ATMOS MULTI version 2002
Page 24
flexible hose connections available as an optional
extra from Atmos Heating Systems. The connection
to the expansion vessel utilises a ¾ female x ½ male
threaded adaptor and the washer provided must be
fitted internally. The other end has a 15mm
compression fitting.
Fit the filler loop from the cold water main to the
second 15mm pipe connection d, ensuring that the
loop is fitted in the right direction as indicated on
the arrow stamped on the non-return valve.
Fit the heating system safety valve into the ½"
BSPF connection, pointing in the direction shown
ready for connection into the discharge pipe. (fig
18)
7.7.Connecting the mains cold water.
Each Atmos Multi boiler is supplied with a mains
pressure kit comprising the following components:
q
UV3 manifold including pressure reducing valve
pre-set at 3.5 bar. (Altecnic)
q
½" Caleffi safety relief valve set at 6bar.
q
8 litre blue potable expansion vessel (Altecnic)
q
Expansion vessel mounting bracket.
q
22mm x 15mm compression reducing set.
q
Black plastic tundish. (Altecnic), and;
q
¼
"
BSPM drain cock.
The mains pressure kit must be assembled as shown
in fig 18 in the following manner:
Figure 18: Mains pressure kit assembly
q
Connect the UV3 manifold to the boilers15mm
cold water inlet supply pipe (colour coded blue),
using the 22mm x 15mm compression reducing set
supplied.
q
Connect the 22mm incoming cold water main
supply to the inlet of the UV3 combined 22mm stop
tap and pressure reducing valve.
q
Locate and fit the 6bar safety relief valve, by
push fitting into its fixing socket on the UV3
manifold. A small grub screw located in the side of
the manifold is provided to lock the valve in
position, by means of the Allen key provided.
q
The 22mm branch 'E' is provided for the cold
water system of the house, where equal hot and
cold water pressures are required. If this facility is
not required, the branch may be blanked off using
the blanking plug provided.
q
Locate and fit the supplied ¼" BSPM drain-off
cock to the manifold's socket 'G'. The fitting of this
drain off cock enables 90% of the water content of
the hot water tank to be drained.
q
Fix the Blue 8 litre potable expansion vessel
adjacent to the 'primary' heating expansion vessel
using the wall brackets provided.
q
Connect the potable expansion vessel's ¾" boss
to connection 'H' on the UV3 manifold using 15mm
Summary of Contents for Multi 24/80
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