SECTION 4
POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION , OPERATION AND MAINTENANCE MANUAL
PAGE 14
PARAMOUNT
Gas/Air Ratio Control:
With the gas/air ratio control
for the PARAMOUNT, 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.
Changing over from LPG to Natural Gas or Vice
Versa:
The type of gas for the PARAMOUNT boiler
should be changed only by an authorised gas
installer. To convert, replace the gas injector (Table
5) and adjust the CO
2
content by adjusting the
injector pressure on the gas valve. The CO
2
content
should be between the following values at full load as
well as at minimum load:
CO2 content (natural gas): 8.3% - 8.8%
CO2 content (LPG) 9.5% - 10.0%
Put the sticker with the gas (provided with the kit) on
the gas pipe.
Adjusting and Checking the Values:
Operate the
PARAMOUNT in the
controller stop mode
to adjust
and CO2 values.
Controller Stop Mode (manual adjustment of
burner capacity):
In the controller stop mode, the
burner can be set to all loads within the modulation
range. Check the adjustment of the CO
2
values at full
load and minimum load.
Activate the controller
stop mode on the boiler module
(1)
Activating Controller Stop Mode:
Hold the “Chimney Sweep” button
(12) down for
more that 6 sec
.
until the display “Fault” (8)
flashes in red
at intervals (2 x
short and pause). 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.
Setting Controller Stop Mode 1
st
possibility, on
heating circuit module HKM:
After activating the controller stop mode on the boiler
module, adjust the burner capacity on the HKM with
the hot water control.
Left Stop: Minimum load (-)
Right Stop: Full Load (+)
New settings are taken over immediately by the
BMU.
Important:
It is always necessary to adjust both
settings (full load and minimum load)! After adjusting
the minimum load, check the full load again.
On Room Control Module RRG: Not Possible:
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.
Completing CO
2
Adjustment:
To complete the CO2
adjustment, deactivate the controller stop mode by
pressing the “Chimney Sweep” button (12) > 1 sec.
and then releasing.
2
nd
Possibility, on boiler module:
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):
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.
GAS VALVE Setting
Full Load Setting On Gas Valve Then set the gas
valve to full load adjustment screw for full load,
(Fig.9) (see guide value For CO
2
).
Minimum Load Setting:
To adjust the minimum boiler load momentarily press
the “Chimney Sweep” button (12). The value “0”
appears on the display (13) i.e. the burner (fan) is
now running at the setting for min. burner load. Then,
the minimum load can be set on the gas valve
9adjustment screw for minimum load) (see guide
value for CO
2
). Then check the full load, if the gas
valve has been readjusted, check the minimum load
again!
CO
2
Adjustment
To complete the CO2 adjustment,
deactivate the controller stop mode by
pressing the “Chimney Sweep” button
(12) >
1 sec
and then releasing.
Full load setting
