Boiler Thermostat; Combined Control; Remote Controls; Casing - Potterton Flamingo RS40 Installation And Service Manual

The correct adjustment is achieved when the length of the pilot flame completely envelops the tip of the
thermocouple, but the tip itself is still visible. See Figure 13.
When the pilot is set to the above instructions the E.M.F. generated by the thermocouple should be of the order of 18
- 32 my open circuit, 10 - 15 my closed circuit. Drop out should occur between 2 -4 my closed circuit.
C. Boiler Thermostat
1) At its maximum and minimum settings, the thermostat should control the water flow temperature at approximately
55ºC - 80ºC (130º - 182º F) respectively. This should be checked using preferably a thermometer in the flow pipe or
alternatively a 'clip-on' type if one is not fitted.
2) The thermostat has been calibrated by the makers and no attempt should be made to recalibrate it on site. Turn the
thermostat to the off position and check that the main burner shuts down.
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Installation Section – Page 15
D. Combined Control
Solenoid
Check the operation of the valve by turning off the electricity supply, either by the isolating switch or the time
control, where installed. The main burner must shut down immediately.
Flame Safety Valve
Check the operation of the valve as follows with the boiler running normally: - Turn the control button clockwise as
far as possible and a distinct click should be heard within 60 seconds indicating that the flame failure valve has
closed.
E. Remote Controls
Check that any other remote control connected in the system such as time clocks and thermostats, control the boiler
as required.

10. CASING

NOTE: Ensure that the electrical supply to the boiler is switched 'off'.
A. Fit the casing to the boiler, locating the tongue inside the casing top, into the trough on the air duct bracket. Secure
the case with the two captive screws at its lower edge, and the single captive screw at the top, adjacent to the locating
tongue.
B. Remove the thermostat knob, then fit the controls cover in position and secure it with the captive screw. Refit the
thermostat knob.
NOTE: The panel on the front of the controls cover, through which the thermostat spindle and the control and igniter
button protrude, can be adjusted by a simple sliding action to line up with the controls.
11. USER'S GUIDE
A user's guide is provided with this boiler but if possible, the installer should explain the operation of the boiler and
system to the householder.
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SERVICE SECTION – Page 16
SERVICE INSTRUCTIONS
To ensure continued efficient operation of the boiler it is necessary to carry out maintenance and cleaning
at regular intervals.
The frequency of cleaning will depend upon the particular installation conditions and the use to which the
boiler is put, but in general, once per year should be adequate.
Before the start of any maintenance, switch off the main electricity supply and disconnect the plug at the
main isolating switch and socket. Turn off the boiler main gas inlet cock.
If there has been any delay in cleaning, and the boiler has been switched off, it is desirable to operate the
boiler for a short time to dry out deposits in the flueways which, if they are left in the cold state, will absorb
moisture and become both corrosive and difficult to remove.
The following notes apply to the boiler and its controls, but it should be remembered that attention must
also be paid to the heating circuit itself including radiator valves, thermostats, the time control and the
expansion and feed water system. In all cases prior to maintenance, light up the boiler and check that the
pilot and main burners have a clean, even flame and that the gas rate and main burner pressure is-
correctly set.
NOTE:
Where it is required to break any seal during maintenance, the seal should be examined carefully for
damage and if necessary replaced. It is important to obtain the correct Potterton approved part for the seal