GRUNDFOS DATA BOOKLET. Fire NKF. Grundfos fire systems. Fire pump sets with electrically and diesel-powered pumps according to DBI 251/CEA4001

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1 GRUNDFOS DATA BOOKLET Fire NKF Grundfos fire systems Fire pump sets with electrically and diesel-powered pumps according to DBI 21/CEA41

2 Contents Performance range Electrically powered pumps 3 Diesel-powered pumps 4 Product description Introduction DBI 21/CEA 41 standard Fire NKF pumps Controller Electric motor Other system components 6 Compressor 6 Scope of delivery 6 Commissioning 6 Identification 7 Fire pump set 7 Bare shaft pump 7 Pump characteristics 8 Duty range 8 Power rating 8 Curve charts ow to read the curve charts 9 Performance curves NKF 32- (2-pole/ 29 rpm) 1 NKF 4-2 (2-pole/ 29 rpm) 11 NKF - (2-pole/ 29 rpm) 12 NKF -2 (2-pole/ 29 rpm) 13 NKF 6- (2-pole/ 29 rpm) 14 NKF 8- (2-pole/ 29 rpm) NKF 8-2 (2-pole/ 29 rpm) 16 NKF 1- (2-pole/ 29 rpm) 17 NKF 12-2 (2-pole/ 29 rpm) 18 NKF -4 (4-pole/ 148 rpm) 19 NKF -4 ( 16 rpm) NKF -4 ( 17 rpm) 21 NKF -4 ( 18 rpm) 22 NKF - (4-pole/ 148 rpm) 23 NKF - ( 16 rpm) 24 NKF - ( 17 rpm) 2 NKF - ( 18 rpm) 26 2

3 Performance range Fire NKF Electrically powered pumps 2- and 4-pole 1 NKF 2 pole / 4 pole z Q [l/min] TM

4 Performance range Fire NKF Diesel-powered pumps min -1 NKF DIESEL min min min min min min min min min min min min min min Q [l/min] TM

Product description Fire NKF Introduction Grundfos Fire NKF fire pump sets are typically used in firefighting applications for supplying water to fire hose reels, fire hydrants or sprinkler systems.

Electric motor The electric motor is an MG or MMG motor complying with local standards for electric motors. As from 16 July 11, the motors used in Europe will be IE2 = EFF 1 motors.

5 Product description Fire NKF Introduction Grundfos Fire NKF fire pump sets are typically used in firefighting applications for supplying water to fire hose reels, fire hydrants or sprinkler systems. This data booklet covers fire pump sets with electrically and diesel-powered NKF end-suction pumps. Electric motor The electric motor is an MG or MMG motor complying with local standards for electric motors. As from 16 July 11, the motors used in Europe will be IE2 = EFF 1 motors. Designations Fire NKF is an NKF end-suction pump with coupling and motor or engine mounted on a common base frame. The fire pump set can be incorporated into a firefighting system. DBI 21/CEA 41 standard The products in this data booklet have been built to comply with the DBI guidelines 21/41 for sprinkler systems (design, installation and maintenance). Fire NKF pumps Grundfos NKF pumps according to DBI 21/41 are designed for the distribution of water in stationary sprinkler systems using water spray. They are operated in case of fire and during tests. Materials Requirements to pump materials according to DBI 21/ 41: Impeller and wear rings must be made of bronze. Wet parts such as shaft, washers and nuts must be made of stainless steel. Cast parts must be made of cast iron. Fig. 1 Fire NKF: An NKF end-suction pump with electric motor and controller mounted on a base frame Insulation class: F. Enclosure class: IP. The can operate continuously at full load at site elevation with rated output in accordance with ISO 346-1:1986. The pump is at full operational speed within seconds; the engine is capable of starting at a room temperature of C. GrA1719 Controller Grundfos offers a controller in a steel plate cabinet, suitable for wall mounting or free-standing installation. The controller complies with the standard DBI 21/ CEA41. The controller for pumps with electric motor can be mounted on the wall or on the base frame. The controller for diesel-powered pumps is always mounted on the base frame. Fig. 2 Fire NKF: An NKF end-suction pump with diesel engine and controller mounted on a base frame Each complete engine and pump unit is tested on the manufacturers test bed for at least 1. hours at rated flow rate, and the result is recorded on the test certificate. TM4 191

