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9. Commissioning
9 Commissioning
Initial commissioning must be done by a qualified
professional.
Before start-up, the heating installation must be completely emptied
and rinsed.
9.1 Filling the system
Fill the installation with water.
Vent the heating installation.
Fill the siphon with water.
9.2 Check points before commissioning
For Belgium: Any work on the gas valve unit is authorised
only if carried out by a qualified professional.
9.2.1
Checking the gas supply pressure
1. Close the gas valve.
2. Loosen the screw on the measurement connection by 2 turn
(Marker
).
3. Connect the manometer.
DTG... 130...
P min
(1)
Natural gas H (20 mbar)
Supply pressure
17
Pressure
16.2
Natural gas L (25 mbar)
Supply pressure
20
Pressure
18.8
Propane (37 mbar)
Supply pressure
25
Pressure
24.7
36
DTG (E) 35
DTG 45
P nom
P max
P min
P nom
(2)
(3)
(1)
(2)
20
25
17
20
19.2
24.2
15.8
18.8
25
30
20
25
23.8
28.8
18.2
23.2
37
45
25
37
36.7
44.7
24.5
36.5
DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus
Operation while the condensation water siphon is empty may
damage the boiler.
Check the pressure of the installation (Minimum pressure 0.8
bar; Recommended pressure 1.5 bar; Maximum pressure 4
bar).
Carry out a water tightness check.
Top up with more water if necessary.
4. Open the gas valve.
5. Check the pressure of the gas connection on the measurement
connection. The boiler is preset in the factory to operate on
natural gas.
If the pressure exceeds the authorised pressure range,
suspend commissioning (Authorised pressure range, see
page: 9). Inform the gas supply company.
The pressure measured on
reduced by the pressure drop of internal gas pipe.
6. Close the gas valve. Disconnect the manometer.
7. Tighten screw
8. Open the gas valve. Check the seal.
DTG 65
P max
P min
P nom
P max
(3)
(1)
(2)
(3)
25
17
20
25
23.8
14.5
17.5
22.5
30
20
25
30
28.2
16.3
21.3
27.3
45
25
37
45
44.5
24
36
44
is the supply pressure
.
DTG 90
P min
P nom
P max
P min
(1)
(2)
(3)
(1)
17
20
25
17
13.3
16.3
21.3
13.1
20
25
30
20
14.5
19.5
24.5
14.2
25
37
45
25
23.5
35.5
43.5
23.4
15/02/2011 - 300014279-001-J
DTG 115
P nom
P max
(2)
(3)
20
25
16.1
21.1
25
30
19.2
24.2
37
45
35.4
43.4
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