-24-
3 PORT DIVERTING VALVE ASSEMBLY -
CHILLED WATER 96800406 and 407
LPHW 96800415 and 417
These valves are supplied to control the flow of chilled and low pressure hot water onto CWR units.
The valve by-pass port (A) is fitted with an orifice disc to minimise flow fluctuations when the unit is in dead zone and
the valve goes to by-pass.
TYPE
Chilled Water Chilled Water
LPHW
LPHW
UNIT
25
45 - 85
25 - 45
65 - 85
KIT No.
96800406
96800407
96800415
96800417
ITEM
QTY DESCRIPTION
1
1
Valve assembly
2
2
Copper extension piece
3
3
Tie wrap
These instructions assume that the unit is installed when the valve assembly is being fitted.
ISOLATE THE SYSTEM PRIOR TO INSTALLATION OF THIS KIT
1
Remove the side panels and drain tray from the unit to expose the coil headers.
2
Cut the cap off the appropriate outlet header stub leaving a length of 45mm, (see Fig. 1).
Similarly cut off the 90
/
elbow connecting the inlet pipe to the inlet header stub again leaving
45mm. De-burr both cut pipes.
NOTE:
For early units fitted with headers which have shorter stubs, cut the cap and elbow off
leaving a length of 30mm. Braze to these stubs the swaged copper pipes supplied
loose to re-establish the 45mm length, (see Fig. 2).
.
3
Offer the valve assembly up to the stubs on the inlet and outlet headers with the valve motor uppermost. Tighten the
valve compression nuts.
4
Feed the valve motor leads through the rectangular hole at the air on end of the unit into the electrics compartment,
(Fig. 3). Secure along its length with tie wraps. Connect the valve motor leads as shown in Fig. 4.
Fig. 3.
Fig. 4.
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