Nortek 1000E-1PH, Installation Manual

Page No 34 Reznor, Guardian GB GR and GS, Installation Manual,  EN 2021-08, D301299 Iss D

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