INSTALLATION INSTRUCTIONS

Transcription

1 INSTALLATION INSTRUCTIONS ENERGY EFFICIENT FRESH AIR SYSTEM MODELS NRFLOH VSMARTH NRFLOE VSMARTE VB0113 RESIDENTIAL USE ONLY READ AND SAVE THESE INSTRUCTIONS INSTALLER: LEAVE THIS MANUAL WITH THE HOMEOWNER rev. D

2 ABOUT THIS MANUAL First, we want to congratulate you on your purchase of this excellent unit which will allow you and your family to enjoy clean and healthy air throughout your home for years to come! Please take note that this manual uses the following symbols to emphasize particular information: 0! WARNING Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death. CAUTION Denotes an instruction which, if not followed, may severely damage the unit and/or its components. NOTE: Indicates supplementary information needed to fully complete an instruction. ABOUT THESE UNITS 0! WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING: 1. This unit is intented for residential installation only. 2. Installation must be done by qualified service personnel in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 3. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances. 4. Do not install in a cooking area or connect directly to an appliance. 5. Before servicing or cleaning the unit, disconnect power from HVAC system. 6. When cutting or drilling into wall or ceiling, do not damage electrical wiring or other hidden utilities. 7. Do not use this unit with any solid-state speed control device. Use only with controller provided with the unit. 8. This unit must be installed in a weatherized location, out of direct sunlight and protected from the elements. 9. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 10. When performing installation, servicing or cleaning the unit, it is recommended to wear safety glasses and gloves. 11. Servicing shall be done by qualified service personnel. CAUTION 1. For general ventilation use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. Intended for residential installation only in accordance with the requirements of NFPA 90B and in compliance with all local and national codes that are applicable. 3. Be sure to duct air outside. Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage. 4. To avoid premature clogged filter, turn OFF the unit during construction or renovation. 5. Please read the unit specification label on the product for further information and requirements. 6. At least once a year, the unit mechanical and electronic parts should be inspected by qualified service personnel. 7. This unit must be connected to a 24-volt class 2 circuit only. NOTE: The fanless energy recovery ventilator NRFLOE or VSMARTE is designed to assist in the management of humidity introduced into the home. In extreme humidity conditions, the use of additional dehumidification may be desirable. Quickly remove all excess moisture and keep areas clean

3 TABLE OF CONTENTS 1. SERVICE PARTS DIMENSIONS SPECIFICATIONS TYPICAL INSTALLATION BEFORE STARTING INSPECT THE CONTENT OF THE BOX TOOLS AND MATERIALS LOCATING THE UNIT INSTALLATION CONFIGURATIONS INSTALL THE UNIT FRESH AIR SUPPLY PORT LOCATION BRACKETS INSTALLATION FRESH AIR SUPPLY PORT OPENING HANG THE UNIT CONNECTING THE DRAIN (NRFLOH AND VSMARTH UNITS ONLY) DUCTING INSTALLING NON-INSULATED DUCT CONNECTING THE INSULATED DUCTS TO THE UNIT INSTALL EXTERIOR HOOD(S) INSTALLING THE TANDEM TRANSITION KIT INSTALLING TWO EXTERIOR HOODS CONTROLLER INSTALLATION WIRING DIAGRAM AIR FLOW BALANCING CONTROLLER UNDERSTANDING CONTROLLER CHART OPERATING MODES PROGRAMMING CONTROLLER TROUBLESHOOTING WARRANTY APPENDIX A

