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TEMPERATURE/PRESSURE RELIEF VALVE
This safety device is also pre-set at the factory and relieves before the temperature
reaches 100ºC. it is also a Pressure Relief Valve, and is pre-set to 4 bar.
IMMERSION HEATERS
These are 3kW 40V AC heaters and incorporates thermostat and a manually reset
cut-out which operates at 80ºC. They have incaloy elements to prolong their life
expectancy in aggressive water conditions.
LINE STRAINER
This is integral within the combination inlet group to reduce the likelihood of
contaminants fouling the valve seat.
TUNDISH
This is to allow the discharge from any Relief Valve to be seen. it must be fitted away
from any electrical devices. See page 10 for discharge pipework details.
Two immersion heaters are fitted to all direct models and one immersion heater is fitted
to the indirect models. Where it is intended that units are fitted to offpeak circuits,
then suitable controllers must be supplied. External wiring to the immersion heaters
must be in accordance with the relevant iEE Wiring Regulations and the circuit must
be protected by a suitable fuse and a double pole isolating switch.
SAFETY
The immersion heaters must be earthed and they should be isolated from the mains
before the cover is removed on every occasion. Replacement immersion heaters should
be obtained from Gledhill Water Storage Limited.
STOP
TAP
KITCHEN
COLD
TAP
PRV Pressure reducing Value
NRV Non Return Valve
ERV Expansion Relief Valve
ANTI-VACUUM VALVE
P&T
RELIEF
VALVE
TUNDISH
TO DRAIN
(All built into one
combination valve)
INSTALLATION
E
L
N
IMMERSION HEATER WIRING
COMBINATION VALVE
Page 11
THERMOSTAT
SAFETY
CUT-OUT
BALANCED
COLD OUTLETS
NRV
PRV
ERV
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