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36 | Commissioning the heating system
7
Commissioning the heating system
This chapter describes the initial start-up procedure
regardless of the installed control device.
B Complete the start-up protocol during this process
(
Chapter 7.9, page 39).
Further information on boiler room layout and
clearances, combustion air requirements and venting
systems and boiler operational requirements can be
found in
Chapter 2.8, page 10.
CAUTION: Risk of boiler damage from
excessive dust and airborne particle levels.
B Do not operate the boiler when there is a
lot of dust in the boiler room, e.g. due to
construction work.
B Install an air filter if the combustion air
supply is very dusty (e.g. due to dirt
roads and paths or dust-generating
working environments such as quarries,
mines etc.) or contains airborne seeds
from composite plants.
7.1
Bringing the system up to operating
pressure
Bring the system up to the normal operating pressure
before commissioning.
CAUTION: Risk of damage to system due to
material stresses caused by temperature
differentials.
B Only fill the heating system when cold
(the flow temperature should be no more
than 100 °F (37 °C)).
B Top up the heating water or drain via the boiler drain
valve until the required operating pressure has been
reached: minimum 15 psi (1 bar), maximum
30 psi (2 bar) pressure.
B Bleed air from the heating system while filling.
6 720 648 162 (2011/08)
Fig. 55
Pressure/temperature gauge for showing
operating pressure and supply temperature
7.2
Checking the safety valve
B Make sure that no persons are in the discharge area
of the pressure relief valve.
B Raise the lever on the pressure relief valve.
The pressure relief valve must open and release
pressure. If the pressure relief valve does not discharge,
it must be replaced, because system components can be
damaged by excessive pressure.
7.3
Preparing the heating system for
operation
B Open the fuel supply at the main shut-off valve.
B Switch on the heating system emergency shut-off
switch and/or the appropriate circuit-breaker.
7.4
Starting up the burner
For further start-up steps, follow the burner start-up
sequence.To do so, it is essential that you consult the
burner and the control documentation.
7.5
Notes on commissioning the burner
Allow burner to operate for 15 to 20 minutes before
performing a combustion test. Earlier combustion tests
can lead to incorrect readings as a result of burning off
the sealing rope. We recommend rechecking the burner
after a few weeks of operation.
7 747 010 720-24.2RS
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