Simplified Installation (Volume Ventilation) - Broan ERV100HC Installer Manual

6.0 Installation
6.5 Installing the Ductwork and Registers
6.5.3 Simplified installation
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.
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
Steel duct with
backdraft damper
A
A+B= not less
VD0042
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 .
If using Method 2, make sure the furnace blower operation is synchronized with the HRV/ERV
operation! See Section 8.4.
Fresh air distribution:
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.
(cont'd)
(Volume Ventilation) (as illustrated in Section 5.3)
!
WARNING
010
CAUTION
minimum
18" (0.5 m)
B
CAUTION
(same instructions as for Method 1 or Method 2, Section 6.5.2).
19
(cont'd)
Method 2: return-return
A
minimum 3'
VD0043
(0.9 m)
figure 13
A+B= not less
B
than 10' (3.1 m)