Start-Up / Shut-Down Instructions - L.B. White Guardian 2.0 AD/AW100 Serie Manuel Du Propriétaire

14
Guardian 2.0 LP or Natural Gas Heater
B. Connecting building controller with 1-10
VDC output signal to sign conditioner in
heater. See Fig. 11.
FIG. 11
SIGNAL CONDITIONER
P1 P2 P6 P7 AMP mAMP 0 -10 V DC
COM
24V COM (+) (-)
C. Connecting building controller with 0-20 mA
or 4-20 mA output signal to signal condi-
tioner in heater. See Fig. 12.
FIG. 12
Check with building control manufacturer to determine its
capacity in operating multiple heaters per control signal.
SIGNAL CONDITIONER
P1 P2 P6 P7 AMP mAMP 0 -10 V DC
COM
24V COM (+) (-)
Start-Up Instructions
Follow steps 1 - 6 on initial start-up after heater installation
by a qualified gas heater service person. For normal start-up,
simply turn thermostat above room temperature. The heater
will start.
1. Open all manual fuel supply valves and check for gas
leaks using approved leak detectors. The gas control valve
on the heater has a manual shut-off feature incorpo-
rated into the valve assembly. Make sure the indicator
on the valve is turned to the ON position. See Fig. 13.
AW060/100/250 gas valve shown.
FIG. 13
Owner's Manual • Guardian 2.0
2. Connect the electrical cord to an approved electrical
3. Set the thermostat to desired room temperature.
- +
4. This heater includes an ignition control module for
COM
On the back side of the heater is a red light emitting
diode (LED). This LED indicates the status of the heater.
During normal operation, the LED will NOT be ON. Any
flash pattern by the LED is indicative of a problem in the
operation of the heater. Refer to the troubleshooting sec-
tion of this manual or scan the QR Code for assistance
in troubleshooting. Only qualified and properly trained
personnel shall service or repair the heater.
5. On a call for heat, the motor will start up and run for
AW Models
6. The motor will stop. After the motor has stopped, the
COM
AD Models
7. After five second pre-purge, the motor will continue to
8. Both models ignition control will make up to three
NOTE: It is normal for air to be trapped in the gas hose
Shut-Down Instructions
If the heater is to be shut-down for cleaning,
maintenance or repair, follow steps 1-4. Otherwise,
simply turn thermostat to OFF or no heat for standard
shut down.
1. Close all manual fuel supply valves.
2. With the heater lit, allow heater to burn off excess fuel
3. Position thermostat to OFF or no heat position.
4. Disconnect the heater from the electrical supply.
outlet.
purposes of controlling the timing of the ignition pro-
cess of the heater as well as monitoring of the safety
functions. The control module is contained within the
control enclosure.
five (5) seconds. This pre-purge is a safety feature
and a normal operational characteristic prior to ignition
taking place.
igniter will heat up (approximately 15 seconds). After
the igniter warm up time has been achieved, the motor
will start again and shortly there after ignition will occur.
run and the igniter should spark with ignition occurring.
trials for ignition. If ignition does not occur, the ignition
control board will "lock out" and a three time flash code
will be indicated by the LED.
on new installations. The heater may attempt
more than one trial for ignition before the air is
finally purged from the line and ignition takes
place.
in gas supply hose.