Aprilaire 1850 Drain Installation, Leveling, Condensate PAN, Condensate Pump and Float Switch

Models: 1830 1850w 1850

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DRAIN INSTALLATION

The drain outlet on the dehumidifier can be hard piped using 3/4” nominal drain tubing or the provided fittings and 1/2” clear PVC tubing can be used to drain the dehumidifier.. Always maintain a constant downward slope from the dehumidifier to the drain and do not allow soft tubing to curl up which may result in air lock..

LEVELING

The feet can be adjusted to level the unit, and if required, to accommodate drain fittings and a secondary condensate pan.. Leveling is required to ensure proper drainage from the dehumidifier.. See Figure 9..

Figure 9 – Level the Unit

0.38" MIN

2.00" MAX

3/4” DRAIN

90-1885

CONDENSATE PAN, CONDENSATE PUMP AND FLOAT SWITCH

Always install the dehumidifier in a condensate pan when locating in or above a finished space.. Adhere to local codes regarding draining of the condensate pan.. If a condensate pump is needed, install it in the condensate pan as well..

Install a condensate overflow safety switch (i..e.. float switch) in the condensate pan, remove the factory installed jumper wire between the Float Switch terminals on the control and wire the float switch to the dehumidifier as shown in Figure 10.. Overflow safety switches on condensate pumps can be wired to the Float Switch terminals in a similar fashion..

Figure 10 – Float Switch Wiring

FLOAT DH DH Switch

NORMALLY CLOSED

FLOAT SWITCH

90-1857

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Aprilaire 1850w, 1830 Drain Installation, Leveling, Condensate PAN, Condensate Pump and Float Switch