Trane BAYHTRS409, BAYHTRS318, BAYHTRS418, BAYHTRS427, BAYHTRS436 Installer's Manual

Installer’s Guide

Electric Heaters

6-10 Ton Packaged Cooling

November 2009

Model Number Used With

See ‘General Information’ section in this guide

ACC-SVN67D-EN

Warnings, Cautions and Notices

Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at

appropriate intervals throughout this manual. Warnings are provided to alert installing contractors
to potential hazards that could result in personal injury or death. Cautions are designed to alert
personnel to hazardous situations that could result in personal injury, while notices indicate a
situation that could result in equipment or property-damage-only accidents.\
Your personal safety and the proper operation of this machine depend upon the strict observance
of these precautions.

ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout

this literature. Read these carefully.

WARNING: Indicates a potentially hazardous situation which, if not avoided, could

result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, could

result in minor or moderate injury. It could also be used to alert against unsafe practices.

NOTICE: Indicates a situation that could result in equipment or property-damage-only

accidents.

Important
Environmental Concerns!

Scientific research has shown that certain man-made chemicals can affect the earth's naturally
occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the
identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine
and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all
refrigerants containing these compounds have the same potential impact to the environment.
Trane advocates the responsible handling of all refrigerants-including industry replacements for
CFCs such as HCFCs and HFCs.

Responsible Refrigerant Practices!

Trane believes that responsible refrigerant practices are important to the environment, our
customers, and the air conditioning industry. All technicians who handle refrigerants must be
certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these
service procedures. In addition, some states or municipalities may have additional requirements
that must also be adhered to for responsible management of refrigerants. Know the applicable
laws and follow them.

WARNING

Personal Protective Equipment (PPE) Required!

Installing/servicing this unit could result in exposure to electrical, mechanical and chemical
hazards.

• Before installing/servicing this unit, technicians MUST put on all Personal Protective
Equipment (PPE) recommended for the work being undertaken. ALWAYS refer to appropriate
MSDS sheets and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals, ALWAYS refer to the appropriate MSDS
sheets and OSHA guidelines for information on allowable personal exposure levels, proper
respiratory protection and handling recommendations.

• If there is a risk of arc or flash, technicians MUST put on all necessary Personal Protective
Equipment (PPE) in accordance with NFPA70E for arc/flash protection PRIOR to servicing the
unit.

Failure to follow recommendations could result in death or serious injury.

© 2009 Trane All rights reserved ACC-SVN67D-EN

Table of Contents

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 2. TCO-A replaced for Horizontal Duct Configuration . . . . . . . . . . . . . . . 8

Table 3. Air temperature rise (60 hz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 4. Unit wiring with electric heat (single point connection) - standard effi­ciency
Table 5. Unit wiring with electric heat - heat pump - (single point connection) ­standard efficiency
Table 6. Unit wiring with electric heat (single point connection) - high efficiency

- 6-10 tons

Table 7. Air temperature rise 380/415 Volt (50 hz) . . . . . . . . . . . . . . . . . . . . . 18

Table 8. Air temperature rise 380/415 Volt (50 hz) . . . . . . . . . . . . . . . . . . . . . 18

Table 9. Cooling only units with electric heater — single power source — 380/415
Volt (50hz)
Table 10. Heat pump units with electric heater — single power source — 380/415
Volt (50hz)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

ACC-SVN67D-EN 3

General Information

Ta b le 1 .

Model Number Used With

BAYHTRS309

BAYHTRS318

BAYHTRS327

BAYHTRS336

BAYHTRS409

BAYHTRS418

BAYHTRS436

BAYHTRSW09

BAYHTRSW18

BAYHTRSW27

BAYHTRSW36

BAYHTRT309

BAYHTRT318

BAYHTRT327

BAYHTRT336

BAYHTRT409

BAYHTRT418

BAYHTRT427 TSC092E4 TSC102E4 TSC102ED

BAYHTRT436 TSC120ED WSC120ED

BAYHTRT454

BAYHTRTW18

BAYHTRTW36

BAYHTRA318

BAYHTRA327 TSC120E3

BAYHTRA336 TSC120E3

BAYHTRA354 TSC120E3

BAYHTRA418 TSC120E4

BAYHTRA427 TSC120E4

BAYHTRA436 TSC120E4

BAYHTRA454 TSC120E4

BAYHTRAW18 TSC120EW

BAYHTRAW36 TSC120EW

BAYHTRAW54 TSC120EW

BAYHTRB318 WSC120E3

BAYHTRB327 WSC120E3

BAYHTRB336 WSC120E3

BAYHTRB354 WSC120E3

BAYHTRB418 WSC120E4

BAYHTRB427 WSC120E4

BAYHTRB436 WSC120E4

BAYHTRB454 WSC120E4

TSC072E3

TSC072E4

TSC072E4

TSC072EW

TSC092E3 TSC102E3

TSC092E4 TSC102E4

TSC120ED WSC120ED

TSC092EW TSC102EWBAYHTRTW27

TSC120E3

TSC072ED

WSC072ED

WSC090ED

TSC090EDBAYHTRS427

4 ACC-SVN67D-EN

Ta b le 1 .

