Flue Installation; Minimum Clearances - BENSON 30 Installation And Operating Manual

2. Installation.
I
t is strongly advised that the installer reads Section 1 of
this manual prior to starting any installation work. It is a
requirement that only qualified and competent personnel
undertake installation, commissioning, and servicing.
Warning
Always ensure that the appropriate personal protective
equipment is used.
2.1 Packaging/siting
The heater will usually be supplied wrapped in heavy gauge
polythene, non assembled parts will be supplied separately.
Prior to installation, the assembly of the heater should be
completed, it is advisable that this is undertaken in the area
where the heater is scheduled to be sited.
Caution
It is strongly advised that when positioning the heater the
lifting eyes are used, thereby reducing the risk of inadvertent
damage being occasioned to the heater.
2.2 Flooring
The heater must be installed on a level non-combustible
surface capable of supporting the weight of the heater and
any ancillary equipment.
2.3

Minimum clearances

The following minimum clearances (in millimeters) are
recommended when installing the heater.
Model Front
30 - 40
500
60 - 85 500
120 - 135 600
180 600
205
900
235 - 300 900
375
900
Doc No. 20-45-159 Page 22 of 60
Rear LHS RHS
700 150 150
1000 150 150
1200 150 150
1500 150 150
1500 150 150
2000 400 400
2000 500 500
2.4 Assembly
The following sub-assembly parts should be assembled to
allow installation to continue.
(a) Vertical Nozzled Models
For free blowing applications it will be necessary to complete
the final assembly before continuing with the installation. The
bonnet top with nozzle spigots should be attached to the
heater and secured. The nozzles should then be pushed home
on the spigots and positioned to provide the desired airflow.
Ensure louvres are adjusted outwards and ensure blades are
not resonating. The nozzles should be securely fixed in their
desired position on completion of commissioning.
(b) Horizontal Nozzled Models
Remove packaging and secure the 90° Duct Outlet to the
outlet on the heater using the bolts supplied.
Secure the nozzle spigot plate to the duct outlet using the
bolts and prevailing torque nuts provided. Fit the securing
brackets to each of the outlet nozzles, and lift the complete
heater assembly and position on the pre-sited purpose built
supports. Finish off the assembly by fitting and securing the
outlet nozzles to the spigots by way of previously fitted
brackets.
2.5

Flue Installation

An integral flue spigot is fitted to all Cabinet Heaters thereby
allowing the flue to connect directly to the heater. The design
of the flue must ensure that it can be disconnected to allow
for cleaning and servicing, furthermore, all of the flue section
joint sockets must face upwards, and the seal between the
sections achieved through mechanical joints or through the
use of approved caulking string and grout.
Caution
It is strongly advised that BS 5854 and BS 5440 parts 1 and 2
are referred to. See also terminal details on page 15 & 16
Where condensation is likely to be a problem provision should
be made preferably at the design stage (see section 1.13)
2.6 Gas Installation/connection
Service pipework must terminate at an approved gas cock,
and be adjacent to the position of the heater. The connection
to the heater can be made by way of either an approved flexi-
ble coupling, or rigid connection. Threaded connections must
comply with ISO288/1 of ISO 7/1, further information concern-