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%XPANSION
VESSEL
0RESSUREAND
TEMPERATURE
RELIEFVALVE
#ONTROLHIGH
LIMITTHERMOSTAT
0RIMARY
RETURN
$ISCHARGE
PIPE
4UNDISH
)MMERSION
-IN
0RIMARY
FLOW
!NTIVAC
RELIEFVALVE
#OMBINATIONINLET
VALVESET
-AINSPRESSURE
COLDCONNECTION
TOTHEAPPLIANCEAND
PRESSUREGAUGETEST
POINT
"ALANCED
COLDSUPPLY
BAR
IFREQUIRED
-AINS
PRESSURE
COLDSUPPPLY
%XPANSIONRELIEF
DISCHARGE
TORUNVERTICALLYASFAR
ASPRACTICAL
XSTREAM INDIRECT
Basic Appliance - see Figure 2
1. Anti vacuum valve
2. Temperature and Pressure relief valve
3. 1¾” x 3kW emergency immersion heater
(incalloy) complete with control and
overheat thermostat
4. 22mm copper - for connection to the
primary return.
5. ½”BSP (M) for connection to the potable
expansion vessel
6. Pocket for control/high limit thermostat
7. 22mm copper - for connection to the
primary flow
8. 22mm copper - for connection to the 1½
bar cold water feed from the combination
inlet group
9. ½” BSP (F) connection for drain valve (not
supplied)
10. 22mm copper - connection for hot water
supply
Component kit supplied separately:-
1. Combination valve incorporating pressure
reducing valve, strainer, cold water
connections, expansion relief valve and
check valve
2. Potable water expansion vessel
3. Tundish
4. 2 port motorised valve
5. Control/overheat thermostat
6. Installation instructions
Page 6
SYSTEM DESIGN
