SECTION 15: REPLACEMENT PARTS
15.6 Pressure Switch
Pull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type of pressure switch for model. The pressure switches are color coded for each pressure setting.
Carry out a
MODEL | UHD[X][S] 75 | UHD[X][S]100 | UHD[X][S] 125 |
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Pressure Switch Kit P/N | 90439810 | 90439810 | 90439803 |
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Color Code | black | black | gray |
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Set Point in wc | .35 | .35 | .41 |
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Pressure Switch Snap Ring P/N | 90439850 | 90439850 | 90439850 |
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15.7 Ignition Control
The control mounts to the heat exchanger plate. Pull out ignition cable and wiring from board, noting their positions. Release the four mounting standoffs. Refit in reverse. Ensure correct location of ignition cable and all other wiring.
15.8 Limit Switches
15.8.1 Removal and Replacement
1.Remove the electrical connections to the switch.
2.Unscrew the two screws securing the switch.
3.Fit a new switch with two screws.
4.Reconnect the electrical connections and test operation.
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