Start-Up; Maintenance; Disposal - Honeywell SM152 Installation Instructions Manual

2. Install the membrane safety valve
• 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.
• Installation in horizontal pipe with safety cap
pointing up
• Note flow direction
• Install without tension or bending stresses
3. Install discharge line
Risk of scalding through hot liquid escaping
from the discharge opening.
Route discharge line so that neither personal
injuries nor property damage can be caused by
discharged fluid.
The discharge opening is marked by an arrow
on the valve body
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. Start-up

1. Mount a warning sign readily visible near the
discharge line or on the safety valve with the
following 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
MU1H-1301GE23 R0615
GB

9. Maintenance

In accordance with DIN 1988, Part 8, the following
operations should be carried out regularly. A
planned maintenance scheme is recommended.
9.1. Inspection
To be carried out by an installation company or
the operator.
Frequency: every 6 month
Risk of scalding through hot liquid escaping
from the discharge opening.
Function check by verifying the response: While the
system is operating, briefly open the safety valve by
turning the cap. After closing the cap the valve must
close again the backed up water drain completely.
9.2. Maintenance
To be carried out by an installation company
Interval: once a year
Risk of scalding through hot liquid escaping
from the discharge opening.
If a malfunction is detected, a repair can be
attempted by opening and closing the cap several
times. A replacement is necessary if this action is
not successful.

10. Disposal

• Brass housing
• High grade synthetic material screw-in section
(for up to 6.0 bar set pressure) or brass (for set
pressures above 6.0 bar)
• High-quality synthetic material spring bonnet
• High grade synthetic material security cap
• High grade synthetic material venting knob
• Hot water resistant elastomer seal disc
• Hot water resistant elastomer diaphragm
• Spring steel adjustment spring
Observe the local requirements regarding
correct waste recycling/disposal!
6 Honeywell GmbH