Carrier 50NQ- User Manual

Carrier 50NQ

Carrier 50NQ– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

1 Page 1
2 Page 2
3 Page 3
4 Page 4
Page: / 4

Table of Contents:

  • Page 2 – Fig. 2 — Attaching Thermostat Setting Label
  • Page 3 – Fig. 3 — Attaching Capillary to Condensate Drain; ODT — Outdoor Thermostat; Fig. 4 — Heat Pump Wiring
  • Page 4 – Fig. 5 — 50EE and 50NE Cooling Unit Wiring
Loading the manual

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,

3

⁄

8

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 1

1

4

4

Tab

1b 5a 5a 6b

PC 111

Catalog No. 535-047

Printed in U.S.A.

Form 50HS-4SI

Pg 1

6-94

Replaces: 50N,Q,Y-2SI

"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.

Other Manuals for Carrier 50NQ

Summary

Page 2 - Fig. 2 — Attaching Thermostat Setting Label

2. Attach Thermostat Setting Label: Models 50EE, 50HS, 50HX, 50QQ, 50SS, 50SX, and 50YX:Attach label to sheet metal over thermostat adjusting shaft(see Fig. 2).Models 50NE and 50NQ:Attach label to bottom panel of control box (see Fig. 2).NOTE: When attaching label, make sure that 40 F/4 Cmarkings co...

Page 3 - Fig. 3 — Attaching Capillary to Condensate Drain; ODT — Outdoor Thermostat; Fig. 4 — Heat Pump Wiring

Fig. 3 — Attaching Capillary to Condensate Drain 50HS AND 50HX UNITS (SINGLE-STAGE HEATERS) 50NQ, 50QQ, AND 50YX (2-STAGE HEATERS) 50HS AND 50HX UNITS (2-STAGE HEATERS) 50NQ, 50QQ, AND 50YX (3-STAGE HEATERS) LEGEND ODT — Outdoor Thermostat Factory WiringField WiringJunction Fig. 4 — Heat Pump Wiring...

Page 4 - Fig. 5 — 50EE and 50NE Cooling Unit Wiring

Cooling units with single-stage indoor thermostat and multi-stageheating for 3-stage heaters. Cooling units with 2-stage indoor thermostat and 3 stages of heatingfor 3-stage heaters. LEGEND ODT — Outdoor Thermostat Factory WiringField Wiring Fig. 5 — 50EE and 50NE Cooling Unit Wiring (2-STAGE HEATER...

Other Carrier Models