Application Illustrations | |
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Simplified Installation for HRV
(Return/Return Method)
●It is mandatory that the air handler blower run continuously or HRV operation be interlocked with the air handler blower.
●Check local codes/authority having jurisdiction for acceptance.
WARNING
HRV must be balanced.
DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and
EXHAUST AIR STREAM to the AIR HANDLER COLD AIR RETURN
| Return Air | *Unit is normally balanced on |
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40" (1m) MINIMUM | 3’ (915 mm) min. | HIGH speed with air handler |
Outdoors | recommended | blower ON. |
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Exhaust Air to Outside |
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Fresh Air From Outside 
Fresh Air to Building
Cool Air
Return
NOTES:
1.Air handler blower must operate when ventilation from HRV is required. The air handler should be set to run continuously or interlocked with HRV.
2.A minimum separation of 40 inches (1m) is required between the two direct connections.
3.The exhaust air connection should be upstream of the supply air connection to prevent exhausting any fresh air.
4.Weather hood arrangement is for drawing purposes only. Six feet (2m) minimum separation required. 18" inches (460mm) above grade minimum or above anticipated snow level.
5.Due to the differences in pressure between the HRV and the equipment it is being connected to, the HRV's air flow must be confirmed on site, using the balancing procedure found in the installation manual.
Air
Handler
High efficiency filter
or electronic air cleaner
WARNING
Defrost air port needs to be drawn from clean area without combustion appliances. To avoid backdrafting of combustion products, never draw defrost air from a room with a naturally aspirated appliance, i.e. furnace, hot water heater, gas dryer, stove, fire place etc.
CAUTION
Weather hood arrangement - requires a minimum of 6' (2m) separation and a minimum of 18" (460mm) clearance above grade or anticipated snow level.
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