS36G110_v1.03.txt 10.) Click Synchronize, then wait for the green progress bar to roll across the screen one time(about 10 seconds). Waiting longer will not prevent the unit from synchronizing, but provides no benefit.

11.) Turn on power to the unit being programmed. If programming an outdoor unit, observe the LEDs on the main circuit board.

) If the outdoor unit begins its normal startup sequence with only one or two LEDs lit, or if the EEVs start their homing procedure, you must restart

ODU LEDs Location ODU LEDs Detail If programming an indoor unit, observe the LEDs on the MMI board or front of the MP unit.

94 11.) Turn on power to the unit being programmed. If programming an outdoor unit, observe the LEDs on the main circuit board. If the computer and unit are synchronized, all 5 green LEDs on the main circuit board will be solidly lit.(see top two images at right.) If the outdoor unit begins its normal startup sequence with only one or two LEDs lit, or if the EEVs start their homing procedure, you must restart the programming process from the beginning. This failure to synchronize is likely due to bad communication, or not following the steps above. ODU LEDs Location ODU LEDs Detail If programming an indoor unit, observe the LEDs on the MMI board or front of the MP unit. If the computer and the unit are synchronized, the Blue and Green LEDs will be solidly lit on SDHV units, and all three LEDs will be lit on MP units. (See bottom image at right.) MMI Board LEDs Detail. Note Green and Blue LEDs

12.) Click Start Update When the computer and outdoor unit are synchronized, click Start Update. The update will start by erasing the old firmware file, and will then program the new firmware file.

95 12.) Click Start Update When the computer and outdoor unit are synchronized, click Start Update. The update will start by erasing the old firmware file, and will then program the new firmware file. After programming, it will verify that the new file was installed correctly. This programming process takes about 2 minutes. 12.1) Once the adapter is plugged in, you will see a single red LED, indicating the adapter has power. Power Only 12.2) While the software is trying to synchronize with the unit, you will see the red power LED, and a single yellow LED Synchronizing 12.3) While the software is programming the unit, you will see the red power LED, and two yellow LEDs. Programming

96 13.) Successful Programming After successfully programming the indoor or outdoor unit, the program will report PASSED as shown at right. 14.) Power down and disconnect adapter Power down the unit, and disconnect the serial adapter wires from the unit. The unit will run with the updated firmware the next time it is powered up. 15.) Re-connect communication wires that were disconnected from either the indoor or outdoor units during the programming process. Reconnect them before restarting the unit.

97 The operation of every iseries unit can be monitored and recorded using the same USB-Serial adapter that is used to update the firmware. The logger s graphical user interface(gui) provides information on both the indoor and outdoor units(when powered), including temperatures, blower RPM and Mode of operation. While the outdoor operation can be monitored without power to the indoor unit, the indoor unit cannot be monitored without power to the outdoor unit. The log file that is created when the logger is running contains much more data than is displayed through the GUI, and this data can help to diagnose some field issues. It is good practice to hook up the logger to every installation at startup in order to confirm that the system is operating normally. Gather the required equipment below, and follow the logging procedure to generate a log. 1.) Laptop with Windows XP, Vista, 7, 8 2.) USB-to-Serial Adapter Unico p/n: A Note: If you choose to source your own adapter, it must be a USB to RS-485 adapter. E.g. Gearmo p/n: GM USB to RS-485/422 Converter To wire the adapter Use 2-conductor cable with shield and drain wire, 18-22ga, for these connections (same as the wiring between the ODU and IDU control box). Connect terminal 1 on the adapter to communication terminal C2. Connect terminal 2 on the adapter to communication terminal C1 The connections to C1 and C2 can be made either at the indoor or outdoor unit. Connect the drain wire to the ground terminal on either the indoor or outdoor unit. Note: Do not connect the drain wire to the USB adapter ground terminal. This will create a ground loop and cause the programming step to fail! Figure 1a. USB-to-Serial adapter connection diagram. Figure 1b. USB-to-Serial adapter with shielded cable attached. 3.) Cable, 6ft Unico p/n: A Note: If you choose to source your own cable, use 2-conductor cable with shield and drain wire, 18-22ga. Figure 3. Communication Cable with x faston connectors.

