Flowserve NRS 1-51 - Manual (Page 9)

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NRS 1-51
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Further conditions:
Water quality
(max. admissible electrical conductivity of the boiler water)
steam boiler plants / (pressurised) hot-water installations < 0000 µS/cm (at 5 °C)
Ambient temperature
when system is switched on: 0 ... 55 °C
during operation: –0 ... 55 °C
Transport temperature
–0 ... +80 °C (< 00 hours), defrosting time of the de-energized equipment before it can be put into
operation: 4 hours.
Storage temperature
–0 ... +70 °C, defrosting time of the de-energized equipment before it can be put into operation:
4 hours.
Relative humidity
max. 95%, no moisture condensation
Site altitude
max. 000 m
Approvals
EC Prototype approval PED Pressure Equipment Directive 97/3/EC
EN 95-, EN 953-09: Requirements made on
limiting equipment for boilers.
Functional safety IEC 6508 Functional safety of safety-related electrical/
SIL 3 electronic/programmable electronic systems
TÜV type approval VdTÜV Bulletin “Wasserstand 00” (= Water Level 00):
Requirements made on water level limiting & control equipment.
Type approval no. TÜV · SWB / SHWS · XX-XXX
(see name plate)
Technical Data
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