R Series Cooling Manual

Transcription

1 Mini Duct Heating and Air Conditioning Indoor Air Quality Systems R Series Cooling Manual Includes: RPM-E-50 Cooling Module RPM-E-0 Cooling Module RPM-E-00 Cooling Module Manufactured By Energy Saving Products Ltd. ESP 05.05

2 RPM-E Coils Pre-Piped Refrigerant Cooling Module Specifications RPM-E-50 RPM-E-0 RPM-E-00 Part Number Refrigerant Type R-22 R-22 R-22 TX Cooling MBH Fin Material Aluminum Aluminum Aluminum Tubing Material Copper Copper Copper Type of Fins.006 Al.006 Al.006 Al Connection Sizes Liquid Line (Lq) /8 /8 /8 Suction Line (S) /8 /8 /8 Drain Connection /8 /8 /8 TEV with Built in Check Valve & Bypass Yes Yes Yes Site Glass Yes Yes Yes Access Ports Yes Yes Yes Freeze Stat Yes Yes Yes Shipping Weight (lbs) Module Size Length (L) 9 /4 24 /4 2 Width (W) 4 5/8 4 5/8 4 5/8 Height (H) 8 /2 8 /2 8 /2 Matching Fan Coil HE - 50 / 5 / 52 HE - 0 / HE - 00 / 0 Tons ) Smaller condensers may be matched to the fan coil when needed (match TXV to condenser size) 2) Minimum of 8 full outlets per ton of cooling needed MBH = Thousand British Thermal Units per Hour TX = Thermal Expansion TEV = Thermal Expansion Valve Multiple Access Coils: Can be used with a fan coil installed in any position. With our pre-fabricated knock outs, select the desired position and within minutes it is ready for installation. Comes Pre-Piped: The TXV (Thermal Expansion Valve), site glass, access ports and external freeze stat are already installed. The liquid and suction lines have male solder connections at a standard width making connections to the condenser lines quick and easy. Refrigerant modules come with: Heat pump ready Thermal Expansion Valve, with built in check valve Integrated Site glass Integrated access ports Integrated external freeze Two L mounting brackets B H A B Lq S A W Rough Opening Sizes A or B A or B RPM-E 50 /4 L X /4 W /4 L X 9 W RPM-E-0 6 /4 L X /4 W 6 /4 L X 9 W RPM-E /4 L X /4 W 22 /4 L X 9 W Note: Do not use a combination of A/A or B/B L

3 Refrigerant Modules (RPM-E) Fig Mounting Brackets The RPM-E Series cooling module is pre-piped with an adjustable heat pump thermal expansion valve and comes with bleed port, site glass, suction and liquid line service ports, a factory mounted freezed stat, and two L brackets for mounting. The RPM-E comes as a module and must be installed on the return air side of the fancoil The module offers multi-position air flow options for horizontal, highboy, or counterflow configurations (Fig. 0). Fig. 0 - RPM-E Cooling Module A B B Secondary Drain Pan Some building codes call for a secondary drain pan under the entire unit (Fig. 0). Any installation that has the potential of property damage due to condensate must have a secondary drain pan installed. If the unit is installed in a high heat and/or high humidity location, extra insulation around the unit casing may be required. This will prevent excessive condensate from forming on the outer surface of the casing. Fig. 0- Secondary drain pan A When installing, any combination of A and B can be used. For example, for horizontal application you would use A/B, for counterflow you would use B/A or B/A, or for highboy you would use A/B or A/B. Do not use a combination of A/A or B/B. See Pg. for details - Rough Opening Sizes The RPM-E is available with the option of a R-40 heat pump thermal expansion valve and must be factory ordered as such. For other configurations, contact the factory. Mounting the RPM-E Mounting Brackets Two L mounting brackets are shipped loose for attaching the RPM-E to the fancoil, along with two sided foam tape for air seal between units. When mounting the cooling coil to the fan coil (Fig. 02), ensure that no screws puncture the drain pan or coil. See Appendix Pages for the dimensions of the fan coil units and cooling modules. Secondary drain pan P-Trap P - Trap The condensate drain must have a Vented P-trap installed (Fig. 0), and run at a slope of ¼ per foot in the direction of the drain. All RPM-E modules come with a ¾ primary outlet and a ¾ secondary outlet. When installing the P-trap it must be installed on the primary outlet. A vent must be installed between the coil and the P-trap, keeping the vent as close to the coil as possible. R Series Cooling Manual Pg.