BAYHTRBW18 WSC120EW

BAYHTRBW36 WSC120EW

BAYHTRBW54 WSC120EW

BAYHTRD309 THC092E3 THC102E3

BAYHTRD318 THC092E3 THC102E3 THC120E3

BAYHTRD327 THC092E3 THC102E3 THC120E3

BAYHTRD336 THC092E3 THC102E3 THC120E3

BAYHTRD354 THC120E3

BAYHTRD409 THC092E4 THC102E4

BAYHTRD418 THC092E4 THC102E4 THC120E4

BAYHTRD427 THC092E4 THC102E4 THC120E4

BAYHTRD436 THC092E4 THC102E4 THC120E4

BAYHTRD454 THC120E4

BAYHTRU309 THC072E3 WSC090E3

BAYHTRU318 THC072E3 WSC090E3

BAYHTRU327 THC072E3 WSC090E3

BAYHTRU336 THC072E3 WSC090E3

BAYHTRU409 THC072E4 WSC090E4

BAYHTRU418 THC072E4 WSC090E4

BAYHTRU427 THC072E4 WSC090E4

BAYHTRU436 THC072E4 WSC090E4

BAYHTRUW18 THC072EW WSC090EW

BAYHTRUW27 THC072EW WSC090EW

BAYHTRUW36 THC072EW WSC090EW

BAYHTRW309 TSC090E3 WSC072E3

BAYHTRW318 TSC090E3 WSC072E3

BAYHTRW327 TSC090E3 WSC072E3

BAYHTRW336 TSC090E3 WSC072E3

BAYHTRW409 TSC090E4 WSC072E4

BAYHTRW418 TSC090E4 WSC072E4

BAYHTRW427 TSC090E4 WSC072E4

BAYHTRW436 TSC090E4 WSC072E4

BAYHTRWW18 TSC090EW WSC072EW

BAYHTRWW27 TSC090EW WSC072EW

BAYHTRWW36 TSC090EW WSC072EW

General Information

ACC-SVN67D-EN 5

General Information

General

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES. Installer
must mark unit nameplate with Heater Information per instructions on nameplate.

Note: If digit 9 in the unit model number equals "E" (Electro Mechanical Control), accessory relay

Figure 1. Electro Mechanical wiring diagram

BAY24X042 is required if the thermostat does not energize the fan circuit in the heating
mode. See Figure 1 for wiring information.

Inspection

1. Unpack all components of the kit.

2. Check carefully for any shipping damage. If any damage is found it must be reported
immediately and a claim made against the transportation company.

3. Check the heater nameplate model number and compare with Tab l e 4 , p . 14 , Table 5, p. 16,

Table 6, p. 17, Table 9, p. 19, or Tab le 10 , p . 1 9. Ensure that the available power supply and unit's

model number complies with the particular heater being used.

6 ACC-SVN67D-EN

Installation

Horizontal
Supply
Cover

Control
Box
Access
Panel

Removable
Insulation

Removable
Panel

Heat
Section
Access
Panel

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable
frequency drives or other energy storing components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.
Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could result in death or serious injury.

WARNING

Fire Hazard!

The BAYHTRA, BAYHTRB, BAYHTRD, BAYHTRU, and BAYHTRW heater kits require a one inch
clearance from the supply ductwork to any combustible materials. Failure to allow proper
clearance could result in combustible materials catching on fire which could result in death,
serious injury, or property damage.

1. Remove heater compartment access panel and unit control box access panel. See Figure 2.

Figure 2. Control covers and access panels

Note: On downflow units with or without duct work installed or horizontal units without ductwork

installed, remove horizontal supply cover from the rear of the heater compartment.

2. Remove insulation to expose perimeter of removable panel in the vestibule panel. See Figure 2.

3. Clip or cut the retaining tabs around the perimeter of the removable panel.

4. Remove the panel.

5. Check the opening in the vestibule panel. Remove any metal burrs or slivers that could damage
or pinch the heater elements resulting in a short circuit when elements are installed in the
opening.

Note: Locator tabs on the vestibule panel support the electric heat assembly and secure the

inward edge of the electric heat accessory control panel. Slits in the insulation should allow
the tabs to protrude through the insulation and be visible. However, it may be necessary to
work the insulation back from the tabs and slightly bend the tabs outward if difficulty is
encountered engaging the electric heater panel or the electric heat accessory control panel.

ACC-SVN67D-EN 7

See Figure 3.

Installation

Figure 3. Electric heater element panel

6. The electric heater element assembly has "BOTTOM" stamped in the mounting panel to identify
the proper position for mounting.

7. Refer to Ta b le 2 . If the unit/heater combination being installed is the same as any in this table
and the application is for horizontal airflow, the limit control TCO-A must be replaced with
the extra limit control shipped with the heater. Replace TCO-A following the instructions in
steps 8 and 9. If the unit/heater combination being installed does not correspond to any in this
table or if the application is for downflow airflow, skip steps 8 and 9 and go on to step 10.

Table 2. TCO-A replaced for Horizontal Duct Configuration

Unit Model Number

TSC120E4**B BAYHTRA427, 436, 454 Right

TSC120EW**B BAYHTRAW36, W54 Right

WSC120EW BAYHTRBW36, W54 Right

THC072E4, WSC090E4 BAYHTRU427, 436 Center

WSC090EW BAYHTRUW27, W36 Center

WSC072E3 BAYHTRW327, 336 Center

TSC090E4, WSC072E4 BAYHTRW427, 436 Center

TSC090EW, WSC072EW BAYHTRWW27, W36 Center

Electric Heater Model

Number

TCO-A

location

8. TCO-A is the limit control located in the center or right part of the heater mounting plate that
is located on the bottom of the two heater element assemblies. See Figure 4. To replace this
device, first remove the two wires connected to the terminals. Next, remove the two screws
which secure it to the heater element mounting plate. Once TCO-A has been removed from the
heater element mounting plate, discard this device.