4 1. SERVICE PARTS No. Description Part NRFLOH NRFLOE Number VSMARTH VSMARTE 1 Double collar port Damper actuator Damper kit Filter Thermistor kit* Controller* VL * PART NOT SHOWN. TO ORDER PARTS, CONTACT YOUR LOCAL DISTRIBUTOR. We have a phone line dedicated exclusively to installers. For assistance, call on weekdays, 8:00 a.m. to 5:00 p.m. (Eastern Standard Time). NOTE: Do not call these numbers for ordering parts! EXCLUSIVELY FOR NRFLOH AND NRFLOE UNITS: EXCLUSIVELY FOR VSMARTH AND VSMARTE UNITS: DIMENSIONS 12¼ ¼ 20¼ 6 Typ. VK0061A Motorized damper cable, 6 NOTE: Drain fittings on HRV units only. 3. SPECIFICATIONS MODELS NRFLOH NRFLOE VSMARTH VSMARTE WEIGHT 27 LB. 32 LB. PORT DIAMETER 6 6 DRAIN DIAMETER ½ N/A INSTALLATION BRACKETS (PROVIDED WITH THE UNIT) BRACKETS (PROVIDED WITH THE UNIT) ELECTRICAL SUPPLY 24 VOLTS, AC 24 VOLTS, AC POWER CONSUMPTION 5 VA 5 VA OUTSIDE TEMPERATURE DEFROST CYCLES (MINUTES) CELSIUS ( C) FAHRENHEIT ( F) DEFROSTING OPERATION TIME (BETWEEN EACH DEFROST CYCLE) -5 TO TO AND LESS -17 AND LESS

5 4. TYPICAL INSTALLATION The figure below illustrates a typical installation. In every case, the fresh air to building port of the unit must be connected to the return duct (plenum) of the furnace/air handler. The stale air from inside the duct must be connected to the supply duct of the furnace/air handler. All units are mounted to the forced air unit return duct using provided brackets. NOTE: For more details, see Point 7.4 in Section 7 INSTALL THE UNIT. In every case, a range hood should be used to exhaust stale air from a cooking area. A part of the stale air coming from the supply duct of the furnace/air handler is exhausted to the outside. Outside fresh air is supplied to the return duct of the furnace/air handler. See figure at right. NOTE: Home with multiple furnace/air handler systems should have 1 unit on each system. VH0064 All units can be installed in the attic. In this particular case, precautions must be followed: CAUTION 1. Due to the potential temperature difference between the attic and the rest of the house, all unit ducts must be insulated. 2. The attic temperature must always be above 0 C (32 F). 5. BEFORE STARTING 5.1 INSPECT THE CONTENT OF THE BOX 0! WARNING To avoid risk of suffocation, discard the plastic bag wrapping the unit s component. Inspect the exterior of the unit and components for shipping damages. Ensure that there is no damage to the ports, controller, etc. Inspect the interior of the unit for damages. Ensure that heat or energy recovery core, insulation, dampers, filter etc. are all intact. 5.2 TOOLS AND MATERIALS Here are the tools and materials needed to perform the installation: - Electric drill with Phillips bit no. 2 - Tin snips or metal shear - Cutter pliers - Long nose pliers - Utility knife (to cut duct tape and styrofoam) - Aluminum duct tape - 24-Volt class 2 transformer - 22-AWG 4-wire cable (any UL Listed (DUZX) Type CM or CMP for U.S. A., and CSA type CMG, FT-1 or FT-4 for Canada) - Jig saw - Caulking gun and caulking - 5 -

6 5. BEFORE STARTING (CONT D) 5.3 LOCATING THE UNIT Choose an appropriate location for the unit. Close to an exterior wall, so as to limit the length of the insulated flexible duct to and from the unit. Close to a drain. If no drain is close by, use a pail to collect run-off (for NRFLOH and VSMARTH HRV units only). 6. INSTALLATION CONFIGURATION For more convenience, the unit fresh air supply port can be located on top or either at righ or left side of the unit. The illustrations below show 3 configuration types: SIDE CONFIGURATION A RETURN PARALLEL CONFIGURATION B RETURN PERPENDICULAR CONFIGURATION C RETURN VH0065A VH0066A VH0067A NOTES: 1.Side configuration (type A) applies either for right or left side port. 2.The unit can also be installed hung to the joist, or mounted to the wall. In these cases, the optional installation kit with port and chains must be used (part no ). 7. INSTALL THE UNIT 7.1 FRESH AIR SUPPLY PORT LOCATION Although the following shows how to prepare the opening on top of the unit, the procedure is the same for the ones located on sides of the unit. Using cutter pliers, remove the octogonal knock-out of the chosen opening. VR0011 CAUTION In order to prevent damages to the unit inner components, never use a blade longer than 5/8 to cut off the insulating foam. Insert the blade of a utility knife (5/8 long maximum) in the groove to cut off the insulating foam. Carefully remove the foam circle. 5/8 MAX. VR0012A - 6 -

