4.
In stopping the M2 water heater, you will operate it for two minutes after combustion ceases
with the __________
a.
voltage regulator switch in the OFF position.
b.
HEATER-ON/PURGE-ON switch in the HEATER-ON position.
c.
HEATER-ON/PURGE-ON switch in the PURGE-ON position.
d.
fuel pressure indication at 75 psi.
5.
When connecting the M2 water heater electrical power cable, you must be sure that the cable
__________
a.
connects the M2 water heater with the pump unit hose connector panel.
b.
does NOT pass over the exhaust stack.
c.
(free end of the power cable) passes through the stuffing tube and is connected inside the
control box.
d.
is NOT attached to a socket on the pump unit control panel.
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