98 4.) iseries Serial Programming & Diagnostics CD This CD contains the following required files: 4.1) Service Loggers These loggers allow the user to monitor and record data from an operating system. Service Loggers are only required to log the operation of the system. They are not required to conduct a firmware update. 1.) Unico DCI Logger v2.6 (Service MP G50).exe 2.) Unico DCI Logger v2.6 (Service MP G65).exe 3.) Unico DCI Logger v2.6 (Service MP G80, G110).exe 4.) Unico DCI Logger v2.6 (Service SDHV G50).exe 5.) Unico DCI Logger v2.6 (Service SDHV G65).exe 6.) Unico DCI Logger v2.6 (Service SDHV G80, G110).exe Before attempting to log system operation, ensure that the system is configured as follows: 1.) The outdoor unit is powered on and the indoor units are powered on or off. 2.) All communication wires between the outdoor unit and all indoor units have been connected. 3.) The USB-to-Serial adapter is connected to either the indoor or outdoor unit communication terminals. 4.) The USB-to-Serial adapter is plugged in to the laptop.

Connect terminal 1 on the adapter to communication terminal C2.

99 Take the following steps to log data: 1.) Wire the USB Adapter To wire the adapter Use 2-conductor cable with shield and drain wire, 18-22ga, for these connections (same as the wiring between the ODU and IDU control box). Connect terminal 1 on the adapter to communication terminal C2. Connect terminal 2 on the adapter to communication terminal C1 The connections to C1 and C2 can be made either at the indoor or outdoor unit. Connect the drain wire to the ground terminal on either the indoor or outdoor unit. Note: Do not connect the drain wire to the USB adapter ground terminal. This will create a ground loop and cause the programming step to fail! Figure 1a. USB-to-Serial adapter connection diagram. Figure 1b. USB-to-Serial adapter with shielded cable attached. 2.) Determine which COM port the serial adapter is using. 2.1) Go to Start>Control Panel>Device Manager 2.2) Select Ports (COM & LPT)

100 2.3) Look for USB Serial Port. The COM port in use will be listed. Record this port number for later use. Note: The COM port in use on your computer may differ from the example shown at right. 3.) Select the appropriate logger In order to properly log the data, you must select the logger that matches your system configuration. Select the logger to use based on your outdoor unit type and the type of indoor units in use. 1.) Unico DCI Logger v2.6 (Service MP G50).exe 2.) Unico DCI Logger v2.6 (Service MP G65).exe Each logger filename lists the type of outdoor unit it can be used with. Either G50, G65, G80 or G110 will be part of the filename. The filename also lists the type of indoor unit it should be used with, either SDHV or MP. If the system has both SDHV and MP(either MPA or MPB) units installed on the same outdoor unit, use the SDHV logger. For example, a system using an IS24G065 outdoor unit with and IS24MPB indoor unit would use logger #2 from the list at right. 3.) Unico DCI Logger v2.6 (Service MP G80, G110).exe 4.) Unico DCI Logger v2.6 (Service SDHV G50).exe 5.) Unico DCI Logger v2.6 (Service SDHV G65).exe 6.) Unico DCI Logger v2.6 (Service SDHV G80, G110).exe 4.) Launch the logger. Double click the icon for the logger that matches your system configuration. You will then see the screen at right. 5.) Set the COM port that the system will use by selecting from the drop-down menu under Com port name

101 6.) Assign the filename. You must give your log file a name and decide where to save it. Use the example at right as a template for the filename. It includes the date, job name and address, and will help to identify the log later. Save the file to the Desktop so it is easy to find later. 2015_02-12 Berry Residence Unico Ln. 7.) Click Start to begin logging system operation. You will see the screen change and start to display operating parameters of the system. Record data for at least 15 minutes. 8.) Click Stop when you are done logging. The program will automatically create a.zip file with the data that was recorded. 9.) Send the log file to Unico. If you are logging system operation in order to get help troubleshooting a unit, send the log file to Unico Customer Service at: service@unicosystem.com 10.) Resume normal operation. Logging system operation does not interfere with normal system operation. Simply disconnect the serial adapter communication wires from the indoor or outdoor unit when the log is complete.

To determine whether a firmware update is required, first determine which versions of the firmware are installed on the outdoor and each indoor unit.

