8 Adapting the unit to the heating installation
20
Installation and maintenance instructions SUSTAIN ..s 0020200967_00
Settings
Unit
G20 natural
gas
CO
₂
after 5 minutes in full
load mode with front casing
closed
Vol.
–
%
9.2
±
1.0
CO
₂
after 5 minutes in full
load mode with front casing
removed
Vol.
–
%
9.0
±
1.0
Set for Wobbe index W
₀
kWh/m
³
15
CO in full load mode
ppm
≤
250
CO/CO
₂
≤
0.0031
5.
Set the CO
₂
content as required. (
→
Page 20)
7.9.5
Setting the CO
₂
content
1
1.
Remove the yellow sticker.
2.
Remove the blue covering cap
(1)
.
3.
Use an Allen key to turn the bolt in order to set the CO
₂
content (value with front casing removed).
◁
Turning to the right decreases the value.
◁
Turning to the left increases the value.
4.
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value stabilises.
5.
If an adjustment is not possible in the specified adjust-
ment range, you must not start up the product.
6.
If this is the case, inform Customer Service.
7.
Secure the covering cap.
7.10
Checking function and leak-tightness
Before you hand the product over to the operator:
▶
Check the gas line, the flue gas installation, the heating
installation and the hot water pipes for leaks.
▶
Check that the air/flue pipe and condensate drain pipe-
work have been installed correctly.
▶
Check that the front casing has been installed correctly.
7.10.1 Checking the heating mode
1.
Activate the heating mode on the user interface.
2.
Turn all thermostatic radiator valves on the radiators
until they are fully open.
3.
Allow the product to operate for at least 15 minutes.
4.
Fill and purge the heating installation. (
→
Page 18)
5.
Activate the display for the current operating status.
(
→
Page 15)
Status codes
–
Overview (
→
Page 32)
◁
If the product is working correctly, the display shows
S.04
.
7.10.2 Checking the hot water generation
1.
Activate the hot water handling mode on the user inter-
face.
2.
Open a hot water valve completely.
3.
Activate the display for the current operating status.
(
→
Page 15)
Status codes
–
Overview (
→
Page 32)
◁
If the product is working correctly, the display shows
S.14
.
8
Adapting the unit to the heating
installation
You can reset/change the system parameters (section "Us-
ing diagnostics codes").
Overview of diagnostics codes (
→
Page 28)
8.1
Burner anti-cycling time
To prevent frequent switching on and off of the burner and
thus prevent energy losses, an electronic restart lockout
is activated for a specific period each time the burner is
switched off. The burner anti-cycling time is only active for
the heating mode. Hot water handling mode during a burner
anti-cycling time does not affect the time function element.
8.1.1
Setting the maximum burner anti-cycling
time
1.
Set the diagnostics code. (
→
Page 15)
Overview of diagnostics codes (
→
Page 28)
2.
If required, adjust the maximum burner anti-cycling time
using the diagnostics code
d.02
.
8.1.2
Resetting the remaining burner anti-cycling
time
▶
Hold the
button down for more than 3 seconds.
◁
is shown in the display.
8.2
Setting the pump output
The product is equipped with a speed-regulated high-effi-
ciency pump, which adjusts independently to the hydraulic
conditions of the heating installation.
If you have installed a low loss header in the heating install-
ation, you should switch off the speed regulation and set the
pump output to a fixed value.
▶
If required, change the setting of the pump speed, which
depends on the operating mode, under diagnostics code
d.14
.
▶
Set the diagnostics code. (
→
Page 15)
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