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2
HK Series
InTRoDUCTIon
Bosch HK Series Heater Package is a field
installable electric resistance heater kit designed
for use with the CE and TA series heat pumps.
The HK series heater package requires separate
electrical service connection, independent from
the heat pump's power supply. DO NOT wire the
heater elements into the same circuit as the
compressor.
Note:
• A heater collar is installed in the CE and TA
models, no need to order separately.
• The series heater packages are designed for
installation in the heat pump model published in
this document. Do not install this heater kit in a
heat pump not specified in this manual. Refer to
Table 3 on page 18 for compatibility.
• A heat pump thermostat with supplemental
electric heat feature is required to operate the
system when this kit is installed.
• 18 AWG wire will be needed to connect the
thermostat to the electrical box for the "W1" &
"EM" connections. See wiring diagrams at the
end of this manual.
Table 1: Electric Heater
Units
5kW
7.5 & 10 kW
TA025
ü
TA035
ü
TA049
ü
TA061
ü
TA071
ü
CE025
ü
CE035
ü
CE049
ü
CE061
ü
CE071
ü
6 720 220 328
Caution
Compatibilitytor Only)
15 kW
20 kW
x
x
ü
x
x
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
x
x
ü
x
x
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
Subject to change without prior notice
Improper installation of the electric resistance
heater can result in severe injury or death due
to electrical shock or fire.
Only trained and qualified personnel should
install, repair, or service this equipment.
All electrical service connection to the heater
must be done to National and local electrical
Standard & codes.
PRe-InsTallaTIon
1. UNPACK the HK heater kit and inspect for
contents and condition. If any part or the kit
appears damaged (i.e.: broken heater elements,
damage relays) or missing, do not attempt to
install the kit. Contact your local distributor for
further help
2. Ensure that the heater kit package includes the
following components. Contact your local
distributor for further help.
CoMPonenTs lIsT:
The following components should be found in the
heater kit package:
a. Pre-wired heater electrical box
b. Heater elements pre-wired to the heater
electrical box
c. Heater element(s) protective metal cover
d. Wire harness pre-wired at one end (used only in
units in which a second electrical box is added)
e. New wiring diagram
f.
Adhesive back electrical data label
g. Clear hardware accessory bag containing:
• Heater element mounting screws (4 for each
element bank)
• Heater element cover mounting screws (2 for
each cover)
• Two yellow wire nuts (used only for packaged
units; discard for split systems)
• Four electrical box mounting screws (used
only in units in which a second electrical box
is added)
Introduction
Revised 05-13
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