Functional Description; Technical Data - Honeywell SG150 Notice De Montage

1. Safety Guidelines
1. Follow the installation instructions.
2. Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
3. Note that the appliance is exclusively for use in the
applications detailed in these installation instruc-
tions. Any other use will not be considered to comply
with requirements and would invalidate the
warranty.
4. Please take note that any assembly, commis-
sioning, servicing and adjustment work may only be
carried out by authorized persons.
5. Immediately rectify any malfunctions which may
influence safety.

2. Functional description

Safety groups of this type combine pressure reducing
valve (only SG150D), check valve, shutoff valve, test
point and diaphragm type safety valves in one appli-
ance.
Flow first passes through the pressure reducing valve
which operates on a force equalising system whereby
the force of a diaphragm operates against the force of
an adjustment spring. The inlet pressure has no influ-
ence on either opening or closing of the valve and
therefore inlet pressure fluctuations have no influence
on the outlet pressure. The check valve has a movable
valve disc which pushes against a spring when flow
occurs.
The downstream safety valve is a direct operating
safety valve. That is, the opening force operates
against the force of a spring.
The shutoff valve enable the check valve to be
checked and serviced.
3. Application
For closed hot water storage units up to 200 litres
according to DIN 4753 Part 1 and DIN 1988. Tested to
TRD 721 for 1.0 to 10.0 bar pressure range.
Medium Water
Inlet pressure Max. 16 bar (SG150D only)
Outlet pressure 1.5 - 6 bar
Operating pressure Maximum at least below 20 %
opening pressure of safety
MU1H-1355GE23 R0907
GB

4. Technical data

Installation position
Opening pressure
Operating temperature Max. 40 °C
Minimum pressure drop 1 bar
Connection size
5. Scope of delivery
The safety group comprises:
• Housing with test socket G
• Connections (versions AA, AB and AC)
• Shutoff valve
• Complete pressure reducer (only with SG150D)
with fine screen (mesh opening 0.16 mm) and clear
sighted strainer cup
• Check valve cartridge
• Approved safety valve exchange insert
• Drain connector
• Insulation shells
• Pressure gauge optional
6. Options
SG150- ... AA = With threaded male connections,
6.0 bar
SG150- ... AB = With threaded male connections,
8.0 bar
SG150- ... AC = With threaded male connections,
10.0 bar
SG150- ... EA = Without fittings, set pressure 6.0 bar
SG150- ... EB = Without fittings, set pressure 8.0 bar
SG150- ... EC = Without fittings, set pressure 10.0 bar
SG150D- ... AA =With threaded male connections,
6.0 bar
SG150D- ... AB =With threaded male connections,
8.0 bar
SG150D- ... AC =With threaded male connections,
10.0 bar
SG150D- ... EA =Without fittings, set pressure 6.0 bar
SG150D- ... EB =Without fittings, set pressure 8.0 bar
SG150D- ... EC =Without fittings, set pressure 10.0 bar
8
Horizontal and vertical
Set by manufacturer at 6.0,
8.0 or 10.0 bar
Subsequent alteration of the
setting is not permitted and is
impossible without
destroying the security cap
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Honeywell GmbH