GRUNDFOS DATA BOOKLET. Fire NKF. Grundfos fire systems. Fire systems with diesel-powered pumps approved by VdS

Transcription

1 GRUNDFOS DATA BOOKLET Grundfos fire systems Fire systems with diesel-powered pumps approved by VdS

2 Contents VdS standard Introduction to VdS 3 VdS standards 3 Standards approval process 3 VdS certificate 4 Overview of fire system 8 Fire pumps 9 Duty range 9 Engine power rating 11 Specifications 11 Diesel engines 12 Jockey pumps 12 Controller 12 Commissioning 12 Product description Introduction 13 NKF pump features 13 Performance range NKF, diesel 14 Product range NKF product range 15 Product numbers 16 Identification Type key 17 Nameplate 18 Materials 19 Shaft seals 19 Pump construction Sectional drawing Components and material specification Mechanical construction 21 Surface treatment 22 Test pressure 22 Diesel engine data Diesel engine range 23 Engine specifications 23 Operating conditions Pump unit location 29 Inlet pressure 29 Water inlet temperature 29 Ambient temperature 29 Ventilation requirements 29 Engine protection 29 Installation Piping 3 Alignment 3 Bare shaft pumps NKF 31 Flange dimensions 32 Curve charts How to read the curve charts 33 Curve conditions 34 Performance tests 34 VdS certificate 34 Performance curves -1 NKF 5-, 296 min 35 NKF 65-, 296 min NKF 8-, 296 min 37-1 NKF 8-25, 296 min 38 NKF 15-4, 148 min NKF 15-4, 16 min 4-1 NKF 15-4, 17 min 41 NKF 15-4, 18 min NKF 15-5, 148 min 43-1 NKF 15-5, 16 min 44 NKF 15-5, 17 min NKF 15-5, 18 min 46 Technical data Installation dimensions 47 Further product documentation WebCAPS 5 WinCAPS 51 Engine construction Engine specifications 25 Engine type and rating 27 Engine control panel 27 Starting system 27 Engine cooling 27 Engine exhaust 27 Fuel arrangement 28 Coupling 28 2

3 VdS standard Introduction to VdS VdS Schadenverhütung GmbH is an independent, international, accredited and notified testing and certification institution for fire prevention and safety technology as well as for physical and electronic protection against intrusion. ("Schadenverhütung" is the German word for "loss prevention") VdS Schadenverhütung is accredited according to the EN 45 series of European standards and is a member of the European Fire and Security Group (EFSG). VdS experts are represented in all relevant German and international committees. The concept behind VdS recognition is to ensure tested and certified quality in the products and services being offered in the safety and security markets. This is equally advantageous for user and supplier. For further information on VdS, see VdS standards The products in this data booklet have been built to comply with VdS standards on water-based fire fighting systems, described in the following documents: VDS CEA 41-S 3-11: Planning and installation. VDS 21: Guidelines for water-based fire fighting systems. VDS 2344: Procedures for testing and approval of equipment, components and systems used in fire protection and security control. Standards approval process Grundfos is to test the pumps and fill in the application forms for each individual pump size. The following documentation should to submitted to the VdS: complete drawings with list of parts and materials of the major components a statement regarding quality and production (ISO 91 + Annex A & D) a complete data sheet with technical information complete installation and operating instructions. If the application forms are accepted, VdS will attend the final test at the Grundfos premises. If the evaluation of the test results is positive, VdS will issue a certificate on the approval of the pump. 3

4 VdS standard VdS certificate The following pages show an example of a VdS certificate on an NKF pump. TM

5 VdS standard TM

6 VdS standard TM

7 VdS standard TM

8 VdS standard Overview of fire system )( 1 A A 9 x x x x x x a 6 5a 2 Fig. 1 Overview of fire system Pos. Description Pos. Description Pos. Description 1 Fire pump, electrically powered 5a Overflow 11 Overpressure backflow string 1a Fire pump, diesel powered 6 Pressure tank 12 Fire hydrant 2 Jockey pump 7 Fire pump priming tank 13 Wet sprinkler system 3 Compressor 8 Water supply 14 Dry sprinkler system 4 Control cabinet 9 Alarm valve 5 Intermediate water tank 1 Test-running string/bleed line TM System design A fire system typically consists of three pumps: one pressure pump (jockey pump) and two fire pumps, one duty and the other acting as standby. Each of the fire pumps is capable of achieving the required performance. Systems with only one fire pump or more than two fire pumps are, however, also seen. Function The duty and standby pumps are not powered by the same source. Either both pumps are electrically powered, supplied by two separate sources, or one pump is electrically powered and the other dieselpowered. This ensures that if one pump fails, for example due to fire damage, the other will operate.the pumps are pressure-controlled by pressure sensors. The pressure in the system is normally maintained by the pressure tank. If the system pressure drops, the water level and air pressure in the tank will decrease. The jockey pump starts to fill the tank, and the compressor to boost the pressure. If the jockey pump and the compressor succeed in boosting the water level and the pressure to a set value, both will stop. If a sprinkler has been activated and the water level and the pressure keeps falling, the duty pump will start. A further decrease in the pressure means that the duty pump is not running, and the standby pump will start. The same principle applies to the dry sprinkler system in which an air compressor maintains pressure from the alarm valve and through the sprinkler system. Although individually designed for the specific installation, each fire system must comply with VdS standards. Important! Requirements as to design, sizing and testing of fire protection systems vary from one country to another. 8

