Carrier 52MQAU12401AA, 52MQAU12301AA, 52MQAU09401AA, 52MQAU09301AA, 52MEAU12401AA Installation Guide

Installation Instructions

NOTE: Read and become fanfiliar with these instructions before beginning installation.

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be
hazardous due to system pressures and electrical components. Only

trained and qualified personnel should install or service
air-conditioning equipment. When working on air-conditioning

equipment, observe the precautions provided in literature, tags, and
labels attached to the unit.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.

Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in

literature and attached to the unit. Consult local building codes and
National Electrical Code (NEC), ANSI/NFPA 70, Canadian

Electrical Code CSA C22.1 and local codes and ordinances for
special requirements.

Recognize safety information. This is the safety-alert symbol/_.
When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury.
Understand these signal words: DANGER, WARNING, and

CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in

severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used

to identify unsafe practices which may result in nfinor personal
injury or product and property damage. NOTE is used to highlight

suggestions which will result in enhanced installation, reliability, or
operation.

ELECTRICAL SHOCK HAZARD AND/OR UNIT
OPERATION AND DAMAGE HAZARD

Failure to follow this warning could result in personal injury or
death and/or unit operation and damage.

- Follow the National Electrical Code (NEC), ANSI/NFPA
70, Canadian Electrical Code CSA C22.1 and local codes

and ordinances for special requirements.

- For personal safety, this unit MUST BE properly grounded.

- Protective devices (fuses or circuit breakers) acceptable
for unit installations are specified on the nameplate of

each unit.

- DO NOT use an extension cord with this unit.

- Alunfinum building wiring may present special problems.
Consult a qualified electrician for assistance.

When unit is in STOP position, there is still voltage to

electrical controls.

Subbase Hardwire Kit Assembly 1

Electrical junction box with factory-in- 1
stalled hardwire

Hardwire routing access cover 1
Wiring access cover 1
Attachment screws (black) 6

UNIT MODEL

52ME- U07- - -3
52MQ- U07- - -3

52ME- U09- - -3

52MQ- U09- - -3
52ME-U12- - -3

52MQ-U12- - -3
52ME-U15- - -3

52MQ-U15- - -3

52ME-U07- - -4
52MQ-U07- - -4

52ME- U09- - -4
52MQ-U09- - -4 M-SUBBASE

52ME-U12- - -4 -HW-20A

52MQ-U12- - -4 M-SUBBASE
52ME-U15- - -4 -HW-30A

52MQ-U15- - -4

Using 30A on these units could result in damage to your unit.

Disconnect power to unit before wiring Subbase Hardwire Kit
by removing branch circuit fuses or turning circuit breakers

off at panel.

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.
Use care when cutting support rods in filters, This may result in
flying debris and sharp rod ends.
Always wear safety goggles and appropriate protective
clothing.

Table 1--Package Contents

ITEM QUANTITY

Table 2--POWER CONNECTION CHART

CODE OF SUBBASE HARDWIRE KIT

ASSEMBLY

30A 20A 15A

230/208 VOLT

N/A*

M-SUBBASE M-SUBBASE

- HW-20A - HW- 15A

M-SUBBASE

-HW-30A

265 VOLT 265 VOLT 265 VOLT

N/A*

M-SUBBASE

-HW-15A

INTRODUCTION

These instructions cover the installation of the Subbase Hardwire
Accessory Kit. The kit consists of an electrical junction box, a

hardwire routing access cover, a wiring access cover, and 6
attachment screws.

GENERAL

The Subbase Hardwire Accessory Kit can be field installed to
convert a non-electrical subbase to an electrical hardwired subbase

for packaged ternfinal air conditioner (PTAC) units. See Fig. 1.
This kit can be used for both 208/230-v and 265-v applications at
15, 20 and 30 amps.

ELECTRICAL

JUNCTION BOX

Step 6 --Connect power to hardwire wires using field-supplied

wire nuts. See Fig. 5 for wiring.

Step 7 --Attach wiring access cover with two (2) black screws

(provided).

Step 8 --Attach subbase to wall sleeve. Subbase has side tabs for

mounting the subbase to the sleeve. Be sure hole on side tab is
lined up with pre-drilled locator hole on side of sleeve. Once

holes are aligned, attach subbase to sleeve with one (1) black screw
(provided) on each side. Do not over-tighten. See Fig. 3.

I IMPORTANT: Be sure PTAC unit is installed in wall I

sleeve before proceeding.

ACCESSCOVE

ACCEssW' ' ° :.1

COVER ¢_¢k, SCREWS (6)

A09027

Fig. 1 - Subbase Hardwire Accessory Kit

INSTALLATION

Fig. 3 - Hardwire Subbase Assembly Attached to Wall Sleeve

Step 9 --Remove front panel. See Fig. 4.

I

I

ATTACHMENTSCREW

A09030

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal iniury or
death,

Disconnect all power to unit to avoid possible electrical shock
during installation,

Building power source wiring can enter subbase through any
conduit knockout hole in bottom of subbase or through the

knockouts in the electrical junction box walls.
All wiring must comply with National Electrical Code (NEC),

ANSI/NFPA 70, Canadian Electrical Code CSA C22.1 and
local electrical codes and ordinances.

NOTE: Subbase nmst be removed from wall sleeve prior to
installation of hardwire kit.

Step 1 --Disconnect all power to unit.
Step 2 --Remove the half circle conduit knockout from the

hardwire routing access cover (see Fig. 2). This will provide
additional space to route conduit from subbase to unit.

Step 3 --Route conduit out through the rectangular conduit notch
located on top front of the subbase. See Fig. 2.

MOUNTING

SiDE
TAB

/

A07064

Pull out at the bottom to release it from the tabs (1). Then lift up
(2).

Fig. 4 - Removing Front Panel

Step 10 --Remove junction box. See Fig. 5.

a. Remove junction box cover by removing three screws

from front (save these for later).

b. Remove junction box by taking out top, rear, and side

screws (save these for later).

BOLT

A09029

Fig. 2 - Subbase Hardwire Assembly

Step 4 --Attach hardwire routing access cover with two (2) black
screws (provided).

Step 5 --Bring power into the subbase electrical junction box
using one of the knockouts for conduit connections. See Fig. 3.

'\\

Junction box cover ",,,Junction b ,\

A07058