Related Manuals for GESTRA NRG 16-11
Summary of Contents for GESTRA NRG 16-11
- Page 1 GESTRA Steam Systems NRG 16-11 English NRG 17-11 NRG 19-11 NRG 111-11 Installation Instructions 818578-05 Level Electrode NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11...
- Page 2 NRG 111-11, optional for NRG 16-11, NRG 17-11, NRG 19-11 ..............15 Key ...............................16 Installation NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11, step 1 ..............17 NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11, step 2 ..............17 Attention ...............................17 Important notes ............................18...
- Page 3 NRG 16-11, NRG 17-11, NRG 19-11 .....................19 NRG 111-11 ............................20 Key ...............................21 Electrical Connection NRG 16-11, NRG 17-11, NRG 19-11 .....................22 NRG 111-11, optional for NRG 16-11, NRG 17-11, NRG 19-11 ..............22 Wiring diagram .............................23 Voltage table ............................24 Note ..............................24 Tools ..............................24 Commissioning Check wiring ............................
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Page 4: Usage For The Intended Purpose
Important Notes Usage for the intended purpose Use level electrodes NRG 16-11, NRG 17-11, NRG 19-11 and NRG 111-11 only in conjunction with level switch NRS 1-7 for low-level limiting (low level alarm). The equipment must not be used in explosion risk areas. -
Page 5: Scope Of Supply
1 Retaining ring 1 Installation manual Description NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11 The level electrode NRG 1...-11 detects the min. liquid level (low level alarm) in a steam boiler. The operation of the electrode is based on the conductivity measuring principle using the electrical... -
Page 6: Function
Level switch NRS 1-7. Two channel level limiter (redundancy) with periodic self-checking routine to EN 50156-1. Design NRG 16-11, NRG 17-11, NRG 19-11 Screwed ¾" BSP, DIN EN ISO 228-1 Electrical connection: Four pole connector, terminal box made from aluminium (optional) NRG 111-11 Screwed 1"... -
Page 7: Technical Data Nrg 16-11, Nrg 17-11, Nrg 19-11
NRG 16-11, NRG 17-11, NRG 19-11 Type approval TÜV· WB·05-354 EG 01 202 931-B-01-0077 Service pressure NRG 16-11: 32 bar at 238 °C NRG 17-11: 60 bar at 275 °C NRG 19-11: 100 bar at 311 °C Connection Screwed G ¾ A, to ISO 228 Materials Screw-in body: 1.4571, X6CrNiMoTi17-12-2... -
Page 8: Nrg 111-11
Technical Data – continued – NRG 111-11 Type approval TÜV· WB·05-354 EG 01 202 931-B-01-0077-01 Service pressure NRG 111-11: 180 barg (at 357 °C) Connection 1" BSP (to DIN EN ISO 228-1) Materials Screw-in body: 1.4529, X1NiCrMoCuN25-20-7 Measuring electrode 1.4122, X39CrMo17-1 Electrode rod: 1.4401, X5CrNiMo17-12-2 Electrode insulation: Special ceramic material Terminal box: 3.2161 G AISi8Cu3... -
Page 9: Name Plate / Marking
Technical Data – continued – Name plate / marking Equipment designation Betriebsanleitung beachten NRG 16-11 See installation instructions Voir instructions de montage C = 0,13 cm PN 40 1.4571 IP 65 32 bar (464psi) Pmax 238°C (460°F) TÜV . WB . 05-354 Tmax T amb = 70°C (158 °F) -
Page 10: Dimensions Nrg 16-11, Nrg 17-11, Nrg 19-11
Technical Data – continued – Dimensions NRG 16-11, NRG 17-11, NRG 19-11 ¾" BSP, DIN EN ISO 228-1 ¾" BSP, DIN EN ISO 228-1 Fig. 4 Fig. 5 NRG 17-11, NRG 19-11 without NRG 16-11 with measuring surface extension measuring surface extension... -
Page 11: Dimensions Nrg 16-11, Nrg 17-11, Nrg 19-11
Technical Data – continued – Dimensions NRG 16-11, NRG 17-11, NRG 19-11 – continued – GESTRA Steam Systems GESTRA b = 70 ¾" BSP, DIN EN ISO 228-1 Fig. 6 NRG 17-11, NRG 19-11 with terminal box made from aluminium (optional) -
Page 12: Dimensions Nrg 111-11
Technical Data – continued – Dimensions NRG 111-11 GESTRA Steam Systems GESTRA b = 70 1" BSP, DIN EN ISO 228-1 Fig. 7 NRG 111-11 with measuring surface extension... -
Page 13: Nrg 16-11, Nrg 17-11, Nrg 19-11, Nrg 111-11
Design NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11 Fig. 10 Fig. 8 Fig. 11 ∅ 75 ∅ 33 G¾A, ISO 228 G1A, ISO 228 RA 3,2 Fig. 9 Fig. 12... -
Page 14: Nrg 16-11, Nrg 17-11, Nrg 19-11
Functional Elements NRG 16-11, NRG 17-11, NRG 19-11 Fig. 13... -
Page 15: Nrg 111-11, Optional For Nrg 16-11, Nrg 17-11, Nrg 19-11
Functional Elements – continued – NRG 111-11, optional for NRG 16-11, NRG 17-11, NRG 19-11 GESTRA SteamSystem s GESTRA j k l Fig. 14 Fig. 15... - Page 16 Design / Functional Elements – continued – Measuring electrode Bore Spring Electrode tip Grub screw Disk (Measuring surface extension) Retaining ring Gasket 27 x 32, form D, DIN 7603, 1.4301 bright annealed Seating surface Electrode thread Thermal insulation, provided on site, d = 20 mm (outside of thermal insulation of steam generating unit) Screw M 4 Upper part of terminal box...
