Potterton Eurocondense Plus Installation Manual page 11

COMMISSIONING
Gas/air ratio control
Changing over from LPG to
natural gas or vice versa
Adjusting and checking the CO
values
Controller stop mode (manual
adjustment of burner capacity)
Activating Controller
stop mode
P
Setting Controller stop mode
st
1 possibility
On heating circuit module HKM:
Kleinlast:
Minimum load Full load
or
bzw.
Important!
On room control module :
RRG: not possible
Completing CO adjustment
2
nd
2 possibility
On boiler module:
Full load setting
alternately
im Wechsel
P
With the gas/air ratio control for the Eurocondense Plus, the gas supply is
adapted to the air supply, which is factory-set.
Adjustment should be accomplished at maximum and minimum nominal
heat input, called full load and minimum load below.
The type of gas for the Eurocondense Plus boiler should be changed only by
an authorised gas installer.
To convert, replace the gas injector (Table 3) and adjust the CO
by adjusting the injector pressure on the gas valve.
The CO content should be between the following values at full load as
2
well as at minimum load:
Put the sticker with the new gas (provided with the kit) on the gas pipe.
2
Operate the Eurocondense Plus in the Controller stop mode to adjust and
check the CO
In the Controller stop mode, the burner can be set to all loads within the
modulation range.
Check the adjustment of the CO2 values at full load and minimum load.
Activate the controller stop mode on the boiler module (1): (See Fig. 2
2 x short +
2 x kurz +
for designation of controls).
pause
Pause
Hold the "Chimney sweep" button (12) down for more than 6 sec. until
the display "Fault" (8) flashes in red at intervals (2 x short and pause).
> 6 sec.
> 3 sec. The current, relative burner load then appears on the display (0 = min.; 100
= max.), whereby the number 100 is output in the form of a 1 and 00 in
sequence.
After activating the Controller stop mode on the boiler module, adjust the
Vollast:
burner capacity on the HKM with the hot-water control (Fig. 8).
New settings are taken over immediately by the BMU.
It is always necessary to adjust both settings (full load and minimum load)!
After adjusting the minimum load, check the full load again!
It is not possible to activate and adjust the Controller stop mode on the
RRG! However, the display can be called up at the RRG Info level.
To complete the CO2 adjustment, deactivate the Controller stop mode by
pressing the "Chimney sweep" button (12) > 1 sec. and then releasing.
Adjustment of the full load and minimum load on the boiler module can be
accomplished with the following steps:
100 does not appear on display (13):
press
kurz antippen
momentarily
To set the max. boiler load momentarily press the "Display mode" button (10).
The value "100" appears on display (13), i.e. the burner (fan) is now running at
the setting for the max. burner load.
CO content (natural gas): 8.3 % - 8.8 %
2
CO content (LPG): 9.5 % - 10.0 % (EC PLUS 90, 120)
2
CO content (LPG): 9.0 % - 9.5 % (EC PLUS 160, 200, 250)
2
values.
2
Left stop: Minimum load (-)
Right stop: Full load (+)
content
2
11