Simplified Installation - SystemAir Fantech FLEX 100H VHR70R Manuel D'installation

INSTALLATION EXAMPLES (CONT'D)
DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and EXHAUST AIR STREAM
to the FURNACE COLD AIR RETURN

SIMPLIFIED INSTALLATION

(GOOD)
(RETURN/RETURN METHOD)
1. Furnace blower must operate when ventilation from HRV is required. The furnace should
be set to run continuously or interlocked with HRV.
2. A minimum separation of 1m (39'') is recommended between the two direct
connections.
3. In order to prevent exhausting any fresh air, the HRV's exhaust air connection should be
upstream of the HRV's supply air connection when ducting to the furnace's cold air return.
4. Due to the difference in pressure between the HRV and the equipment it is being
connected to the HRV's airflow must be balanced on site, using the procedure found in
the section "AIRFLOW BALANCING"
HRV/ furnace for Simplified Installation – Option 1
Outside
Stale air to
outside
Stale air from inside
Fresh air from
outside
* Unit airflow should be balanced while HRV is on
"Normal" speed and furnace blower is running.
Suggested installation for:
• When bathroom and kitchen
already have local exhaust
system
• May be suitable for
retrofitting
Benefits: Least expensive
installation type
Fresh air to
living areas
1 m (3' 3")
min.
recom-
mended
Cold air
return
7