4 The RPM-E comes pre-piped with the coil assembly. With the RPM-E, the Liquid and Suction lines are the only brazing that need to be done at the fan coil. For charging and brazing, remove the front access panel of the RPM-E (Fig. 04). With the access panel removed, the coil assembly will be accessible. Wet rag the liquid and suction line (or use a heat dissipating paste) to ensure no overheating occurs to the pre-piped coil assembly. Fig Remove Front Access Panel Evacuating After the piping is installed and all components have been brazed together, a vacuum pump must be used to evacuate the system from both the low and high side to 500 microns. Add pressure to the system to bring the pressure above zero psig. After allowing the refrigerant to absorb moisture, repeat the above procedure. Evacuate the system to 500 microns on the second evacuation, and ensure that the system holds at the vacuum pressure. If not, check for leaks and evacuate again. If the vacuum holds, add refrigerant to raise the pressure to 2 psig. At this point open service valves on precharged condensing units, or add refrigerant to the system. The use of an electronic leak detector is recommended, as it is more sensitive to small leaks under the low pressures. Charging Once the system has been determined clean and ready for charging, refrigerant can be added to the system. The access ports on the condenser must be open at this point. Never leave the system unattended when charging. With the system running, slowly add refrigerant to the system until the site glass is clear of all bubbles. If the site glass is clear of bubbles and the super heat is off, the TX valve will need to be adjusted (See Super Heat for temperature settings). When adjusting the TX valve, never turn it more than a quarter turn at a time. Always allow 5 minutes for the system to settle down before making another TX adjustment. When adjusting the TX valve, a clockwise turn will close the valve, allowing less refrigerant through. With less refrigerant flowing through the coil, less cooling will be done, which will bring up the suction line temperature. Super Heat/Sub-cooling Super heat on Hi-Velocity systems with the RPM-E series should normally be around 6ºF -8ºF. With sub-cooling, double the superheat at 2ºF-6ºF The suction line should be set at approximately 42ºF. Piping the RPM-E Only refrigerant grade pipe and fittings are to be used with Hi-Velocity Systems. Plumbing fittings may contain wax or other contaminants which are detrimental to the proper operation of the system. Insulate the suction line with /8 insulation such as Armaflex. In high heat areas, /2 insulation may be needed. If the lines are run in an area where temperatures could exceed 20 F or runs longer than 50, then the liquid line may need to be insulated as well. Support the pipe every 5 feet, or whatever local code states. Run the pipes in the most direct route possible, taking into account structural integrity and building details. If the evaporator is located above the condenser, slope any horizontal runs toward the condenser. If the condenser is located above the evaporator, a P-trap must be installed at the bottom of the vertical riser. For long vertical risers, additional P-traps must be installed for every twenty feet. For lines running over 50, a suction line accumulator must be installed. Lines running over 00 are not recommended. Pipe Sizing Tables 0 and 02 contain line sizing information for the liquid and uction lines. Table 0 Liquid Line sizes Tons Distance Table 02 Suction Line sizes Tons Distance R Series Cooling Manual Pg. 2 5 The sizes given in the above tables are only for general reference, if the condenser manufacture requires a different size than specified in Table 0 and Table 04, their sizing shall be used whenever a discrepancy occurs. Outdoor Unit Installation Locate the outdoor unit in a suitable location, as close as possible to the fan coil. Maintain the clearances recommended by the manufacturers of the outdoor unit, to ensure proper airflow. The outdoor unit must be installed level, in a properly supported location. A liquid line filter/ drier is recommended to be installed. 2

