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Installation Instructions

50HS-900---006

50LQ-900---001

NOTE: Read all instructions before beginning this installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment

can be hazardous due to system pressures and electrical com-

ponents. Only trained and qualiﬁed service personnel should

install, repair, or service air-conditioning equipment.

When working on air-conditioning equipment, observe pre-

cautions in the literature, tags, and labels attached to the unit,

and other safety precautions that may apply.

Before performing service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

can cause personal injury or death. TAG DISCON-

NECT SWITCH WITH A SUITABLE WARNING

LABEL.

INTRODUCTION

Accessory outdoor thermostats provide staged control of

multi-stage accessory electric heaters. Each accessory out-

door thermostat energizes a particular stage of heat (in ad-

dition to the stages provided by the indoor thermostat) in

response to dropping ambient temperature. See Table 1 for

accessory outdoor thermostat kit contents.

The accessory supplemental heat relay for 50QQ,YX heat

pumps is required only when 2 outdoor thermostats are used

with 3-stage heaters. It is automatically energized by the manu-

ally operated supplemental heat switch in the indoor ther-

mostat subbase. The thermostat locks out the compressor and

the relay bypasses one outdoor thermostat for electric heater

operation during heat pump shutdown, when appropriate. When

one outdoor thermostat is used, a supplemental heat relay is

not required. The supplemental heat switch in the indoor ther-

mostat subbase bypasses outdoor thermostat, locks out the

compressor, and activates electric heater.

Mount supplemental heat relay in low-voltage section of

control box with sheet metal screw provided.

The 50HS, 50HX, 50SS, and 50SX units have single-

stage electric heaters. Only one accessory outdoor thermo-

stat and no supplemental heat relays are required.

Table 1 — Accessory Outdoor Thermostat

Kit Contents

ITEM ITEM PART NO. QTY

Outdoor Thermostat HH22QA040 1

Thermostat Setting Label 50MQ501072 1

2 in. Flex. Grommet Strip 50LQ500282 1

Phillips Head Screws

(no. 8 screw,

⁄

in.)

AL56AU165 2

Wire Ties HY76TB130 2

Red Wire 48 in., 16 gage 1

Blue Wire 48 in., 16 gage 1

INSTALLATION

1. Mount Thermostat:

Models 50EE, 50QQ, and 50YX:

Mount outdoor thermostat(s) on unit center post with screws

provided (see Fig. 1).

Models 50NE and 50NQ:

Mount outdoor thermostat(s) on bottom panel of control

box with screws provided (see Fig. 1). Insert adjusting

shaft through holes provided in the bottom of the control

panel.

Model 50HS, 50HX, 50SS, and 50SX:

Mount outdoor thermostat in low-voltage splice box with

screws provided. (See Fig. 1). Insert adjusting shaft through

holes provided in the bottom of the control panel.

THERMOSTAT

CAPILLARY

CONDENSATE

DRAIN

CENTER

POST

OUTDOOR

THERMOSTAT(S)

UNITS 50EE, 50QQ, AND 50YX

UNITS 50NE AND 50NQ

(TYPICAL 50NE UNIT SHOWN)

Fig. 1 — Mounting Outdoor Thermostat

50EE, 50HS, 50HX, 50NE,

50NQ, 50QQ, 50SS, 50SX, 50YX

Accessory Outdoor Thermostat

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations.

Book 1144

Tab 1b5a5a6b

PC 111 Catalog No. 535-047 Printed in U.S.A. Form 50HS-4SI Pg 1 6-94 Replaces: 50N,Q,Y-2SI

1 2 3 4

Indice de contenidos

Pagina 1 - Installation Instructions

Installation Instructions50HS-900---00650LQ-900---001NOTE: Read all instructions before beginning this installation.SAFETY CONSIDERATIONSInstallation

Pagina 2 - UNITS 50NE AND 50NQ

2. Attach Thermostat Setting Label:Models 50EE, 50HS, 50HX, 50QQ, 50SS, 50SX, and 50YX:Attach label to sheet metal over thermostat adjusting shaft(see

Pagina 3 - Fig. 4 — Heat Pump Wiring

Fig. 3 — Attaching Capillary to Condensate Drain50HS AND 50HX UNITS(SINGLE-STAGE HEATERS)50NQ, 50QQ, AND 50YX(2-STAGE HEATERS)50HS AND 50HX UNITS(2-ST

Pagina 4 - (2-STAGE HEATERS)

Cooling units with single-stage indoor thermostat and multi-stageheating for 3-stage heaters.Cooling units with 2-stage indoor thermostat and 3 stages

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Carrier 50NQ Manual de usuario

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Indice de contenidos

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