6 Product description Fire NKF Other system components Jockey pumps Grundfos CR pumps are used as jockey pumps, maintaining the water level in the pressure tank. Under normal conditions, the jockey pump is activated by the low-level switch in the pressure tank as a result of small leakages in the pipe systems filled with water. The jockey pump operates until it is deactivated by the highlevel switch. The jockey pump can also be activated in case one or more sprinklers are open, in order to maintain the water level in the pressure tank. Compressor The compressor can be set to manual or automatic operation by means of the selector switch. During automatic operation, the compressor is controlled by an external pressure switch, for example connected to the pressure tank. The compressor can be manually switched on and off. Scope of delivery A complete Fire NKF unit assembled and supplied from factory normally comprises these elements: a pump and motor mounted on a common base frame a standard coupling protected by a coupling guard a controller according to DBI 21/CEA41. Commissioning The installer should commission the complete firefighting system before handing it over to the plant manager on site. Many potential issues of the complete system must be tested before commissioning to ensure a satisfactory system performance and identify any damage during installation. Key components should be checked according to the descriptions in the respective installation and operating instructions. In addition, DBI 21/CEA41 stipulates that tests such as these should be carried out: pressure test of sprinkler circuits values of all measuring devices (air pressure, water level, etc.) to the system water flow to fire pumps test of alarm system and interface to municipal fire department. The installer should supply the plant manager with the following documents: Installation certificate, stating that the firefighting system has been installed according to DBI 21/ CEA41 requirements. A complete set of installation and operating instructions and system drawings with specification of all components for the plant manager and the owner of the system. 6

7 Product description Fire NKF Identification Fire pump set Bare shaft pump Type: part No. serial No. Fire NKF 8-2/27-E-F-X-D-B-A-B G Main Supply: 3X4V z impeller diameter: 27 Q: m /h : 112 m : kw n: 294 min IP G: 346 kg Made in Germany P TM Fig. 4 Example of nameplate Type key for pump TM Fig. 3 Example of nameplate Type key for fire pump set Example Fire NK F 8-2 /27 E F X D B A B Fire: Grundfos fire systems Type range NK Pump approved for firefighting Nominal diameter of discharge port 8 mm Pump housing size 2 mm Actual impeller diameter 27 mm Driver D: E: Electric motor, z Approval of pump G: EN Approval of fire pump set X: No approval Pipe connections D: DIN Control panel B: For mounting on base frame W: For wall mounting X: No panel Shaft seal A: BAQE Coupling A: Standard (NKF) B: Spacer (NKF) Example NKF 6 - /219 A -F -B -BAQE -G Type range NKF Nominal diameter of discharge port 6 mm Nominal impeller diameter mm Actual impeller diameter 219 mm Code for pump version A: NKF bare shaft pump A2: NKF basic version with spacer coupling Code for pipework connection F: DIN flange Code for materials B: EN-GJL-2 with bronze impeller Code for mechanical shaft seal and rubber pump parts Approval of pump G: EN 7

8 Product description Fire NKF Pump characteristics DBI 21/41 focuses strongly on the instabilities. This is due to sprinkler systems consisting of long and different pipe circuits. Two instable pumps may cause vibrations or breakdown. If the characteristic is instable, the instability must not exceed %. See examples of instable (fig. ) and stable (fig. 6) characteristics below. Duty range The maximum permissible flow rate is defined on basis of the pump NPS curves. The flow rate must not exceed the flow rate found at m NPS. 6 6 ø41 11 kw ø334 ø3 68 % 7 % 72 % 74 % 74.8 % NK 8-3 z, n = 14 min -1 ISO 996 Annex A ø ø % 74 % 3 4 kw 3 28 ø % 72 % 7 % 68 % 2 26 ø % % Q [m³/h] Fig. Instable pump characteristics ø219 ø2 ø19 ø18 ø17 37 kw 3 kw 22 kw 18, kw kw Q [m³/h] Fig. 6 Stable pump characteristics NKF 6-2-pole, z ISO 996 Annex A TM TM Q [l/min] Q [m³/h] Q [l/min] Fig. 7 Maximum permissible flow Power rating To ensure that the motor (electric motor or diesel engine) is capable of operating the pump at any time, thus ensuring water supply, DBI 21/41 stipulates an excess capacity of motor power. According to DBI 21/41, the motor power is found at 16 m NPS. The example below show a required motor size of 22 kw. 24 ø318 ø318 (Min. NPS) required ø41 (Max. NPS) ø7 ø41 NPS ø219 1 NPS TM ø17 ø ø17 (Min. NPS) ø219 (Max. NPS) Q [m³/h] Fig. 8 Required and stipulated power 8 4 TM

