COMMERCIAL HRV OPERATION AND INSTALLATION 455FD/DD, 650FD/DD, 700FD/DD , 1200FD/DD 69-COMHRV 011118 511 McCormick Blvd. London, ON Canada N5W 4C8 General Info/Tech Support: 1 855. 247 4200 Online: www.lifebreath.
Table of Contents The Benefits of HRVs Location of the HRV for Mounting ............... 3 Optional Wireless Repeater Specifications - Model 455FD/DD ................ 4 Optional Timer ........................................... 18 Specifications - Model 700FD/DD ................ 5 Function And Controls ................................. 19 Specifications - Model 650FD/DD ................ 6 Connecting Optional Digital Controls ............ 20-21 Optional Wireless Timer .............................
The Benefits of HRVs Heat Recovery Ventilators (HRV) are designed to supply fresh air to a building while exhausting an equal amount of stale air from the building. An energy savings is experienced during the process by reducing the heating (or cooling) requirements. Fresh Outdoor Air HRV - Aluminum Core During the winter months, the incoming cold fresh air is warmed by utilizing the heat recovered from the stale air before it is exhausted to the outdoors.
Specifications 455FD/DD PERFORMANCE CONTROL OPTIONS 99-BC02 Lifebreath Ventilation Control 2 speed fan setting (Low/High) Humidity control through adjustable Dehumidistat Compatible with 99-DET02 Wireless Timers 3 wire connection; 20 gauge wire (minimum) 99-500 3 Speed Control 3 Speed Fan setting (Low/Medium/High) 4 wire connection; 20 gauge wire (minimum) 99-DH01 Lifebreath Dehumidistat Humidity control through adjustable Dehumidistat 3 wire connection; 20 gauge wire (minimum) DIMENSIONS
Specifications 700FD/DD CONTROL OPTIONS 99-BC02 Lifebreath Ventilation Control 2 speed fan setting (Low/High) Humidity control through adjustable Dehumidistat Compatible with 99-DET02 Wireless Timers 3 wire connection; 20 gauge wire (minimum) 99-500 3 Speed Control 3 Speed Fan setting (Low/Medium/High) 4 wire connection; 20 gauge wire (minimum) 99-DH01 Lifebreath Dehumidistat Humidity control through adjustable Dehumidistat 3 wire connection; 20 gauge wire (minimum) DIMENSIONS inches (mm)
50FD/DD Specifications PERFORMANCE AIRFLOW CFM (L/s) 900 (425) MOTORS Two PSC, 3 speed double shafted, 120 VAC, 3.8 Amps each (7.6 total on high speed). HP - 1/4, 1625 RPM. Watts - total on High Speed - 912. MCA: 9.5 MOP: 15 FILTERS Washable air filters in exhaust and supply air streams. 800 (378) 7.9 HIGH 700 (329) 600 (282) 7.0 MED 500 (235) 400 (190) 6.6 LOW 300 (143) 200 (94) 100 (42) BLOWERS Slide easily in / out of unit. Centrifugal type rated at 850 cfm (401 L/s) free air delivery.
Specifications 1200FD/DD PERFORMANCE AIRFLOWS (Each Air Stream) CONTROL OPTIONS 99-BC02 Lifebreath Ventilation Control 2 speed fan setting (Low/High) Humidity control through adjustable Dehumidistat Compatible with 99-DET02 Wireless Timers 3 wire connection; 20 gauge wire (minimum) 99-500 3 Speed Control 3 Speed Fan setting (Low/Medium/High) 4 wire connection; 20 gauge wire (minimum) 99-DH01 Lifebreath Dehumidistat Humidity control through adjustable Dehumidistat 3 wire connection; 20 gaug
The Ductwork System A properly designed ducting system will allow the HRV to operate at its maximum efficiency. (Air flow will be restricted by undersized ducting, use of too many elbows, tees, bends, etc.). Always try to keep duct runs as short and straight as possible. NOTE: Fully insulated ducting with an integral vapor barrier must be used on all runs passing through unheated areas in order to avoid condensation problems and energy losses from the air steams.
