Grant Vortex Eco 15/21 - Air Supply for Boilers; Air Supply for Room Sealed Balanced Flue Boilers; Air Supply for Conventional Flue Boilers

15
Grant Vortex Eco Utility Oil Boilers
BOILER IN
ROOM
Conventional open flue
C
BOILER IN
COMPARTMENT
Conventional open flue
compartment ventilated from room
Conventional open flue
compartment ventilated from outside
C
C
D
D
E
BOILER IN
ROOM
Room sealed balanced flue
no ventilation required to room
BOILER IN
COMPARTMENT
Room sealed balanced flue
compartment ventilated from room
Room sealed balanced flue
compartment ventilated from outside
B
B
A
A
Fig. 8 - Air supply for room sealed balanced flue boilers
4 - GENERAL BOILER INFORMATION
Fig. 9 - Air supply for conventional flue boilers
15/21 kW
116 cm² (18 in²)
232 cm² (36 in²)
26/35 kW
198 cm² (31 in²)
396 cm² (62 in²)
Output
Vent A
Vent B
15/21 kW
116 cm² (18 in²)
232 cm² (36 in²)
348 cm² (54 in²)
26/35 kW
198 cm² (31 in²)
396 cm² (62 in²)
594 cm² (93 in²)
Output
Vent C
Vent D
Vent E
Air supply
4.6
See Figs. 8 and 9
A sufficient permanent air supply to the boiler should
be provided:
a For proper combustion of fuel and effective
discharge of combustion products to the open air.
b For the ventilation of any confined space in
which the boiler is installed to prevent
overheating of the boiler any equipment in and
near the boiler.
21/26 kW
143 cm² (23 in²)
286 cm² (46 in²)
429 cm² (69 in²)
21/26 kW
143 cm² (23 in²)
286 cm² (46 in²)