Guardian PowerVent Training Manual SVC900; Rev 1
Page 39
HOW TO REPLACE THE GUARDIAN POWERVENT VACUUM SWITCH
1. Turn the unit off and unplug the
heater. If not, you could be shocked
with 120 volts of electricity.
2. Unscrew the vacuum switch on the
control housing and remove the
tubing.
3. Remove the red wire and blue wire
from the vacuum switch.
4. Discard old vacuum switch.
5. Insert the red wire to the NO/NC
terminal.
6. Insert the blue wire to the COM
terminal.
7. Re-insert the vacuum switch into the
control box and replace the screws
and tubing.
8. Plug unit back in; turn unit on; and
conduct function check.
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