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4 | UNIT PREPARATION DDC Field Installation Guide

DDC Field Installation Guide8 733 904 851 Revised 05-13 Subject to change without prior notice

UNIT PREPARATION

1. Remove power from the unit.

2. Locate the front side of the Water-to-Air Heat

Pump per Figure #3.

3. Remove front-side panel to expose electrical

box.

4. Locate the Unit Protection Module (UPM) in

the electrical box.

5. Verify part numbers as shown in Figure #1 & #2;

Single Compressor UPM-I: 8 733 800 259 or

Dual Compressor UPM-II: 8 733 800 260.

6. If UPM board(s) part numbers do not match

either of the two (2) numbers listed above,

then new UPM Board Kits (Table 2) will need to

be ordered.

Figure # 1

[1] UPM Part Number

[2] Freeze Sensor Contacts

[3] Alarm Contacts

Figure # 2

[1] UPM Part Number

[2] Freeze Sensor Contacts

[3] Alarm Contacts

MOUNTING THE CONTROLLER

1. The controller is mounted externally to the

right-side panel of Heat Pump. Locations are

shown on a typical EC360 per Figure #3.

2. Locate the controller on the right side panel

and line up the harness with the top access

knockout as shown in Figure #4.

3. Mark and drill holes to use for mounting the

controller as indicated in Figure #3.

4. If necessary, assemble harness onto controller

per the wiring diagram in Figure #6.

5. Use the supplied mounting screws to attach

the controller to the right side of the unit.

6. Route the terminated ends of the harness

through the top access knockout port (Figure

#4) and into the adjacent electrical box.

Abide by all Electrical Safety and Lockout

Procedures in accordance with local, state

and federal regulations.

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