Atag Blauwe Engel S-HR 15, Инструкции по установке и обслуживанию

Страница: 22 / 37

Installation instructions S-HR series page 22
13 Commissioning
The top of the casing is hooked behind a locking edge and
is locked behind the door on the front of the casing with
a screw. After removing this screw the casing must be
lifted at the bottom by which means it is released from the
locking edge. Then the casing can be removed forward.
With the S-HR settings such as burner pressure and
adjustment of the air quantity are unnecessary, due to
the fact that the boiler operates with a so-called zero
pressure control. By this means the correct gas quantity
is controlled by the suction operation of the fan. The fine
adjustment which is carried out at the factory is once-
only, which means that adjusting of these values is
unnecessary.
13.1 Checking for contamination
In order to be able to check the boiler for contamination
in the following running years it is advisable to measure
the maximum air displacement in the boiler when
putting the boiler into operation. This value can be
different with each type of boiler.
In order to be able to measure this value the following
operations must be carried out:
-
in order to enter the service chapter feed in the
access code as described on pages 19-21;
- select the manual fan setting without burner action
Step , by means of the Step key which will
indicate that the fan is off ;
- connect the digital pressure gauge hose to the
uppermost measuring nipple of the gas block
according to figure 12(open it before fitting the hose);
- take the fan to its maximum number of revolutions by
means of the + key;
- measure the pressure difference and write down this
value;
- when next servicing the boiler the value of the fan
output may not have reduced by more that 20%
compared to the value during commissioning. If this
value is lower than 20% the boiler does not require
maintenance.
13.2 Checking of the zero pressure control
The zero pressure control is set at the factory. This can
be checked by means of the following action;
-
make sure that the boiler is in operation and that it
can discharge the heat which it produces;
- in order to enter the service chapter feed in the
access code as described on page 21;
- select the manual fan adjustment with burner action
Step by means of the Step key, which will
indicate that the manual operation is off ;
measuring point air pressure difference
figure 12