SummerAire SHRV2500DD, Инструкция по установке и руководство пользователя

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SUPPL Y AIR DUCT SYSTEM
The fresh air suppl y ductwork from the HRV may be directly connected to the
return air duct of the forced air system. When directly connected, it is recom-
mended that the air handler blower be in constant operation to move the fresh
air about the building (see warning under “The Integrated HVAC System”).
Also, it is advisable to include a short length fabric flex duct or other non –
metallic connector in this hard duct line in order to keep the HRV acoustically
isolated and separately grounded (electrically) from the air handler. This will
avoid a possible shock hazard to service people if a short to ground develops in
one of the devices. It may be necessary to install a separate fresh air supply
ductwork system if the heating is other than forced air.
When installing an HRV, the designer and installer should be aware of local
codes that may require smoke detectors and / or firestops in the HVAC or HRV
ductwork. Because an HRV is designed to bring fresh air into the building,
structures may require a supply voltage interrupt when fire or smoke or flame
sensors are triggered or central fire system is activated.
Supply air grilles may be ceiling or high wall mounted. Avoid incoming fresh
air grilles that could cause a direct draft on the occupants as the incoming air
may be below room temperature. A reheat duct heater can be installed to
improve occupant comfort. Information on electric or hydronic duct heaters is
commercially available.
INST ALLATION TIPS
1. Whichever method is chosen to operate the SHRV2500, keep in mind that
Air – to – Air exchangers are not “ booster fans ”, and are not normally
sized to ventilate at a steady rate. To achieve optimum performance from
the SHRV2500, the desired ventilation rate (speed of the system) should be
reached before the contaminant has reached its’ maximum.
2. It is recommended that backdraft dampers be installed in the supply and
exhaust ductwork to the outside, to prevent air from entering in through the
HRV when the HRV is OFF. Failure to install backdraft dampers may result
in damage to HVAC equipment and / or other building components.
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