Honeywell SM150, Installation Instructions Manual, Page: 5 / 24

Honeywell GmbH 5 MU1H-1367GE23 R1116
GB
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 instructions. Any
other use will not be considered to comply with
requirements 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
Diaphragm safety valves of this type are directacting safety
valves in which the disc is pushed up by the pressure from the
system against a spring which is holding the valve closed. If
the opening force exceeds the force exerted by the spring,
then the valve disc is lifted off the valve seat and the valve
discharges the medium. In accordance with the requirements
of the standard, the full discharge capacity of the valve will be
achieved when the system pressure climbs to no more than
10% above the set pressure of the valve. Full shutoff must be
achieved if the system pressure falls to below 80% of the
nominal set pressure of the valve. For valves rated up to 3.0
bar, the closing pressure can be taken as 0.6 bar minimum.
3. Application
The membrane safety valve is only suitable to drain drinking
water from closed hot drinking water systems according to
DIN 1988 and DIN 4753-1 for protection against exceeding
pressure
4. Technical data
5. Scope of delivery
The safety valve comprises:
• Angled housing
• Adjustment spring
• Diaphragm
• Security cap with part label
6. Options
7. Assembly
7.1. Installations Guidelines
• Safety valve must be installed in the cold water supply
pipework before the water heater
• The installation must be carried out so that:
- There are no shutoff valves or fittings, narrowing of the
pipework or strainers between the water heater and the
safety valve
- Good access is provided for service and maintenance
- that the safety valve is positioned above the heat
generator
- that between the safety valve and heat exchanger a
max. 1 m long straight connection line with the size of
the inlet diameter is installed
• The safety valve must be mounted so that in its installed
condition no external forces act on it
• The discharge line must be performed to the size of the
safety valve outlet diameter and may not have more than
2 elbows and or be longer than 2m
• The discharge line must be installed with an incline
Medium Water
Installation position Horizontal with safety cap pointing up
Opening pressure Factory preset to 6.0, 8.0 or 10.0 bar
Subsequent alteration of the setting is
not permitted and is impossible without
destroying the security cap
Operating
temperature Max. 95 °C
Connection size Internal thread on inlet
1
/
2
",
3
/
4
",
Internal thread on outlet
3
/
4
", 1"
Valve size is defined by the size of the
inlet connection
OS.-No. Set
pressure Connection size
Inlet Connection
size Outlet
SM150- 1/2A 6,0 bar Rp
1
/
2
" IG Rp
3
/
4
" IG
SM150- 1/2B 8,0 bar Rp
1
/
2
" IG Rp
3
/
4
" IG
SM150- 1/2C 10,0 bar Rp
1
/
2
" IG Rp
3
/
4
" IG
SM150- 3/4A 6,0 bar Rp
3
/
4
" IG Rp1" IG
SM150- 3/4B 8,0 bar Rp
3
/
4
" IG Rp1" IG
SM150- 3/4C 10,0 bar Rp
3
/
4
" IG Rp1" IG