Camus Hydronics Valiant FT VA0080, Manual, Page: 60 / 79

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8.6 COMBUSTION AND VENTILATION AIR
Check frequently to be sure that the flow of combustion air
to the appliance is not obstructed. Unless air is piped
directly to the heater combustion air must be provided to the
mechanical room with openings sized per the requirements
of the current B149 or National Fuel Gas Code. The Valiant
FT is setup to allow outdoor combustion air to be connected
directly to the appliance. It is highly recommended that
combustion air be connected directly to the appliance. For
installations in a common boiler room with atmospheric
appliances or if there is the possibility of negative pressure
in the boiler room, the air inlet must be piped directly to the
Valiant FT.
C
OMBUSTIBLE MATERIALS
8.7 FREEZE PROTECTION FOR INDOOR &
OUTDOOR INSTALLATIONS
Installations are not recommended in areas where the
danger of freezing exists. Proper freeze protection must be
provided for appliances installed outdoors, in unheated
mechanical rooms or where temperatures may drop to the
freezing point or lower. If freeze protection is not provided
for the system, a low ambient temperature alarm is
recommended for the mechanical room. Damage to the
appliance by freezing is non-warrantable.
Location - Heating boilers, hot water supply boilers or water
heaters must be located in a room having a temperature of
at least 40ºF (5ºC).
A mechanical room operating under a negative pressure
may experience a downdraft in the flue of an appliance that
is not firing. The cold outside air may be pulled down the
flue and causing a frozen heat exchanger. This condition
must be corrected to provide adequate freeze protection.
For boiler freeze protection controls, see section 2.4.1.
8.8 IGNITION SAFETY SHUT-OFF DEVICE TEST
8.8.1 High Limit Test
The High Limit on this boiler is recommended to be tested
during start-up and during annual periodic maintenance.
The method to carry out the High Limit test is as below:
1. On the PB Control, enter into the Menu and select
“System Test”.
2. Then select “Test State” and scroll to “Max Temp”.
3. The boiler should lockout and the MN control
board should start flashing a red LED light.
4. Pressing the button beside the red LED light will
reset the control and end the lockout status on the
board.
8.8.2 LWCO Test
The LWCO should be tested during the annual periodic
maintenance in a manner as described below.
1. On the PB Control, enter into the Menu and select
“System Test”.
2. Then select “Test State” and scroll to “LWCO”.
3. The boiler should lockout in LWCO mode and a
red LED light should light up on the MN control
board.
Pressing the button beside the red LED light will
reset the control and end the lockout status on the
board.
NOTE
When the combustion air fan is removed for any reason,
the inlet to the burner must be covered to prevent foreign
objects from falling into the burner. Always look inside
the burner to check for dents. Do not place a burner back
into operation if the inner distribution screen has been
dented during the service operation, call the factory for
recommendations. Use care when removing and
handling the burner, Sharp objects or impact may
damage or tear the metal fiber surface rendering the
burner unfit for service.
CAUTION
Keep appliance clear from combustible materials; do
not store GASOLINE and other flammable vapors and
liquids in the proximity of the appliance.
CAUTION
Verify proper operation after servicing!