Aquacal H/AT100R, H/AT120R owner manual Continued, Internal Winterizing Drain

Winterizing a Heat Pump Equipped with an Internal Drain

(Continued)

On the side

On the side

On the side Figure 1

Drain Plug

Figure 2

Internal Winterizing Drain

Winterizing a Heat Pump Equipped with an External Drain

(Per Figure-3, on page following)

1.Disconnect all electrical power to the heater; turn OFF circulating pump.

2.At the two (2) connection unions, disconnect the plumbing to the heater (removal is counterclockwise).

3.Locate the drain plug at lower, right-hand, front corner of heater. See Figure-3.

4.Using a 5/8", box-end wrench, remove the drain plug (removal is counterclockwise).

5.Permit all of the water to drain out of the condenser and then replace the plug: thread the plug in clockwise until just snug, then apply an additional 1/8 turn.

6.To prevent insects and vermin from entering the plumbing during the winterized period, partially reconnect the two (2) plumbing connection unions: couple each union one or two threads; this will permit condensation to drain, but will prevent most insects and animals from entering the plumbing circuit.

7.Next Season: To ready the heat pump for use, simply retighten plumbing connection unions. Hand-tight is generally sufficient.

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