7 7. INSTALL THE UNIT (CONT D) 7.1 FRESH AIR SUPPLY PORT LOCATION (CONT D) ALL CONFIGURATIONS (A, B AND C) Peel off the backing paper covering the sticky side of one of the included foam gasket and stick it over the fresh air supply port opening. PARALLEL AND PERPENDICULAR CONFIGURATIONS ONLY (B AND C) Peel off the backing paper covering the sticky side of the other included foam gasket and stick it upon the first foam gasket. VJ BRACKETS INSTALLATION STANDARD BRACKETS Three brackets are supplied with the unit; one hanger and two standard. See illustration beside. STANDARD BRACKETS HANGER BRACKET VR0014 According to the configuration chosen, install the standard brackets as follows: Configuration A (Side) needs one standard bracket installed below the unit, and the other one installed on top of unit, towards the same side of the fresh air supply port. Configuration B (Parallel) needs one standard bracket installed on the opposite side of the hanger bracket, and the other one is located near the fresh air supply port. Configuration C (Perpendicular) needs both standard brackets, installed on each side of the unit. See illustration below. A B C VR0017 HANGER BRACKET If parallel (B) or perpendicular (C) configuration is chosen, the hanger bracket must be modified. Using long nose pliers, bend the foldable part of the bracket at 90 towards its inner side. See illustration beside VR0015

8 7. INSTALL THE UNIT (CONT D) 7.2 BRACKETS INSTALLATION (CONT D) Install the included template corresponding to the chosen configuration on the furnace/air handler return duct. The minimum linear distance between the opening and the furnace/air handler unit return opening must comply with your local building code. According to your furnace/air handler ducts position, choose the most convenient configuration type. Using provided metal screws, mount the hanger bracket to the return duct, on the location shown on the template. In side configuration (A), install the unchanged hanger bracket. In parallel or perpendicular configuration, lean the folden part of the modified hanger bracket on the bottom edge of the return duct to ensure its proper location. See illustration beside. VR FRESH AIR SUPPLY PORT OPENING 0! WARNING When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety regulations. Please refer to your local building code. Using the template, trace a round opening on the furnace/air handler return duct. Cut out the round opening traced on the furnace/air handler return duct. VR HANG THE UNIT Remove the template from the duct and hang the unit to the hanger bracket. Then, use the provided screws and the standard bracket(s) mounted on the unit to secure it to the furnace/air handler return duct. VD0192 0! WARNING Using the adjustment slots on standard brackets, make sure the foam gasket seals completely the round duct opening. Then, permanently secure the standard brackets on unit using one screw in one center hole

