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4
5 Fan assembly
7 Health & safety
8 Installation - suggested
methods of heater suspension
6 Vision Compact herringbone
gas radiant tube heaters
!
Note For both horizontal and inclined
mounting the fan assembly must be perfectly
vertical with the fan outlet facing upwards.
For unflued heaters a fan baffle must be
attached to the fan outlet.
For herringbone heaters refer to the relevant
information leaflet (GB/HB/134/0402).
A herringbone system allows several Vision
Compact heaters to be operated by one
combustion fan. This has the benefit of only
one building penetration being required
when fluing the products of combustion.
Ambi-Rad Limited cannot be responsible for
ensuring that all site safety procedures are
adhered to during assembly and installation.
Sole liability rests with the installer.
Attachment to the heater support lugs
should be made by either a ‘speed link’, D
shackle, nut bolt and large washers, or in
the case of drop rods, a closed formed hook.
The hanging attachments to overhead
steelwork etc. must be purpose made to
good sound engineering practice or of a
proprietary type fixing. They must be
adequately fixed and designed to carry the
whole weight of the heater.
In the event of suitable roof steelwork not
being available, additional steelwork should
be fitted to enable vertical hangers to be
used for suspending the heaters.
If there are any doubts as to the strength or
suitability of roof steelwork to which
heaters are to be suspended, please refer to
consultant / architect / owner of the
building.
The recommended minimum and preferred
mounting heights, along with the
recommended clearance to combustibles for
the Vision Compact range of heaters is
shown in the table below.
Clearances 1
D
D
C
Clearances 2
E
Forchainlengths
seetablebelow
Clearances 3
B
F
A
F
Model
Required angle
Additional chain length (mm)
All models
30˚
575
45˚
730
Model
Horizontal (m)
Inclined 30˚ (m)
Inclined 45˚ (m)
V
C20
5.2
4.7
4.7
VC12
4.3
3.9
3.9
Note Minimum recommended mounting heights
Clearance distances
Model
CB20
CB12
A. Above reflector (fan unflued)
570
570
B. Above burner/fan assembly unflued
570
570
C & E Beneath tubes
1600
1370
D. To the sides
1050
670
B. Above reflector and fan outlet flued
400
400
F. From ends
640
640
All dimensions are in millimetres