QVM 9
Series 30
Purge heating piping of air.
- Open the manual air vent in order to bleed
air from the unit.
- Shut off the manual air vent when the
pressure in the heating piping reaches the
operating pressure.
- The automatic air vent will automatically
remove remaining air in the heating piping.
Turn #1 DIP switch to “OFF” position
(Normal Operation mode).
Turn off unit. Use P/R valve to vent pressure
inside the unit. Remove & clean strainer.
Replace & start unit.
The unit will operate in accordance with the
room thermostat settings.
Check for leaks in all connections to the unit.
■ Is the flame pattern normal?
■ Is heating temperature set on the thermostat?
■ Is hot water provided from the water heater?
■ If the power supply to the water heater is shut off after
the test operation, completely drain water from the
system (heating & hot water) to prevent possible freeze
up.
Test Operation and Checks
STEP 10
STEP 11
STEP 12
STEP 13
■ Turn the water heater to “HEAT ON” at the
room thermostat.
■ If the CHECK lamp is illuminated, note the
error code
and follow the troubleshooting
guide. After the required adjustments have
been made, restart the unit. Disconnecting
and reconnecting the power may be required
to restart the water heater (at power button
“HEAT ON”).
■ In case of leaks water pipes, turn off power to
unit. Shut off all isolation valves. Inspect O-
ring connections and replace if necessary.
Check all fastening clips are securely in place
before opening the isolation valves.
STEP 14
CAUTION
Checkin
O
eration o
the uni
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