9 8. CONNECTING THE DRAIN (NRFLOH AND VSMARTH UNITS ONLY) A 1. Insert the plastic tubing in the stale air from building port and punch out both drain holes, inside the unit. 2. Hand tighten the 2 plastic drain fittings (A) using the gaskets (B) and nuts (C) as shown. 3. Cut 2 sections of plastic tubing; about 12 (305 mm) long, and attach them to each drain fitting as shown. Join both short sections to the T junction and main tube as shown. 4.Make a water trap loop in the tube to prevent the unit from drawing unpleaseant odors from the drain source. Make sure this loop is located BELOW the T as shown. This will prevent water from being drawn back up into the unit in case of negative pressure. Run the tube to the floor drain or an alternative drain pipe or pail. Be sure there is a slight slope for the run-off VO0119 B C TIE WRAP TO DRAIN 9. DUCTING 9.1 INSTALLING NON-INSULATED DUCT Stale air exhaust duct SUPPLY RETURN Cut a 6 diameter opening into the furnace/air handler supply plenum. NOTE: If there is a A AC coil inside the supply plenum, the 6 diameter opening must be located between the A AC coil and the first branch of the supply plenum. Connect this opening with the stale air from building port. Use only metal duct. VJ0054A FIRST BRANCH FURNACE/AIR HANDLER SUPPLY PLENUM NOTE: If increased exhaust airflow is needed, a 90 elbow (scoop) should be installed in the supply plenum as pictured. A COIL 90 ELBOW VD

10 9. DUCTING (CONT D) 9.2 CONNECTING THE INSULATED DUCTS TO THE UNIT Use the following procedure for connecting the insulated flexible duct to the ports on the unit (exhaust to outside and fresh air from outside). a) Pull back the insulation to expose the flexible duct. b) Connect the interior flexible duct to the port using a duct tie. c) Carefully seal the connection with duct tape. d) Pull the insulation over the joint and tuck it between the inner and outer rings of the double collar. e) Pull the vapor barrier over the insulation and over the outer ring of the double collar. f) Apply duct tape to the joint making an airtight seal. Avoid compressing the insulation when you pull the tape tightly around the joint. Compressed insulation loses its R value and causes water dripping due to condensation on the exterior surface of the duct. CAUTION Make sure that the vapor barrier on the insulated ducts does not tear during installation to avoid condensation within the duct. a) b) c) d), e) f) VJ INSTALL EXTERIOR HOOD(S) 10.1 INSTALLING THE TANDEM TRANSITION* KIT The joist opening needed to install the Tandem transition must be 9¾ minimum. The maximum height of the Tandem transition is 8¾. To connect the insulated flexible ducts to the Tandem transition (Exhaust air to outside and Fresh air from outside), follow the instructions included with the Tandem transition kit (part #14690). *Patent Pending. VR0003 Tandem transition kit NOTE: If the joists are perpendicular to the ducts, or if the connection to the exterior hood is in a limited area, the installation will need 2 exterior hoods instead of one. See next Section 10.2 INSTALLING 2 EXTERIOR HOODS

11 10. INSTALL EXTERIOR HOOD(S) (CONT D) 10.2 INSTALLING 2 EXTERIOR HOODS Choose an appropriate location to install the exterior hoods: There must be a minimum distance of 6 feet (1.8 m) between the hoods to avoid cross-contamination. There must be a minimum distance of 18 inches (457 mm) from the ground. Make sure the intake hood is at least 6 feet (1.8 m) away from the following: Dryer exhaust, high efficiency furnace vent, central vacuum vent Gas meter exhaust, gas barbecue grill Any exhaust from a combustion source Garbage bin and any other sources of contamination Refer to figure below for connecting insulated ducts to the exterior hoods. An Anti-gust intake hood should be installed in regions where a lot of snow is expected to fall. EXHAUST HOOD 6 Ø (152 MM) INTAKE HOOD 18 (457 MM) 6 (1.8 M) 18 (457 MM) 6 (1.8 M) OPTIONAL DUCT LOCATION 18 (457 MM) TAPE AND DUCT TIE VD

