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.
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
Installer’s Guide
© 2008 Trane
A. GENERAL INFORMATION
▲
WARNING
!
THIS INFORMATION IS FOR USE BY INDIVIDUALS
HAVING ADEQUATE BACKGROUNDS OF ELECTRICAL
AND MECHANI CAL EXPERIENCE. ANY ATTEMPT TO
REPAIR A CENTRAL AIR CONDITIONING PROD-
UCT MAY RESULT IN PERSONAL INJURY AND/OR
PROPERTY DAMAGE. THE MANUFACTURER OR
SELLER CANNOT BE RESPONSIBLE FOR THE IN-
TERPRETATION OF THIS INFORMATION, NOR CAN
IT ASSUME ANY LIABILITY IN CONNECTION WITH
ITS USE.
▲
CAUTION
!
To prevent shortening its service life, the air
handler should not be used during the finishing
phases of construction. The low return air tem-
peratures can lead to the formation of conden-
sate. Condensate in the presence of chlorides and
fluorides from paint, varnish, stains, adhesives,
cleaning compounds, and cement creates a corro-
sive condition which may cause rapid deteriora-
tion of the cabinet and internal components.
These instructions do not cover all variations in sys-
tems or provide for every possible contingency. Should
further information be desired or particular problems
arise which are not covered sufficiently by this manu-
al, contact your local distributor or the manufacturer
as listed on the air handler nameplate.
These Air Handlers are vertical upflow and horizontal
left configuration only. Refer to Section B beginning on
page 2 for additional information.
INSPECTION
Check carefully for any shipping damage. This must be
reported to and claims made against the transporta-
tion company immediately. Check to be sure all major
components are in the unit. Any missing parts should
be reported to your supplier at once, and replaced with
authorized parts only.
3-1/2 – 4 Ton Air Handlers
Upflow / Horizontal Left
2/4TGB3F42A 2/4TGB3F48A
CONTENTS
General Information ............................................... 1
Installation Limitations & Recommendations ............................. 1
Unit Installation ...................................................... 2
Vertical Upflow .......................................................................... 2
Horizontal Left ........................................................................... 3
Refrigerant Piping .................................................. 3
Condensate Drain Piping ...................................... 4
Electrical - Wiring ................................................... 5
Hook Up Diagrams .................................................. 5
Outline Drawings .................................................... 7
Checkout Procedures ............................................. 8
INSTALLATION LIMITATIONS & RECOMMENDATIONS
The general location of the air handler is normally se-
lected by the architect, contractor and/or home owner
for the most effective application and satisfaction.
These air handlers are suitable for installation in a
closet, alcove or utility room with free, non-ducted, air
return, using the area space as a return air plenum.
With ducted supply air, if the minimum clearances to
combustible materials and service access are observed,
the above installations are suitable.
NOTE: Condensation may occur on the
surface of the air handler when installed in
an unconditioned location. When units are
installed in unconditioned spaces, verify
that all electrical and refrigerant line pen-
etrations on the air handler are sealed com-
pletely.
This area may also be used for other purposes, includ-
ing an electric hot water heater -
but in no case shall
a fossil fuel device be installed and/or operated
in the same closet, alcove or utility room.
18-GD07D1-5
