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Medical Gas Supply System
2.1.6
Loosely connect the supplied ø22 mm OD stub
pipe (Item 28, Figure 1) to the main pipeline isolation
valve (Item 8, Figure 1). Do not fit the O-ring seal until
after brazing.
2.1.7
Braze the pipework using the fluxless brazing
technique with nitrogen purge.
CAUTION! Ensure the brazed connection point is
isolated from any other pipeline source of supply.
2.1.8
Undo the securing nuts on the stub pipes and
insert the O-ring supplied into the connection grooves
and tighten.
2.1.9
The pipe work should be secured to the wall using
Munsen rings (not supplied). It would be recommended
to fit the first pipe support to the supplied ø22 mm OD
stub pipe (Item 28, Figure 1). The next support should
typically be fitted within 2 m of the first support.
2.1.10 The ø28 mm exhaust line (Item 26, Figure 1) shall
be brazed using fluxless brazing technique with nitrogen
purge.
2.1.11 The ø12 mm exhaust line (Item 27, Figure 1) shall
be brazed using fluxless brazing technique with nitrogen
purge.
CAUTION! The ø28 mm exhaust line (Item 26,
Figure 1) and ø12 mm exhaust line (Item 27, Figure 1)
needs to be piped away from the manifold room to a
safe location to prevent buildup of waste gas in an
enclosed space in the event of a regulator failure.
CAUTION! Do not reduce the diameter of the
pipe used for the exhaust line.
2.2
Installation Procedure for
Modular Manifold Header.
CAUTION! Ensure that all the header rails
supplied are the correct gas type. The gas ID is stamped
onto the flat section of the NRV caps.
2.2.1
If using the step down connector for VF type or
similar sized cylinders, connect to the manifold as shown
in Figure 5. Otherwise proceed to next step.
2.2.2
Connect the primary headers to the manifold or
drop down connector respectively, as shown in Figures 5
& 6. Ensure the header rail is level, mark the header rail
mounting holes.
NOTE - The primary headers have the shorter stub pipe.
See Figure 5.
2.2.3
Disconnect the header rail. Drill the previously
marked holes and fit the appropriate wall fixings.
4109992459.00
2.2.4
Reconnect the manifold header as shown in
Figure 5 and secure to the wall using the No. 10 pan
head supplied with the kit.
CAUTION! Supplied fixings are for use with solid
masonry type walls only. Typical extension bracket is 2.5
kg per side.
2.2.5
If additional headers are to be installed, remove
the 3/8" BSP blanking plug and bonded seal from the
end of the primary header block (shown in Figure 5)
and fit 3/8" x 5/8" BSP fitting (supplied with secondary
headers, shown in Figure 5) complete with O-ring seals
for connection of the extension header. Fit M6 fastener,
nut and washer as shown in Figure 6 to secure between
header rails.
2.2.6
Each header kit greater than 5 inlets is shipped
with an appropriate number of header brackets.
Position brackets against wall and on bottom side of
header as shown in Figure 5. Attach bracket to wall using
appropriate anchors (by others). 3/8" diameter anchors
are recommended.
2.2.7
Assemble the U-bolt and bracket hardware as
shown in Figure 5. Tighten the U-bolt nuts.
2.2.8
Additional header extensions may be attached
end to end, if required.
2.2.9
Install the large nut and plug on end of last
header extension. Tighten the large nut.
Figure 5 - Manifold Header Installation.
Header Bracket
12
U-Bolt
Header
Assembly
Flange Nuts
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