2.6 MOUNTING THE BOILER
2.7 VENTILATION
The ventilation requirements of these boilers is 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 obstruction by blocking or ooding.
30/30P, 40/40P, 60/60P
Detail reference should be made to BS. 5440 Pt. 2. In IE refer to
the current edition of I.S. 813.
The following notes are for general guidance only:
If installed as a room sealed appliance in a room or internal
space, then no purpose provided ventilation is required.
If installed as an open ued appliance in a room or internal space
then a permanent air vent is required. The sizes given below are for
vents directly communicating with outside air. For other situations
refer to BS. 5440 Pt. 2. In IE refer to the current edition of I.S. 813.
Boiler Size 30 & 30P 40 & 40P 60 & 60P
Minimum vent
free area (cm
2
)
117 167 269
If installed in a compartment, then permanent air vents are
required at high and low level. These vents may communicate
direct to outside air, or to a room/internal space. If to a room/
internal space, it must itself be adequately ventilated as above.
• Due care should be taken when lifting the boilers, with
respect to their weights, see Table 2 on Page 6. Also
refer to Section 1.4 Safe Handling.
1. Lift the boiler onto the wall mounting plate as shown.
Note: It is not necessary to hold the boiler at an angle
to engage the wall mounting plate.
2. Using the remaining coach screws, secure the bottom
of the boiler to the wall through the attached brackets.
IMPORTANT NOTE It is essential that these bolts be
tted prior to making up the ow and return connections to
the boiler to prevent the boiler becoming detached .
The temperature within the boiler room shall not exceed 25ºC within 100mm of the oor, 32ºC at mid height and 40ºC within 100mm
of the ceiling.
BOILERS 70kW AND OVER
80, 80P, 100, 100P, 120, 120P, 150 and multiple boiler
applications
Detail reference should be made to BS. 6644 and IGEM/UP/10
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:
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 and IGEM/UP/10. In IE refer to the current
edition of I.S.820.
80, 80P, 100, 100P, 120, 120P & 150
Open Flued Installations
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) and IGEM/UP/10.
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 and IGEM/UP/10.
Room Sealed Application - Min. Vent Free Area (cm
2
) Open Flue Application - Min. Vent Free Area (cm
2
)
To a room or internal space To outside Air To a room or internal space To Outside Air
Boiler Size 30 40 60 30 40 60 30 40 60 30 40 60
High Level 310 410 610 155 205 305 310 410 610 155 205 305
Low level 310 410 610 155 205 305 620 820 1220 310 410 610
Ventilation Requirements (not exceeding 70kW net Input) when installed in a compartment
BOILERS NOT EXCEEDING 70kW
17
Installation & Servicing
SECTION 2 - INSTALLATION
INSTALLATION
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