Guardian 2.0 LP or Natural Gas Heater
www.lbwhite.com
Owner’s Manual • Guardian 2.0
12
NIPPLE
HOSE ADAPTER
TEE
NIPPLE
CAP
TO GAS CONTROL
VALVE INLET
WARNING
Electrical Shock Hazard
■ Disconnect the electrical supply before
connecting the thermostat to the heater.
■ Failure to follow this warning can result in
electrical shock, leading to personal injury
or death.
Thermostats
(Must be ordered separately)
1.
To Connect the Series Tap Plug
Thermostat Kit (500-09454):
a. Connect the heater power cord to the female side
of the series tap plug of the kit’s thermostat cord.
b. Plug the male side of the series tap plug on the kit’s
thermostat cord into a standard three-prong (grounded)
electrical outlet.
c. Start the heater and check for proper operation.
2.
To Connect the Direct Wired
Thermostat Kit (500-20176) to the Control
Box on the Heater:
a. Remove the two phillips head screws securing the
control box lid.
b. Remove the control box lid.
c. Remove the wire nut and separate the yellow wires.
d. Remove the liquid tight connector cap and the
black plastic plug. See Fig. 5.
FIG. 5
e. Insert the thermostat wires through the liquid tight con-
nector hole and the connector cap.
f. Using a wire nut, connect the black lead of the thermo-
stat to the yellow lead from the transformer (cutting and
stripping the thermostat lead may be required).
g. Using a wire nut, connect the white lead of the thermo-
stat to the yellow lead from the 24VAC of the ignition
control board (cutting and stripping the thermostat lead
may be required). See Fig. 6.
FIG. 6
h. Tighten the liquid tight cap around the connector body.
i. Install the control box lid and secure it.
j. Start the heater and check for proper operation.
Sediment Trap Assembly
Assemble the tee, nipples and cap together and tighten
securely. See Fig. 7. The sediment trap assembly must
always be mounted in a vertical position. Make sure pipe
thread compound that is resistant to both L.P. gas and
natural gas is used in making all connections. Check
all connections for gas leaks using approved gas leak
detectors.
FIG. 7
Variable Heat Output
1. Some models of propane (LP) gas or natural gas
heaters have a throttle valve for varying heat output
located between the gas control valve and gas manifold
assemblies. See Fig. 8. THIS IS NOT A MANUAL GAS
SHUT OFF VALVE.
2. The throttle valve can be adjusted to deliver either
minimum heat or maximum heat. When the throttle valve
handle is parallel to the gas flow, the valve is completely
open to deliver maximum heat output. The throttle valve
may be adjusted to minimum heat output by turning
the handle 90° to gas flow or any position between
maximum and minimum settings. See Fig. 9.
LIQUID TIGHT
CAP
PLASTIC
PLUG
WIRE
NUT
THERMOSTAT
CORD
POWER TO
THERMOSTAT
WIRE
NUTS
POWER FROM
THERM
OSTAT
