Ambirad VISION VSO, Инструкция по сборке, установке и эксплуатации, Страница: 6 / 56

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1.5 Herringbone Systems (VSOUH).
The manifold system should be arranged to fall
slightly in the direction of the vacuum fan. This
ensures that any condensation formed in the
manifold on cold start and cool down is not
trapped or allowed to drain back into the heater
unit. This allows condensate to flow towards
the condensate trap located at the vacuum fan
end of the manifold system. (See figure 4a
below for condensate trap arrangement).
The manifold should be supported by chain,
stainless steel flexible wire, or other flexible
means from the roof structure to allow
movement caused by thermal expansion. For
100mm diameter manifold the maximum
distance between supports is 2.4m and 3.0m
for 150mm diameter
.
Flexible couplers (supplied by AmbiRad) must
be inserted within the manifold system to allow
linear expansion to take place and prevent
stress and strain on the system.
The exhaust flue should be adequately
supported from the building structure and
installed in accordance with the British
Standard Code of Practice BS 5440: Part
1:2000 – Installation and maintenance of flues
and ventilation for gas appliances of rated input
not exceeding 70kW net (1st, 2nd and 3rd
family gases)
A condensate trap assembly must be provided
at the end of the manifold system before the
hot gas vacuum fan.
The minimum depth of the condensate
collecting chamber shall be 305mm and the
minimum depth of the condensate drain pipe
‘U’ trap shall be 457mm deep. The end cap of
the collecting chamber to be fitted with a flush
flanged tank connector. Any protrusion to be
removed leaving the inside flush with end cap.
The end cap should be sealed with silicon
jointing compound and pop riveted in position.
All condensate drains from the flue collecting
chamber to the disposal point shall be
corrosion-resistant material of not less than
22mm internal diameter. Copper or copper
based alloy shall not be used for condensation
drains.
See reference BS 6896:2005.
Condensate drain pipes must be protected
against the effects of freezing.
The Type ‘0’ and Type ‘2’ vacuum fans have
bottom horizontal discharge with rectangular
connections (flanged on the type 0) and must be
mounted in that position by means of the fan
support stool onto a suitable platform or
brackets fixed to the building structure.
For details of the fan outlet fixing holes see
below.
30
5.0
457.
0
Figure 4a.
Condensate
Trap Arrangement
Figure 4c. Type ‘O’ Fan Outlet Dimensions
Figure 4d.
Type 2 Fan
Outlet Dimensions
190 213
Figure 4b. Collecting Chamber Arrangement
The manifold must be supported either
side of the flexible coupler.