O Potterson CF 20/35, Инструкция по установке и обслуживанию

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At its minimum and maximum settings, the thermostat should control the wate
r flow temperature at approximately
55ºC-82ºC (130º F-
180º F). The thermostat has beencalibrated by the makers and no attempt sh
ould be made to re-
calibrate it on site. Turn the thermostat to the
‘O’ position and check that the m
ain burner shuts down.
Pump Over-run Thermostat (Applicable on fully pumped systems only)
The over-
run thermostat will keep the pump running when the boiler has shut down, as l
ong as the water temperature within the boiler is above approximately
79ºC (1
74ºF). Adrop of approximately 11ºC (20ºF) will occur before the thermostat will
switch off the pump.
Overheat Thermostat
The overheat thermostat is pre-
set and no adjustment is possible. It will require manually re-
setting and the pilot re-lighting if an overheat condition occurs. The re-
set buttoncan be found on the right hand side of the control panel. See
FIG. 2.
Gas Control Valve
1) Main Solenoid
Check the operation of the valve by turning off the electricity supply, either by t
he isolating switch or time control, where installed. The main burner must shut
downimmediately.
2) Flame Failure Valve
Turn the gas control knob to the
‘off’ position. The pilot must shut down, and a
"click" indicating thermocouple drop out, should be heard within 60 seconds.
External Controls
Check that any other external controls connected in the system such as time c
locks and thermostats, control the boiler as required.
Ensure that the electrical supply to the boiler is switched
‘off’.
Fitting Boiler Case
Fit the boiler case by engaging the holes in the case top panel over the lugs o
n the support plate which is attached to the fluehood. See
FIG. 18 .