9 VdS standard Fire pumps Grundfos end-suction pumps approved by VdS are designed for the distribution of water in stationary sprinkler systems using either foam or water spray. They are operated in case of fire and during tests. H ø219 ø7 NKF 5- n = 296 min -1 ISO 996 Annex A Materials VdS-approved pumps must comply with these requirements: ø194 ø17 impeller and wear rings must be made of bronze wet parts such as shaft, washers and nuts must be made of stainless steel castings must be made of EN-GJL-25 cast iron. VdS requirements for EN-GJL-25 do not allow heads (H) above 11 metres and flows (Q) above 6 m 3 /h. Pump characteristic VdS 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 5 %. See examples of instable (fig. 2) and stable (fig. 3) characteristics below Q [m³/h] Q [l/min] Fig. 3 Stable pump characteristics Duty range VdS operates with a concept known as Q zul ("zul" is an abbreviation of "zulässig" which means permissible). See fig 4. The duty point of the pump must not be to the right of this limit. TM H 4 38 ø % 7 % 72 % 74 % NK Hz, n = 145 min -1 ISO 996 Annex A Q zul is defined on the basis of the pump NPSH curves. The following calculation must be made for the largest and smallest pump impeller diameter ø3 ø % 74.8 % 74 % Find the flow at 4.5 m and 5.5 m NPSH 72 % 3 28 ø % 7 % 68 % Multiply the value Q 4.5 m NPSH by ø % % Q [m³/h] TM Does the result exceed the value of Q 5.5 m NPSH? No Q zul = Q 4.5 m NPSH Yes Q zul = Q 5.5 m NPSH / 1.2 Fig. 2 Instable characteristics 9

10 VdS standard H ø219 NKF 5-5 Hz ISO 996 Annex A 6 56 ø7 22 kw 52 ø194 18,5 kw Q zul kw 4 ø kw Q [m³/h] P Q [l/min] ø194 ø7 ø219 NPSH ø ø219 (Max. NPSH) ø17 (Min. NPSH) Q [m³/h] TM Fig. 4 Indication of calculation of Q zul 1

11 VdS standard Example The following example shows how Q zul has been shown for the pump characteristics in fig. 4. Q zul for 219 impeller: Q 4.5 m NPSH = 11 m 3 /h Q 5.5 m NPSH = 119 m 3 /h Q 4.5 m NPSH x x 1.2 = 132 Does the result exceed the value of Q 5.5 m NPSH? 132 > 119 The maximum permissible flow of an NKF 5- pump with 219 impeller is 99 m 3 /h. Q zul for 17 impeller: Q 4.5 m NPSH = 93 m 3 /h Q 5.5 m NPSH = 93 m 3 /h Q 4.5 m NPSH x x 1.2 = 112 Does the result exceed the value of Q 5,5 m NPSH? 112 > 93 Yes Yes Q zul = Q 5.5 m NPSH / 1.2 Q zul 219 = 119 / 1.2 = 99 m 3 /h Q zul = Q 5.5 m NPSH / 1.2 Q zul 17 = 93 / 1.2 = 78 m 3 /h The maximum permissible flow of an NKF 5- pump with 17 impeller is 78 m 3 /h. On the basis of Q zul 219 and Q zul 17, the limit Q zul can be drawn and the duty range of the impellers in between can be read. Engine power rating To ensure that the engine is capable of operating the pump at any time, so that it can deliver water, VdS requires an excess capacity of engine power. According to VdS, the engine power is found at 16 m NPSH. The example below is based on Q zul =99 m 3 /h as previously calculated. Engines must have a safety factor of an additional 1 % of the P2 required. Specifications Each curve chart is followed by a specification of technical data. See table below. Grundfos A/S Manufacturer: Poul Due Jensens Vej 7A DK-885 Bjerringbro Fire pump model/size: NKF 5- VdS Approval No: P 4556 Test day: Drawn by: XXXXX XXXXXX Date: The curve is traced for: D2 normal: 219 D2 turned down: 17/194/7 b2: 14.2/12.5/12/11.6 Dns: 65 Dnd: 5 Emergency reserve displacement volume: VdS Approval No. Each pump has its own VdS approval number. D2 normal l/min, 1.96 m3/h 2 % of Q zul Minimum coverage in metres: 3.5 The locked rotor torque traced at maximum power load: Max..5 Nm D2 indicates the largest impeller diameter of the specific pump. D2 turned down D2 turned down indicates the reduced diameters of the impellers, approved for each model. b2 The impeller is of the closed type. The b2 dimension indicates the width of the opening where water leaves the impeller. P P2 required P2 necessary ø7 ø194 ø219 NPSH ø ø219 4 ø17 (Min. NPSH) (Max. NPSH) Q [m³/h] Fig. 5 Necessary and required power P2 required: 22 kw Rated engine power: 22 kw + 1 % = 24.2 kw. TM Fig. 6 b2 impeller dimension When the impeller diameter is reduced, the b2 dimension is increased. TM

12 VdS standard DNs DNs indicates the diameter of the internal flange on the suction side. DNd The DNd indicates the diameter of the internal flange on the discharge side. Emergency reserve displacement volume If the pump runs against a closed valve, the emergency reserve displacement volume indicates the minimum flow to be led away from the pump to prevent breakdown within 48 hours. This flow must be led out of the pump bleed line. Minimum coverage in metres The minimum coverage in metres indicates the minimum head for which the pump is approved. The locked rotor torque traced at maximum power load The locked rotor torque traced at maximum power load indicates the "break-away" torque of the pump. Diesel engines The diesel engine 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 15 seconds; the engine is capable of starting at a room temperature of 5 C. The heat exchanger cools the engine; the water is taken from the sprinkler pump. The water in the closed system is circulated by an auxiliary pump driven by the engine. A suitable air filter is attached to the air intake; a silencer is offered to the exhaust system. The diesel tank contains fuel for six hours on full load. The engine incorporates two independent 24 V starters and battery sets. Each lead acid battery set to the IEC standard is charged by an independent, continously connected, fully automatic, constant potential charger. Each complete engine and pump unit is tested on the manufacturers test bed for at least 1.5 hours at rated flow. A supplier test is prepared and the result recorded on the test certificate. 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 lowlevel 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. There are no specific VdS requirements as regards the jockey pump. Controller The controller for the diesel fire pump complies with the CEA 41 standard. The Grundfos diesel-powered fire system is equipped with VdS-approved controller, sourced externally. The controller has these features: colour red (RAL 3) IP 54 compliant. The controller is mounted on the base frame. Commissioning The installer should commission the complete fire unit before handing it over to the plant manager on site. Many potential issues of the complete fire system must be tested before starting up 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, VdS stipulates that fire system tests should be carried out, for example: 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 fire system has been installed according to VdS 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. 12

