Safety Guidelines; Description Of Function; Technical Data - Honeywell SG150 AA Series Installation Instructions Manual

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 appli-
cations detailed in these installation instructions. Any
other use will not be considered to comply with require-
ments and would invalidate the warranty.
4. Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried out by
authorized persons.
5. Immediately rectify any malfunctions which may influence
safety.

2. Description of function

Safety groups of this type combine pressure reducing valve
(only SG150D), check valve, shutoff valve, test point and
diaphragm type safety valves in one appliance.
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 influence on either opening
or closing of the valve and therefore inlet pressure fluctua-
tions 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
Outlet pressure 1.5 - 6 bar
Operating pressureMaximum at least below 20 % opening
pressure of safety
Honeywell GmbH
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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MU1H-1355GE23 R1012