8 ACC-SVN67D-EN

Figure 4.

TCO-A LOCATED ON THE RIGHT

TCO-A LOCATED IN THE CENTER

Installation

9. Obtain the replacement TCO-A which is secured with a wire tie near the unit/heater terminal
block located on the electric heater control panel. Attach it to the heater element mounting plate
with the two screws that were removed in step 8. Connect the two wires that were un-hooked
in step 8 to the terminals on the new TCO-A. Refer to the heater package wiring diagram to
assure that the wiring is connected properly.

Note: The back of the electric heater element assembly is supported by a factory installed Electric

Heat Support Rod Hanger or other sheet metal device in the unit.

10. Tilt the back of the electric heater element assembly slightly upward as it is positioned in the
opening to engage the support rod with the support rod hanger. The BAYHTRA, BAYHTRB, and
BAYHTRD models will have a guide rod and a support bracket to help with the installation. See

Figure 5. Be very careful to avoid dragging the heater element on the edges of the opening in

vestibule panel, as this could damage or pinch the heater elements resulting in a short circuit.
Engage the bottom edge of heater element panel with the two locator tabs. See Figure 3.
BAYHTRB and BAYHTRD kits will have 4 locator tabs along the top, a filler panel to be placed
below the heater, and 12 screws to attach the assembly in place. See Figure 6.

ACC-SVN67D-EN 9

Installation

GUIDE RODGUIDE ROD

SUPPORT BRACKETSUPPORT BRACKET

Figure 5.

Figure 6.

LOCATOR TABS

SCREWS NOT
REQUIRED ALONG
THE TOP

SCREWS

SCREWS

FILLER PANEL

11. Secure the electric heater element assembly with the necessary amount of screws.

12. Slide the electric heater control panel/access door assembly inward until the rear edge engages
with retaining clips. See Figure 3. For the BAYHTRS, BAYHTRT, BAYHTRU, and BAYHTRW kits,
secure the outer edge with 2 screws. The BAYHTRA, BAYHTRB, and BAYHTRD kits will secure
the control panel with screws at the top against the vestibule panel and against the indoor
divider panel. See Figure 7.

10 ACC-SVN67D-EN

Figure 7.

Screws

Installation

13. To install the hinged door stops, loosen one existing screw from the upper left side of the
electric heater compartment opening. Position each door stop with outer tab flush against
center post and secure each door stop with 1 or 2 screws. See zoom view in Figure 8 or Figure 9.

Figure 8. Single point power

ACC-SVN67D-EN 11

Installation

CC1

ROUTE WIRES
THROUGH
THE HOLE IN THE
PANEL

HINGED DOOR STOP

Figure 9.

CC1

ROUTE WIRES
THROUGH
THE HOLE IN THE
PANEL

HINGED DOOR STOP

14. Remove the wire nuts from W1, W2 and W3.

15. For models with the control box in the outdoor section, route the wires through the wire access
opening in the divider panel, then up to the unit control box entering through the bottom wire
access opening on the left side. See Figure 8. For models with the control box above the heat
exchanger section, route the wires through the hole in the panel separating the heater
compartment and the control box compartment. See Figure 9. Secure wires to the existing
harness.

16. In the unit control box, route the wires along the existing harness to contactor CC1. Secure wires
to existing harness.

17. Locate the low voltage wire harness with polarized plug in the electric heater section
compartment. Remove the factory installed jumper. Connect the low voltage polarized plug
from the unit to the polarized plug on the electric heater assembly.

18. Wire the heater element assembly to the electric heater control panel according to the wiring
diagram attached to the electric heater control panel door.

19. Secure the green ground wire from the electric heat control panel to the right hand wall of
electric heater compartment with star washer and #10 grounding screw.

20. Wire W1, W2 and W3 wires to CC1 according to the wiring diagram attached to the unit control
panel door.

21. Route single point power entry wires through the front access opening of the support panel
adjacent to the electric heater section compartment. Using good installation practices, provide
strain relief for high voltage wires where necessary. See Figure 8 or Figure 9.

NOTICE

Use only copper conductors!

Unit terminals are not designed to accept any other wiring. Failure to use copper conductors
may result in equipment damage.

12 ACC-SVN67D-EN

Installation

WARNING

Ground Wire!

All field-installed wiring must be completed by qualified personnel. All field-installed wiring must
comply with NEC and applicable local codes. Failure to follow this instruction could result in death
or serious injuries.

22. Wire according to the wiring diagram attached to the electric heater control panel door. Ground
unit at grounding lug provided on electric heater control panel assembly.

Important: After heater is installed and before applying power, verify that heating elements are

not damaged or pinched and that heating elements are not short circuited to each
other or to the heater frame or equipment cabinet by doing the following: Test every
heater element with ohmmeter and verify that heater element terminals are
electrically isolated from cabinet and ground (infinite resistance). On downflow
units with or without duct work installed or horizontal units without ductwork
installed, remove horizontal supply cover and carefully inspect elements after
installation for damage or proximity to supporting structure or cabinet. At least 1/4”
clearance is required around electric heater coils.

