1-31
BOILER SYSTEMS AND OPERATION
SL 80-399 MODULATING GAS BOILER
SL 26-260 G3, SL 40-399 G3 MODULATING GAS BOILERS
1.8.6 Thermostat Heat Anticipator
IBC “Therm.” contacts draw no power, so an anticipator setting for the thermostat is not
applicable with the SL modulating series boilers. In the case of a single temperature / heat
load where zone valves are used to manage individual thermostatically controlled zones,
each room thermostat’s heat anticipator should be adjusted to the current draw of its
associated zone valve.
Figure 36 : Electric wiring connections (full-page wiring diagram on the back of this manual}