Stanley Alpha 120K, Commissioning Instructions

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It is advised to use a 3-channel programmer, to control
the cooker as the third channel can control the cooker.
The latest publication of Part L of the Building Regulations
states that “separate timing controls should be provided
for space heating and water heating”.
Consideration should be given to fitting a frost thermostat
switch, which should be set to operate at a temperature of
approximately 4°C.
Consideration must be given when selecting 3 port mid-
position or 2 port zone valves.
It is essential that the capacity of the individual valves are
considered to enable the correct size to be chosen.
For this range of appliance, where Honeywell valves are
selected, a guide to selection is as follows:-
Model:-
8120K - 28mm (1”) 2 port only
8150K - 28mm (1”) 2 port
Typical 3-channel programmer set-up.
Channel 1 controls the cooking facility.
Channel 2 & 3 controls the boiler facility which is space
heating and water heating.
WARNING: POWER TO THE APPLIANCE AND
AUXILIARY CONTROLS i.e. PROGRAMMABLE ROOM
STAT MUST BE VIA THE SAME ISOLATION SWITCH.
Please refer to Fig. 26.
Site requirements
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HEATING CONTROLS HEATING LAYOUT