Important: Be sure to check tightness of all terminal connections, clamps, screws, etc., as these

may have become loose in shipment. Retighten all electrical connections after
equipment has been in operation and components have reached operating
temperature.

23. Install the magnets into the door as seen in Figure 8 or Figure 9. Magnets should lock into place
once installed. Close electric heater control panel access door, replace heat section access
panel and unit control box access panel. Replace horizontal supply cover. Be careful when
replacing cover and make sure gasketing is not torn or missing. Gasket must make water tight
seal.

24. Scratch out the square on unit nameplate showing heater model installed in unit.

ACC-SVN67D-EN 13

Electrical Data

Table 3. Air temperature rise (60 hz)

6 Ton 7 1/2 Ton 7 1/2 Ton 8 1/2 Ton 10 Ton

2000 CFM (2) 3000 CFM 3000 CFM 3400 CFM 4000 CFM

(See Note 2) (See Note 3) (See note 4) (See note 5)

Nominal

kW Input

9.0 1 14.2 14.2 9.5 9.5 9.5 8.4

11.3 1 14.9 14.9 11.9 11.9

16.9 2 22.3 22.3 17.8 17.8 15.7 15.7 13.4 13.4

18.0 1 28.5 28.5 19.0 19.0 19.0 16.7 14.2 14.2

22.6 2 29.8 29.8 23.8 23.8 21.0 7.9 17.9

27.0 2 42.7 42.7 28.5 28.5 28.5 25.1 21.3 21.3

33.80 2 26.7 26.7

36.00 2 56.9 56.9 37.9 37.9 37.9 33.5 28.5 28.5

54.00 2 42.7 42.7

1. The air temperature rise (F) across the heaters is: (Heater kW x 3414)/(1.08 x CFM)

2. The minimum allowable airflow for TSC072E with a 36.0 kW heater is 2200 CFM

3. The minimum allowable airflow for WSC072E with a 36.0 kW heater is 2450 CFM

4. The minimum allowable airflow for a TSC120E***B and THC120E with a 54kW heater is 3400 CFM.

5. The minimum allowable airflow for a WSC120 with a 54kW heater is 4000 CFM.

No. of

Capacity

Stages

TH/SC072E3
TH/SC072E4

TH/SC072EW

WSC072E3
WSC072E4

WSC072EW

TSC090E3
TSC090E4

TSC090EW

WSC090E3
WSC090E4

WSC090EW

TH/SC092E3
TH/SC092E4

TH/SC092EW

TH/SC102E3
TH/SC102E4

TH/SC102EW

TH/SC120E3
TH/SC120E4

TH/SC120EW

Table 4. Unit wiring with electric heat (single point connection) - standard efficiency

WSC120E3
WSC120E4

WSC120EW

Standard Indoor Motor Oversized Indoor Motor

Unit Model

Tons

7½

7½

7½

7½

Number

6 TSC072E3 BAYHTRS309* 6.8/9.0 1 36.5/36.5 50/50 37.8/37.8 60/60

6 TSC072E3 BAYHTRS318* 13.5/18.0 1 53.1/60.4 60/70 54.8/62.0 60/70

6 TSC072E3 BAYHTRS327* 20.3/27.0 2 76.6/87.5 80/90 78.3/89.1 80/90

6 TSC072E3 BAYHTRS336* 27.0/36.0 2 100.1/114.5 110/125 101.8/116.1 110/125

7½ TSC090E3 BAYHTRW309* 6.8/9.0 1 38.2/38.2 60/60 44.0/44.0 60/60

7½ TSC090E3 BAYHTRW318* 13.5/18.0 1 51.4/58.6 60/60 58.6/65.9 60/70

7½ TSC090E3 BAYHTRW327* 20.3/27.0 2 74.9/85.8 80/90 82.1/93.0 90/100

7½ TSC090E3 BAYHTRW336* 27.0/36.0 2 98.4/112.8 100/125 105.6/120.0 110/125

(2)

TSC092E3 BAYHTRT309* 6.8/9.0 1 43.3/43.3 50/50 46.4/46.4 60/60

(2)

TSC092E3 BAYHTRT318* 13.5/18.0 1 54.8/62.0 60/70 58.6/65.9 60/70

(2)

TSC092E3 BAYHTRT327* 20.3/27.0 2 78.3/89.1 80/90 82.1/93.0 90/100

(2)

TSC092E3 BAYHTRT336* 27.0/36.0 2 101.8/116.1 110/125 105.6/120.0 110/125

8.5 TSC102E3 BAYHTRT309* 6.8/9.0 1 46.3/46.3 60/60 49.4/49.4 60/60

8.5 TSC102E3 BAYHTRT318* 13.5/18.0 1 54.8/62.0 60/70 58.6/65.9 60/70

8.5 TSC102E3 BAYHTRT327* 20.3/27.0 2 78.3/89.1 80/90 82.1/93.0 90/100

8.5 TSC102E3 BAYHTRT336* 27.0/36.0 2 101.8/116.1 110/125 105.6/120.0 110/125

10 TSC120E3 BAYHTRA318* 13.5/18.0 1 57.5/64.8 60/70 —/— —/—

10 TSC120E3 BAYHTRA327* 20.3/27.0 2 81.0/91.9 90/100 —/— —/—

10 TSC120E3 BAYHTRA336* 27.0/36.0 2 104.5/118.9 110/125 —/— —/—

10 TSC120E3 BAYHTRA354* 40.6/54.0 2 151.4/140.5 175/150 —/— —/—

Heater Model

Number

Heater kW

Rating

(1)

