Supplementary
Electric Heaters
for Air Handler Installations
INSTALLER'S
GUIDE
Model:
BAYHTR1405A
BAYHTR1405
BAYHTR1408A
BAYHTR1408
BAYHTR1410A
BAYHTR1410
BAYHTR3410
BAYHTR1415A
BAYHTR3415
BAYHTR1419B
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
© American Standard Inc. 1998
Since the manufacturer has a policy of continuous
product improvement, it reserves the right to change
specifications and design without notice.
A. GENERAL
These air handlers and heaters are designed so that all
wiring between the heater and air handler is accom-
plished via mating polarized plugs, power for the air
handler is provided from heater circuit 1, so that only
one conduit (power source) is needed to provide power to
the unit on single circuit applications.
1. Check the applicable tables to insure that the Heater
selected is approved for use with the air handler in
which it is to be applied, in the cofiguration in which
it is to be installed.
2. Check the components received for damage. Report
any defects or shortages to the transportation com-
pany immediately.
3. Be sure power supply agrees with listing shown on
heater nameplate.
B. INSTALLATION With
TWG Air Handlers
1. Remove the blower access panel from the front of the
air handler unit.
2. Unplug the female polarized plug from the air handler
electrical junction box and remove the junction box,
male polarized plug, power wiring and discard .
3. Remove the cover from the heater compartment of the
air handler and discard.
4. Remove the cover from the heater field wiring and
control compartment box. An adapter plate is pro-
vided for heaters which are used with air han-
dlers that are 21.5" wide or wider. When re-
quired, attach the adapter plate to the back of the
heater on the side opposite the knockouts using
2 screws.
ALL phases of this installation must comply with
NATIONAL, STATE AND LOCAL CODES
5. Remove the appropriate knockouts in the heater field
wiring compartment. See Figure 1 on page 2. Remove
the appropriate knockouts in the air handler for
making electrical connections to the heater. The holes
in the air handler must align with the holes in the
heater field wiring compartment.
6. Insert the heater assembly into the heater cavity of the
air handler so that the field wiring holes in the air
handler and the heater will align. Secure the heater
compartment to the air handler with the four screws
removed from the hardware envelope.
IMPORTANT: Conduit must attach directly to the heater
control box.
7. Make all wiring connections per applicable field wiring
diagrams in these instructions. All instructions must
conform to national and local electrical codes.
8. Connect the female polarized plug (disconnected in
item 2) from the air handler control box to the male
polarized plug on the bottom of the heater control box
9. Refer to the heater airflow chart on the air handler
rating nameplate for the appropriate minimum blower
speed tap selection to be used with an approved heater
installed.
10. For heaters with self contained circuit breakers, an
opening in the blower access panel is provided so that
the breakers may be operated without removal of the
blower access panel. Remove the metal cover from the
circuit breaker opening in the air handler access panel
and discard, cut out the fiberglass insulation only in the
areas where the circuit breakers will extend through
the opening. Install the plastic "AirTite" circuit breaker
cover in the front panel opening with the two screws
provided.
11. Replace all panels removed during the heater instal-
lation.
18-HB13D5-1
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
Library
Product Section
Product
Model
Literature Type
Sequence
Date
File No.
Supercedes
Service Literature
Unitary
Unitary Accessories
TVF
Electric, Steam, Hot Water Coils
39
September 1998
SU-UN-ACC-EHTR-IN-39 9/98
New
EHTR-IN-39
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