9 Curve charts Fire NKF ow to read the curve charts Impeller size Q curve for the individual pump Total pump head: = total 7 6 ø222 ø213 kw NKF 8-2-pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A Pump type and frequency of motor 6 4 kw 4 ø2 ø kw 3 kw This line indicates the limit of the individual pump performance found at m NPS Q [l/min] Q [m³/h] ø2 ø213 ø222 NPS The power curve indicates pump input power. is found at 16 m NPS. 3 ø ø188 (Min. NPS) ø222 (Max. NPS) Q [l/min] The NPS curves are according to the minimum and maximum impeller diameter. TM

10 NKF 32-2-pole NKF 32- (2-pole/ 29 rpm) ø kw NKF 32-2-pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A 6 ø 7. kw 4 ø18 4 ø171. kw 3 4 kw Q [l/min] Q [m³/h] ø219 8 ø 6 ø18 NPS 4 ø171 2 ø18 (NPS) ø219 (NPS) Q [l/min] 1 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (293 rpm) > (29 rpm) > (29 rpm) = (289 rpm) 19 1

11 NKF pole NKF 4-2 (2-pole/ 29 rpm) 11 1 ø26 NKF pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A ø2 ø238 ø23 ø21 3 kw 22 kw 18. kw kw 11 kw Q [l/min] Q [m³/h] ø26 ø2 16 ø238 ø23 12 ø21 NPS 8 ø21 (NPS) ø26 (NPS) Q [l/min] 1 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (296 rpm) 48 > (29 rpm) 26 > (294 rpm) > (294 rpm) 19 = (293 rpm) 11

12 NKF - 2-pole NKF - (2-pole/ 29 rpm) ø219 ø7 22 kw NKF - 2-pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A 2 ø194 18, kw kw 4 ø kw Q [l/min] Q [m³/h] 24 ø219 ø7 16 ø194 NPS ø ø17 (Min. NPS) ø219 (Max. NPS) Q [l/min] 4 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (29 rpm) 26 > (294 rpm) > (294 rpm) 19 = (293 rpm) 12

13 NKF -2 2-pole NKF -2 (2-pole/ 29 rpm) 11 NKF -2 2-pole, z 29/3 rpm 1 ø263 DBI 21/41 ISO 996 Annex A 9 ø kw 3 kw ø2 ø 22 kw 18. kw Q [l/min] Q [m³/h] ø ø249 2 ø2 ø NPS 1 ø (NPS) ø263 (NPS) Q [l/min] 1 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (296 rpm) > (296 rpm) 48 > 2 22 (29 rpm) 26 = 18. (294 rpm) 19 13

14 NKF 6-2-pole NKF 6- (2-pole/ 29 rpm) ø219 ø2 37 kw 3 kw NKF 6-2-pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A 6 2 ø19 48 ø18 22 kw 44 18, kw 4 ø17 36 kw Q [l/min] Q [l/min] ø219 3 ø2 2 ø18 ø19 NPS 16 ø17 12 ø219 (Max. NPS) 1 8 ø17 (Min. NPS) Q [l/min] 4 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (296 rpm) 48 > (296 rpm) > (29 rpm) 26 > (294 rpm) 19 = 17 (294 rpm) 14

15 NKF 8-2-pole NKF 8- (2-pole/ 29 rpm) 7 ø222 NKF 8-2-pole, z 6 ø213 kw 29/3 rpm DBI 21/41 ISO 996 Annex A 6 4 kw ø2 37 kw ø kw Q [l/min] Q [m³/h] 4 ø2 ø213 ø222 NPS 3 ø ø188 (Min. NPS) ø222 (Max. NPS) Q [l/min] TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (296 rpm) 64 > (298 rpm) > (296 rpm) 48 = (296 rpm)

16 NKF pole NKF 8-2 (2-pole/ 29 rpm) ø27 ø2 9 kw 7 kw NKF pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A ø233 ø216 kw 4 kw Q [l/min] Q [m³/h] 1 8 ø2 ø27 NPS 6 4 ø233 ø216 ø27 (Max. NPS) 1 ø216 (Min. NPS) Q [l/min] The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (298 rpm) > (297 rpm) 96 > (296 rpm) 64 = (298 rpm) 48 TM

17 NKF 1-2-pole NKF 1- (2-pole/ 29 rpm) ø219 ø2 ø9 7 kw kw 4 kw NKF 1-2-pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A Q [l/min] Q [m³/h] 7 ø ø2 ø9 NPS ø9 (NPS) ø219 (NPS) Q [l/min] 8 4 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. NBF, NKF 1- Impeller sizes Electric motor > (297 rpm) 64 > 9 2 (296 rpm) = 9 4 (298 rpm) 48 17