13 Product description Introduction This data booklet covers the NKF pump range. The pumps have been tested and certified in compliance with the VdS requirements for water-based fire fighting systems. Pump designations is an NKF pump and engine mounted on a common base frame. The unit can be incorporated in a fire system. NKF is a pump without engine (bare shaft pump). Scope of delivery A complete Fire FK unit assembled and supplied from factory normally comprises these elements: a pump and engine mounted on a common base frame a flexible coupling plugs and screws in stainless steel. NKF pump features NKF pumps are non-self-priming, single-stage, centrifugal, volute pumps. The pumps have these features: axial suction port, radial discharge port and horizontal shaft components cast iron pump housing, bronze impeller, carbon steel shaft, bronze shaft sleeves and wear rings dimensions and rated performance according to DIN and ISO 2858 dynamically balanced rotating parts according to ISO 194, class 6.3; hydraulically balanced impellers two sturdy, oil-lubricated, anti-friction bearings. The standard engine is supplied with these elements: cooling loop flexible exhaust industrial silencer fuel tank two storage battery units heat exchanger (valves included). Fig. 7 : An NKF end-suction pump and engine mounted on a base frame. TM

14 Performance range NKF, diesel H 1 NKF Diesel min min min min min min min min min Q [m³/h] TM Fig. 8 Performance range 14

15 Product range NKF product range Pump size VdS Approval No. Engine, P2 NKF 5- P NKF 65- P NKF 8- P NKF 8-25 P NKF 15-4 P NKF 15-5 P The standard range has been composed on the basis of the following parameters: Pump housings have discharge flanges from DN 5 to DN 15. Impellers are made of bronze. Neck rings are made of bronze. 15

16 Product range Product numbers The product numbers are reference numbers for all pump versions. All units receive a unique product number specified according to the order. Product range TM Impeller Product numbers size Engine type diameter 148 rpm 16 rpm 17 rpm 18 rpm 296 rpm / / JU4H-NL14 / / / / / /195 JU4H-NL / / / JU4H-NL14 / / JU4H-NL24 / / JU4H-NL24 / / JU4H-NL34 / /318 /335 /389 /41 /415 /441 JU4H-NL JU6H-NL JU6H-NL5 JU6H-NL JW6H-NL JU6H-NL JW6H-NL JU6H-NL JW6H-NL JW6H-NL

17 Identification Type key Fire systems Example Fire NK F 8-25 /27 D -F -X -D -B -A -F Fire: Fire system Pump type NK F: Pump approved for fire fighting Nominal diameter of discharge port (DN) Pump housing size Actual impeller diameter Driver D: Diesel engine Approval of pump F: VdS Approval of unit X: No approval Pipe connection D: DIN Controller B: For mounting on base frame Shaft seal A: BAQE Coupling F: Flexible coupling, Centaflex 17

18 Identification Diesel engine Exampel J U 4 H -NL 14 Enigne type J: John Deere based engine Motor series U: Standard range 4-cylinder engine = 4.5 litres 6-cylinder engine = 6.8 litres Number of cylinders 4 6 Cooling H: via heat exchanger Approvals of eninge NL: Non-listed engine Reference number for power and speed range The type key example shows a 4-cylinder, non-listed John Deere standard motor with a 4.5 litres cylinder capacity. Cooling takes place via a heat exchanger. Nameplate Type: part No. serial No. 8-25/27-D-F-X-D-B-A-F XXXXXXXX XXXXXXXXXX Main Supply: impeller diameter: JU4H-NL24 27 Q: 15 m /h H: 12 m P2: 64 kw n: min IP G: kg Made in Germany 38/64 VdS pump VdS-approved Fig. 9 Example of nameplate The nameplate shows a with a rated flow of 15 m 3 /h at 296 min -1. The pump is provided with a 27 impeller to deliver a rated head (net pressure) of 112 metres. See fig TM

19 Identification Materials Pump housing: Grey cast iron, EN-GJL-25, EN-JL 14. Cover for pump housing: Grey cast iron, EN-GJL-25, EN-JL 14. Bearing bracket: Grey cast iron, EN-GJL-25, EN-JL 14. Pump shaft: Stainless steel, DIN W.-Nr Impeller: Bronze, DIN W.-NR Rubber parts: EPDM to the ASTM standard. Neck rings: Bronze, DIN W.-Nr Shaft seals: BAQE. Shaft seals NKF pumps are supplied with BAQE shaft seals. Shaft seal codes The positions (1) - (4) cover four pieces of information about the shaft seal: Example (1) (2) (3) (4) Grundfos type designation Material, rotating seal face Material, stationary seat Material, secondary seal and other rubber and composite parts, except the neck ring The following table explains the positions (1), (2), (3) and (3). Pos. Type Short description of shaft seal (1) B Rubber bellows seal Pos. Type Material Synthetic carbons: (2) and (3) A Q Pos. Type Material (4) E EPDM Carbon, metal-impregnated (antimony (not approved for potable water)) Silicon carbide 19

