G
G77x Intermittent Pilot Ignition Controls Technical Bulletin
13
The anticipator setting is normally equal to the ignition system current
draw, plus that of the pilot and main valve.
Due to variations in appliance wiring and valves, it is advisable to measure
the actual current draw of the heating system at the thermostat location.
Measuring this current can be accomplished by opening the thermostat
contacts (lowering the setpoint) and installing an AC ammeter across the
terminals, or by using a clamp-on ammeter with a 10-turn multiplier
attached to the terminals. See Figure 8.
IMPORTANT: Measuring the current with an ammeter will energize
the system. Wait until the appliance is in the run
condition before taking a current draw measurement.
Ten Tu r ns
WR
WR
AC Ammeter Low Scale Setting
To
Heating
System
To
Heating
System
Clamp-on Ammeter
(divide reading by ten.)
Figure 8: Measuring the Thermostat Current
Thermostat
Heat
Anticipator
Settings
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