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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. See
furnace electrical connection on page 16.
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"
* 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"
HRV/ furnace for Simplified Installation
Stale air from inside
Fresh air from
Outside
Stale air to
outside
Fresh air to
living areas
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
1 m (3' 3")
min.
recom-
mended
1 m (3' 3")
min.
recom-
mended
Cold air
return
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