6 720 220 328
Revised
05-13
Subject to change without prior notice
3
HK series
h. 2 x 30 amp fuses + 2 x 60 amp fuses for 15kW
heater packages only
i. 4 x 60 amp fuses for 20kW heater packages
only
j. This installation manual
Caution
The heater element mounting screws and the
heater element cover mounting screws are the
same type of screw. Quantities used will depend
on the heater package type.
For technical assistance contact your local
distributor or Call Bosch Technical Support:
866-642-3198
3. Ensure following tools and supplies, needed
for installation, are available:
• Phillips screwdriver
• Small fl at head screwdriver
• 5/16” socket and a ratchet or drill
• Wire cutter
• Wire stripper
• 18 AWG wire (connect thermostat to the
electrical box)
• Torque Phillips head screwdriver
• Volt meter
InsTallaTIon
Packaged Units (Ce/Taxxx-xVT,
Ce/Taxxx-xHZ, Ce/Taxxx-xCf)
This section is for packaged units only. See
sections below for installation instructions for
split systems.
sTeP 1: DISCONNECTING THE POWER:
a. Turn system to “
OFF
” from your Thermostat
b. Turn the power to the heat pump to “
OFF
” at
the unit’s disconnect switch or breaker panel.
c. Remove the access panel(s) from the unit
exposing the blower section and compressor
section of the packaged heat pump unit. Place
the panel mounting screws aside in a safe
place as they will need to be reused when
putting the panels back on.
STEP 2:
Remove the heater collar cover plate(s) to
install the heater elements. (
See Figure 1
).
figure #1 – showing Collar mounted on blower housing,
element location and collar plate(s)
STEP 3:
Identify retainer pins on the end of the
heater element(s). These pins are to be inserted in
holes visible in the back of the heater collar. This
stabilizes the heater element and prevents
vibration of the heater elements.
STEP 4:
Slide the heater element(s) into the
mounting opening(s) on the heater collar, making
sure that the retainer pins engage in the holes in
the back of the collar.
Caution
It may be necessary to lower the blower in order
to complete this task.
When installing the heater elements into the
heater collar, ensure that the thermal overloads
are on the right side; this will be the “L1” side.
Secure each insert(s) with four of the supplied
sheet metal screws provided (
See Figure 2
).
Caution
It may be necessary to remove the line voltage
wires that are connected to the element(s) from
heater electrical box in order to complete
installation.
Remove the wires from heater contactor and
terminal block at “L1” only. If wires are removed
during installation, ensure that they are marked
Installation
Summary of Contents for HK050-1XXX-RE
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