10.1 Performance check
Check if the performance of all components is
correct:
1. Make sure that the water heater operates the
operating cycle correctly.
2. Make sure that the color of the flame is blue.
3. If applicable, make sure that the T&P valve
operates correctly.
Open the T&P valve pressure relief and make
sure that water spurt out.
Warning
Hot water can come out of the T&P valve.
4. Make sure the pressure relief connection of
the inlet security group operates correctly.
Open this pressure relief and make sure that
water spurt out.
5. Make sure the pressure of the gas supply is
correct:
a) Remove the sealing screw of the test
nipple under the gas supply connection.
b) Connect a pressure gauge to the test
nipple as soon as you smell gas.
c) Use the pressure gauge to read the gas
supply pressure and compare it with the
value from the appendix Gas details (see
12.4).
d) Disconnect the pressure gauge.
e) Replace the sealing screw and tighten it
on the test nipple.
6. Make sure the burner pressure is correct (see
8.7.2).
10.2 Water-side
maintenance
To do water side maintenance:
•
Inspect the anode (see 10.2.1)
•
Inspect the inlet security group (see 10.2.2)
•
Descale the tank (see 10.2.3)
10.2.1 Inspect the anode
The life cycle of the anode is determined by the
quality and the quantity of the water that flows
through the water heater. Inspect the anode at
least once a year to make sure that the tank is
protected against corrosion.
To inspect the anode:
1. Close the pressure reducing valve in the cold
water supply.
2. Open the nearest hot water tap to reduce the
water pressure in the water heater.
w
3. Use a wrench to loosen the anode.
4. Take the anode out of the water heater.
5. Inspect the volume of the anode. When the
anode is consumed for 60 % or more, replace
the anode.
Note
If the anode needs to be replaced, always use
an anode of the same type. Please refer to the
type and the serial number on the data plate.
6. Place the anode in the water heater.
7. Use a wrench to fasten the anode. Make sure
that the connection is watertight.
Note
Never install an anode isolated from the metal
tank.
Fig. Inspect the anode
10.2.2 Inspect the inlet
security group
To inspect the inlet security group:
1. Check if the cold water supply is open. If not,
open the cold water supply.
2. Open the relief valve of the inlet security
group and make sure that the water flows
out with a full jet of water.
3. Close the relief valve.
4. Check if the water is drained through the
tundish. If not, remove the blockage.
5. Check the water flow again by opening the
relief valve.
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Installation, Maintenance and Service part