12 CONTROLLER INSTALLATION 0! WARNING Always disconnect the furnace/air handler before making any connections. Failure in disconnecting power could result in electrical shock or damage of the wall control or electronic module inside the furnace/air handler. 1. Determine the more convenient location for the controller. It can be located up to 6 feet from the ventilation unit. 2. Remove the cover plate controller. 3. Connect the unit cable connector to J4 connector on controller electronic board. VE Perform the electric connection between J1 and J3 connectors on controller electronic board and thermostat terminal and furnace/air handler. Refer to picture and figure below or to the wiring diagram on next page. J1 CONNECTOR J3 CONNECTOR THERMOSTAT TERMINAL W R G Y ENERFLO UNIT TERMINALS W R G C Y J1 GT G R J3 N 24 NOTE If air handler transformer is not powerful enough, connect J3 connector to an additional 24 V AC Class 2 transformer. FURNACE/AIR HANDLER 24 VOLTS VE0152A TERMINAL COOLING SYSTEM VE

13 12. WIRING DIAGRAM 0! WARNING Always disconnect the furnace/air handler before making any connections. Failure in disconnecting power could result in electrical shock or damage of the wall controller or electronic module inside the furnace/air handler. t o R1 Outdoor temperature sensor A2 EXT FOUR 1 2 J1 J DAMPER ELECTRONIC ASSEMBLY G FROM THERMOSTAT G TO AIR HANDLER R FROM AIR HANDLER R FROM AIR HANDLER C FROM AIR HANDLER NOTE 3 t o RED BLU GRN BRN YEL ORA R Air handler supply temperature sensor J4 GT G R J1 N 24V J J J6 CFM MEAS CFM % CODE PVENT DS2 DS3 DS4 DS5 DS1 S1 JP1 S2 YELLOW RED GREEN BLACK M1 Damper motor 24VAC / 60Hz A1 ELECTRONIC ASSEMBLY COLOR CODE NOTES BLACK 1. If any of the original wire, as supplied, must be BLU BLUE replaced, use the same equivalent wire. BRN BROWN 2. Field wiring must comply with applicable codes, GRN GREEN ordinances and regulations. ORA ORANGE 3. If air handler transformer is not powerful enough, RED RED use an additional 24 V AC Class 2 transformer. YEL YELLOW LOGIC DIAGRAM G FROM THERMOSTAT G TO AIR HANDLER R FROM AIR HANDLER J1 GT G R K3 J1 R FROM AIR HANDLER C FROM AIR HANDLER NOTE 3 J3 N 24V t o R1 Outdoor temperature sensor EXT FOUR 1 2 J RED BLU GRN BRN YEL ORA t o R Air handler supply temperature sensor J CPU K2 K3 12VDC K2 A2 DAMPER ELECTRONIC ASSEMBLY M1 A1 ELECTRONIC ASSEMBLY VE0151A Damper motor 24VAC / 60Hz

14 13. AIR FLOW BALANCING Balance the unit according to local code requirements. If desired, refer to Appendix A ESTIMATED AIRFLOW DEPENDING OF INSTALLATION AND AVAILABLE STATIC PRESSURES IN THE FURNACE DUCTING on page 18. What you Need to Balance the Unit A magnehelic gauge capable of measuring 0 to 0.5 inches water gauge (0 to 125 Pa) and 2 plastic tubes. Two flow collars. Preliminary Stages for Balancing the Unit Close all windows and doors. Turn off all exhaust devices such as: range hoods, dryers and bathroom fans. VP0005 flow collar Installation of Flow Collars B Insert the flow collars in the insulated ducts as follows: On the fresh air from outside duct (first measuring location, A) On the exhaust air duct (second measuring location, B) Make sure their arrows are pointing in the direction of the airflow. Tape collars in place temporarily. Balancing Procedure VJ0056 A S2 1. On controller board, jump BLACK and GREEN terminals. YELLOW RED GREEN BLACK 2 Turn the furnace/air handler blower ON. Wait until booting sequence is done. VE Place the magnehelic gauge on a level surface and adjust it to zero. 4. Connect tubing from gauge to flow collar in fresh air stream (location A above). Be sure to connect the tubes to their appropriate high/low fitting. If the gauge reading drops below zero, reverse the tubing connections. Hold or place the magnehelic gauge upright and level. Record the reading. LOW HIGH FLOW VP Move tubing to the other flow collar (location B above) and note reading. Adjust an exhaust air balancing damper (field supplied) until the reading at B is approximately the same as the reading at A. If the reading at B is less than the reading at A, then go back and adjust the fresh air balancing damper (field supplied) to equal the exhaust air flow. 6. Remove flow collars and reconnect the duct, then seal with aluminum duct tape. Write the required airflow information on a label and stick it near the unit for future reference: (date, maximum speed airflows, your name and phone number and business address). LOW HIGH FLOW 7. Remove jumper between BLACK and GREEN terminals. NOTES: Most flow collar kits provide a conversion chart situated on the collar which enables you to convert magnehelic gauge readings to equivalent cfm values. A difference of ± 10 cfm ( ± inches water gauge) between the 2 readings is considered balanced VP0004

