Trane BAYEACC25BK1B Assembly instructions

25 kW Supplementary
Electric Heater
for Air Handler Installations
INSTALLER'S
GUIDE
IMPORTANT—This Document is customer property and is to remain with this unit. Please return to service information
pack upon completion of work.
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
18-GJ22D1-1E-EN
Models:
BAYEACC25BK1B
Table of Contents
Section 1. Safety Information ......................................................................................................................1
Section 2. General Information.................................................................................................................... 2
Section 3. Heater Assembly Labeled...........................................................................................................2
Section 4. Adjust Heater................................................................................................................................3
Section 5. Install Heater.................................................................................................................................5
Section 6. Tables......................................................................................................................................... 11
Section7.SequenceofOperation................................................................................................................12
Section 1. Safety Information
ssWARNING
SAFETY HAZARD! This information is intended
for use by individuals possessing adequate back-
grounds of electrical and mechanical experience. Any
attempt to repair a central air conditioning product
may result in personal injury and/or property damage.
The manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it as-
sume any liability in connection with its use.
LIVE ELECTRICAL COMPONENTS! During
installation, testing, servicing, and troubleshooting
of this product, it may be necessary to work with live
electrical components. Failure to follow all electri-
cal safety precautions when exposed to live electrical
components could result in death or serious injury.
ssWARNING
SAFETY HAZARD! Sharp Edge Hazard. Be careful
of sharp edges on equipment or any cuts made on
sheet metal while installing or servicing. Personal
injury may result.
CAUTION
HAZARDOUS VOLTAGE! Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure
the power can not be inadvertently energized. Failure
to disconnect power before servicing could result in
death or serious injury.
ssWARNING

Page 2
INSTALLER'S GUIDE
This electric heater accessory is designed to provide
power directly to the air handler from the accessory
heater's power supply, eliminating the need for addi-
tional circuits. The power and control wiring each use
a single wire harness to connect the heater and the air
handler.
1. Check the heater nameplate to confirm that the selected
heater is approved for use with the air handler.
2. Check the components received for damage. Report any
defects or shortages to the transportation company im-
mediately.
3. Be sure the power supply matches the listing shown on
the heater nameplate.
Section 2. General Information
Section 3. Heater Assembly Labeled
Heater Baffle
Retainer Tabs and screws
- in document pack
Heater Rack
Breaker Bracket
Circuit Breakers
Electric Heat
Control Platform
Nameplate
Edge Guard
- in document pack
Base Plate
Cyclic Thermal
Limit Switch
Heater Element
Terminations
Width Adjustment Brackets
Breaker Bracket Cover
Electric Heat Control - 24V
Non-cyclic
Thermal Limit Switch
Non-cyclic
Thermal Limit Switch

Page 3
INSTALLER'S GUIDE
Section 4. Adjust Heater
STEP 1 - Remove control box
The heater and control box are connected when they
are shipped. Before installation is started, the con-
trol box must be disconnected from the heater.
1. Disconnect the three 4-pin plugs between the
breakers and the heater. (Shown removed in il-
lustration.)
2. Disconnect the ground on the 3-pin plug that is at
the right front of the heater and connected with a
ring terminal to the heater base plate.
3. Disconnect the two ground wires from the lug on
the heater base plate.
Note: It is recommended that the ducting be
attached and sealed before installing the heater.
Ring terminal
ground
4-pin plugs
STEP 2 - Adjustment brackets
Two Width Adjustment Brackets are located at the
back of the heater assembly. The heater comes fac-
tory sized for the C cabinet. No modifications to the
Width Adjustment Brackets are required.
Width Adjustment Brackets
(two per unit)
Ground
Lug
20.5

Page 4
INSTALLER'S GUIDE
STEP 4 - (Optional) Rotate Circuit Breakers.
The need to reorient the Circuit Breaker Assembly
depends upon the orientation of your application
and which of the high voltage electrical conduit entry
points you use for high voltage wiring.
SAFETY HAZARD! Sharp Edge Hazard. Be careful
of sharp edges on equipment or any cuts made on
sheet metal while installing or servicing. Personal
injury may result.
CAUTION
1. Pull out the tab on the back side of the breaker using
a long screwdriver.
2. Remove the circuit breaker from the control box and
rotate the circuit breakers 180 °.
Important: For air handler units installed in the
horizontal right position, the circuit breakers on
the heater must be rotated in order to comply with
National Electric Code (NEC Section 240.81). The
NEC requires that circuit breakers operated verti-
cally must be oriented so that the "on" position of the
breaker is upward.
Field
Connections
ON
Circuit
Breaker Control
Box
Breaker
Tab
Front
Pull
Pull
Back
Factory
Connections
Circuit Breaker Assembly
STEP 3 - Attach Retainer Tabs.
1. Add the Retainer tabs using the screws provided (both
tabs and screws are located in the documentation
packet).
Leave the screws slightly loose so that the tab can slide
to the left or right as needed. The tab will be used later to
engage in a slot within the air handler cabinet.
Note: The retainer tabs must be attached to the
heater base plate. Leave the screws slightly loose
so they can be slid to the left or right as needed.
2. The edge guard is located in the document pack. Install
the edge guard on the front of the heater flange as
shown.
Rounded
end inserts
into cabinet

Page 5
INSTALLER'S GUIDE
BLACK
RED
GREEN - GROUND
WIRES CIRCLE
BACK AND GO
THROUGH
SCREW MOUNTED
WIRE TIE
STEP 2 - Disconnect & Dispose of Pigtail Harness.
1. Remove the screw mounted wire tie that is holding the
pigtail harness and case ground wire to the cabinet.
Remove the wire tie from the two green ground wires.
2. Unplug and dispose of pigtail harness.
Section 5. Install Heater
STEP 1 - Remove Heater Compartment Panel.
Heater
Compartment
Panel
3. Place the circuit breakers back into the control box.
The tabs on the breakers are spring loaded and will
snap back to their locked position once the breakers
are properly seated.
Field
Connections
ON
Circuit
Breaker Control
Box
Factory
Connections
Circuit Breaker Assembly - Rotated
Note: If there is not a conduit plug in the top cross-
member, drill a 2" diameter hole in the top panel to
feed the wires through. Use the conduit locating
target for the location of the 2" diameter hole.

Page 6
INSTALLER'S GUIDE
STEP 3 - Insert heater assembly into heater compart-
ment.
1. Move factory wiring out of the way and into the grooves
provided in cabinet.
2. Slide heater into heater compartment of air handler.
STEP - 4Lock Retainer tabs.
Note: Retainer tabs are used to secure the heater
inside of the heater compartment.
1. Slide retainer tab into recess in air handler cabinet.
2. Tighten screws to hold tab securely.
3. Repeat actions to secure the other tab.
STEP 5 - Select a conduit entry point. See the
orientations on the following pages for entry point
selections.
1. Select the entry point on the control box cover you will
use to bring in your high voltage wiring.
2. Remove knockout from the entry point.
3. Remove the plug from the 1-1/2" hole in the cabinet.
4. After the ductwork is installed, secure the control box to
the top panel of the air handler.
Note: Use the low torque setting when attaching
the screws to the unit.
Retainer
Tab
Conduit Entry Points (4 total)

Page 7
INSTALLER'S GUIDE
Upflow - Route conduit, as shown.
Downflow - Route conduit, as shown.
Note: A minimum of 8" is required for installation and
servicing of the control box.
8" Min.

Page 8
INSTALLER'S GUIDE
Horizontal Left - Route conduit, as shown.
Horizontal Right - Route conduit, as shown.

Page 9
INSTALLER'S GUIDE
RED
FACTORY FIELD
BLK
BLK
BLK
GND
GND (2)
RED
RED
STEP 6 - Route conduit, if used, and wiring to the
entry point and connect.
1. Connect field supplied conduit to breaker box.
STEP 7 - Connect high voltage wiring
1. Connect high voltage field wiring.
2. Route the three 4-pin connectors, one 3-pin connector,
and two ground wires through the hole in the top panel.
3. Reconnect the ground wire coming from the 3-pin con-
nector to the heater base plate front using the screw
removed earlier. (See Section 4, Step 1 for illustration)
4. Reconnect the 3-pin plug on the heater to the 3-pin plug
in the air handler case.
5. Reconnect the two ground wires to the lug on the base
plate. See illustration in Step 8.
Note: Minimum terminal screw torque is 45 in-lbs.
STEP 8 - Plug Connections
1. Connect the three 4-pin connectors from the circuit
breakers to the three 4-pin connectors coming from the
heater. The connectors are labeled "Circuit1", "Circuit
2", and "Circuit 3". Line up the mating male and female
connectors and connect.
Note: One set of plugs has only two wires each.
2. Connect the case ground wire to the lug on the heater
base plate.
Case
ground
Lug

Page 10
INSTALLER'S GUIDE
STEP 9 - Connect low voltage wiring.
STEP 10 - Place Wiring Diagram.
1. Attach the wiring diagram, included in the documentation
packet, to the back of the heater compartment panel.
Close up with other wires not shown
STEP 11 - Replace Heater compartment panel on air
handler.
Resistor
Assembly
Low
Voltage
Harness Electric
Heat Control
Harness
Heater
Resistance
Harness
1. Connect the 4-pin low voltage harness to Electric Heat
Control as shown.
2. If installing in TAMX Air Handler models, connect the 2-pin
resistor ID assembly (tie wrapped to Electric Heat Controls
harness) into the 2-pin heater ID harness as shown.
3. All other Air Handler models, the 2-pin resistor ID assembly
is not used and should be left disconnected.

Page 11
INSTALLER'S GUIDE
Section 6. Tables
Table 6.1 BAYEA -- HEATER DATA
Heater Model No. Number of
Circuits
240 VOLT 208 VOLT
Capacity Heater Amps
per Circuit
Capacity Heater Amps
per Circuit
kW BTUH kW BTUH
BAYEACC25BK1 3 24.00 82000 40/40/20 18.00 61500 34.6/34.6/17.3
Important: The BAYEA* electric heat accessory may include up to a combination of three 60 amp circuit breakers to
provide an electrical disconnect for service personnel that is intended to help protect internal electrical components in
the event of a short circuit or ground fault. As designed, the circuit breakers supplied in the BAYEA* accessory DO NOT
provide overcurrent protection of the branch circuit. Therefore, the branch circuit(s) shall be sized and protected according
to the unit nameplate.
Table 6.2 MINIMUM HEATER AIRFLOW CFM - HEATER MATRIX
MODEL NO. BAYEACC25BK1
W/O HP / WITH HP
GAM5B0C48M41E TAP 4 / TAP 5
GAM5B0C60M51E TAP 4 / TAP 5 ①②
TAM4A0C48S41E TAP 2 ③/ TAP 3
TAM4A0C60S51E TAP 4 / TAP 5
TAM9A0C48V41D
TAMXA0C48V41D 1625 / 1813
TAM9A0C60V51D
TAMXA0C60V51D 1625 / 1813
TAMGB0C48V41D 1625 / 1813
TAMGB0C60V51D 1625 / 1813
SEE AIR HANDLER NAMEPLATE OR PRODUCT DATA FOR EXCEPTIONS
①If the air handler is applied in downflow or horizontal configurations, the airflow should not
exceed 2000 CFM. Airflow above 2000 CFM could result in water blow-off.
②Tap 5 can be used but only when the external static pressure is .6" or above.
③Not approved for 208V
NOTE: TAM9, TAMX and TAMGB are variable speed air handlers
ID HEAT TYPE ↔↕
EH* EH
ID HEAT TYPE ↔
HH EH
EH CFG #PH ↔↕
XX* XX
EHC AIRFLOW ↔↕
LOW* LOW
EHC AIRFLOW ↔↕
MED* LOW
EHC AIR
HI*
HT DLY PR ↔↕
HPPR X* • This configuration will provide a
an 08 or 011 coil if Hydronic is
with a “C” width TAM9 cabinet
Select heater size
- See EH menu (electric heater)
o Option 4 = Enhanced Mode
STEP 12 - For the TAM9 and TAMGB only, set the
heater size in the Configuration Menu.

Section 7. Heater Operation
7.1 GAM5B Heater Operation
Electric Heating
1. R-W contacts close on the comfort control sending
24VAC to the EHC to energize the heat relay.
2. R-G contacts close on comfort control sending
24VAC to the blower relay
3. Relay contacts 1 and 3 close
4. The blower will now run on the selected speed.
Speed is field selectable
5. Contacts 4 & 6 on the blower relay close providing
the interlock circuit to allow the electric heat relays
to operate
The comfort control must be setup to control R-G con-
tacts with a call for electric heat. This closes the interlock
circuit and allows the heat relay circuit to be energized.
Electric Heating
Note: The TAM9, TAMX / TAMG can use a
communicating or 24 volt comfort control to send a
heater request to the AFC/AHC.
1. When a request for electric heat is received,
the AFC/AHC will energize the on board 24 volt
relays per the amount of heat requested from the
thermostat and the size of the heater installed.
2. The AFC/AHC sends a command to the serial
communicating blower motor to run proper airflow
and close the blower interlock relay on the EHC.
7.3 TAM9, TAMX / TAMGB Heater Operation
7.2 TAM4 Heater Operation
Electric Heating
1. R-W contacts close on the comfort control sending
24VAC to the W terminal on the TDR. 24VAC is also
sent to EHC to energize the heat relay.
2. R-G contacts close on the comfort control sending
24VAC to the G terminal on the TDR. (The combination
of 24VAC on terminals W and G on the TDR will close
the high speed contacts of the TDR)
3. WJ contacts on the TDR close providing an interlock
circuit to allow the electric heat relays to operate.
The comfort control must be setup to control R-G contacts
with a call for electric heat. This closes the interlock circuit
and allows the heat relay circuit to be energized.
About Trane and American Standard Heating and Air Conditioning
Trane and American Standard create comfortable, energy efficient indoor environments for residential applications.
For more information, please visit www.trane.com or www.americanstandardair.com
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are
committed to using environmentally conscious print practices.
© 2020
18-GJ22D1-1E-EN 30 Oct 2020
Supersedes 18-GJ22D1-1D-EN (April 2020)