Burner Orifi Ce And Gas Control Valve; Ignition Control - L.B.White Guardian AW060 Manual De 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. 19.
-- Screws from bracket at inlet of gas
control valve. See Fig. 19.
-- Burner retaining bolt from underside of
base. See Fig. 20.
2. Pivot the valve/manifold assembly as
necessary so orifi ce on manifold clears the
burner casting venturi port. See Fig. 21.
FIG. 19
SCREWS AT
VALVE INLET
FIG. 20
FIG. 21
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. 22 to under-
stand the ignition control's terminal designa-
tors if doing voltage checks on the control.
IND: 115 VAC from control to motor
L1: 115 VAC power supply to control
HSI: 115 VAC from control to hot surface
igniter
HSIG: Neutral return of igniter
L2: Neutral of control
W: 24 VAC input from transformer (without
this voltage the ignition control will not
function)
PSI: 24 VAC from control to air proving switch
FSI: Microamperage from control to fl ame
sensor
GV: 24 VAC from control to high limit and
then to gas control valve.
PSO: 24 VAC return from air proving switch
back to control
FSG: Ground of fl ame sensor
C: Ground for control
Also refer to "Operation Sequence" within this
manual as needed to understand operation of
the ignition control during a call for heat.
FIG. 22