Broan ERV90HCT, HRV90HT installation instructions Stale air intake, Fresh air distribution

3.INSTALLATION (CONT’D)

3.6INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)

3.6.3 SIMPLIFIED INSTALLATION (AS ILLUSTRATED IN SECTION 2.3)

!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.

CAUTION

When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow produced by the HRV/ERV. Also, use a steel duct. For a Return-Return installation, the furnace blower must be in operation when the HRV/ERV is in operation.

There are 2 methods for connecting the unit to the furnace/air handler:

Method 1: Supply-return connection Method 2: Return-return without

MINIMUM 18”	A+B= NOT LESS
	THAN 10’ (3.1 M) A
(0.5 M)
STEEL DUCT	MINIMUM 3’
A	(0.9 M)
B
A+B= NOT LESS	VJ0038
THAN 10’ (3.1 M)
VJ0037

Stale air intake

B

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

•Connect this opening to the Exhaust air from building port of the HRV/ERV.

Fresh air distribution

•Same instructions as for Method 1 or Method 2, Section 2.6.2.

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/air handler.

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

CAUTION

If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit operation! See Section 5.

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