5 Wiring Outdoor Unit Make all connections to the outdoor unit with rain tight conduit and fittings. Most building codes require a rain tight disconnect switch at the outdoor unit as well (always check local codes). Run the proper size copper wires to the unit, and connect as per the manufacturer s recommendations. Ensure that the unit is setup for a TX system. If not, a hard start kit may be required. Wiring Indoor Unit Refer to HE Installation Manual for interior unit wiring, e.g. thermostat connections, anti-ice control, etc. RPM-E Sizing & Specifications Page contains sizing and specifications for RPM-E Cooling Units. Return Air The return air duct is not supplied with the Hi-Velocity System. It is to be supplied and installed by the contractor. The return air and fresh air make-up ducts are to be installed according to local building code. The first five feet of the return air duct from the air handling units is to be acoustically lined for sound absorption. This only applies on short return air duct work of less than 0 feet. For traditional house return air using a combination of return air metal duct and joist liners, this does not apply. Duct Sizing The return air is to be sized on a 0.5 static pressure as compared to 0.0 static pressure for conventional forced air systems. The maximum length for an individual return air duct is fifty feet. Table 0 Return Air duct sizes Unit Round Duct Square Inches HE-50/5/52 H/BU 2 HE-0/ H/BU 2 HE-00/0 H/BU 4 54 Return Cutout All Hi-Velocity fan coils are shipped with the return air knockouts pre-measured for multiple configurations. Fig. 05 shows the different locations the return air can be installed on Hi-Velocity Systems. Table 04 contains the pre-measured dimensions for the return air knockouts. Fig. 06 shows pre-measured knockout locations (in bold). Fig Return Air Cutout Sizing Supply Side RA-A (Left/Right Side) RA-B Note: This drawing is NOT to scale. Table 04 Return Air Cutout Dimensions Model RA-A RA-B (Horizontal) Fig Return Air Cutout Locations Legend RA - Return air RA-B (Highboy/ Counterflow) HE-50/5 H/BU /4 X /4 /4 X /4 /4 X 9 HE-0/ H/BU 6 /4 X /4 6 /4 X /4 6 /4 X 9 HE-00/0 H/BU 22 /4 X /4 22 /4 X /4 22 /4 X 9 HV-50/5 H/BU 9 /4 X /4 9 /4 X /4 9 /4 X 9 HV-0/ H/BU 4 /4 X /4 4 /4 X /4 4 /4 X 9 HV-00/0 H/BU 20 /4 X /4 20 /4 X /4 20 /4 X 9 When sizing the return air ducts, keep in mind that if they are too small they can create noise, but if they are too large, the fan coil cannot build up proper pressure. Table 0 has recommended return air sizes for round and rectangular ducts. A variance of plus/minus 20% is allowable for sizing return ducts that connect to the Hi-Velocity Systems unit. It is recommended to install a grill that is 0-20% larger than specifications require, this will ensure that there is no air velocity noise at the grill. Where allowed by local codes, a single return air grill may be used. When using flexible duct for return air, use one duct size larger due to the higher friction loss. HE - Horizontal HV - Horizontal HE - Highboy/Counterflow HV - Highboy/Counterflow HE - Highboy/Counterflow (Left Side) HV - Highboy/Counterflow (Right Side) Once the placement of the return has been decided, the return air knockout(s) can be marked and cut (Fig. 06). The pre-measured guide cuts supplied with the fan coil should always be used; this will guarantee maximum airflow across the coil. R Series Cooling Manual Pg.

6 Cooling Start-Up Pipe system with Site Glass and Access Ports at the evaporator. Leak check and evacuate system. Check system operation with power to the outdoor unit off or use the service disconnect. Connect gauges and open outdoor unit service valves. Turn on power to the outdoor unit and start system. Start N Bubbles In Site Glass Remove Charge Until Bubbles Are Visible Y Add Charge Until Site Glass Is Clear Check Suction Line Temperature Temperature at or Over: (And/Or Hunting) 4 F +/- F Temperature at: 42 F +/- F Temperature at or Below: 4 F +/- F Open TX Valve ¼ turn and WAIT FIVE minutes Close TX Valve ¼ turn and WAIT FIVE minutes Confirm Site Glass Is Still Clear System Start-Up Complete Y Line Temperature is Stable Within a +/- 2 F swing N Perform System Trouble Shooting Check Return to Start Rectify Problem 4 R Series Cooling Manual Pg. 4

7 WARRANTY One year limited warranty. The heat exchanger and blower are free from defects in workmanship for one year from date of purchase. Three year limited warranty. The EPC Motor, EPC Controller and EPC Circuit Board are free from defects in workmanship for three years from date of purchase. Two year limited warranty. The electrical strip heater is free from defects in workmanship for two years from date of purchase This warranty applies only to the fan coil unit and does not include connections, attachments, and other products or materials furnished by the installer. This warranty applies only to the first purchaser at retail and excludes any damages caused by changes, relocation to, or installation in a new site. This warranty does not cover any defects caused by failure to follow the installation and operating instructions furnished with the fan coil, local building codes, and good industry standards. Failure to correctly install the fan coil, or material related to the unit, may result in improper system performance and/or damages and will void this warranty. TERMS AND CONDITIONS Any repair performed under warranty must be approved by Energy Saving Products Ltd. for this warranty to be valid. The manufacturer is not liable for any other damages, personal injury, or any other losses of any nature. The liability of the manufacturer is limited to and shall not exceed the cost of replacement parts and shall not include transportation to and from the factory, and field labour. Inoperative parts must be returned with serial number, purchase date, and a detailed description of the entire problem with an ESP RMA Form. This warranty replaces all other warranties expressed or implied. ENERGY SAVING PRODUCTS LTD STREET EDMONTON, ALBERTA, CANADA T5L 0N8 PHONE (80) FAX (80) TOLL FREE

8 Energy Saving Products Ltd., established in 98, manufactures the Hi-Velocity Systems TM product line for residential, commercial and multi-family markets. Our facilities house Administration, Sales, Design, Manufacturing, as well as Research & Development complete with an in-house test lab. Energy Saving Products prides itself on Customer Service and provides design services and contractor support. Comfort from floor to ceiling, Satisfaction from room to room, with TM It s not just a dream, it s reality. HARDI Phone: (80) Fax: (80) Toll Free: velocity.com ESP 05.05