Stanley Alpha 120 - Boiler Control Thermostat Replacement; Boiler Pump Overrun Thermostat Replacement

SEE FIG. 35
Follow instructions in section ELECTRICAL
COMPONENT ACCESS, Steps 1 to 6.
1. Undo the two screws on the front of the chassis which
hold the thermostat in place.
2. Remove the two push-on connectors from back of
thermostat.
3. Replace thermostat. Take care to push thermostat
phial correctly into the pocket provided. The
thermostat should be mounted with tag P at the right
hand side.
4. Re-connect push on connector wires. The GREY wire
to 1 and WHITE wire to P.
To complete, follow instructions in RE-ASSEMBLE, Steps
1 to 6.
SEE FIG. 36
Follow instructions in section ELECTRICAL
COMPONENT ACCESS, Steps 1 to 6.
1. Undo the two screws on the front of the chassis which
hold the thermostat in place.
2. Remove the three push on connectors from back of
thermostat.
3. Replace thermostat. The thermostat should be
mounted with tag P at the left hand side. Take care to
push on thermostat phial correctly into the pocket
provided.
4. Re-connect push on connector wires. The GREY wire
from the pump to P, the other BROWN wire to 2 and
the YELLOW to 1.
To complete, follow instructions in section RE-
ASSEMBLE, Steps 1 to 6.
Replacement of parts
(Electrical controls)
TO FIT NEW BOILER CONTROL
THERMOSTAT
20
FIG. 35 DESN 514747
TO FIT NEW BOILER PUMP
OVERRUN THERMOSTAT
FIG. 36 DESN 514851