Page No 34 Reznor, Guardian 1 Phase Electric Heat with Signal Pro, Installation Manual, EN 2021-11, D301375 Iss 0
SP
Parts replacement.
Warning
Ensure electrical power is
isolated from the product.
For access follow steps as stated in Installation
Section on page 13
1. GS units, remove all of the front covers,
remove the cover plate to access the
control panel, installers terminal block,
transformer and fan deck (motor and fans).
2. GR units, completely remove the inlet panel
Control panel
Make a note of the wiring at the
control panel. Make a note of the
dip switch settings
Make a note of the installer terminal block
wiring
1. Disconnect the wires from the control
panel terminals including the earth
connections which are bolted to the
chassis.
2. Disconnect the installer terminal block
assembly by removing the two screws
securing the block bracket to the control
panel mounting plate
3. Remove the control panel, this is secured
by two screws in the control panel
mounting bracket situated to the top of
the bracket furthest away from the honey
comb outlet grille.
4. With the control panel out of the unit
disconnect the blue wire from the
temperature sensor.
5. Replace the control board and reverse
the steps remembering to reconnect the
temperature sensor wire which goes
through the hole in the PCB
Reverse the steps to install the new control
panel
Set the dip switch for the location and follow
the networking address settings. For more
information refer to the section on page 18.
Heating element
1. Follow steps to remove the covers
2. Remove the fixing bolts holding the honey
comb outlet grill assembly and remove this.
3. Make a note of the wiring at the control
panel for the heating element and the
temperature sensor
4. Disconnect the wires at the heating
element to the control panel
5. Remove the fixing bolts in the fan deck
mounting plate which secures the heating
element.
6. Remove the heating element
7. Make a note of the wiring to the heating
element including all the jumper positions
8. Remove the wires and fit to the new
element pass them through ready for
connection to the control panel
9. Refit the heating element and reverse the
steps to install the new heating element
10. Ensure the temperature sensor is refitted
in the correct position and wired into the
TEMP terminal of the control panel.
Fan deck
1. Follow the steps to remove the covers
and the control panel, complete with its
mounting bracket as one of the fan deck
securing nuts are under the control panel
bracket.
2. With the control panel and bracket out
of the unit disconnect the wire from the
motor
Summary of Contents for GUARDIAN GB 1000
Page 2: ......