208-230 Volts three phase voltage

Control

Stages MCA

Max Circuit

Breaker MCA

Max Fuse Size or

Max Fuse Size or

Max Circuit

Breaker

14 ACC-SVN67D-EN

Electrical Data

Table 4. Unit wiring with electric heat (single point connection) - standard efficiency (continued)

Standard Indoor Motor Oversized Indoor Motor

Max Fuse Size or

Tons

Unit Model

Number

Heater Model

Number

Heater kW

Rating

(1)

Control

Stages MCA

Max Circuit

Breaker MCA

480 Volts Three Phase

6 TSC072E4 BAYHTRS409* 9.0 1 18.2 25 18.8 25

6 TSC072E4 BAYHTRS418* 18.0 1 30.3 35 31.0 35

6 TSC072E4 BAYHTRS427* 27.0 2 43.8 45 44.5 45

6 TSC072E4 BAYHTRS436* 36.0 2 57.3 60 58.0 60

7½ TSC090E4 BAYHTRW409* 9.0 1 19.5 30 22.4 35

7½ TSC090E4 BAYHTRW418* 18.0 1 29.3 30 32.9 35

7½ TSC090E4 BAYHTRW427* 27.0 2 42.8 45 46.4 50

7½ TSC090E4 BAYHTRW436* 36.0 2 56.3 60 59.9 60

(2)

7½

7½

7½

7½

TSC092E4 BAYHTRT409* 9.0 1 21.5 25 23.0 30

(2)

TSC092E4 BAYHTRT418* 18.0 1 31.0 35 32.9 35

(2)

TSC092E4 BAYHTRT427* 27.0 2 44.5 45 46.4 50

(2)

TSC092E4 BAYHTRT436* 36.0 2 58.0 60 59.9 60

8½ TSC102E4 BAYHTRT409* 9.0 1 21.9 25 23.4 30

8½ TSC102E4 BAYHTRT418* 18.0 1 31.0 35 32.9 35

8½ TSC102E4 BAYHTRT427* 27.0 2 44.5 45 46.4 50

8½ TSC102E4 BAYHTRT436* 36.0 2 58.0 60 59.9 60

10 TSC120E4 BAYHTRA418* 18.0 1 32.5 35 — —

10 TSC120E4 BAYHTRA427* 27.0 2 46.0 50 — —

10 TSC120E4 BAYHTRA436* 36.0 2 59.5 60 — —

10 TSC120E4 BAYHTRA454* 54.0 2 70.4 80 — —

575 Volts Three Phase

6 TSC072EW BAYHTRSW09* 9.0 1 13.0 20 14.0 20

6 TSC072EW BAYHTRSW18* 18.0 1 23.8 25 24.8 25

6 TSC072EW BAYHTRSW27* 27.0 2 34.6 35 35.6 40

6 TSC072EW BAYHTRSW36* 36.0 2 45.4 50 46.4 50

7½ TSC090EW BAYHTRWW18* 18.0 1 23.4 25

7½ TSC090EW BAYHTRWW27* 27.0 2 34.3 35

7½ TSC090EW BAYHTRWW36* 36.0 2 45.0 45

(2)

7½

7½

7½

(1) No optional motors available for 3-5 tons. The standard motor for 1-phase models is a Multispeed, Direct Drive Motor. The Standard Motor for the 3-

(2) Dual refrigeration system.

TSC092EW BAYHTRTW18* 18.0 1 24.8 25 26.3 30

(2)

TSC092EW BAYHTRTW27* 27.0 2 35.6 40 37.1 40

(2)

TSC092EW BAYHTRTW36* 36.0 2 46.4 50 47.9 50

8½ TSC102EW BAYHTRTW18* 18.0 1 24.8 25 26.3 30

8½ TSC102EW BAYHTRTW27* 27.0 2 35.6 40 37.1 40

8½ TSC102EW BAYHTRTW36* 36.0 2 46.4 50 47.9 50

10 TSC120EW BAYHTRAW18* 18.0 1 27.0 30 — —

10 TSC120EW BAYHTRAW36* 36.0 2 48.6 50 — —

10 TSC120EW BAYHTRAW54* 54.0 2 57.4 60 — —

phase models is a Belt Drive Motor.