20 Pump construction Sectional drawing f 67 66a 66 11a 72a f TM Fig. 1 Sectional drawing, NKF 5-, 65-, 8-, 8-25, 15-4, 15-5 Components and material specification Pos. Component Material specification 6 Pump housing EN-GJL-25 11a Key Stainless steel DIN W.-Nr /AISI 34 Plug (drain, priming) DIN W.-Nr Impeller G-CuSn5Zn5Pb5 51 Shaft Stainless steel DIN W.-Nr /AISI 4 53 Ball bearing SKF - FAG - NSK 54 Ball bearing SKF - FAG - NSK 66 Washer Stainless steel DIN W.-Nr /AISI 33 66a Spring washer Stainless steel Nut Stainless steel DIN W.-Nr /AISI 34 72a O-ring O-ring, EPDM or FKM 77 Cover EN-GJL Bearing bracket EN-GJL Mechanical shaft seal 159f Retaining ring

21 Pump construction Mechanical construction Pump housing The cast iron volute pump housing has axial suction port and radial discharge port. Flange dimensions are according to EN The pump housings have both a priming and a drain hole closed by plugs. Shaft seal The shaft seal is an unbalanced, mechanical shaft seal with dimensions to EN Seal faces are available in a variety of combinations. The code of the standard version is BAQE, see page 19. Impeller The closed impeller is made of bronze and has doublecurved blades with smooth surfaces for high efficiency. Fig. 11 NKF pump housing Bearing bracket and shaft The bearing bracket has two sturdy, antifriction, lubricated-for-life bearings. However, oversize pumps with 55 mm shaft diameter have open bearings with lubricating nipples. The bearing bracket is made of cast iron, EN-GJL-25. The shaft is made of stainless steel, DIN W.-Nr / AISI 4. Shaft diameter d5 is either 24, 32 or 55. A thrower on the shaft prevents water from entering the bearing bracket. TM Fig. 13 Impeller for an NKF pump All impellers are dynamically and hydraulically balanced. The hydraulical balancing compensates for axial thrust. The direction of rotation of the impeller is clockwise when viewed from the motor. All impellers are adapted to the duty point required by the customer. TM TM Fig. 12 Bearing bracket and shaft NKF pumps are fitted with one of four shaft, shaft seal and bearing sizes. 21

22 Pump construction Base frame Pump and engine are mounted on a common base frame. TM Fig. 14 Schematic view of NKF pump and engine mounted on a base frame Surface treatment The cast iron parts of NKF pumps are electrocoated. The electrocoating process includes : 1. Alkaline cleaning. 2. Pre-treatment with zinc phosphate coating. 3. Cathodic electrocoating (epoxy). 4. Curing of paint film at -25 C. The colour code is NCS 9/RAL Final spray-painting with red two-component paint, RAL 3. Test pressure Pressure testing has been made with + C water containing corrosion inhibitor. Pressure Operating pressure Test pressure stage bar MPa bar MPa PN PN

23 Diesel engine data Diesel engine range Engine model Rated power 145 rpm 16 rpm 17 rpm 18 rpm 296 rpm JU4H-NL14 48 JU4H-NL24 64 JU4H-NL34 96 JU4H-NL JU6H-NL3 115 JU6H-NL JU6H-NL JW6H-NL JW6H-NL4 238 Engine specifications JU4H-NL14, -NL24, -NL34, -NL5 JU4H model -NL14, -NL24 -NL34 -NL5 Number of cylinders 4 Aspiration Naturally aspirated Turbo charged Rotation Clockwise rotation viewed from heat exchanger/front of engine Weight [kg] Compression ratio 17.6:1 17.:1 Displacement [l] 4.5 Engine type 4-stroke cycle - inline construction Bore and stroke 16 x 127 Installation drawing D-525 C7575 (DC engine wiring) C7575 (DC engine wiring) Wiring diagram C7651 (AC heater wiring) C7591 (AC heater wiring) Engine John Deere 445 series JU6H-NL3, -NL5, -NL6 JU6H model -NL3, -NL5 -NL6 Number of cylinders 6 Aspiration Turbo charged Turbo charged with raw water aftercooling Rotation Clockwise rotation viewed from heat exchanger/front of engine Weight [kg] Compression ratio 17.:1 Displacement [l] 6.8 Engine type 4-stroke cycle - inline construction Bore and stroke 16 x 127 Installation drawing D-526 C7575 (DC engine wiring) Wiring diagram C7591 (AC heater wiring) Engine John Deere 668 Series 23

24 Diesel engine data JW6H-NL3, -NL4, -NL6 JW6H model -NL3 -NL4 -NL6 Number of cylinders 6 Aspiration Turbo charged with jacket water aftercooling Turbo charged with raw water aftercooling Rotation Clockwise rotation viewed from heat exchanger/front of engine Weight [kg] Compression ratio 16.5:1 15.7:1 Displacement [l] 8.1 Engine type 4-stroke cycle - inline construction Bore and stroke 116 x 127 Installation drawing UD UD - 14 Wiring diagram C762 (DC engine wiring) C765 (AC heater wiring) Engine John Deere 681 series 24

