1
TESTING
OF
COMPONENTS
AUTOMATIC
SAFETY
PILOT
VALVE
(TSII)
#55127
Pilot gas is supplied from the main valve inlet through a drilled passageway to the pilot burner. Pushing the
red reset button temporarily allows gas to flow to the pilot burner for ignition of the pilot burner flame. When
the bulb heats up, the main valve opens to allow gas to flow to the main burner. The red reset button is then
released.
If the pilot burner flame fails and cannot be reactivated the
following test can be performed:
Pilot burner adjustment: Refer to section on Page 3
Clean Pilot burner’s limiting orifice as follows:
1.
Disconnect gas tubing at the pilot burner body
2.
Remove cup shaped orifice from pilot burner body
3.
Clean orifice by blowing any foreign matter out the
orifice hole. Take care not to enlarge orifice hole.
4.
Replace components in reverse order. If the pilot
burner still does not operate or the main burner
comes with a low flame, or will not come at all,
replace the Automatic Safety Pilot Valve (TSII)
MAIN
MANUAL
CONTROL
VALVE
#70380
The main manual control valve is a simple ball valve. Due to its
simplicity, failures of this type of valve are practically non‐existent.
For difficulties associated with this control, it would be best to
replace the valve.
THERMOSTAT
FDTH
#71880
For any suspected thermostat problems the following procedures should be reviewed in this manual:
Thermostat adjustment
Bypass (Minimum Burner Flame) adjustment.
Thermostat calibration. Most thermostat failures will generally fall into one of the following three
categories:
Figure 1