Water Connections - Heatrae Sadia PremierPlus Installation And User Manual

To hot outlets
Boost element/
control housing
(PP120E to PP300E
models only)
Element/
controls
housing
Primary return
Primary ow
NOTE: Primary heating coil
tted on PP100B to PP300B
models only
Figure 7: Typical installation schematic (not to scale)

6.2 Water connections

WARNING
` Under no circumstances should the
factory
relief valve be removed other than
by a competent person. To do so will
invalidate any guarantee or claim.
` The cold water combination valve
assembly must be fitted on the mains
water supply to the cylinder.
` No control or safety valves should be
tampered with or used for any other
purpose.
` The discharge pipe should not be
blocked or used for any other purpose.
` The tundish should not be located
adjacent to any electrical components.
Refer to the installation schematic (fig 7 above) for
details on the pipework layout. Specific details for the
discharge pipework layout is also provided in figure 10
on page 18
12
Balanced cold
T&P relief Expansion
water connection
valve vessel
(if required)
Secondary return
(if required)
use swept tee
Drain cock
Inlet
(not supplied)
fitted temperature/pressure
Cold water
Isolating valve
combination
(not supplied)
valve
Mains water
Discharge
Tundish
pipe
All pipe fittings are made via 22mm compression
`
fittings directly to the unit (nuts and olives
supplied). The fittings are also threaded 3/4" BSP
male parallel should threaded pipes connections
be required.
` A stopcock
incorporated into the cold water supply to enable
the cylinder to be isolated from the mains supply
for maintenance or servicing..
` A suitable draining tap should be installed in the
cold water supply to the cylinder between the
expansion valve and the heater at as low a level as
possible.
` It is recommended that the outlet point of the
drain pipework be at least 1 metre below the level
of the heater (this can be achieved by attaching a
hose to the drain tap outlet spigot)
supply
or servicing valve should be