102 To determine whether a firmware update is required, first determine which versions of the firmware are installed on the outdoor and each indoor unit. On the logger interface, you will see the Logger Code. Use the table below to identify the corresponding firmware version. Compare these numbers with the current versions available on the website. If the firmware is current, no update is required. If it is out of date, please update the firmware. To find the Outdoor Unit Firmware Version, look here: To find the indoor unit Firmware Version, Look here:

103 Indoor or Outdoor Unit Firmware Version Logger Code *IBv IBv IBv IBv iseries Control Box IBv IBv IBv IBv b IBv IBv IS12MPA *IS12MPAv IS12MPAv IS24MPB *IS24MPBv IS24MPBv IS18G050 *N/A N/A IS24G065v IS24G065v IS24G065v IS24G065 IS24G065v IS24G065v IS24G065v1.00 N/A IS30G080 IS36G110 IS30G080v IS30G080v IS30G080v IS30G080v IS36G110v IS36G110v IS36G110v IS36G110v * Indicates the Most Current Release Version. Control Boxes with firmware below revision 1.12 must be exchanged to upgrade the firmware. Those with version 1.12 and higher are field upgradeable.

104 Project Information Installer information Customer last name Company name Project address Installer name City, State, Zip code Address City, State, Zip code Phone Outdoor Equipment Model (check one) Serial Number Purchase date Install Date IS18G050 IS24G065 IS30G080 IS36G110 Measured voltage Measured amperage Extra R410A Refrigerant charge (if long line set) lbs. oz. LED status (check one) LED1 LED2 LED3 LED4 LED5 Logger Version Solid Blinking Off Example: 000 Retain the completed form for future reference and technical assistance. To register your products and to receive future notices of product improvements, submit this form to Unico Customer Service at: or FAX to (314) Bulletin

105 Indoor Equipment ODU Circuit (connection) number Circuit 1 Circuit 2 Circuit 3 Circuit 4 Indoor Unit Model (select one) IS12MPA IS24MPB U1218L-1EA2 High wall indoor units SDHV air handlers M2430BL1-EA2 + M2430CL1-A M3036BL1-EA2 + M3036CL1-A IDU serial number Line set size 1/4" x 3/8" 1/4" x 1/2" 3/8" x 5/8" Line set length ft ft ft ft IDU Elevation (select one) Height above ODU ft ft ft ft Height below ODU ft ft ft ft Thermostat Type (select one) Single-stage HP Multi-stage HP iseries IR remote HP thermostat O/b set to B Optional Equipment Hot water coil Electric Furnace Model (check one) SDHV Model Selection (check pin position) SDHV SW1 PIN 1 2 ON PIN 1 2 ON PIN 1 2 ON PIN 1 2 ON OFF OFF OFF OFF Circuit Selection (check pin position) SDHV SW2 OFF High wall SW1 PIN 1 2 ON PIN 1 2 ON PIN 1 2 ON PIN 1 2 ON SW1 SW3 OFF OFF OFF OFF Boiler changeover temperature (check one) n/a Default (32 F) Custom F F F F LED status (check one) Red Blue Green Firmware Version Solid Blinking Off Example: 000 Bulletin

106 Ductwork information (requires Turbometer) Duct Run Room Outlet Type SDHV 1 SDHV 2 Duct Length (ft) Outlet Velocity (knots) Airflow (CFM) Room Outlet Type Round Slotted Round Slotted EX. Liv Rm Duct Length (ft) Outlet Velocity (knots) Airflow (CFM) Total Airflow Total Airflow Use following equations to calculate outlet airflow Round 2" CFM = knots x 2.00 L/s = knots x 0.94 Round 2.5" CFM = knots x 2.37 L/s = knots x 1.11 Slotted straight (0 ) CFM = knots x 6.00 L/s = knots x 2.82 Slotted elbow (90 ) CFM = knots x L/s = knots x Bulletin

107 (Optional) Sketch of piping and duct system. Bulletin

108 NOTES

109 NOTES

110 NOTES

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Unico, Inc. 1120 Intagliata Drive Arnold, MO 63010 +1 800 527 0896 +1 314 481 9000 www.unicosystem.com Unico, Inc. manufacturing plant and sub-assembly plant Unico, Inc.

112 Unico, Inc Intagliata Drive Arnold, MO Unico, Inc. manufacturing plant and sub-assembly plant Unico, Inc. is the leader in Small Duct heating and cooling systems and other high-end HVAC systems. The company manufactures all of its products in St. Louis MO, with over 200,000 square feet of modern manufacturing plants. The company is well known for extensive use in older, architecturally unique homes and buildings as well as elite, high end custom homes. The company is family owned and operated and sells in all 50 United States, all provinces of Canada, and in over 28 countries around the world.

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS - Wall-mount indoor unit - OPERATING LIMITS Cooling Maximum conditions Heating Maximum conditions Outdoor temperature : 122 F (50 C) D.B. Outdoor temperature : 75 F (24 C) D.B.