robatherm RM Series - Operation Readiness and Controls

Commissioning and Maintenance
50 © robatherm
Chimney
Make connection to chimney in accordance with applicable regulations. The exhaust system
must meet the civil engineering and official regulations.
Readiness for Operation
Make ready for operation:
 Vent oil or gas line.
 Check adjustment values of the triple thermostat:
 Burner: approx. 70 °C
 Fan: approx. 40 °C
 Position of sensor approx. 10 cm downstream from combustion chamber
 For 2 stage burner check set values of single thermostat: approx. 60 °C.
Burner
Put burner into operation. The commissioning instructions of the burner manufacturer must
be followed precisely. Please ensure that the fan is in constant operation. The fuel supply
must be set in such a way that the rated capacity Q
N
is not exceeded. For this it is essential
to use a gas meter for a gas burner.
Check the flame; it must not touch the combustion chamber walls. Use flame head
extension or other nozzle angle.
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Control and Safety Bodies
Check triple thermostat:
 The fan should start at set “fan” value = 40 °C. Functional test by means of e.g. hot air
drier.
 The burner should switch off at set “burner” value = 70 °C. Functional test by means of
e.g. hot air drier.
 For functional test of the safety temperature limiter, heat the capillary by means of hot air
drier for example. Burner must switch off at approx. 100 °C and the safety temperature
limiter must lock. If this does not happen automatically, stop burner, replace triple
thermostat and repeat whole test.
 Unlock safety temperature limiter manually by reset button.
The single thermostat is to be tested in the same way as the triple thermostat. The second
burner stage must be switched on or off at approx. 60 °C.
Damper Regulation
For combustion chambers with bypass, the active direction of the dampers must be checked.
If necessary reverse direction of rotation of servo motor by adjusting the slide switch. For
further information see page 19.
Combustion chamber temperature regulation:
 If the heating requirement increases, the combustion chamber damper must open and
the bypass damper close. The dampers do the opposite when there is a reduced heating
requirement.
 In order to guarantee adequate cooling of the combustion chamber, the combustion
chamber damper may be closed no further than 10 mm of free opening cross section
between the damper blades. Provide a limit switch to switch off the burner.
Temperature control of flue gas:
 When under-running the set minimum temperature of the flue gas the combustion
chamber damper (if present) must close and the bypass damper must open. When the
set flue gas maximum temperature is exceeded, the burner capacity must be reduced.