25 Engine construction Engine specifications Engine type JU4H-NL14 JU4H-NL24 JU4H-NL34 JU4H-NL5 JU6H-NL3 JU6H-NL5 JU6H-NL6 JW6H-NL3 JW6H-NL4 JW6H-NL6 Air cleaner Direct mounted, washable, for indoor service Disposable, drip-proof, for indoor service For outdoor type Alternator 24 V-DC, 4 ampere, with belt guard Exhaust protection Blankets for manifold and turbocharger Metal guards on manifolds and turbocharger Coupling Flexible coupling Exhaust connection Stainless steel flex exhaust, NPT Flywheel housing SAE3 Flywheel power take-off 11.5" SAE, industrial flywheel connection Fuel connections Fire resistant flexible supply and return lines Fuel injection system Direct injection Fuel filter Primary and secondary with priming pump Engine heater 1 V-AC, 15 W 24 V-AC, 15 W 23 V-AC, 25 W 115 V-AC, 25 W Govenor, speed Constant speed, mechanical Heat exchanger Tube and shell type, 1 bar with BSP connections Tube and shell type, 14 bar with BSP connections Tube and shell type, 4 bar with NPTF connections Standard Optional 25

26 Engine construction (continued from the previous page) Engine type JU4H-NL14 JU4H-NL24 JU4H-NL34 JU4H-NL5 JU6H-NL3 JU6H-NL5 JU6H-NL6 JW6H-NL3 JW6H-NL4 JW6H-NL6 Instrument panel Tachometer, hourmeter, water temperature, oil pressure, two voltmeters Junction box Integral with instrument panel for DC wiring interconnection to engine controller Lubricating-oil cooler Engine water-cooled, plate type Lubricating-oil filter Full flow with by-pass valve Lubricating-oil pump Gear driven, gear type Manual start controls On instrument panel Overspeed control Electronic with reset and test on instrument panel Raw water solenoid operation Automatic from engine controller and from emergency local control Run-stop control On instrument panel with control position warning light Manual stop lever Run solenoid 24 V-DC energized to run 24 V-DC energized to stop Starters One 24 V-DC Two 24 V-DC Silencer Silencer Throttle control Adjustable speed control, tamper-proof Water pump Single poly-vee belt drive with guard Dual poly-vee belt drive with guard Standard Optional 26

27 Engine construction Engine type and rating The diesel engine for fire pump operation must be of the compression ignition type. The engines are rated at standard SAE conditions at mm Hg barometer and 25 C inlet air temperature. (SAE is an abbreviation of Society of Automotive Engineers.) The engines have an additional 1 % power reserve of the pump maximum requirement. Engine control panel The pump unit is controlled via a Minimax controller specifically sized for diesel motors driving fire pumps. The purpose of the PLC controller is to start the pump automatically and monitor the diesel engine. Alarm/ fault H1 H2 H3 H7 H8 H11 H12 H13 H14 H15 H21 H22 Fig. 15 Control panel Status H4 H5 H6 H9 H1 H16 H17 H18 H19 H H23 H24 Indicator lights on control panel Indicator light S1 S2 S3 S4 BS1 BS2 P8 V A xxxxx V A Description H1 Green Fire pump operation H2 White Fire pump stopped H3 Yellow Common fault H4 Green Processor on H5 Green Blinds, air in, open H6 Green Blinds, air out, open H7 Green Pressure switch 1 triggered H8 Yellow Pressure switch 1 fault H9 Green Pressure switch 2 triggered H1 Yellow Pressure switch 2 fault H11 Green Starting/ready H12 Red Error start H13 Red Diesel auto-start locked H14 Yellow Battery set 1 fault H15 Yellow Battery set 2 fault H16 Green Motor monitoring on H17 Red Oil pressure low H18 Red Overtemperature H19 Red Fuse blown H Yellow Electric generator dropped out H21 Red Fuel tap closed H22 Yellow Transmission path fault H23 Red Fuel shortage Dis. H P4 P5 P6 P7 S5 S6 S7 P2 P1 XXXXXXX P3 TM H24 Button Colour mark Yellow Transmission path fault Control buttons and legend Legend Description Dis. Display S1 Green Fire pump on, starting unit 1 S2 Green Fire pump on, starting unit 2 S3 Red Fire pump off S4 Yellow Start error/release S5 - Indicator light test S6 - Horn off/reset S7 - Menu scrolling H Horn (acoustic) P1 Tachometer [nim -1 x 1] P2 Oil pressure [bar] P3 Cooling water temperature P4 Amperemeter, battery set 1 P5 Voltmeter, battery set 1 P6 Amperemeter, battery set 2 P7 Voltmeter, battery set 2 P8 Hour counter Starting system The engine is provided with two storage battery units. At a temperature of C and a barometer of 76 mm Hg, each battery must have twice the capacity sufficient to maintain a 4-minute attempt to start cycle (1 consecutive cycles of 15 seconds cranking and 1 seconds rest). For recharging the batteries, an automatically controlled charger is used. The charger is powered from the building and fitted in the controller. Engine cooling The engine cooling system is of the closed-circuit heat exchanger type. The heat exchanger takes water from the discharge side of the sprinkler pump. The outlet pipe must be open so that the discharge water is visible. The water in the closed system is circulated by an auxiliary pump driven by the engine. If the cooling water taken from the pump exceeds 2 % of the maximum calculated system demand rate, the flow must be taken into account in the system calculations. Engine exhaust Each engine must have an independent exhaust system to prevent backpressure or backflow. A flex connector is used between the engine and the exhaust pipe. The purpose of the flex connector is to absorb thermal expansion and to isolate engine vibration to the rest of the exhaust run. The flex connector must not be used for misalignment. The exhaust system must be building-supported, not engine-supported. 27

28 Engine construction Fuel arrangement The fuel tank outlet must be placed at a higher level than the engine fuel inlet to ensure positive inlet pressure. The fuel tank must be sized for minimum six hours of operation. The tank must have a robust level indicator. In zones with temperatures below C, the fuel tank must be located in the pump room. Fuel supply and return lines must be metal pipes or metal hoses. All valves between the fuel tank and the engine must be attached direct to the tank with a visible indicator for open position. Coupling Engine and pump are connected by means of a flexible coupling. The mounting plate of the coupling is bolted on the engine flywheel and the pump shaft is fastened to the coupling by radial screws. TM Fig. 16 Flexible coupling 28

