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NATURAL GAS MODELS:
CAUTION:
Check your gas line pressure before connecting heater to gas line. Gas line pressure
must be no greater than 8 inches of water column. If gas line pressure is higher, damage on
appliance regulator could occur.
PROPANE MODELS:
CAUTION:
Never connect heater directly to the gas supply.
This heater requires an external regulator (not supplied).
Install the external regulator between the heater and gas supply.
CAUTION:
Avoid damage to regulator. Hold gas regulator
with wrench when connecting into gas piping and/or fittings.
CAUTION:
Use pipe joint sealant that is resistant to gas
(Propane or Natural Gas).
IMPORTANT:
Install an equipment shutoff valve in an accessible location where the gas pipe goes
indoors. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. Apply pipe
joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant
in pipe could result in clogged heater valves. The installer must supply an external regulator with nominal
out let pressure of 11” water column and sufficient flow rates. Install external regulator with the vent
pointing down as shown in Figure 8. Pointing the vent down protects it from freezing rain or sleet. If
flexible gas hose is applied, it should meet the requirements of ANSI/UL569 Standard for Pigtail and
Flexible Hose Connection for LP-Gas. Improper regulator and/or gas hose assembly may occur damage
on your heater, property or/and personal body.
CAUTION:
Two gas lines installation at the same time is forbidden. Do not the open cover while the
heater is running.
CAUTION:
To avoid gas leakage at the inlet of appliance regulator, a qualified installer or service
technician must use steel or metal hex plug with sealant.
For changing from propane to natural gas supply (WDFT dual fuel models only):
1) Your heater is equipped with an unique automatic gas source detection and configuration system
allowing to perform both LP gas and nature gas without any manual conversion.
2) Anyway only a qualified installer or service technician can perform gas version from between LP
gas and natural gas supply because of the connection and installation external the heater.
CHECKING GAS CONNECTIONS
WARNING:
Test all gas piping and connections for leaks after installing or servicing. Correct all
leaks at once.
WARNING:
Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to
all joints. If bubbles form, there is a leak. Correct all leaks at once.
Propane/LP
supply tank
External regulator
Figure 8 - External Regulator with Vent Pointing Down
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