MAX GAS 170-250 P
A
B
C
P
MODEL
MAX GAS 170 P
392
MAX GAS 170 PAB
452
MAX GAS 250 P
392
MAX GAS 250 PAB
452
Installation must be carried out in compliance with the local provisions
4,0
3,0
2,0
1,0
0,6
0,5
0,4
d=0,3
0,3
d=0,225
0,2
0,1
12
24
40
(a)
d = diam tre chambre de combustion
kW
PRELIMINARY CHECKS
Before starting up the boiler check the following: - gas type and feed pressure; - gas valves closed; - the seals in the pipe
fittings; - gas pipe breather and input pressure; - that the cable complies with the diagram and the phase and neutral
wires correspond; - that the burner shuts down when the boiler thermostat opens; - the seal of the boiler furnace which
prevents air from entering; - the seal on the flue-boiler pipe fitting; - the condition of the flue (sealed, free from blocka-
ge, etc ). If all these conditions are present, start the burner. The control device starts the motor to carry out prewashing
of the combustion chamber. During this prewash period (about 30 seconds) the device checks that air pressure is correct
via the air pressure switch. At the end, it supplies power to the transformer and opens the gas valves. The flame must be
lit and stabilize within 3 seconds, which is the device's safety time limit. Check to ensure the flame is lit before placing
any control instrument in the flue. Adjust and check the gas flow necessary for the boiler at the meter. Adjust the air
flow according to the gas flow to obtain correct combustion.
IMPORTANT ADVICE
All adjustable parts must be fixed by the installer after making adjustments. Check flue combustion after each adjusti-
ment. The CO
values must be approx. 9.7 (G20) 9.6 (G25) 11.7 (G30) 11.7 (G31) and the CO must be less than 75
2
ppm.
OVERALL DIMENSIONS
MAX GAS 170-250 PAB
A
B
P
A
B
C
D
D1
202
190
180
280
202
250
180
280
202
190
180
280
202
250
180
280
D = SHORT HEAD
d=0,7
d=0,6
d=0,5
d=0,4
70 100
190
480
STARTING-UP THE BURNER
420010385801 M ax G as 170 - 250 P/ P AB
D-D1
C
E
F
G
280
125
201 106/130 106/130 M8
280
125
201 106/130 106/130 M8
280
125
201 106/130 106/130 M8
280
125
201 106/130 106/130 M8
D1= LONG HEAD
The burners have been certified in combustion
d=0,8
chambers according to EN 676 standards.
Consult the burner manufacturer if the combu-
stion chamber of the boiler in which the burner
is to be installed has smaller dimensions.
L'installazione deve essere fatta in
conformità alle disposizioni locali.
1200
2450
pag.9
E
N
M
I
L
M
N
74
74
74
74
EN
190
153
I
O
P
80
104
80
104
80
104
80
104