Stale Air Return System The stale air return system is used to draw air from the points in the building where the worst air quality problems occur. Balancing dampers and/or adjustable grilles are recommended on all return air lines which are used during installation to help balance the “draw” from different areas of the building. Alternately, the stale air may be drawn directly from the return air duct. When this system is used, the air handler’s blower must constantly operate.
The Integrated HVAC System The HRV has become an integral component of the HVAC system. Figure A shows an HRV unit providing fresh air directly to the return air plenum of a rooftop heat/cool unit. In the balanced airflow system, the HRV exhaust removes stale room air (eg. from lunch room, storage or copy area) and returns to the space an equal amount of fresh outdoor air, making the use of an economizer obsolete in conjunction with an HRV. Many buildings have ceiling return air plenum as in Figure B.
Drain Connections The HRV must be level for proper drainage of condensate from the drain pans. Install a loop or "P Trap" in the condensate line and pour a cup of water into the drain pan. This will create a water seal which will prevent odors from being drawn up the hose and into the fresh air supply of the HRV. Install the drain pans in the bottom of the HRV so the drain connections protrude through the holes provided.
HRV Defrost Strategies (Fan Defrost and Damper Defrost) Fan Defrost Models 455FD, 700 FD, 650FD, 1200FD Damper Defrost Models 455DD, 700DD, 650DD, 1200DD Fan defrost HRV's are equipped with an electronically controlled fan defrost system to remove frost that collects on the warm air side of the aluminum heat transfer surfaces of the heat exchanger core. When the outside air temperature drops below 27°F (-3°C), defrost is activated which provides for an automatic defrost cycle.
Reversing the Supply and Defrost Air Ports (Damper Defrost Units only- Models 455DD, 650DD, 700DD, 1200DD) Sometimes installation is easier if the "Supply Air from Outside" is ducted from the upper left side port (Defrost Air) instead of the top port. Changing the functionality of these two ports is easily accomplished by switching the red and yellow defrost motor wires at the circuit board. Switch T37 and T39 on the Aircom circuit board.
Optional Lifebreath Ventilation Control - Part #99-BC02 Key Features: 2 speed fan setting (LOW / HIGH) Standby setting (fan OFF) Electronic Dehumidistat Compatible with 99-DET02 Wireless Timers Slim-line design Connect to 3 wire 20 gauge low voltage wire Humidity Setting ON/OFF Button BC02 Operating Instructions: Turning on the Control Press and release the ON/OFF button above will illuminate. ON/OFF Indicator .
Optional Lifebreath Dehumidistat - Part #99-DH01 Key Features: The Dehumidistat measures the indoor humidity level and will initiate high speed ventilation when the moisture level in the building exceeds the set point on the control. Once the humidity in the building is reduced, the HRV will revert back to its previous setting. The Dehumidistat should be set to OFF for all season except the heating season. Connect to 3 wire 20 gauge low voltage wire.
Optional Lifebreath Wireless Timer - Part #99-DET02 The Timers may be installed onto a flush mounted electrical switch box or it may be surface mounted onto a wall. Multiple Timers may be installed in a ventilation system. To increase the range of a wireless Timer, a RX02 Repeater should be used. Pairing: 1. Turn on the main wall control by pressing the ON/ OFF button and remove the battery from Timer. 2. Press the left and right buttons simultaneously on the main wall control ( and ).
Optional Lifebreath Wireless Timer - Part #99-DET02 Installation of Wireless Timer 1. Separate the Face Plate from the Back Plate by firmly pulling apart (Figure A). 2. For mounting the control without a Decora plate, break off top and bottom tabs and refer to Figure C for mounting. 3. Place the Back Plate of the control in the desired location on the wall and pencil mark the top and bottom screw holes (Figure B or C). Drill two 1/8" holes. Back Plate 4.
Optional Lifebreath Wireless Repeater - Part #99-RX02 The RX02 Repeaters are to be plugged directly into a 120V power outlet 1. Turn on the main wall control by pressing the ON/OFF button . 2. Press the left and right buttons simultaneously on the main wall control ( and ). The bottom row of 3 LED's will begin flashing. This indicates that the main control is now in pairing mode. 3. The RX02 Repeater must be powered within 16” of the main wall control for pairing.