29 Operating conditions Pump unit location The pump unit is designed for installation in a nonaggressive and non-explosive atmosphere. Inlet pressure The inlet pressure is limited by the maximum operating pressure. The actual inlet pressure + pressure when the pump is running against a closed valve must always be lower than the maximum permissible operating pressure. Minimum inlet pressure The minimum inlet pressure must be according to the NPSH curve + a safety margin of at least 1. metres + correction for vapour pressure. See fig. 17. TM P2 [%] T [ C] Fig. 19 Relation between engine output (P2) and ambient temperature Ventilation requirements The purpose of the inlet louvre and ventilation system is as follows: to ensure that the temperature in the room does not exceed 49 C to supply adequate air for engine combustion to supply adequate air for ventilating radiated heat; both engine and exhaust system. TM Fig. 17 Schematic view of open system with NKF pump Water inlet temperature The water inlet temperature must not exceed 4 C. Where submersible pumps are used, the water temperature must not exceed 25 C. Ambient temperature If the ambient temperature exceeds +25 C or if the engine is installed more than 9 metres above sea level, the engine power must be derated according to figures 18 and 19. It may be necessary to use an oversize engine with a higher output. P2 [%] Fig. 18 Relation between engine output (P2) and altitude TM Fig. Room ventilation Minimum temperature in the pump room 4.5 C. Maximum temperature in the pump room 49 C at the air cleaner inlet with the engine running at rated load. Air humidity The relative air humidity must not exceed 95 %. Engine protection The engine must be protected against possible interruption of service through explosion, fire, flood, earthquake, freezing and other adverse conditions. TM

30 Installation Piping When installing the pipes, make sure that the pump housing is not stressed by the pipework. The suction and discharge pipes must be of an adequate size, taking the pump inlet pressure into account. Install the pipes so that air locks are avoided, especially on the suction side of the pump, see fig. 21. Alignment The engine and pump are aligned at delivery by means of shims, either under the pump or under the engine. Note: Always check alignment between engine and pump. This is particularly important with increased engine speed. Fig. 21 Pipelines Fit isolating valves on either side of the pump to avoid having to drain the system if the pump needs to be cleaned or repaired. Make sure the pipes are adequately supported as close to the pump as possible, both on the suction and the discharge side. The counter flanges should lie true against the pump flanges without being stressed; otherwise, the pump will be damaged. TM TM Fig. 22 Example of pipeline mounting 3

31 Bare shaft pumps NKF a f x DN t M l c d5 h t h1 n 2 DNs m 2 m 1 w S 1 b S 2 n 3 n 2 n 1 M TM E M Drain plug Pressure gauge connection Type Pump Supporting feet Shaft Pump moments DNs DNd a f h1 h2 M, E b m1 m2 n1 n2 w S1 S2 c d5 l x t n of inertia [kgm 2 ] NKF /8" M12 M NKF /8" M12 M NKF M /8" 34 M NKF M NKF M /2" 15 M 11 NKF M Weight [kg] 31

32 Bare shaft pumps Oversize pumps EN 733 describes only the standard types. The NKF range includes larger models (oversize pumps) for higher flow rates and heads. As oversize pumps are not according to the standard, dimensions of Grundfos NKF oversize pumps may differ from the dimensions of similar pumps from other suppliers. Flange dimensions The flange dimensions are in mm. D 1 D 2 D 3 S TM EN PN 1/16 EN PN 1 Nominal diameter (DN) D D D S 4 x 19 4 x 19 8 x 19 8 x 19 8 x 23 8 x 23 32

33 Curve charts How to read the curve charts Size of impeller QH curve for the individual pump Q zul indicates the limit of the individual pump performance range according to VdS Total pump head H = H total H 7 65 ø222 ø213 NKF 8- n = 296 min -1 ISO 996 Annex A Pump type and frequency of motor 6 ø ø P Q [m³/h] Q [l/min] The power curve indicates pump input power [P 2 ] 5 ø213 ø222 NPSH 4 ø2 3 ø ø188 (Min. NPSH) ø222 (Max. NPSH) Q [m³/h] 1 5 The NPSH curve are according to the minimum and maximum impeller diameter TM

34 Curve charts Curve conditions Selection of pumps The guidelines below apply to the curves shown in the performance curves, pages 35 to 46. Tolerances according to ISO 996, Annex A and VdS 21. The curves show pump performance with different impeller diameters at the nominal speed. The bold part of the curves shows the recommended operating range. The thin parts are not allowed according to VdS. Do not use the pumps at minimum flows below.1 x Q at optimum efficiency because of the danger of overheating of the pump. The curves apply to the pumping of water at a temperature of + C and a kinematic viscosity of 1mm 2 /s (1 cst). NPSH: The curves are according to the minimum and maximum impeller diameter. In case of other densities than 1 kg/m 3 the discharge pressure is proportional to the density. When pumping water with a density higher than 1 kg/m 3, engines with correspondingly higher outputs must be used. Performance tests The requested duty point for every pump is tested according to ISO 996, Annex A, and VdS 21. If the customer requires a specific impeller diameter (not a specific duty point), the pump will be tested at a duty point which is 2/3 of the maximum flow of the published performance curve related to the ordered impeller diameter (according to ISO 996, Annex A). If the customer requires either more points on the curve to be checked or certain minimum performances or certificates, individual measurements must be made. VdS certificate The pump order includes a test certificate confirming the required QH performance. Calculation of total head The total pump head consists of the height difference between the measuring points + the differential head + the dynamic head. H = H + H + H total geo stat dyn H geo : Height difference between measuring points. H stat : Differential head between the suction and the discharge side of the pump. H dyn : Calculated values based on the velocity of the pumped water on the suction and the discharge side of the pump. 34

