7
INSTALLATION EXAMPLES
(CONT'D)
DIRECT CONNECTION of both the ERV SUPPLY AIR STREAM and EXHAUST AIR STREAM
to the FURNACE COLD AIR RETURN
SIMPLIFIED INSTALLATION
(GOOD)
(RETURN/RETURN METHOD)
Suggested installation for:
• When bathroom and kitchen
already have local exhaust
system
• May be suitable for
retrofitting
Benefits:
Least expensive
installation type
1. Furnace blower must operate when ventilation from ERV is required. The furnace should
be set to run continuously or interlocked with ERV.
See furnace electrical connection
on page 15.
2. A minimum separation of 1m (39’’) is recommended between the two direct
connections.
3. In order to prevent exhausting any fresh air, the ERV’s exhaust air connection should be
upstream of the ERV’s supply air connection when ducting to the furnace’s cold air return.
4. Due to the difference in pressure between the ERV and the equipment it is being
connected to the ERV’s airflow must be balanced on site, using the procedure found in the
section “AIRFLOW BALANCING”
* In the case of a multi-zone system, please contact Fantech customer
service prior to installing any installation type requiring the use of the
furnace interlock"
Air from inside
* Unit air flow should be balanced while ERV is on "Normal" speed and
furnace blower is running.
Outside
1 m (3' 3")
min.
recommended
Cold air
return
* Ductwork layout may dif-
fer depending on model
ERV/Furnace ducting for Simplified Installation - Option 1
Stale air to
outside
Fresh air from
outside
1 m (3' 3") min.
recommended
Fresh air to
living areas
