Quest DRY 105, 155, and 205
Installation, Operation and Maintenance Instructions
1-877-420-1330
9
www.QuestProtect.com
4.4F Installation in a Structure with Two Forced Air HVAC Systems
The Quest Dry can be installed into two typical HVAC ducting systems. Install a separate return for the Quest Dry as
directed above. Discharge air from the dehumidifier should be split and routed to each supply ducting system. A balancing
damper and a backdraft damper is required in each duct between the Quest Dry and the HVAC ducting system. This allows
airflow to be adjusted and prevents flow of air between the ducting systems. Contact the factory for assistance, if necessary.
4.4G Installation in a Structure with No Existing Forced Air HVAC System
When installing the Quest Dry in a structure that does not have a forced air HVAC system, a single return for the Quest
Dry should be installed in central open area of the structure. DO NOT locate the return in a bathroom or a kitchen.
The supply of the Quest Dry should be located in the remote areas of the structure. By ducting this way, the air inside
the structure will circulate through the Quest Dry to be filtered and dehumidified. Avoid discharging all the air from the
dehumidifier in one location to prevent heat build up in that area. 4” diameter duct is recommended for branches to the
remote rooms, 6” diameter duct is recommended for branches to larger areas. Refer to section 3.4B for branch duct sizing.
Connect an insulated duct from outside to the 6” collar of the Quest Dry if you wish to provide fresh air ventilation.
4.5 Quiet Installation
Consider compression vibration and airflow noise during installation. Use of flex duct and/or vibration isolation materials
during mounting and ducting will result in quieter operation.
A length of flexible ducting on all Quest Dry duct connections is recommended to reduce noise and vibration transmitted to
rigid ductwork in the structure.
FOR HVAC INSTALLER ONLY
Quest Dry
Dehumidifier
