REMEHA Avanta Range 24c Installation & Service Manual page 31

A
A
fi g. 39 Check the gas/air ratio control – set to full load – gas/air ratio
adjustment A on gas block
112952.LT.GB.W7H.042

Combustion checking/setting must be carried out by a com-
petent person. It must not be carried out unless that person is
equipped with a combustion analyser which conforms to the
R relevant British Standards.

When checking/setting the air/gas ratio setting in full load it
may be necessary to run water through the domestic hot water
circuit to allow time for this part of the procedure, this will pre-
vent the boiler from cycling on low heating demands (Combi
boilers only).
Setting values O
Boiler type
18s
24s
30s
24c
28c
35c
39c
table 05
Setting values O
Boiler type
18s
24s
30s
24c
28c
35c
39c
table 06
*) On forced full load, the 2
31
/CO for natural gas H / L
2 2
Fan speed (rpm)
Full load h3 *)
approx. 3500
approx. 4300
approx. 5200
approx. 4400
approx. 5500
approx. 6300
approx. 6700
Setting values full load CO
(front panel not fi tted)
/CO for LPG (propane)
2 2
Fan speed (rpm)
Full load h3 *)
Approx. 3300
approx. 4100
approx. 5000
approx. 4300
approx. 5200
approx. 5800
approx. 6500
Setting values full load CO
(front panel not fi tted)
nd digit indicates the operating code
O CO
2 2
% %
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
5.2 8.8
± 0.1 ± 0.1
and O
2 2
O CO
2 2
% %
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
5.1 10.5
± 0.1 ± 0.1
and O
2 2