Adapting the unit to the heating installation 8
0020134823_07 ecoTEC plus Installation and maintenance instructions 25
3. Adjust the target temperature for the connected do-
mestic hot water cylinder to the controller.
◁ The boiler adopts the set target temperature which
is set on the controller (automatic calibration in
newer controllers).
4. Set the hot water temperature.
Condition: Water hardness: > 3.57 mol/m³
– Water temperature: ≤ 50 ℃
7.16 Thoroughly flushing the heating system
("hot")
1. Ensure that the water within the boiler is clean and low
in temporary hardness and no system debris can circu-
late through the boiler during first firing.
2. Keep this firing time short and temperature no higher
than 50°C as this is just to remove contaminates and
not for balancing the system at this time.
3. Operate the boiler until the water is up to temperature
(max 50 °C).
4. Check the heating system for leaks.
5. Connect a hose to the drain valve at the boiler.
6. Shut off the boiler, open the drain valve and all purge
valves and allow the water to flow out of the boiler
quickly and fully.
7. Close the drain valve.
8. Proceed in accordance with the information provided
on treating heating water in "Checking and treating
the heating water/filling and supplementary water"
(→ Page 18).
9. Re-fill the boiler in accordance with "Filling and purging
the heating installation" (→ Page 21).
10. Ensure that the inhibitor levels are correctly maintained
throughout the boilers operational life.
Note
The actual reading on the digital pressure
gauge should ideally be 0,05 MPa (0,5 bar)
plus an additional pressure corresponding
to the highest point of the system above the
base of the boiler – 10 m head equals an ad-
ditional 1 bar reading on the pressure gauge.
The minimum pressure should not be less
than 0,1 MPa (1 bar) in any installation. If
the system is to be treated with an inhibitor
it should be applied at this stage in accord-
ance with the manufacturer’s instructions.
Further information can be found regarding
inhibitor treatment in "Checking and treating
the heating water/filling and supplementary
water" (→ Page 18).
11. Install the side section. (→ Page 11)
12. Install the front casing. (
→ Page 10)
8 Adapting the unit to the heating
installation
To reset the most important system parameters, use the
Unit configuration menu item.
Menu → Installer level Unit configuration
Or manually relaunch the installation assistant.
Menu → Installer level → Start inst. assistant
8.1 Calling up diagnostics codes
The settings options for more complex systems can be found
in the Diagnostics menu.
Menu → Installer level Diagnostics menu
Overview of diagnostics codes (→ Page 39)
Using the parameters that are marked as adjustable in the
overview of diagnostics codes, you can adapt the product to
the heating installation and the needs of the customer.
▶ Press or to change the diagnostics code.
▶ Press (Select) to select the parameter to change.
▶ Press or to change the current setting.
▶ Press (OK) to confirm your selection.
8.2 Setting the partial heat load
The partial heat load of the product is set to Auto at the
factory. If you still want to set a fixed maximum partial heat
load, you can set a value under D.000, which equates to the
product output in kW.
If the product is operated in cascade, you must increase
the offset for the minimum fan speed of the unit to the fixed
value 1500 rpm (D.050) when operating it with natural gas
and you must never raise the speed under D.050 any higher
when operating it with liquefied petroleum gas because a
higher speed is already being used.
If a domestic hot water cylinder (cylinder type VIH) is in-
stalled, you can adjust the partial load setting for the cylinder
charging to the cylinder type (D.077).
8.3 Setting the pump overrun
You can set the pump overrun under D.001 (factory setting:
5 min.).
Note
The internal pump's operating mode is set to
Comfort at the factory. The pump is switched on
when the heating flow temperature is not at Heat-
ing off (→ Operating instructions) and the heat
requirement is enabled via an external control.
You must not change the factory setting under
D.018!
8.4 Setting the maximum flow temperature
You can set the maximum flow temperature for the heating
mode under D.071 (default setting: 75 °C).
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