Function and Controls Basic Functions Setup Speed control is obtained by powering 24V to one of the designated speed taps. Select appropriate operational speed by installing the jumper wire between one of the designated speed taps. (A jumper wire is factory installed in the low speed position.) Example: A jumper between the R terminal and the G terminal will result in low speed operation.
Connecting Optional Control - Part #99-BC02 The control is to be surface mounted onto a wall. ! Only 1 master control should be installed to a ventilation system (the Face Plate on this illustration may not be exactly the same as yours). Figure B Figure A Back Plate Face Plate 1/8 in hole for screw and anchor 1 in x 3/4 in oval hole for wire opening 3. Place the Back Plate of the control in the desired location on the wall and pencil mark the top and bottom screw holes (Figure B or C). 4.
Connecting Optional Control - Part #99-DH01 The Lifebreath Dehumidistat may be installed onto a flush mounted 2" x 4" electrical switch box or it may be surface mounted onto a wall. Only 1 master control should be installed to a ventilation system (the Face Plate on this illustration may not be exactly the same as yours). 1. Remove the Operating Instructions Card from the top of the Control (Figure A).
Pitot Tube Air Flow Balancing - Commercial It is necessary to have balanced air flows in an HRV. The volume of air brought in from the outside must equal the volume of air exhausted by the unit.
Service and Maintenance Servicing your HRV on a regular schedule will result in optimum operating efficiencies and prolonged life of the equipment. Due to numerous applications in which this equipment can be installed, it is difficult to predict servicing intervals. In certain situations where there is heavy smoke, servicing the equipment every one - two months may be needed; whereas ventilating a meeting room for carbon dioxide may only need service every six months to a year.
Service and Maintenance Filters Open front service door to access the filters located in both supply and exhaust air streams. Note to remove and install filters, it may be easier to first remove the core(s). Refer to HRV Core. The filters are designed to stop large particles from entering in the core. The filters are fastened in place by a metal spring rod. To remove filters from core(s) simply pull the rod from one end, outward until free from core lip, and remove.
Reverse Installation of the HRV Electrical Box Removal: Damper Removal: Remove the door panels from the HRV by loosening the screws located on the face of the doors. Remove the electrical box cover by removing the 4 screws fastening the cover in place. 9. Cut cable tie fastening thermistor wire to bracket, disconnect thermistor from circuit, and remove thermistor.
Reverse Installation of the HRV (Continued) Reinstalling the Electrical Box: 21. Remove the two snap plugs from the opposite side of the cabinet for electrical and control wires. 22. Install the two snap plugs in the cabinet holes on the side of the HRV which electrical box was originally removed from. 23. Route wires for both blower motors to opposite side of HRV cabinet where electrical box is to be installed. 24.
Aircom Relays Models 455, 650, 700, 1200 The Aircom circuit board has three available “dry contact” relays. Contact 3 is not available. Maximum 115V 10 amp resistive load. Contact 2 and 4 These relays initiate whenever the HRV fans are operating. Aircom Relays Use contact 2 or 4 to interlock the HRV to an Air Handler or Furnace. Connecting the HRV as illustrated will ensure the Air Handler Blower Motor is operating whenever the HRV is ventilating.
Troubleshooting Your HRV System Symptom Cause Solution Poor airflows 1/4 in (6 mm) mesh on outside hood is plugged Filters plugged Core obstructed House grills closed or blocked Dampers are closed if installed Poor power supply at site Ductwork is restricting HRV Improper speed control setting HRV airflow improperly balanced Clean exterior hoods or vents Remove and clean filter Remove and clean core Check and open grilles Open and adjust dampers Have electrician c
Fan Defrost Wiring Diagram Model 650FD 29
Fan Defrost Wiring Diagram Model 455FD 30
Fan Defrost Wiring Diagram Models 700FD, 1200FD 31
Damper Defrost Wiring Diagram Models 455DD, 650DD, 700DD, 1200DD 32
COMMERCIAL LIFEBREATH® HEAT RECOVERY VENTILATORS 2 Year Limited Warranty • 15 Year HRV Core Warranty AIRIA BRANDS INC.® (AIRIA) warrants to the original purchaser of the Commercial LIFEBREATH® model and accessories referred to below, to be free from manufacturing defects.
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