Adapting the unit to the heating installation 8
0020200954_00 SUSTAIN ..c Installation and maintenance instructions 21
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.
7.16 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.
7.16.1 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. Purge the heating installation. (→ Page 19)
5. Activate the display for the current operating status.
(→ Page 17)
Status codes – Overview (→ Page 32)
◁ If the product is working correctly, the display shows
S.04.
7.16.2 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 17)
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 burner anti-cycling time
▶ Set the diagnostics code. (→ Page 16)
Overview of diagnostics codes (→ Page 28)
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 16)
Overview of diagnostics codes (→ Page 28)
8.2.1 Pump diagrams
25c, 30c:
To Next Page
Loading...