15 14. CONTROLLER Remove the controller cover to access its electronic board UNDERSTANDING CONTROLLER CHART In the upper right section of the controller board, there is a chart beside a scaled LED indicator (DS1). See beside. This chart shows the preset values available to program the controller. First column is for the CFM measured on exhaust air to outside duct, when balancing the unit (see previous Section Air Flow Balancing). Second column is for the CFM allowed according to your local building code. Third column is the percentage of air exchange, during a 60-minute cycle. For example, a 10% value means the unit exchanges air with the outside during 6 minutes every hour. There is a LED below each column. Beside the chart is a scaled LED indicator (DS1). Starting from the bottom, the LEDs light up to indicate which value has been chosen on the chart OPERATING MODE CFM MEAS CFM % CODE PVENT DS2 DS3 DS4 DS5 DS1 S1 S2 button controls the operating modes. Refer to table below for choosing operating mode. NOTE: When activating the controller for the first time, S1 lights up RED for approximately 20 seconds to indicate the controller is booting. Once booting is done, S1 shuts off. VE0154 S2 PRESSING ON S2 BUTTON DS5 LED COLOR RESULTS ONCE GREEN UNIT IS RUNNING IN PERCENTAGE VENTILATION MODE. THIS MODE ALLOWS THE UNIT TO (PERCENTAGE VENTILATION MODE) EXCHANGE WITH THE OUTSIDE AS LONG AS THE PERCENTAGE VALUE ENTERED WHEN PROGRAMMING THE CONTROLLER, ON A 60-MINUTE CYCLE. FOR EXAMPLE, IF THE VALUE ENTERED WAS 20, THIS MEANS THE UNIT WILL EXCHANGE WITH THE OUTSIDE DURING 12 MINUTES ON A 60-MINUTE CYCLE (20% OF 60 MINUTES). TWICE YELLOW UNIT IS RUNNING IN CODE COMPLIANCE MODE. THIS MEANS THE UNIT TAKES IN (CODE COMPLIANCE MODE) ACCOUNT THE CFM MEASURED VALUE WITH THE CFM CODE VALUE ENTERED TO DETERMINE HOW LONG THE UNIT WILL EXCHANGE WITH THE OUTSIDE DURING A 60-MINUTE CYCLE. SEE EXAMPLES BELOW. THREE TIMES SHUTS OFF UNIT IS OFF. CODE COMPLIANCE MODE EXAMPLES: Example 1: CFM Code value entered: 70 CFM = 78% The unit will be exchanging with the outside during 47 minutes CFM Measured value entered: 90 CFM on a 60-minute cycle. Example 2: CFM Code value entered: 100 CFM = 200% Since this value exceed the 100% maximum value, the unit CFM Measured value entered: 50 CFM will be exchanging with the outside during 60 minutes on a 60-minute cycle

