Burner Orifi Ce And Gas Control Valve; Ignition Control - L.B.White Guardian AD060 Manual Del Usuario E Instrucciones

Guardian LP or Natural Gas Heater
22
Burner Orifice and
Gas Control Valve
1. Remove the following:
-- Hose and sediment trap from heater.
-- Plastic bushing at gas inlet hole
(if applicable). See Fig. 17.
-- Screws from bracket at inlet of gas
control valve. See Fig. 17.
-- Burner retaining bolt from underside of
base. See Fig. 18.
2. Pivot the valve/manifold assembly as
necessary so orifi ce on manifold clears the
burner casting venturi port. See Fig. 19.
FIG. 17
SCREWS AT
VALVE INLET
FIG. 18
FIG. 19
GAS CONTROL VALVE
ORIFICE
Owner's Manual • Guardian
BUSHING

Ignition Control

The control sends and receives voltages to
operate or verify operation of components.
Refer to the following and Fig. 20 to under-
stand the ignition control's terminal designa-
tors if doing voltage checks on the control.
L1: 115 VAC to control from power supply
IND: 115 VAC from control to fan motor
LED: Connection for control's diagnostic light
wiring harness
MV: 24 VAC from ignition control to high limit
switch and then to gas control valve.
PS2: 24 VAC from ignition air proving switch
back to control
PS1: 24 VAC from ignition control to air
proving switch
W: 24 VAC from transformer to ignition control
(without this voltage the ignition control will
not function)
FS: Micro amperage from control to fl ame
sensor for proving burner fl ame
R: No terminal
X: No terminal
C/COM: Control and burner ground
Also refer to "Operation Sequence" within this
manual as needed to understand operation of
the ignition control during a call for heat.
FIG. 20