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, unless using the optional Automatic fresh air bypass (part #15391), this duct must be sized to support the additional airflow produced by the HRV/ERV. Also, use a steel duct. For a
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: | Method 2A: | |
| Automatic fresh air bypass |
|
| A+B= NOT LESS |
|
MINIMUM 18” | THAN 10’ (3.1 M) |
|
A |
| |
(0.5 M) |
| |
STEEL DUCT | MINIMUM 3’ | B |
| ||
A | (0.9 M) | |
|
| |
B |
|
|
A+B= NOT LESS |
|
|
THAN 10’ (3.1 M) | VJ0038 |
|
VJ0037
Method 2B:
A |
|
|
| AUTOMATIC FRESH | ||
|
|
| B |
| AIR BYPASS | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C
VJ0034
DISTANCE A: MINIMUM 3’ (0.9 M)
B+C= NOT LESS THAN 10’ (3.1 M)
Stale air intake
•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 3.6.2.
For Method 2
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, unless the optional Automatic fresh air bypass (part #15391) is installed, make sure the furnace/air handler blower operation is synchronized with the unit operation! See Section 5.
- 12 -