16 14. CONTROLLER (CONT D) 14.3 PROGRAMMING CONTROLLER NOTE: The controller is factory set to the following values: CFM measured: 90, CFM code: 70 and % PVENT: 30%. A. PROGRAMMING CFM MEAS 1 Press S1 for 3 seconds to start programming. The LED under the CFM measured column ligths up. 2 Press on S2 to enter the CFM measured value corresponding to the one measured on exhaust to outside duct. On example beside, the LED under the CFM measured column is lit, and the second and third LED of DS1 are also lit. This means the CFM measured value entered is 70 CFM. NOTE: If the value to be entered has been 60, only the second LED would have been lit, and for a 80-CFM value, it would have been only the third one. For the in-between values, 2 LEDs must be lit. B. PROGRAMMING CFM CODE 1 Press on S1 to access to the second column; the LED under the second column will light up while the one under the first one will turn off. 2 Press on S2 to enter your CFM code value. Use the DS1 LEDs to see the value entered. C. PROGRAMMING % PVENT CFM MEAS VE0155 CFM CODE % PVENT DS1 S1 1 Press on S1 to access the third column; the LED under the second column will turn off while the one under the third column will light up. 2 Press on S2 to enter your % PVENT value. Use the DS1 LEDs to see the value entered. Once programming is done, press on S1 for 3 seconds to record the settings. NOTE: A power failure doesn t affect the controller settings. When the power is back, after the booting sequence, the controller returns to its previous setting. Reinstall the controller cover. 15. TROUBLESHOOTING When DS5 LED flashes RED and DS2, DS3 or DS4 LED is flashing on the controller, this means the unit sensors detected a problem. Refer to the table below to know where on the unit the problem occurs. DS2 LED flashes with DS5 LED Damper actuator error. Replace the damper actuator. DS3 LED flashes with DS5 LED Exterior thermistor error. Replace the exterior thermistor. DS4 LED flashes with DS5 LED Internal thermistor error. Replace the internal thermistor

17 16. WARRANTY WARRANTY Venmar Ventilation inc. or vänee Canada warrants to the original purchaser of its products that such products will be guaranteed against all manufacturing defects and defective material for a period of two (2) years from the date of original purchase. The heat recovery core is protected by a limited lifetime warranty and the energy recovery core is protected by a 5-year warranty. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. VENMAR VENTILATION INC. OR VÄNEE CANADA WILL NOT BE HELD RESPONSIBLE FOR ANY CLAIMS OVER THE ORIGINAL PURCHASE PRICE OF A UNIT, NOR HELD RESPONSIBLE FOR SUBSEQUENT DAMAGE OR INCIDENT. During the period stated above, Venmar Ventilation inc. or vänee Canada will, at its option, repair or replace, without charge, any product or part which is found to be defective under normal use and service. This warranty does not cover a) normal maintenance and service, b) any products or parts which have been subject to misuse, negligence, accident, improper maintenance or repairs made by other than Venmar Ventilation inc. or vänee Canada, or c) a faulty installation contrary to recommended installation instructions. The duration of any implied warranty is limited to the 2-year period as specified for the express warranty. Somes States or provinces do not allow limitation on how long an implied warranty lasts, so the above limitation may not apply to you. VENMAR VENTILATION INC OR VÄNEE CANADA S OBLIGATION TO REPAIR OR REPLACE, AT VENMAR OR VÄNEE S OPTION, SHALL BE THE PURCHASER S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY. VENMAR OR VÄNEE SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH PROD- UCT USE OR PERFORMANCE. SOME STATES OR PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. This warranty gives you specific legal rights and you may also have other rights, which vary from State or province to another. This warranty supersedes all prior warranties. To contact Venmar Ventilation inc. or vänee Canada warranty service, call (Canada and United States). In order to qualify for a warranty claim, the owner of a unit must have the model and serial number along with a proof of the original purchase date. At the time of requesting service, describe the nature of any defect in the product or part. In case of discrepancies between the English and the French versions of the warranty, the English version will prevail

18 APPENDIX A ESTIMATED AIRFLOW DEPENDING OF INSTALLATION AND AVAILABLE STATIC PRESSURES IN THE FURNACE DUCTING