To Fit New Boiler Control Thermostat - Stanley Alpha 120 Servicing Instructions

TO FIT NEW BOILER CONTROL
THERMOSTAT
SEE FIG. 35
Follow instructions
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.
TO FIT NEW BOILER PUMP
OVERRUN THERMOSTAT
SEE FIG. 36
Follow instructions
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.
in section ELECTRICAL
in section ELECTRICAL
Replacement of parts
FIG. 35
FIG. 36
20
(Electrical controls)
DESN 514747
DESN 514851