Service manual

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Vertical Stack

Rev.: 11/09/12

ClimateMaster Water-Source Heat Pumps

Step 3: Attach to the Chassis. Slide the chassis part

way into the cabinet. Match the WATER IN hose to the

WATER IN tube on the chassis and the WATER OUT hose

to the WATER OUT tube. Tighten the swivel connection

keeping the copper tube parallel to the sides of the

chassis, then tighten the hose to the copper making

sure the hose hangs straight without twisting or turning

(Figure 23).

Note: The rule of thumb for tightening the copper

union and the hose union is hand tight plus 1/4 turn.

Figure 23

This! Not This!

Check all connections for tightness including the ones

above the installed valves (valve union). The chassis

should slide into the cabinet without restriction (Figure 24).

Figure 24

Chassis and Hose Kit Installation

Install the Chassis as follows:

1. Verify that the shut-off/balancing valve in the return

line and the shut-off valve in the supply line are

closed.

2. Flush system following the procedure in Preparation

for Start-up Section of this manual.

3. When the system is clean and ﬂ ushed, open the unit

water valves and check piping for leaks.

4. A ﬂ exible electrical cable terminating in quick-

connect plugs is provided in chassis.

5. Complete electrical connections between cabinet

and chassis by mating the quick-connect plugs on

the chassis cable to the plugs located in the bottom

surface of the blower deck, directly under the

control box.

6. Install the air ﬁ lter in the chassis by inserting the

bottom edge of the ﬁ lter into the bottom ﬁ lter

bracket. Push ﬁ lter down until the top can be

pushed into place, then latch the ﬁ lter in place with

the two top latches.

 WARNING! 

WARNING! Under no circumstances should any part of the

hose itself be gripped or twisted by hand, pliers, channel

locks or any other tool. Leakage or bursting may occur!

Always use a back-up wrench when tightening the hose.