11
Plumbing Systems
Furrion Tankless Water Heater, Continued
Water Control Valve
The Water Heater is equipped with a water flow
control valve, set from the factory at MAX flow .
The valve will reduce the water flow and capacity
through the water heater to improve water heating
performance . Under extreme conditions, it may be
necessary to adjust the valve accordingly:
• Cold water inlet conditions approximately
less than 45°F (7°C)
• Higher water inlet pressures >65 PSI .
To operate (
Fig. 30
):
• REDUCE water flow: Rotate knob
clockwise
until a solid stop .
• INCREASE water flow: Rotate knob
counter clockwise
until a solid stop .
High Altitude Use
This appliance can be used at high altitude and has been tested
up to 4500ft . For prolonged use at higher altitudes please contact
support@furrion
.com
Antifreeze Function
(
for FWH09AFA and FWH09AFA-AM models only
for FWH09AFA and FWH09AFA-AM models only
)
• The water heater can be used in freezing conditions, by
operating a burner sequence program to keep the water
liquid . This function turns ON automatically when water
in the appliance falls below 43°F (6°C), then automatically
shuts OFF when it is warmed .
• It will likely be necessary to manually adjust the water con-
trol valve to the "
min
" setting when using the water heater
in freezing conditions .
• If the RV is to be stored, with no use, the water heater
must
be
winterized
appropriately per the instructions
on
page 9
.
• The freeze protection system only protects the water heater
appliance from freezing and will NOT prevent freezing of the
water system in the coach . Ensure the coach is properly
insulated and protected from freezing conditions .
• It is normal for the water heater to operate the burner
system at different frequencies and duration for this mode .
NOTE: The antifreeze function is inoperable if any
of the following are turned OFF:
•
Water Heater Appliance
•
12V+ house electric
•
Gas Supply
NOTICE
PRODUCT DAMAGE
DUE TO FROST
CONDITION
In frost conditions,
ambient temperatures
below 39°F (4°C), there
is a risk that water in
pipes, faucets and
appliance could
freeze.
This can cause
considerable damage
.
