2
BOILER DIMENSIONS AND CONNECTIONS
(Optional water and gas header kit and RS air duct connector (E320 & E400 only) tted)
Note. E320 Model shown
3
BOILER CLEARANCES
The minimum dimensions as indicated must be respected to
ensure good access around the boiler.
Recommended minimum clearances are as follows.
Rear: 1000mm or adequate space from the rear of the jacket to
make the ue connections and access to the ue sample point,
drain connection, ue and any safety or control devices.
Left Side: 450mm Right Side: 450mm
Front: 600mm; except, access doors may be closer, but
not less than 200mm and 600mm must still be available for
service across the width of the boiler.
Top: 500mm.
4
VENTILATION
The ventilation requirements of these boilers are dependant on
the type of ue system used, and their heat input. All vents must
be permanent with no means of closing, and positioned to avoid
accidental obstructions by blocking or ooding.
Detail reference should be made to BS. 6644 for inputs between
70kW and 1.8MW (net). In IE refer to the current edition of I.S.820.
The following notes are for general guidance only:
Dust contamination in the combustion air may cause blockage
of the burner slots. Unless the boiler room provides a dust free
environment then direct connection of the air intake via ducting to
clean outside air should be used.
IMPORTANT NOTE.
Ensure blue air inlet cap is removed before rst igniton or
before connection to the air inlet ducting (as shown).
If combustion air is drawn from within the boiler room, ensure
no dust or airborne debris can be ingested into the appliance.
Dusty concrete ooring should be sealed to reduce the
presence of dust.
The temperature within a boiler room shall not exceed 25
o
C within 100 mm
of the oor, 32
o
C at mid height and 40
o
C within 100 mm of the ceiling.
Open Flued Installations
If ventilation is to be provided by means of permanent high and low
vents communicating direct with outside air, then reference can be
made to the sizes below. For other ventilation options refer to BS.
6644. In IE refer to the current edition of I.S.820.
Required area (cm
2
) per kW of total rated input (net)
Boiler Room Enclosure
Low level (inlet) 4 10
High level (outlet) 2 5
Note: Where a boiler installation is to operate in summer months
(e.g. DHW) additional ventilation requirements are stated, if
operating for more than 50% of time (refer to BS6644).
Room Sealed Installations
A minimum of 2cm
2
free area per kW of net heat input at both high
and low level is required for boiler rooms. For enclosures refer to
BS6644.
Ensure blue air inlet
cap is removed before
rst ignition, or before
connection to the air
inlet ducting.
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