Checking Leak-Tightness; Checking The Heating Mode; Thoroughly Flushing The Heating Installation ("Hot") - Vaillant ecoTEC exclusive 627 Installation And Maintenance Instructions Manual

◁
Do not measure the CO/CO₂ content or the gas flow
during calibration (status S.93).
◁
If the heat generator permanently switches from
status S.93 to status S.04 after approximately five
to six minutes, calibration at minimum load is com-
plete.
▶
In the next few minutes, measure the CO/CO₂ content
and the gas flow at minimum load.
▶
Use to end check programme P.02.
◁
Calibration and measurement in heating mode are
complete.
▶
Log the CO content (air ratio) and CO/CO
2
Benchmark gas boiler commissioning checklist.
9.13.5 Calibrating the heat generator and
measuring the CO/CO₂ content and gas
flow in cylinder charging mode
1. The following steps are only required if calibration and
measurement in heating mode (→ Page 29) could not
be completed successfully.
2. Ensure that there is a heat demand at the domestic hot
water cylinder.
3. If required, open all of the draw-off point and allow the
domestic hot water cylinder to cool.
4. Set the domestic hot water temperature at the heat gen-
erator to the maximum.
◁
There is a risk of scalding at the domestic hot water
draw-off points if the water temperature is set to the
maximum.
Danger!
Risk of burns and scalding!
There is a risk of scalding at the domestic hot
water draw-off points if the water temperature
is set to the maximum.
▶
Avoid contact with the water that escapes
from the domestic hot water draw-off
point.
5. Start check programme P.01.
◁
The heat generator starts in cylinder charging mode.
◁
The heat generator first switches between status
S.21 and status S.23.
◁
The heat generator switches to status S.93 after
approximately two minutes for calibration.
◁
Do not measure the CO/CO₂ content or the gas flow
during calibration (status S.93).
Condition: The domestic hot water temperature in the cylinder reaches the
maximum water temperature in the next five to six minutes.
▶
The heat generator does not switch to status S.24.
Note
Calibration is not complete and the CO/CO₂
content and gas flow cannot be measured.
▶
Use to end check programme P.01.
Alternatives 1:
6.
▶
Ensure that there is a heat demand at the domestic
hot water cylinder.
30
▶
If required, open all of the draw-off point and allow
the domestic hot water cylinder to cool.
▶
If required, carry out calibration and measurement
again.
6. Alternatives 2:
▶
Check the installation and, if required, carry out cal-
ibration and measurement again with the correct in-
stallation.
Condition: The domestic hot water temperature in the cylinder does not
reach the maximum water temperature in the next five to six minutes.
ratio in the
2
▶
If the heat generator switches from status S.93 to status
S.24 after approximately five to six minutes, calibration
at maximum heat input is complete.
▶
In the next few minutes, measure the CO/CO₂ content
and the gas flow at maximum load.
▶
Use
▶
Start check programme P.02.
◁
If the heat generator permanently switches from
status S.93 to status S.24 after five to six minutes,
calibration at minimum load is complete.
▶
In the next few minutes, measure the CO/CO₂ content
and the gas flow at minimum heat input.
▶
Use
◁
Measurement and calibration in cylinder charging
mode are complete.
9.14

Checking leak-tightness

▶
Check the gas pipe, the heating circuit and the hot water
circuit for leak-tightness.
▶
Check that the air/flue pipe has been installed correctly.
Condition: Room-sealed operation
▶
Check whether the vacuum chamber has been closed
tightly.
9.15

Checking the heating mode

1. Make sure that there is a heat requirement.
2. Call up Live monitor.
◁
If the product is working correctly, the display shows
S.04.
9.16 Thoroughly flushing the heating installation
("hot")
1. Operate the appliance until the boiler and the heating
system are up to temperature.
2. Check the heating system for leaks.
3. Connect a hose to the drain valve located at the lowest
position of the heating system.
4. Shut off the boiler, open the drain valve and all purge
valves on the radiators and allow the water to flow out
of the heating system and the boiler quickly and fully.
5. Close the drain valve.
6. Fill the heating system again with water as described in
Filling the heating installation (→ Page 27) and Purging
the heating installation (→ Page 27).
7. Re-fill the system until the system design pressure of
0,1 MPa (1,0 bar) is attained.
Installation and maintenance instructions ecoTEC exclusive 0020193966_04
to end check programme P.01.
to end check programme P.02.