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8.8.3
8.8.4
8.9
8.9.1
8.9.2
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0313286_LGSS_UKUK_Version 2.0, 05-06-2019
External ON mode switch (optional)
Install an external ON mode switch:
1.
Pull the cables through the grommet.
2.
Connect the cables to the two left connections on J17. (see 13.5)
3.
Set the appropriate settings in the interface (see 10.5.1).
Finalization
When all connections are made, install the cover on the water heater:
1.
Place the cover on the water heater.
2.
Use a screw driver to tighten the screws at the front of the cover.
Commissioning
To commission the water heater:
1.
Fill the water heater (see 8.9.1)
2.
Check the air pressure differential (see 8.9.2)
3.
Check the gas supply pressure (see 8.9.3)
4.
Check the CO
value (see 8.9.4)
2
5.
Turn on the water heater (see 8.9.5)
Filling
Refer to the installation diagram when you fill the water heater:
1.
Open the stop valve (11) in the hot water supply pipe.
2.
If applicable, open the stop valves (4) of the circulation pipe (C).
3.
Make sure that the drain valve (9) is closed.
4.
Open the nearest hot water draw-off point (14).
5.
Open the stop valve (4) of the cold water supply pipe (A). Cold water flows into the
water heater.
6.
Fill the water heater until a full water jet flows from the nearest draw-off point. The
water heater is completely full.
7.
Open all draw-off points to bleed the entire installation of air.
The water heater is now under water supply pressure.
8.
Make sure that no water comes out of the expansion valve (15) or the T&P valve (3).
If water comes out:
-
Examine if the water supply pressure is greater than the specified value in the
Technical details. If necessary, install a pressure reducing valve (1).
-
Examine if the expansion valve in the protected cold supply set-up is installed
correctly and is not defect. If necessary, replace the expansion valve.
Air pressure differential
Check the air pressure differential across the air pressure switch:
1.
Disconnect hose H of the air proving switch and connect this side of the hose to the
+ of the pressure gauge.
2.
Disconnect hose L of the air pressure switch and connect this side of the hose to the
- of the pressure gauge.
3.
Turn on the water heater (see 4.1).
4.
Read the pressure value from the pressure gauge while the water heater is pre-
purging.
5.
Compare the measured value to the value from the table (see 13.1).
Note
When the air pressure differential is not correct, refer to Displayed errors (see
12.1.2), error LDS with code XAC–XXXX.
6.
Set the control switch on the front of the water heater to 0 to turn off the water
heater.
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