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27
NOTE:
1. Building temperature controls supply electric
power to building circulator.
2. Main ow switch proves main water ow before
energizing sequencing and resetting controls.
3. Outdoor thermostat required if building controls do
not provide automatic shutdown of reset controls
during warm weather.
Boilers and Secondary
Circulator are Controlled by
Dual Bulb, Dual Switch Controller
Staging and Outdoor Reset of
Main Water Temperature
CONTROL APPLICATION DIAGRAM - FOUR BOILER LINEAR-TEMP® INSTALLATION WITH TWO CIRCULATORS
FIGURE 20.
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