Trane 4TWR5018E Installer's Manual

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service informa-
tion pack upon completion of work.
These instructions do not cover all variations in sys-
tems nor provide for every possible contingency to be
met in connection with installation. All phases of this
installation must comply with NATIONAL, STATE AND
LOCAL CODES. Should further information be desired or
should particular problems arise which are not covered suf-
ficiently for the purchaser's purposes, the matter should be
referred to your installing dealer or local distributor.
A. GenerAl
WArnInG
!
This information is intended for use by individuals pos ses­
s ing adequate backgrounds of electrical and mechanical
experience. Any attempt to repair a central air condition ing
product may result in personal injury and or property dam­
age. The manufacturer or seller cannot be respon sible for
the interpretation of this information, nor can it assume any
liability in connection with its use.
NOTICE:
Trane has always recommended installing Trane approved
matched indoor and outdoor systems.
The benefits of installing approved matched systems are
maximum efficiency, optimum performance and best overall
system reliability.
WArnInG
!
These units use r­410A refrigerant which operates at 50 to
70% higher pressures than r­22. Use only r­410A approved
service equipment. refrigerant cylinders are painted a rose
color to indicate the type of refrigerant and may contain a dip
tube to allow for charging of liquid refrigerant into the sys­
tem. All r­410A systems use a POe oil that readily absorbs
moisture from the atmosphere. To limit this hygroscopic ac­
tion, the system should remain sealed whenever possible. If
a system has been open to the atmosphere for more than 4
hours, the compressor oil must be replaced. never break a
vacuum with air and always change the driers when opening
the system for component replacement. For specific han­
dling concerns with r­410A and POe oil, reference retrofit
Bulletin SSC­APG011­en.
Check for transportation damage after unit is uncrated. Report
promptly, to the carrier, any damage found to the unit.
To determine the electrical power requirements of the unit, re-
fer to the nameplate of the unit. The electrical power available
must agree with that listed on the nameplate.
Installer's Guide
Condensing Units
4TWr5
UnIT COnTAInS r­410A reFrIGerAnT!
R-410A OPERATING PRESSURE EXCEEDS THE
LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS
REQUIRED. FAILURE TO USE PROPER SERVICE
TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR
PERSONAL INJURY.
1
B. lOCATIOn And PrePArATIOn
OF The UnIT
Cold Climate Considerations
The Heat Pump has been designed and manufactured to with-
stand and operate in severe winter conditions. However, there
are precautionary steps which should be taken at the time of
installation which will help assure the efficient operation of the
unit. It is recommended that these precautions be taken
for units being installed in areas where snow accumula-
tion and prolonged below freezing temperatures occur.
1. Units should be elevated three (3) to twelve (12) inches
above the pad or roof top, depending on local weather. This
additional height will allow drainage of snow and ice
(melted during defrost cycle) prior to its refreezing. This
reduces the chance of ice build-up around the unit which
occurs when unit is not elevated. Ensure that drain
holes in unit base pan are not obstructed prevent-
ing draining of defrost water.
CAUTIOn
!
ServICe
USE ONLY R-410A REFRIGERANT AND
APPROVED POE COMPRESSOR OIL.
Single Unit Installation
1' Behind
18­BC76d1­2
5' Above
Unrestricted
3'