35 Performance curves NKF min -1 NKF 5-, 296 min -1 Impeller diameter Engine type Rated engine power JU4H-NL14 48 H ø219 ø7 NKF 5- n = 296 min -1 ISO 996 Annex A ø ø Q [m³/h] Q [l/min] P2 24 ø219 NPSH ø7 16 ø ø ø17 (Min. NPSH) ø219 (Max. NPSH) Q [m³/h] 4 TM

36 Performance curves NKF min -1 NKF 65-, 296 min -1 Impeller diameter Engine type Rated engine power JU4H-NL14 48 H ø219 ø215 NKF 65- n = 296 min -1 ISO 996 Annex A ø195 ø ø Q [m³/h] P Q [l/min] ø185 ø195 ø219 ø215 NPSH ø17 12 ø219 (Max. NPSH) ø17 (Min. NPSH) Q [m³/h] 4 TM

37 Performance curves NKF min -1 NKF 8-, 296 min -1 Impeller diameter Engine type Rated engine power JU4H-NL14 48 > JU4H-NL24 64 H 7 65 ø222 ø213 NKF 8- n = 296 min -1 ISO 996 Annex A 6 55 ø2 5 ø Q [m³/h] Q [l/min] P2 5 ø213 ø222 NPSH 4 ø2 3 ø ø188 (Min. NPSH) ø222 (Max. NPSH) Q [m³/h] 5 TM

38 Performance curves NKF min -1 NKF 8-25, 296 min -1 Impeller diameter Engine type Rated engine power JU4H-NL24 64 > JU4H-NL34 96 H 11 ø27 NKF 8-25 n = 296 min -1 ISO 996 Annex A 1 9 ø255 8 ø233 7 ø Q [m³/h] Q [l/min] P2 1 ø27 NPSH 8 ø255 6 ø ø ø27 (Max. NPSH) ø216 (Min. NPSH) Q [m³/h] 5 TM

39 Performance curves NKF min -1 NKF 15-4, 148 min -1 Impeller diameter Engine type Rated engine power JU4H-NL5 65 > JU6H-NL5 113 > JU6H-NL6 143 H 65 6 ø41 11 kw NKF pole, 5 Hz ISO 996 Annex A 55 ø389 5 ø368 9 kw kw 4 ø ø kw 3 45 kw Q [m³/h] P Q [l/min] 1 8 ø389 ø41 NPSH ø368 6 ø ø318 1 ø318 (Min. NPSH) ø41 (Max. NPSH) Q [m³/h] 5 TM

40 Performance curves NKF min -1 NKF 15-4, 16 min -1 Impeller diameter Engine type Rated engine power JU4H-NL5 76 > JU6H-NL5 129 > JU6H-NL6 152 H 75 7 ø41 NKF 15-4 n = 16 min -1 ISO 996 Annex A ø389 ø ø335 ø Q [m³/h] P Q [l/min] 14 ø ø368 ø389 NPSH 8 6 ø318 ø ø318 (Min. NPSH) ø41 (Max. NPSH) Q [m³/h] 5 TM

41 Performance curves NKF min -1 NKF 15-4, 17 min -1 Impeller diameter Engine type Rated engine power JU4H-NL5 85 > JU6H-NL5 141 > JW6H-NL3 9 H ø41 ø389 NKF 15-4 n = 17 min -1 ISO 996 Annex A 65 6 ø ø335 ø Q [m³/h] P Q [l/min] ø ø368 ø389 NPSH 8 ø335 6 ø ø318 (Min. NPSH) ø41 (Max. NPSH) Q [m³/h] 5 TM

42 Performance curves NKF min -1 NKF 15-4, 18 min -1 Impeller diameter Engine type Rated engine power 318 JU4H-NL5 92 > JU6H-NL3 115 > JU6H-NL5 152 > JU6H-NL6 168 > JW6H-NL3 218 H ø41 ø389 ø368 ø335 ø318 NKF 15-4 n = 18 min -1 ISO 996 Annex A Q [m³/h] P Q [l/min] ø41 16 ø ø318 ø335 ø368 NPSH ø318 (Min. NPSH) ø41 (Max. NPSH) Q [m³/h] 1 5 TM

43 Performance curves NKF min -1 NKF 15-5, 148 min -1 Impeller diameter Engine type Rated engine power > JU6H-NL6 143 H 75 7 /441 NKF 15-5 n = 148 min -1 ISO 996 Annex A 65 / Q [m³/h] P Q [l/min] 14 / /415 NPSH 8 6 /415 (Min. NPSH) 15 4 /538 (Max. NPSH) Q [m³/h] 5 TM

44 Performance curves NKF min -1 NKF 15-5, 16 min -1 Impeller diameter Engine type Rated engine power 415 JU6H-NL6 152 > JW6H-NL3 196 H 9 NKF 15-5 n = 16 min -1 ISO 996 Annex A /441 8 / Q [m³/h] P Q [l/min] 16 /441 / NPSH /415 (Min. NPSH) 4 /441 (Max. NPSH) Q [m³/h] 1 TM

45 Performance curves NKF min -1 NKF 15-5, 17 min -1 Impeller diameter Engine type Rated engine power JW6H-NL3 9 H 1 9 /441 NKF 15-5 n = 17 min -1 ISO 996 Annex A 8 / Q [m³/h] P Q [l/min] / /415 1 NPSH 8 4 /415 (Min. NPSH) /441 (Max. NPSH) Q [m³/h] TM

