Carrier 50TJ016 Installation Instructions

PACKAGE CONTENTS

ITEM
Temperature Switch
(46.1 C [115 F])
20-in., 16 gage wire
No. 6B, 3 ⁄ Lg screw
4
NOTE: The temperature make point for this switch is 40.6 C (105 F),
and the break point is 46.1 C (115 F).

SAFETY CONSIDERATIONS

Installation, start-up, and servicing of this equipment can
be hazardous due to system pressures, electrical compo-
nents, moving parts, and equipment location.
Only trained, qualified installers and service mechanics
should install, start-up, and service this equipment. Un-
trained personnel can perform such basic maintenance func-
tions as cleaning coils or replacing air filters. All other op-
erations should be performed by trained service personnel
only.
When working on equipment, observe precautions in lit-
erature; tags, stickers, and labels attached to equipment; and
any other safety precautions that apply. Follow all safety codes,
and wear safety glasses and work gloves. Use care in han-
dling, rigging, and setting bulky equipment.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could result in personal injury.

GENERAL

This package is intended for use on 50TJ016911 units to
allow operation at up to 51.7 C (125 F) outdoor ambient tem-
peratures. This accessory may also be used on other TJ units
with 06DF electric unloaders.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1 Catalog No. 015-078
Tab 1a 1b

Installation Instructions

Part No. 50TJ900061
QTY PART NO.
1 HH18HA115
1 —
2 —
Printed in U.S.A.
Accessory High-Ambient Kit
The higher outdoor ambient operation is accomplished by
unloading the compressor. This effectively lowers the cur-
rent load and head pressure of the compressor and prevents
nuisance tripping of the circuit breaker or high-pressure switch.
There is an associated loss of cooling capacity when us-
ing this kit. The capacity loss is approximately 20 to 25%
depending on indoor wet bulb operating conditions. Refer to
50 Hz Product Data literature for cooling capacity table with
accessory high-ambient kit.
The compressor is unloaded by breaking the Y2 connec-
tion from the conditioned space thermostat. A bi-metal,
temperature-actuated switch set to open at 46.1 C (115 F) is
installed in the control box and senses outdoor ambient. At
46.1 C (115 F) the temperature switch opens, the Y2 con-
nection is broken, and the compressor unloads.

BEFORE INSTALLING

Inspect the contents of this accessory package before in-
stalling. File a claim with the shipper if contents are dam-
aged or parts are missing.
INSTALLATION
1. Turn off power to unit.
2. Open control box and check that no power is present at
unit terminal block with voltage meter.
3. With 2 screws, install temperature switch in bottom of
control box as shown in Fig. 1.
4. Disconnect pink wire from TB2 terminal Y2 and connect
it to one terminal of the temperature switch. Refer to
Fig. 2.
5. Connect pink wire (supplied with kit) from other termi-
nal of temperature switch to TB2 terminal Y2.
6. Replace panels and turn on power to unit.
Form 50TJ-C5SI Pg 1
50TJ016
50 Hz
7-94 Replaces: New