Honeywell SM150 Notice De Montage page 7

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:
o There are no shutoff valves or fittings, narrowing
of the pipework or strainers between the water
heater and the safety valve
o good access is provided for service and mainte-
nance
o that the safety valve is positioned above the heat
generator
o 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
7.2 Assembly instructions
The safety valve may not be overheated through
welding and soldering work on the system. Install
the safety valve only after these tasks are
completed.
1. Thoroughly flush pipework
2. Install the membrane safety valve
o Tighten the connections with max. 18 Nm when
joining. Cracks may form in the material when
tighten to strongly which may cause leaks in the
system.
o Installation in horizontal pipe with safety cap poin-
ting up
o Note flow direction
o Install without tension or bending stresses
3. Install discharge line
Risk of scaling through hot liquid escaping from
the discharge opening.
Route discharge line so that neither personal inju-
ries nor property damage can be caused by
discharged fluid.
The discharge opening is marked by an arrow on
the valve body
Honeywell GmbH
GB
4. Guide the outlet of the discharge line into a drain or
container which can accept the total content of the
system.
If there is a risk that the discharge line becomes
clogged or can freeze, interrupt the discharge
line, e.g. by a funnel. The discharge line of the
funnel must have twice the cross-section of the
safety valve intake
8. Commissioning
1. Mount a warning sign readily visible near the
discharge line or on the safety valve with the follo-
wing text:
While heating, water must escape from the
discharge line for safety reasons. Do not
close!
2. Make sure that all water connections are tight
3. We recommend flushing the supply line before
commissioning the plant
7 MU1H-1367GE23 R0609