Maytag ERV-210, HRV-210, HRV-150, ERV-150 manual Method 1 return-supply, Method 2 return-return

6.0

Installation(cont’d)

6.5Installing the Ductwork and Registers (cont’d)

6.5.3Simplified installation (Volume Ventilation) (as illustrated in Section 5.3)

010! WARNING

When performing duct connection to the furnace, installation must be done in accordance with all applicable codes and standards. Please refer to your local building code.

CAUTION

When performing connection to the furnace ducts (Method 1), these ducts must be sized to support the additional airflow produced by the HRV/ERV. Also, the supply duct must be a steel duct with a backdraft damper to prevent the risk of overheating HRV/ERV.

There are two methods (figures 12 and 13) for connecting the unit to the furnace:

Method 1: return-supply Method 2: return-return

Steel duct with backdraft damper

	minimum
	18” (0.5 m)	A
A		B A+B= not less
	B	than 10’ (3.1 m)
		minimum 3’
		VD0043
A+B= not less		(0.9 m)
VD0042		figure 13
than 10’ (3.1 m)

figure 12

Stale air intake:

•Cut an opening into the furnace return duct (not less than 10 feet (3.1 m) from the furnace (A+B)).

•Connect this opening to the stale air intake port on the HRV/ERV as shown .

CAUTION

If using Method 2, make sure the furnace blower operation is synchronized with the HRV/ERV operation! See Section 8.4.

Fresh air distribution: (same instructions as for Method 1 or Method 2, Section 6.5.2). For method 2 (return-return) make sure there is a distance of at least 3 feet (0.9 m) between the 2 connections to the furnace.

NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the HRV/ERV operation, but we recommend it.

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