GAS CONTROL VALVE
Figure 30 shows the ombination gas ontrol valves used on
these heaters
If gas
ontrol valve be omes defe tive, repairs should not
be attempted A new valve should be installed in pla e of
defe tive one
The installer may be able to observe and orre t ertain problems
whi h may arise when the unit is put into operation HOWEVER,
it is re ommended that only a quali ed servi e te hni ian or
quali ed agen ies, using appropriate test equipment, be allowed
to servi e the heater
As preliminary step, he k wiring against diagram, he k for
grounded, broken or loose wires Che k all wire ends to be sure
that they are making good onta t
SERVICE
ELECTRICAL SERVICING
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS WIRING ERRORS CAN CAUSE IMPROPER AND
DANGEROUS OPERATION
VERIFY PROPER OPERATION AFTER SERVICING
32
FIGURE 30.