46 Performance curves NKF min -1 NKF 15-5, 18 min -1 Impeller diameter Engine type Rated engine power 415 JW6H-NL3 218 > JW6H-NL4 238 H /441 /415 NKF 15-5 n = 18 min -1 ISO 996 Annex A Q [m³/h] P Q [l/min] 24 /441 / NPSH 8 /415 (Min. NPSH) 4 /441 (Min. NPSH) Q [m³/h] 1 TM

47 Technical data JU4H-NLxx Installation dimensions JU4H-NLxx TM DNs DNd Pump dimensions Assembly dimensions size Engine type PA PB PC PD MA MB MC CB 5- JU4H-NL JU4H-NL JU4H-NL14 JU4H-NL JU4H-NL24 JU4H-NL JU4H-NL DNs DNd Base frame dimensions N Number of holes size Engine type LA LB LC WA WB 5- JU4H-NL JU4H-NL JU4H-NL14 JU4H-NL24 Weight [kg] JU4H-NL24 JU4H-NL JU4H-NL (1) JU4H-NL14, -NL24: 3. (76 mm) tube-clamped exhaust connection JU4H-NL34, -NL5: 4. (12 mm) tube-clamped exhaust connection (2) Raw water connection for heat exchanger: - 1 BSPF (in - from cooling loop) BSPF (out - far side to drain) (3) Battery area: 79 x 695 (4) Lifting holes (4 x 76) 47

48 Technical data JU6H-NLxx Installation dimensions JU6H-NLxx TM size Engine type JU6H-NL3 DNs DNd Pump dimensions Assembly dimensions PA PB PC PD MA MB MC CB 15-4 JU6H-NL JU6H-NL JU6H-NL size Engine type JU6H-NL3 DNs DNd Base frame dimensions LA LB LC WA WB N Number of holes 15-4 JU6H-NL JU6H-NL JU6H-NL (1) 5. (127 mm) tube-clamped exhaust connection (2) Raw water connection for heat exchanger: - 1 BSPF (in - from cooling loop) BSPF (out - far side to drain) (3) Battery area: 11 x 695 (4) Lifting holes (4 x 76) Weight [kg] 48

49 Technical data JW6H-NLxx Installation dimensions JW6H-NLxx TM DNs DNd Pump dimensions Assembly dimensions size Engine type PA PB PC PD MA MB MC CB 15-4 JW6H-NL JW6H-NL3 JW6H-NL DNs DNd Base frame dimensions N Number of holes size Engine type LA LB LC WA WB 15-4 JW6H-NL JW6H-NL3 JW6H-NL4 (1) JW6H-NL3, -NL4: 5. (127 mm) tube-clamped exhaust connection JW6H-NL6: 6. (152 mm) tube-clamped exhaust connection (2) Raw water connection for heat exchanger: - 1 BSPF (in - from cooling loop) BSPF (out - far side to drain) (3) Battery area JW6H-NL3, -NL4: 99 x 85 JW6H-NL6: 165 x 85 (4) Lifting holes (4 x 76) Weight [kg]

50 Further product documentation WebCAPS WebCAPS is a Web-based Computer Aided Product Selection program available on WebCAPS contains detailed information on more than 185, Grundfos products in more than languages. In WebCAPS, all information is divided into 6 sections: Catalogue Literature Service Sizing Replacement CAD drawings. Catalogue This section is based on fields of application and pump types, and contains technical data curves (QH, Eta, P1, P2, etc.) which can be adapted to the density and viscosity of the pumped liquid and show the number of pumps in operation product photos dimensional drawings wiring diagrams quotation texts, etc. Literature In this section you can access all the latest documents of a given pump, such as data booklets installation and operating instructions service documentation, such as Service kit catalogue and Service kit instructions quick guides product brochures. Service This section contains an easy-to-use interactive service catalogue. Here you can find and identify service parts of both existing and discontinued Grundfos pumps. Furthermore, this section contains service videos showing you how to replace service parts. 5

51 1 Further product documentation Sizing This section is based on different fields of application and installation examples, and gives easy step-by-step instructions in how to select the most suitable and efficient pump for your installation carry out advanced calculations based on energy consumption, payback periods, load profiles, life cycle costs, etc. analyse your selected pump via the built-in life cycle cost tool determine the flow velocity in wastewater applications, etc. Replacement In this section you find a guide to selecting and comparing replacement data of an installed pump in order to replace the pump with a more efficient Grundfos pump. The section contains replacement data of a wide range of pumps produced by other manufacturers than Grundfos. Based on an easy step-by-step guide, you can compare Grundfos pumps with the one you have installed on your site. When you have specified the installed pump, the guide will suggest a number of Grundfos pumps which can improve both comfort and efficiency. CAD drawings In this section it is possible to download 2-dimensional (2D) and 3- dimensional (3D) CAD drawings of most Grundfos pumps. These formats are available in WebCAPS: 2-dimensional drawings:.dxf, wireframe drawings.dwg, wireframe drawings. 3-dimensional drawings:.dwg, wireframe drawings (without surfaces).stp, solid drawings (with surfaces).eprt, E-drawings. WinCAPS WinCAPS is a Windows-based Computer Aided Product Selection program containing detailed information on more than 185, Grundfos products in more than languages. The program contains the same features and functions as WebCAPS, but is an ideal solution if no Internet connection is available. WinCAPS is available on CD-ROM and updated once a year. Fig. 23 WinCAPS CD-ROM 51

52 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence GB Subject to alterations. GRUNDFOS A/S. DK-885 Bjerringbro. Denmark Telephone: