Quest – Sunlight Supply Quest Dual 155 Overhead Dehumidifier User Manual

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Asset Protection and IAQ Solutions



Quest 105, 155, and 205 Dual

Installation, Operation and Maintenance Instructions


CAUTION! For proper drainage, the unit must be mounted so the drain outlet is at

least 4” above the floor drain, and must be fully supported under the base.

4.3 Condensate (Water) Removal

Condensate drains by gravity via the drain port. Use 3/4” male NPT PVC pipe. Route drain to drain. Install
a trap if possible. Take care when installing drain pipe to drain port. Use an adjustable wrench to secure the
drain port. An optional condensate pump kit (4028614) may be installed if a lift is required to dispose of the
condensate. To order call 1-800-533-7533.

When installing the drain hose make sure the feet are extended such that the dehumidifier is 2 1/2” off the
ground. Then coil the drain hose under itself or position a spacer to lift the hose 1” off the ground after the
hose has touched the ground. This procedure will create a trap that ensures your unit drains correctly. See
the diagram below for further visual clarification.

5. Ducting

5.1 Supply Duct Kit (P/N 4028607)

A factory designed supply duct kit can be purchased to accept 10” ducting to both outlets of the Quest Dual.
Contact your dealer or call 1-800-533-7533 to order.

5.2 Return Duct Kit (P/N 4028610)

A factory designed return duct kit can be purchased to accept 12” ducting. Contact your dealer or call
1-800-533-7533 to order.

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