The Simplified Installation (Return/Return Method)
•It is mandatory that the furnace run continuously or HRV operation be interlocked with the furnace.
•Check local codes/authority having jurisdiction for acceptance.
FOUR PORT MODELS
WARNING
HRV must be balanced.
Refer to “Airflow Balancing” in this manual.
3' (1 m) min. recommended
OutdoorsCool Air
Return
NOTES:
1.Furnace blower is required to operate when ventilation from HRV is required. The furnace must be set to run continuously or interlocked with HRV.
2.A minimum separation of 40 inches (1 m) 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.Weatherhood arrangement is for drawing purposes only. Six feet (2 m) minimum separation required. Eighteen inches (460 mm) above grade minimum.
5.Due to the differences in pressure between the HRV and the equipment it is being connected to, the HRV's airflow must be confirmed on site, using the balancing procedure found in the installation manual.
Furnace
*Unit is normally balanced on HIGH speed with air handler blower ON.
FIVE PORT MODELS - Simplified Installation for Models RNC10/RNC20
Outdoors |
| Return Air |
| 40" (1m) MINIMUM | |
|
| |
|
| 3' (1 m) min. |
| Stale Air To Outside | recommended |
|
|
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.
Cool Air |
|
Return |
|
| Fresh Air To House | Air |
| |
| High efficiency filter | Handler |
| or electronic air cleaner |
|
*Unit is normally balanced on HIGH speed with air handler blower ON.
CAUTION
Weatherhood 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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