18 NKF pole NKF 12-2 (2-pole/ 29 rpm) ø269 ø26 ø262 ø2 ø2 ø2 ø24 ø242 ø237 kw 16 kw 132 kw 11 kw NKF pole, z 29/3 rpm DBI 21/41 ISO 996 Annex A 7 ø226 ø226 9 kw Q [l/min] Q [m³/h] ø ø2 ø24 ø237 ø226 NPS 16 6 ø269 (NPS) 12 4 ø226 (NPS) Q [l/min] 8 4 TM The full lines show the performance curves of electrically powered pumps. The dotted lines show the performance curves of diesel-powered pumps. NBF, NKF 12-2 NBF, NKF 12-2 Impeller sizes Electric motor Impeller sizes > (299 rpm) > > (299 rpm) > > (299 rpm) > (299 rpm)

19 NKF -4 4-pole NKF -4 (4-pole/ 148 rpm) 6 6 ø41 ø kw NKF -4 4-pole, z 148 rpm DBI 21/41 ISO 996 Annex A ø368 9 kw 4 7 kw 4 ø33 3 ø318 kw 3 4 kw Q [l/min] Q [m³/h] ø368 ø389 ø41 NPS 6 ø33 4 ø318 1 ø318 (Min. NPS) ø41 (Max. NPS) Q [l/min] TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (149) 113 > (148) > (148) 77 > (148) 6 = (148) 19

20 NKF -4 NKF -4 ( 16 rpm) ø41 ø389 NKF rpm ISO 996 Annex A DBI 21/41 6 ø ø33 ø Q [l/min] Q [m³/h] 14 ø ø368 ø389 NPS 8 6 ø318 ø ø318 (Min. NPS) ø41 (Max. NPS) Q [l/min] TM Impeller size > > >

21 NKF -4 NKF -4 ( 17 rpm) ø41 ø389 NKF rpm DBI 21/41 ISO 996 Annex A 6 ø ø33 ø Q [l/min] Q [m³/h] ø41 14 ø ø368 NPS 8 ø33 6 ø ø318 (Min. NPS) ø41 (Max. NPS) Q [l/min] TM Impeller size > > >

22 NKF -4 NKF -4 ( 18 rpm) ø41 ø389 NKF rpm DBI 21/41 ISO 996 Annex A 7 7 ø ø33 ø Q [l/min] Q [m³/h] ø41 16 ø ø33 ø368 NPS 8 ø ø318 (Min. NPS) ø41 (Max. NPS) Q [l/min] 1 TM Impeller size > >

23 NKF - 4-pole NKF - (4-pole/ 148 rpm) /38 /18 2 kw kw NKF - 4-pole, z 148 rpm DBI 21/41 ISO 996 Annex A 8 / kw 7 /441 /4 132 kw 6 11 kw Q [l/min] Q [m³/h] 24 /18 /38 16 /476 1 /441 /4 NPS 8 /4 (Min. NPS) /38 (Max. NPS) Q [l/min] 1 TM The performance curves of electrically and diesel-powered pumps are approximately similar and based on the values in table below. Impeller sizes Electric motor > (149) 113 > (148) 197 > (148) 18 > (148) 143 = 4 11 (148)

24 NKF - NKF - ( 16 rpm) 9 8 /441 NKF - 16 rpm DBI 21/41 ISO 996 Annex A / Q [l/min] Q [m³/h] 16 /441 /4 1 8 NPS /4 (Min. NPS) 4 /441 (Max. NPS) Q [l/min] 1 TM Impeller size >

25 NKF - NKF - ( 17 rpm) 1 9 /441 NKF - 17 rpm DBI 21/41 ISO 996 Annex A 8 / Q [l/min] Q [m³/h] / /4 1 NPS 8 /4 (Min. NPS) /441 (Max. NPS) Q [l/min] 1 TM Impeller size

26 NKF - NKF - ( 18 rpm) 1 11 /441 NKF - 18 rpm DBI 21/41 ISO 996 Annex A 1 9 / Q [l/min] Q [m³/h] 24 /441 / NPS 8 /4 (Min. NPS) 4 /441 (Min. NPS) e+4 1e+4 Q [l/min] 1 TM Impeller size >

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GRUNDFOS DATA BOOKLET. Fire CRFF. Grundfos fire systems. VdS-approved CR pumps for fire systems 50 Hz

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