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Page 17: Nrg 16-11, Nrg 17-11, Nrg 19-11, Nrg 111-11, Step 1
® 4. Screw level electrode into threads of flange provided on vessel and tighten with a 36/41 mm ring spanner. The torque required is 160 Nm when cold (NRG 16-11, NRG 17-11, NRG 19-11) or 475 Nm (NRG 111-11). Attention The seating surfaces and threads on the vessel and mounting flange must be accurately machined, Fig. -
Page 18: Important Notes
45° and that the length of the electrode rod is limited to 1000 mm. Fig. 17 If the electrode is installed outdoor, it must be provided with a weather-proof cover supplied by GESTRA. As an alternative the level electrode can be equipped with a terminal box made from aluminium. -
Page 19: Nrg 16-11, Nrg 17-11, Nrg 19-11
Examples of Installation NRG 16-11, NRG 17-11, NRG 19-11 ¾" BSP DN 50 ≥14 ≤ 90° ∅ 20 Fig. 16 Fig. 17 ¾" BSP ¾" BSP ¾" BSP ≥ DN 20 DN 100 24.5 24.5 ≥ ≥ DN 20 ≤... -
Page 20: Nrg 111-11
Examples of Installation – continued – NRG 111-11 1" BSP DN 50 ≥14 ≤ 90° Fig. 21 Fig. 20 ∅ 20 1" BSP ≥ DN 20 ≥ ≥ DN 20 Fig. 22 ≥ DN 20... - Page 21 Flange PN 40, PN 63, PN 160, DN 50, DIN EN 1092-01 (single electrode) Flange PN 40, PN 63, PN 160, DN 100, DIN EN 1092-01 (electrode combination) GESTRA hat flange PN 320, DN 50, DIN EN 1092-01 (NRG 111-11) For the approval of the boiler standpipe the relevant regulations must be considered.
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Page 22: Nrg 16-11, Nrg 17-11, Nrg 19-11
10. Put upper part of the terminal box onto the level electrode and fix it firmly with screw NRG 111-11, optional for NRG 16-11, NRG 17-11, NRG 19-11 Electrical connection via terminal box made from aluminium Note that screened four-core cable, e. g. I-Y(St)Y 2 x 2 x 0.8 or LIYCY 4 x 0.5 mm is required for wiring to the electrode. -
Page 23: Wiring Diagram
Electrical Connection – continued – Wiring diagram LW / HW NRG 1...-1X 10 11 12 9 Fig. 25 Terminal box made from aluminium NRG 16-11 NRG 16-11 NRG 17-11 NRG 17-11 NRG 19-11 Fig. 23 Fig. 26 NRG 19-11 NRG 111-11... -
Page 24: Voltage Table
Electrical Connection – continued – Voltage table Use this voltage table as a reference when checking whether the level electrode is submerged or if there is a malfunction. Please take the wiring diagram of the electrode NRS 1-7 into account. Fig. -
Page 25: Low-Level Limiter
Operation Low-level limiter Operation in combination with controller NRS 1-7 in steam and pressurised hot water plants to TRD 401, TRD 602, TRD 604, EN 12952, EN 12953 or other national regulations. Note Should malfunctions occur during the commissioning procedure refer to chapter “Operational Malfunctions”... -
Page 26: Danger
For details on the conformity of our equipment according to the European Directives see our Declaration of Conformity or our Declaration of Manufacturer. The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under www.gestra./de/documents or can be requested from us. - Page 27 For your notes...
- Page 28 Agencies all over the world: www.gestra.de GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-mail info@de.gestra.com www.gestra.de 818578-05/02-2014cm (803965-14) · GESTRA AG · Bremen · Printed in Germany...
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