periodically inspected the intake and
ENG
the exhaust terminal for debris or
snow removed from blocking the ter-
FR
mination.
4.4.4 Location main shutoff valve (fig. 22)
Caution: label all wires prior to disconnection
when servicing controls.
Wiring errors can cause improper and dan-
gerous operation.
36
Any dirt within the vent shall be remo-
ved with a soft brush.
As common vent can not be used in
positive pressure exhaust systems.
GAS CONNECTION
4.4.3 Fan and pump
The pump and fan don't need any lubri-
fication.
Verify proper operation after servicing.
Fig. 22