Max Fuse Size or

Max Circuit

Breaker

ACC-SVN67D-EN 15

Electrical Data

Table 5. Unit wiring with electric heat - heat pump - (single point connection) - standard efficiency

Standard Indoor Motor Oversized Indoor Motor

Max Fuse Size or

Tons

Unit Model

Number

Heater Model

Number

Heater kW

Rating

Control

Stages MCA

Max Circuit

Breaker MCA

208/230 Volts Three Phase

6 WSC072E3 BAYHTRW309A 6.8/9.0 1 59.8/63.4 70/80 61.1/64.7 70/80

6 WSC072E3 BAYHTRW318A 13.5/18.0 1 83.2/90.4 90/100 84.5/91.7 90/100

6 WSC072E3 BAYHTRW327A 20.3/27.0 2 106.7/117.6 110/125 108.0/118.9 110/125

6 WSC072E3 BAYHTRW336A 27.0/36.0 2 130.2/144.6 150/150 131.5/145.9 150/150

7½ WSC090E3 BAYHTRU309A 6.8/9.0 1 61.9/65.5 80/80 67.7/71.3 80/90

7½ WSC090E3 BAYHTRU318A 13.5/18.0 1 85.2/92.5 100/100 91.0/98.3 100/100

7½ WSC090E3 BAYHTRU327A 20.3/27.0 2 108.7/119.6 110/125 114.5/125.4 125/150

7½ WSC090E3 BAYHTRU336A 27.0/36.0 2 132.2/146.6 150/150 138.0/152.4 150/175

10 WSC120E3 BAYHTRB318A 13.5/18.0 1 98.8/106.1 100/110 —/— —/—

10 WSC120E3 BAYHTRB327A 20.3/27.0 2 122.3/133.2 125/150 —/— —/—

10 WSC120E3 BAYHTRB336A 27.0/36.0 2 145.8/160.2 150/175 —/— —/—

10 WSC120E3 BAYHTRB354A 40.6/54.0 2 192.7/181.8 200/200 —/— —/—

480 Volts Three Phase

6 WSC072E4 BAYHTRW409A 9.0 1 33.8 40 34.4 40

6 WSC072E4 BAYHTRW418A 18.0 1 47.4 50 48.0 50

6 WSC072E4 BAYHTRW427A 27.0 2 60.9 70 61.5 70

6 WSC072E4 BAYHTRW436A 36.0 2 74.4 80 75.0 80

7½ WSC090E4 BAYHTRU409A 9.0 1 32.5 40 35.4 40

7½ WSC090E4 BAYHTRU418A 18.0 1 46.1 50 49.0 50

7½ WSC090E4 BAYHTRU427A 27.0 2 59.6 60 62.5 70

7½ WSC090E4 BAYHTRU436A 36.0 2 73.1 80 76.0 80

10 WSC120E4 BAYHTRB418A 18.0 1 53.2 60 — —

10 WSC120E4 BAYHTRB427A 27.0 2 66.7 70 — —

10 WSC120E4 BAYHTRB436A 36.0 2 80.2 90 — —

10 WSC120E4 BAYHTRB454A 54.0 2 91.1 100 — —

575 Volts Three Phase

6 WSC072EW BAYHTRWW18A 18.0 1 34.0 35 34.9 35

6 WSC072EW BAYHTRWW27A 27.0 2 44.9 45 45.8 50

6 WSC072EW BAYHTRWW36A 36.0 2 55.6 60 56.5 60

7½ WSC090EW BAYHTRUW18A 18.0 1 36.1 40 38.1 40

7½ WSC090EW BAYHTRUW27A 27.0 2 47.0 50 49.0 50

7½ WSC090EW BAYHTRUW36A 36.0 2 57.7 60 59.7 60

10 WSC120EW BAYHTRBW18A 18.0 1 42.7 45 — —

10 WSC120EW BAYHTRBW36A 36.0 2 64.4 70 — —

10 WSC120EW BAYHTRBW54A 54.0 2 73.1 80 — —

Max Fuse Size or

Max Circuit

Breaker

16 ACC-SVN67D-EN

Table 6. Unit wiring with electric heat (single point connection) - high efficiency - 6-10 tons

Electrical Data

Tons

Unit Model

Number

Heater Model

Number

Heater kW

Rating

(1)

Control

Stages MCA

Standard

Indoor Motor

Max Fuse Size
or Max Circuit

Breaker MCA

Oversize

Indoor Motor

Max Fuse Size
or Max Circuit

208/230 Volts Three Phase

6 THC072E3 BAYHTRU309A 6.8/9.0 1 33.9/33.9 50/50 35.2/35.2 50/50

6 THC072E3 BAYHTRU318A 13.5/18.0 1 53.1/60.4 60/70 54.8/62.0 70/60

6 THC072E3 BAYHTRU327A 20.3/27.0 2 76.6/87.5 80/90 78.3/89.1 90/80

6 THC072E3 BAYHTRU336A 27.0/36.0 2 100.1/114.5 110/125 101.8/116.1 125/110

7½ THC092E3 BAYHTRD309A 6.8/9.0 1 42.7/42.7 50/50 —/— —/—

7½ THC092E3 BAYHTRD318A 13.5/18.0 1 57.5/64.8 60/70 —/— —/—

7½ THC092E3 BAYHTRD327A 20.3/27.0 2 81.0/91.9 90/100 —/— —/—

7½ THC092E3 BAYHTRD336A 27.0/36.0 2 104.5/118.9 110/125 —/— —/—

8½ THC102E3 BAYHTRD309A 6.8/9.0 1 44.7/44.7 60/60 —/— —/—

8½ THC102E3 BAYHTRD318A 13.5/18.0 1 57.5/64.8 60/70 —/— —/—

8½ THC102E3 BAYHTRD327A 20.3/27.0 2 81.0/91.9 90/100 —/— —/—

8½ THC102E3 BAYHTRD336A 27.0/36.0 2 104.5/118.9 110/125 —/— —/—

10 THC120E3 BAYHTRD318A 13.5/18.0 1 57.5/64.8 60/70 —/— —/—

10 THC120E3 BAYHTRD327A 20.3/27.0 2 81.0/91.9 90/100 —/— —/—

10 THC120E3 BAYHTRD336A 27.0/36.0 2 104.5/118.9 110/125 —/— —/—

10 THC120E3 BAYHTRD354A 40.6/54.0 2 151.4/140.5 175/150 —/— —/—

460 Volts Three Phase

6 THC072E4 BAYHTRU409A 9.0 1 16.6 25 17.4 25

6 THC072E4 BAYHTRU418A 18.0 1 30.3 35 31.0 35

6 THC072E4 BAYHTRU427A 27.0 2 43.8 45 44.5 45

6 THC072E4 BAYHTRU436A 36.0 2 57.3 60 58.0 60

7½2 THC092E4 BAYHTRD409A 9.0 1 19.8 25 — —

7½ THC092E4 BAYHTRD418A 18.0 1 32.5 35 — —

7½ THC092E4 BAYHTRD427A 27.0 2 46.0 50 — —

7½ THC092E4 BAYHTRD436A 36.0 2 59.5 60 — —

8½ THC102E4 BAYHTRD409A 9.0 1 22.9 30 — —

8½ THC102E4 BAYHTRD418A 18.0 1 32.5 35 — —

8½ THC102E4 BAYHTRD427A 27.0 2 46.0 50 — —

8½ THC102E4 BAYHTRD436A 36.0 2 59.5 60 — —

10 THC120E4 BAYHTRD418A 18.0 1 32.5 35 — —

10 THC120E4 BAYHTRD427A 27.0 2 46.0 50 — —

10 THC120E4 BAYHTRD436A 36.0 2 59.5 60 — —

10 THC120E4 BAYHTRD454A 54.0 2 70.4 80 — —

(1) Heater kW ratings are at 208/240V for 208/230V units, 480V for 460V units.

Breaker

ACC-SVN67D-EN 17

Electrical Data

Table 7. Air temperature rise 380/415 Volt (50 hz)

(Degrees C)

7

(Degrees F)

6 Ton 7.5 Ton 10 Ton 6 Ton 7.5 Ton 10 Ton

4100

M3/H

5100

M3/H

6800

M3/H

WSC072EDWSC090EDWSC120

kW Voltage Stages

11.3 380-415/50/3 1 8.3 6.6 --- 11.3 380-415/50/3 1 14.9 11.9 ---

12.5 380-415/50/3 1 9.1 7.3 --- 12.5 380-415/50/3 1 16.5 13.2 ---

13.5 380-415/50/3 1 9.9 7.9 --- 13.5 380-415/50/3 1 17.8 14.2 ---

16.9 380-415/50/3 2 12.4 9.9 7.4 16.9 380-415/50/3 2 22.3 17.8 13.4

18.8 380-415/50/3 2 13.8 11.0 8.3 18.8 380-415/50/3 2 24.8 19.8 14.9

20.2 380-415/50/3 2 14.8 11.8 8.9 20.2 380-415/50/3 2 26.6 21.3 16.0

22.6 380-415/50/3 2 16.5 13.2 9.9 22.6 380-415/50/3 2 29.8 23.8 17.9

25.0 380-415/50/3 2 18.3 14.6 11.0 25.0 380-415/50/3 2 32.9 26.3 19.8

26.9 380-415/50/3 2 19.7 15.7 11.8 26.9 380-415/50/3 2 35.4 28.3 21.3

33.9 380-415/50/3 2 --- --- 14.9 33.9 380-415/50/3 2 --- --- 26.8

37.5 380-415/50/3 2 --- --- 16.5 37.5 380-415/50/3 2 --- --- 29.6

40.4 380-415/50/3 2 --- --- 17.7 40.4 380-415/50/3 2 --- --- 31.9

6. For minimum design airflow, see performance table for each unit.

7. To calculate the temperature rise in Celsius at different airflow, use the following formula: Temperature rise (C) across electric heater = (kW x 2985)/

(M3 / H).

8. To calculate the temperature rise in Fahrenheit at different airflow, use the following formula: Temperature rise (F) across electric heater = (kW x 3414)/
(1.08 / H).

ED kW Voltage Stages

8

2400CFM3000CFM4000CF

M

WSC072 EDWSC090EDWSC120

ED

Table 8. Air temperature rise 380/415 Volt (50 hz)

(Degrees C)

Kw Voltage Stages

11.3 /

13.5

16.9 /

20.2

22.6 /

26.9

33.8 /

40.4

9. For minimum design airflow, see performance table for each unit.

10.To calculate the temperature rise in Celsius at different airflow, use the following formula: Temperature rise (C) across electric

heater = (kW x 2985)/(M3 / H).

11.To calculate the temperature rise in Fahrenheit at different airflow, use the following formula: Temperature rise (F) across electric
heater = (kW x 3414)/(1.08 / H).

10

380-

415/50/3

380-

415/50/3

380-

415/50/3

380-

415/50/3

6 Ton

4100

3

M

TSC07

2ED

8.3 /

1

2

2

2 --- --- ---

9.9

12.4 /

14.8

16.5 /

19.7

/ H

Ton

5100

M3 / H

TSC09

0ED

6.6 /

7.9

9.9 /

11.8

13.2 /

15.7

7.5

8.5

Ton 10 Ton 6 Ton 7.5 Ton 8.5 Ton 10 Ton

5800

M3 / H

TSC10

2ED

--- ---

8.7 /

10.4

11.7 /

13.9

(Degrees F)

6800

M3 / H

TSC12

0ED KW Voltage Stages

11.3 /

13.5

7.4 /

8.9

9.9 /

11.8

14.8 /

17.7

16.9 /

20.2

22.6 /

26.9

33.8 /

40.4

11

380-

415/50/3

380-

415/50/3

380-

415/50/3

380-

415/50/3

2400CFM3000CFM3400CFM4000CF

TSC072EDTSC090EDTSC102EDTSC120

1

2

2

2 --- --- ---

14.9 /

17.8

22.3 /

26.6

29.8 /

35.4

11.9 /

14.2

17.8 /

21.3

23.8 /

28.3

--- ---

15.7 /

18.8

21.0 /

25.0

M

ED

13.4 /

16.0

17.9 /

21.3

26.7 /

31.9

18 ACC-SVN67D-EN

Table 9. Cooling only units with electric heater — single power source — 380/415 Volt (50hz)

Standard Indoor Fan Motor Oversized Indoor Fan Motor

Maximum

Fuse Size Or

Maximum

Circuit

Breaker

Minimum

Circuit

Ampacity

Unit

Model No.

Heater Model

No.

Heater12

kW Rating

380/415 Volts Three Phase

BAYHTRS418 11.3 / 13.5 39 / 47 1 26.9 / 28.9 35 / 35 28.1 / 30.1 35 / 35

TSC072ED

TSC090ED

TSC102ED

TSC120ED

12.kW and MBH shown for 380V / 415V

BAYHTRS427 16.9 / 20.2 58 / 69 2 37.5 / 40.5 40 / 45 38.8 / 41.8 40 / 45

BAYHTRS436 22.6 / 26.9 78 / 92 2 48.3 / 52.1 50 / 60 49.5 / 53.4 50 / 60

BAYHTRS418 11.3 / 13.5 39 / 47 1 28.1 / 30.1 35 / 35 30.3 / 32.3 35 / 35

BAYHTRS427 16.9 / 20.2 58 / 69 2 38.8 / 41.8 40 / 45 40.9 / 43.9 45 / 45

BAYHTRS436 22.6 / 26.9 78 / 92 2 49.5 / 53.4 50 / 60 51.6 / 55.5 60 / 60

BAYHTRT427 16.9 / 20.2 58 / 69 2 38.8 / 41.8 40 / 45 40.9 / 43.9 45 / 45

BAYHTRT436 22.6 / 26.9 78 / 92 2 49.5 / 53.4 50 / 60 51.6 / 55.5 60 / 60

BAYHTRT427 16.9 / 20.2 58 / 69 2 40.9 / 43.9 45 / 45 40.9 / 43.9 45 / 45

BAYHTRT436 22.6 / 26.9 78 / 92 2 51.6 / 55.5 60 / 60 51.6 / 55.5 60 / 60

BAYHTRT454 33.8 / 40.4 116 / 138 2 73.1 / 79.0 80 / 80 73.1 / 79.0 80 / 80

Heater12

MBH

Control

Stages

Minimum

Circuit

Ampacity

Electrical Data

Maximum

Fuse Size Or

Maximum

Circuit

Breaker

Table 10. Heat pump units with electric heater — single power source — 380/415 Volt (50hz)

Standard Indoor Fan Motor Oversized Indoor Fan Motor

Maximum

Fuse Size Or

Maximum

Circuit

Breaker

Minimum

Ampacity

Unit Model

No.

Heater Model

No.

kW Rating

380/415 Volts Three Phase

BAYHTRS418 11.3/13.5 39/47 1 43.4/45.4 50/50 44.4/46.4 50/50

WSC072ED

WSC090ED

WSC120ED

13.kW and MBH shown for 380V / 415V

BAYHTRS427 16.9/20.2 58/69 2 54.1/57.1 60/60 55.1/58.1 60/60

BAYHTRS436 22.6/26.9 78/92 2 64.8/68.7 70/70 65.8/69.7 70/70

BAYHTRS418 11.3/13.5 39/47 1 46.3/48.3 50/50 48.0/50.0 50/50

BAYHTRS427 16.9/20.2 58/69 2 56.9/59.9 60/60 58.6/61.6 60/60

BAYHTRS436 22.6/26.9 78/92 2 67.7/71.6 70/70 69.4/73.3 70/70

BAYHTRT427 16.9/20.2 58/69 2 63.3/66.3 70/70 - -

BAYHTRT436 22.6/26.9 78/92 2 74.0/77.9 80/80 - -

BAYHTRT454 33.9/40.4 116/138 2 95.5/101.4 100/110 - -

Heater13

Heater13

MBH

Control

Stages

Minimum

Circuit

Ampacity

Circuit

Maximum

Fuse Size Or

Maximum

Circuit

Breaker

ACC-SVN67D-EN 19

Literature Order Number ACC-SVN67D-EN

Date November 2009

Supersedes ACC-SVN67D-EN (August 2009)

The manufacturer has a policy of continuous product and product data improvement and reserves
the right to change design and specifications without notice. Only qualified technicians should
perform the installation and servicing of equipment referred to in this literature.