Everflo EDS120, Руководство по установке

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04
EVERFLO STAINLESS uV
uNVENTEd HOT WATER CyLINdERS
SITTING THE uNIT
EVERFLO STAINLESS uV can supply outlets above it or at some
distance from it. Site the unit to minimise “dead leg” distances,
especially to the point of most frequent use.
Outlets above the EVERFLO STAINLESS uV will reduce the outlet
pressure available by 0.1 bar for every 1m of height difference. The
unit should be protected from frost. Particular care is needed if
sitting in a garage or outbuilding. All exposed pipework should be
insulated. EVERFLO STAINLESS uV must be installed VERTICALLy
on a flat base capable of supporting the weight of the cylinder
when full. See technical specification section (page 27-28) for
weights. The minimum recommended cupboard size is 650mm
square.
NOTES:
The pressure reducing
valve, non-return valve and
expansion relief valve are
combined together in the
inlet control set.
On 60 – 180 litre sizes there
is no dedicated secondary
return boss and the
secondary return circuit
should be tee’d into the cold
feed pipe just above the
drain elbow.
SCHEMATIC dIAGRAM
Access for maintenance of the valves should be considered.
Consideration should be given to position of discharge pipes
(tundish), drain valves - shall be positioned away from electrical
components.
The immersion heaters are 375mm long and care should be taken
to ensure that they can be withdrawn for servicing if required.
The discharge pipework from the safety valves should fall
continuously and terminate safely.
IMMERSION
HEATER
COLD
MAIN
ISOLATING
VALVE
PRESSURE
REDUCING
VALVE
NON
RETURN
VALVE
EXPANSION
RELIEF
VALVE
TUNDISH
TEMPERATURE
& PRESSURE
RELIEF VALVE
BALANCED
COLD
CONNECTION
COLD
INLET VIA
DRAIN
NON
RETURN
VALVE
BRONZE
PUMP
SECONDARY RETURN CIRCUIT
( 210, 250 & 300 L SIZES )
DUAL
STAT
2 PORT
VALVE
BOILER
FLOW
BOILER
RETURN
HOT OUTLET
EXPANSION
VESSEL
WITH WALL
BRACKET