E09.012.246 Manual S-WG
96
14
ADJUSTING AND SETTING THE BURNER
Before carrying out any adjusting of the burner, carefully read this complete chapter.
14.1
Introduction
The burner must always be adjusted in the next situations:
A.
- A new water heater is installed
- As part of a service/maintenance check, in case the CO
2
values turn out to be incorrect
Adjustment procedures for situation
A
are described in
§ 14.2
.
B.
- The gas control safety valve has been (re)placed
- Another type of gas is applied: gas conversion
Adjustment procedures for situation
B
are described in
§ 14.3
.
In either of the four cases described in
A
and
B
, always check the gas/air ratio of the combustion figure (CO
2
) at
maximum and minimum input. First set the water heater at maximum load and subsequently at minimum load,
and repeat if necessary.
Set-up of this chapter:
First, all necessary values are given in three tables in § 14.1.1. A drawing of the gas valve(s) and setting screws
is given in § 14.1.2 on the next page. In § 14.1.3 a general scheme, conform which the adjustments must be
carried out, is presented in table form. After that, in §§ 14.2 and 14.3, a thorough description is given of how to
proceed in cases
A
and
B
respectively. In § 14.4, finally, two main procedures used in the previous sections are
described in detail.
14.1.1
A
DJUSTMENT TABLES
Tables 2 and 3 see next page
Maximum fan speed has to be reduced to convert the water heater into a butane (B/P) appliance.
For adjustment use CO
2
tolerance of ± 0.1 % (for O
2
this is ± 0.2 %).
Table 1
gas type:
water heater type
load
output
nat.gas
G20
1
/ G25
1
propane
G31
1
butane (B/P)
G30
1, 3
S-WG 80-120
2
max. load
CO
2
(%)
9.0
10.3
10.4
O
2
(%)
4.8
5.2
5.3
min. load
CO
2
(%)
8.7
9.3
9.3
O
2
(%)
5.3
6.7
6.9
S-WG 150
2
max. load
CO
2
(%)
9.0
10.4
10.5
O
2
(%)
4.8
5.0
5.2
min. load
CO
2
(%)
8.7
9.3
9.3
O
2
(%)
5.3
6.7
6.9
S-WG 180
2
max. load
CO
2
(%)
9.0
10.5
10.6
O
2
(%)
4.8
4.7
4.9
min. load
CO
2
(%)
8.7
9.3
9.3
O
2
(%)
5.3
6.7
6.9
1
Cf. EN437
2
All values are measured without front panel.
3
Fan settings must be changed by altering parameter P4BD (display D8) (only by a skilled mechanic)
Summary of Contents for S-WG 100
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Page 14: ...E09 012 246 Manual S WG 15 750 Ltr ...
Page 33: ...E09 012 246 Manual S WG 34 7 4 Electrical schematics ...
Page 34: ...E09 012 246 Manual S WG 35 ...
Page 122: ...E09 012 246 Manual S WG 123 notes ...
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