American Standard TWE050AD**E User Manual

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TWE-SVX03C-EN
5
General 
This manual covers installation of 
the TWE050, 060, 075, 090,100 and 
120A single circuit air handlers and 
TWE060, 075, 090, 100, 120, 155, 180, 
200 and 240B dual circuit air 
handlers. These air handler models 
incorporate a single slab coil 
assembly, improved application 
flexibility, servicing, maintenance 
accessibility and an improved 
accessory line. They are fully 
convertible, (vertical to horizontal 
discharge) without field removal or 
reorientation of the coil assembly. 
They are shipped ready for 
horizontal installation. 
The TWE090A300C, TWE090B300C, 
TWE120A300D, TWE120B300D 
models are shipped from the factory 
wired for 208-230V/3ph/60 Hz, but 
may be field converted for 460V/3ph/
60 Hz applications by changing 
voltage plug on the motor. For 
voltage change plug instructions, 
refer to 
.
All units (both single and dual 
circuit), have one drain pan that can 
be installed in any one of four 
positions. This allows for vertical or 
horizontal applications and right or 
left exit. 
Note:
The TWE060B, TWE090B, 
TWE100B, and TWE120B 
dual circuit air handlers have 
a split face coil. When they 
are installed in either 
position, the lower half of the 
coil is designated as “Circuit 
A” and should always wet 
first. 
The TWE155B, TWE180B, TWE200B 
dual circuit units have a mixed face 
coil.
Note:
Note: The TWE050, 060, 075, 
090, 100 and 120 air handlers 
have structural provisions to 
allow 180 degree rotation of 
discharge panel/blower 
assembly at installation. A 
reversible discharge wiring 
kit, BAYWRKT001A is 
available with instructions. 
Installation procedures should be 
performed in the sequence that they 
appear in this manual. Do not 
destroy or remove the manual from 
the unit.
The manual should remain weather-
protected with the unit until all 
installation procedures are 
complete.
Note:
It is not the intention of this 
manual to cover all possible 
variations in systems that 
may occur or to provide 
comprehensive information 
concerning every possible 
contingency that may be 
encountered during an 
installation. If additional 
information is required or if 
specific problems arise that 
are not fully discussed in this 
manual, contact your local 
sales office.
Note:
"Warnings" and "Cautions" 
appear at appropriate places 
in this manual. Your personal 
safety and the proper 
operation of this machine 
require that you follow them 
carefully. The Company 
assumes no liability for 
installations or servicing 
performed by unqualified 
personnel.
Installation Checklist
An "Installation Checklist" is 
provided at the end of the 
installation section of this manual. 
Use the checklist to verify that all 
necessary installation procedures 
have been completed. Do not use the 
checklist as a substitute for reading 
the information contained in the 
manual. Read the entire manual 
before beginning installation 
procedures.
Unit Inspection
Inspect material carefully for any 
shipping damage. If damaged, it 
must be reported to, and claims 
made against the transportation 
company. Compare the information 
that appears on the unit nameplate 
with ordering and submittal data to 
insure the proper unit was shipped. 
Available power supply must be 
compatible with electrical 
characteristics specified on 
component nameplates. Replace 
damaged parts with authorized parts 
only.
Inspection Checklist
To protect against loss due to 
damage incurred in transit, complete 
the following checklist upon receipt 
of the unit.
[ ] Inspect individual pieces of the 
shipment before accepting the unit. 
Check for obvious damage to the 
unit or packing material.
[ ] Inspect the unit for concealed 
damage before it is stored and as 
soon as possible after delivery. 
Concealed damage must be reported 
within 15 days. If concealed damage 
is discovered, stop unpacking the 
shipment. Do not remove damaged 
material from the receiving location. 
Take photos of the damage if 
possible. The owner must provide 
reasonable evidence that the 
damage did not occur after delivery.
[ ] Notify the carrier’s terminal of 
damage immediately by phone and 
by mail. Request an immediate joint 
inspection of the damage by the 
carrier and the consignee.
[ ] Notify the sales representative 
and arrange for repair. Do not repair 
the unit until the damage is 
inspected by the carrier’s 
representative.
General Information