Seton W-90E - WIRING DIAGRAM

WOOD BOILER INSTRUCTIONS Page 26 Copyright © 2011 Seton Wood Boilers all rights reserved
WIRING DIAGRAM AQUASTAT OPERATION
R
B
W
DRAFT
MOTOR
110
VOLTS
B
W
DRAFT
180°
THE BOILER WATER
TEMPERATURE IS
CONTROLLED BY THE
DRAFT CONTROL
LITTLE WHITE DIAL IN AQUASTAT
SHOULD BE SET AT 15°
DIFFERENTIAL
THE DRAFT IS
RUN THROUGH
R & B
DRAFT OPERATION
OPEN ON RISE OPERATION
R
B
W
OVER TEMP
200°
THE SETON BOILER REQUIRES SOME MEANS OF DISSIPATING RESIDUAL HEAT FROM THE FIRE
BOX WHEN THE DRAFT CLOSES AND THERE IS NO SECONDARY CIRCULATION. THE PRIMARY
CIRCULATION IS THE WATER IN THE BOILER THAT CIRCULATES THROUGH THE BOILER AND
HEAT EXCHANGER. THE SECONDARY CIRCULATION IS THE WATER AND PUMP THAT CIRCU-
LATES THROUGH YOUR HEATING SYSTEM. THE SECONDARY SYSTEM MUST BE OVERRIDDEN TO
DISSIPATE THIS RESIDUAL FIRE BOX HEAT. THE HEAT THAT NEEDS TO BE DISSIPATED IS VERY
SLIGHT AND WILL NOT OVER RIDE YOUR HEATING REQUIREMENTS.
CLOSE ON RISE OPERATION
LITTLE WHITE DIAL IN AQUASTAT
SHOULD BE SET AT 10° DIFFERENTIAL
THIS NORMALLY LOW VOLTAGE AND BY PASSES THE
THERMOSTAT ON YOUR LARGEST HEATING ZONE.
OVER TEMP CONTROL
160° to 180°
190° to 200°