Unit Disassembly, Tools Needed, Remove Front Panel

52 PQ A 3 12 3 0 1 AA

Series Designation

PTAC (Packaged Terminal Air Conditioner)

CE – Cooling with Electric Heat CQ – Heat Pump with Electric Heat PC – Cooling Only

PE – Cooling with Electric Heat PQ – Heat Pump with Electric Heat

Latest Revision

A – Z

Electric Heater Size

0– No Heating (Cooling Only Model)

2– 2.3 kW

3– 3.4 kW

5– 5.0 kW

Cooling Capacity (nominal)

07 – 7,000 Btuh

09 – 9,000 Btuh

12– 12,000 Btuh

15– 15,000 Btuh

Chassis Options

Blank or AA – Standard

CP – Corrosion Protection RC – Wall Thermostat Control

RP – Wall Thermostat Control with Corrosion Protection

Packaging

1 – Domestic

Non-Performance

Changes 0-9

Electrical Data

3– 230/208-v, 60 Hz

4– 265-v, 60 Hz

FIGURE 2 — MODEL NUMBER NOMENCLATURE

UNIT DISASSEMBLY

This section includes common procedures for disas- sembly and re-assembly of unit.

IMPORTANT: Follow manufacturer’s instruc- tions when disassembling and re-assembling a unit for cleaning, maintenance, or part replace- ment. When disassembling wiring, it is strongly recommended that numbered stickers be attached to identify leads and terminals to aid in the re-assembly process. Always review safety procedures prior to the start of a job.

Prior to servicing electrical equipment, discon- nect all power to avoid electric shock! Tag all dis- connects. Never alter cord or plug and do not use extension cords.

TOOLS NEEDED

The following field-supplied items are recommended for general disassembly of the unit:

•Flat head screw driver

•5/16-in. nut driver

•Safety glasses

•Needle nose pliers

REMOVE FRONT PANEL

NOTE: Before removing front panel, remove 2 locking screws (if installed) located behind the filter handles.

See Figure 3. If a lateral duct accessory is installed, the plenum must be removed before removing the front panel. Refer to Remove Lateral Duct Extension section for removal instructions.

1.Grasp the front panel firmly at the center of the top and bottom of the panel.

2.Pull the panel upward at the bottom and forward at the top to release magnetic latches and partition hooks. See Figure 4.

DISCONNECT POWER FOR

CORD-CONNECTED UNIT

1.Turn selector switch to OFF position.

2.Open the disconnect switch at main power supply. Use proper Lockout and Tag procedures.

3.Unplug the unit service cord.

DISCONNECT POWER FOR PERMANENTLY CONNECTED (HARDWIRED) UNITS

1.Turn selector switch to OFF position.

2.Open the disconnect switch at main power supply. Use proper Lockout and Tag procedures.

3.Remove screw from access cover and remove access cover.

4.Pull out the plug assembly and disconnect. See Figure 5.