4. Lower insulation blankets back into position, one at a time. Carefully tuck the sides of the insulation
into the edges, corners, and around the exposed portions of the heating element to ensure maximum
efficiency.
NOTE:
Use face mask, gloves, and long sleeved garments when handling insulation materials in
accordance with generally accepted safety practices.
5. Reinstall the galvanized front panel and secure it to the system using the screws originally removed.
6. Route element harnesses through the 1” wire connectors, using one connector/harness until tape is
centered.
7. Attach element lead wires to element terminals. Start at the top using the color chart below. Repeat
pattern as necessary. The neutral white wires are jumpered together in sets of three.
277/347V =
Systems
Black Top
White
Red
White
Blue
White
8. Route the orange wire to the electrical compartment. Cut the wire and crimp ends (found on orange/
black wires in electrical compartment). Connect the orange wires to the orange/black wires.
9. Remove the blower access cover from the base left side. Locate the blue core blower wires and purple
(violet) water temperature sensor wires.
10.
Route the wires through the flanged hole at the front left corner of the base. Continue routing up to the
electrical compartment through 1/2” knockout. Connect the blue core blower wires to black and the blue
wires. Connect the two purple (violet) wires to the two purple wires.
BRICK CORE TEMPERATURE SENSOR INSTALLATION
1. Remove the screw(s) by the brick core temperature sensor connector holes
in the galvanized front panel.
2. Route the brick core sensors through the 1/2” wire connector up to the
relay driver board. The yellow wire from each sensor must be connected to
the Y terminal of the proper sensor connection terminal block, and red to
R.
Polarity of sensors is critical.
T
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| 3.06
CAUTION
Risk of improper operation.
Proper installation of the brick core temperature sensor is critical to
the operation of the heating system. Read and follow installation instructions carefully.
CORE TEMPERATURE
SENSOR CONNECTIONS
FIGURE 7
Core
Temperature
Sensors
Connect To Core "E"
On 80kW Module Only
Relay
Driver
Board
Connect To
Core "D"
Connect To
Core "C"
Sensor connections MUST be installed as follows (see Figure 7):
• Bottom sensor to core C
• Second sensor to core D
• Third (if equipped) to core E
3. Insert the brick core temperature sensors through the holes in the
galvanized front panel. The sensors must pass through the blanket and
board insulation and into the brick core. Use the sensors to aid in making a
passageway by rotating the sensors while gently pushing inward.
4. Once brick core sensors are installed, re-install sensor mounting screws to
secure and ground the sensors.
