Quest CDG 74
Installation, Operation and Maintenance Instructions
1-877-420-1330
5
www.QuestHydro.com
•
DO NOT use the Quest CDG 74 as a bench or table.
• It must always be used in the upright position.
• The air inlet on top and the front outlet must be at least 1 foot from walls and other obstructions to air flow.
• If the humid area is very large, dehumidification can be improved by adding an outlet duct to circulate air to stagnant
areas (see Sec. 2.5).
2.3 Electrical Requirements
The Quest CDG 74 plugs into a common grounded outlet on a 15 amp circuit. It draws 5.5 amps at 80°F, 60% RH. If
used in a wet area, a ground fault interrupter (GFI) is required. If an extension cord is required, it must have a minimum
of 14 gauge conductors if 25 feet long or less and 12 gauge conductors if greater than 25 feet long.
2.4 Condensate Removal
The Quest CDG 74 is equipped with an internal condensate pump to remove the water that is condensed during
dehumidification. This allows the condensate to be pumped up to 20 feet with the attached hose. If the condensate must
be pumped more than 20 feet above the unit, a second pump must be added to relay the condensate. The condensate
pump automatically purges when the reservoir is full. Use the PURGE button to manually remove condensation.
2.5 Ducting
A wire duct collar is supplied to allow 10” lay-flat duct to be attached to the Quest CDG 74 outlet. Lay-flat plastic
ducting is available; see accessories table page 6. To attach ducting to the wire duct collar, put the plastic duct end
through the collar center and roll the duct end outward so that it overlaps the outside of the collar. The duct and collar
may then be quickly attached to the Quest CDG 74 by snapping the collar over the four exhaust tabs.
2.6 Defrost Cycle
If the low side refrigerant temperature drops due to excessive frost formation on the evaporator coil and below the
temperature set point, the thermistor activates the solid-state control and defrost light. The compressor is cycled off
and on by the thermistor temperature measurement. The air mover will continue to run, causing air to flow through the
evaporator coil and melt the ice when the compressor is off. When the air temperature and/or humidity increases, the
evaporator temperature will rise and the thermistor will end the defrost cycle at the temperature set point.
2.6 POWER Button
Press the POWER button to turn the dehumidifier on or off. When starting the dehumidifier the display will show the
accumulated hours. Press the POWER button again to turn the dehumidifier off. The display will also power off.
Quest CDG 74 control board.
