Boiler components Fig. 15
1. Chimney flue
2. Domestic hot water outlet
3. Central heating return
4. Central heating flow pipe
5. Inner ring-shaped domestic hot water tank
6. Sprayed-on polyurethane foam insulation
7. Flue pipes
8. Baffles
9. External body containing central heating circuit
10. Burner chamber disk
11. Boiler drain
12. Combustion chamber
13. Boiler base
14. Burner flame holder
15. Burner chamber cap
16. Burner chamber door
17. Thermometer / boiler thermostat bulb
18. Front
19. Control thermostat 60/90 °C
20. Manual reset safety thermostat 103 °C
21. Casing top
22. Domestic cold water flow pipe
23. Flue spillage thermostat (TTB)
24. Chimney reducing adapter
5
DESCRIPTION
6
TECHNICAL SPECIFICATION
24
18
2
6
7
8
11
17
16
20
21
19
22
1
10
4
3
23
12
5
15
14
13
9
9
6.1
EFFECTIVE DIMENSIONS
The units are delivered fully assembled, tested and packed on a timber
base with shockproof edges and protected by heat-shrunk plastic film.
On reception and after unpacking, check the equipment for damage.
For transport purposes, refer to the weights and dimensions given
opposite.
6.2
MAXIMUM OPERATING CONDITIONS
Maximum service pressure
(tank full of water)
- Primary circuit: 3 bar
- Secondary circuit: 10 bar
Test pressure
(tank full of water)
- Primary circuit: 4.5 bar
- Secondary circuit: 13 bar
Operating temperature
- Maximum temperature: 90° C
569
C
200
D
160
B
542
125
A
Fig. 16: Effective dimensions
Dimensions
ALFA G
ALFA GP
A
1363
1363
B
130
130
C
685
685
D
390
390
Kg
143
143
