Technical data

Installation and Servicing ecoTEC plus 29
7 Functional checks commissioning (part II)
Commissioning and Service log.
7 Functional checks commissioning
(part II)
Functional checks
Procedure:
After installing and checking the gas supply pressure,
perform a function check before commissioning the
appliance and handing over to the user.
• Commission the appliance according to the relevant
operating manual.
• Check the gas supply pipe, flue system, heating
system and the hot water pipes for leaks.
• Check that the flue system has been installed
properly according to the flue system installation
manual.
• Check for ignition and an even flame on the burner.
• Perform a function check on the heating system (see
Section 7.1.).
• Perform a function check on the domestic hot water
system (If applicable optional accessories are fitted)
(see Section 7.1.1
7.1 Heating
• Switch on the appliance.
• Make sure that there is a heating demand.
• Press “i” to activate the status indicator.
As soon as a heat demand is received, the appliance
runs through the status indicators “S. 1” to “S. 3”, until
the appliance is running correctly in normal mode and
the display shows “S. 4”.
7.1.1 Domestic hot water (If optional VR65,
uniSTOR cylinder & Vaillant control are
installed)
• Switch on the appliance.
• Fully open the hot water tap.
• Press “i” to activate the status indicator.
If the water heating is working correctly, the display
shows the following: “S.24”.
Fig. 7.2 Display indicator during heating mode
7.1.2 Pump exercise programme
After a power cut or every 23 hour in frost protection
mode the pump will run for one minute to prevent it
from sticking. This will also occur during
normal
operating if there is no demand for more than
24 hours.
Fig. 7.3 Display indicator during water heating
Fig. 7.1 Functional checks (appliance on)
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