Simplified Installation - Greentek Profile 1.2E Series Installation, Operation And Maintenance Manual

Fresh air appliance
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Installation examples (Cont'd)
DIRECT CONNECTION of both the ERV SUPPLY AIR STREAM and EXHAUST AIR STREAM
to the FORCED AIR SYSTEM COLD AIR RETURN
SIMPLIFIED INSTALLATION (GOOD)
(RETURN/RETURN METHOD)
1.
Forced air system blower must operate when ventilation from ERV is
required. The system should be set to run continuously or interlocked with
ERV. See forced air system electrical connection.
2.
A minimum separation of 1 m (39'') is recommended between the two
direct connections.
3.
The ERV's exhaust air connection should be upstream of the ERV's supply
air connection to prevent exhausting any fresh air.
4.
Before operation, the ERV's airflow must be balanced on site. For this, use the
procedure found in the section "AIRFLOW BALANCING". During the balancing
procedure, make sure the forced air system blower is running and the ERV
is running at "Normal" speed.
5.
In the case of a multi-zone system, please contact customer service prior
to installing any installation type requiring the use of the forced air system
interlock.
ERV/Forced air system ducting for Simplified Installation
* Ductwork layout may dif-
fer depending on model
Fresh air from
outside
Outside
Stale air to
outside
For ERVs that do not include an outdoor air motorized damper: If you are using a partially dedicated or
simplified installation, i.e. connecting the ERV supply air duct to a forced air system's return air duct,
the ERV must operate continuously. When the ERV is turned off, no warm exhaust air will flow through
the ERV but the forced air system's blower will continue to draw in outdoor air through the ERV. When
this happens, the introduction of unconditioned outdoor air to the indoors can increase the load on the
system.
If the ERV is installed so that the homeowner can turn off the ERV, we recommend installing a motor-
ized damper between the ERV's supply air and the forced air system's return air duct that will close
when the ERV is not operating. To install a damper accessory to the product, locate the auxiliary
connector on the side of the electrical box. See Figure 1. Using the included wire harness, connect the
damper accessory to the product.
Air return
Air from inside
Fresh air to
living areas
1 m (3' 3")
min.
recommended
1 m (3' 3") min.
recommended
Fresh air return
*Auxiliary connector for external damper wire
Suggested installation for:
• When bathroom and
kitchen already have local
exhaust system
• May be suitable for
retrofitting
• Recommended units: P
1.2E-D and P 1.2E-D-EC – to
avoid drawing outdoor air
directly into the forced air
system when the unit is not
running
Benefits: Least expensive
installation type
Forced Air
System
Figure 1
harness, damper motor not included"
7

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