Table of Contents
Advertisement
24 | Commissioning
6
Commissioning
NOTICE: Risk of boiler damage through contaminated
combustion air.
B Never operate the boiler in very dusty conditions, e.g.
if building work is taking place in the installation room.
B Ensure adequate ventilation.
B Never use or store chlorinated cleaning agents or
halogenated hydrocarbons (as contained in spray
cans, solvents or cleaning agents, paints and
adhesives, for example) in the boiler room.
B A burner contaminated during building work must be
cleaned before commissioning.
B Complete the commissioning report (
6.1
Flushing the heating system
If the heating system contains several heating circuits,
these must be flushed one after the other.
To prevent contamination in the boiler, flush the heating system prior to
commissioning.
B Flush the system prior to connection to the boiler.
-or-
B Isolate the heating flow and return at the boiler.
B Connect the heating flow to a water connection.
B Connect hose to the heating return of the heating system.
B Route hose from the heating return to a drain.
B Open connected consumers (e.g. radiators).
B Flush the heating system with fresh water until clear water emerges
from the heating return.
B Drain the heating system.
6.2
Filling the heating system
NOTICE: System damage through temperature
stresses.
B Only fill the heating system when cold (the flow
temperature must not exceed 40 °C).
B During operation, only fill the heating system via the
fill valve in the heating system pipework (return).
CAUTION: Health risk through contaminated drinking
water.
B Observe all country-specific regulations and
standards regarding the prevention of drinking water
contamination. In Europe, observe standard.
Open the automatic air vent valve only briefly for venting.
The fill and top-up water quality must comply with the specifications in
the operator's log supplied.
The pH value of the heating water increases after the heating system has
been filled. After 3 – 6 months (initial service) check whether the pH
value of the heating water has settled down.
B Adjust the pre-charge pressure of the expansion vessel to the
required pressure (only for sealed unvented systems).
B Open the mixing and shut-off valves on the heating water side.
6 720 803 637 (2012/03)
chapter 6.6, page 25).
B Fill the heating system slowly and observe the pressure gauge whilst
doing so.
B Vent the heating system via the radiator air vent valves.
If the water pressure drops as a result of venting the system:
B Top up the system with water.
B Carry out a leak test in accordance with locally applicable regulations.
B After the tightness test, reinstate all components that were taken out
of operation.
B Ensure that all pressure, control and safety equipment is functioning
correctly.
Once the boiler has been tested for tightness and no leaks have been
found:
B Set the correct operating pressure.
B Close the automatic air vent valve.
6.3
Preparing the heating system for operation
Observe the following points during commissioning:
B Before commissioning, vent the heating system via the ventilation
facilities provided for this purpose.
B Check that the inspection aperture on the flue gas collector is closed.
B Check that the combustion chamber door is securely closed.
B Check that the safety equipment (e.g. safety valve, minimum and
maximum pressure limiters, high limit safety cut-out) is functioning
correctly.
B Check that the required operating pressure has been achieved.
B Check the flange connections and other connections for tightness.
B Check the control unit connections and temperature sensor
positions.
B Fill the condensate siphon.
6.4
Commissioning the control unit and burner
By commissioning the control unit you automatically commission the
burner as well. The burner can then be started by the control unit. For
further information, see the installation instructions of the relevant
control unit or burner.
B Use the control unit to commission the boiler.
B Set the control unit parameters (
B Observe the commissioning times (
B Complete the commissioning report in the technical documentation
of the burner.
chapter 6.5, page 25).
chapter 6.1, page 24)
Uni Condens 6000F
Advertisement
Table of Contents
