GRUNDFOS DATA BOOKLET ALPHA Pumps and accessories
ALPHA Table of contents 1. Product data . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Product introduction Applications . . . . . . Features . . . . . . . . Pumped liquids. . . . 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5 6 7 Performance range . . . . . . . . . . . . . . . . . . . . .
1 Product data ALPHA 1. Product data 1.1 Product introduction Grundfos ALPHA circulators are medium-sized, speedcontrolled, high-efficiency pumps fitted with an electronically commutated motor with permanent-magnet rotor and variable frequency drive.
1 ALPHA TM074717 Product data A magnetite-resistant design, robust ceramic shaft, and stainless-steel bearing plate ensure that the ALPHA2 26-99 reliably delivers the optimal system performance throughout the years at the lowest possible energy consumption. ALPHA1 26-99 ALPHA1 26-99 circulator pumps are remote-controlled via a low-voltage 0-10 VDC signal by a system controller integrated into a boiler or a building management system.
1 ALPHA Product data 1.2 Applications ALPHA2 15-55 and ALPHA1 15-55 applications The ALPHA2 15-55 and ALPHA1 15-55 circulators are designed for the circulation of water in heating systems, domestic hot water systems as well as air-conditioning and cold water systems. Cold water systems are defined as systems where the ambient temperature is higher than the temperature of the pumped liquid. ALPHA2 15-55 and ALPHA1 15-55 circulators are the best choice for the following systems: • One pipe systems.
1 ALPHA Product data 1.
1 ALPHA Product data 1.4 Pumped liquids Grundfos ALPHA circulators are suitable for the following liquids: • clean, thin, non-aggressive and non-explosive liquids, not containing solid particles, fibers or mineral oil. • cooling liquids, not containing mineral oil. • domestic hot water with maximum 15 grain/gal (US), maximum 149 °F (65 °C); maximum peak 158 °F (70 °C). • softened water.
2 ALPHA Performance range 2. Performance range 2.1 ALPHA2 15-55 performance range and operating mode selection The shown hydraulic performance is without a check valve. 18 16 14 12 10 8 6 4 2 0 2 4 6 8 10 12 14 Q [US GPM] 16 18 20 22 TM074554 0 TM061857 AUTO ADAPT Operating range (max. - min.) Push-button • Each time you press the push-button, the circulator setting is changed. TM073288 High constant speed • Runs at a constant speed and consequently on a constant curve.
2 ALPHA Performance range 2.2 ALPHA1 15-55 performance range and operating mode selection The shown hydraulic performance is without a check valve. H [m] H [ft] 6 20 18 5 Constant Pressure III 16 14 4 12 3 10 Constant Pressure II 8 2 1 6 Constant Pressure I 4 2 0.0 1 2 0.5 3 4 1.0 5 6 7 1.5 8 9 2.0 10 11 2.5 12 13 3.0 14 15 3.5 16 17 18 4.0 Q [US GPM] Q [m³/h] Push-button • Each time you press the push-button, the circulator setting is changed.
2 ALPHA H [m] 50 15 14 45 13 40 12 11 35 10 30 Proportional Pressure III 25 Proportional Pressure II 7 20 9 Constant Pressure II 25 7 Constant Pressure I 20 5 15 15 4 4 10 3 2 10 2 5 5 1 1 0 0 0 0.0 2 4 0.5 1.0 6 0.5 8 10 2.0 12 2.5 14 3.0 16 3.5 18 4.0 20 22 24 4.5 5.0 5.5 26 28 6.0 6.5 Q [US GPM] 7.0 Q [m³/h] Proportional pressure AUTOAdapt 0 0 0.0 2 4 0.5 1.0 6 0.5 8 10 2.0 12 2.5 14 3.0 16 3.5 18 4.0 20 22 24 4.5 5.
2 ALPHA TM073788 Performance range 2.4 ALPHA1 26-99 performance range ALPHA1 26-99 circulators are externally speed-controlled by an analog 0-10 VDC signal.
2 ALPHA Performance range 2.5 ALPHA 15-55 HWR-D performance range The pump runs at a constant speed and consequently on a constant curve. The pump is set on the maximum curve under all operating conditions. H [m] 5.5 5.0 4.5 H [ft] ALPHA 15-55 HWR-D 60 Hz 18 17 16 15 14 4.0 3.5 3.0 13 12 11 10 9 2.5 2.0 1.5 8 7 6 Without check valve installed With check valve installed 5 4 1.0 0.5 3 2 1 0 0 0.0 12 1 2 0.5 3 4 1.0 5 6 7 1.5 8 9 2.0 10 11 12 13 14 15 16 17 18 Q [US GPM] 2.5 3.0 3.
3 Product range ALPHA 3. Product range 3.
3 ALPHA Product range ALPHA 15-55 HWR-D 14 Model Description Product number ALPHA 15-55 HWR-D LC CA • Pump with line cord • Push-button HWR-D (qty. 2) • Temperature sensor HWR-D 99472723 ALPHA 15-55 HWR-D LC • Pump with line cord • Push-button HWR-D (qty. 2) 99472724 ALPHA 15-55 SUC HWR-D Comfort • • • • Pump with line cord Push-button HWR-D (qty. 2) Comfort valve kits (qty.
3 ALPHA Product range 3.
4 ALPHA Identification 4. Identification Nameplates 4.1.2 Nameplate, ALPHA 26-99 models 4.1.1 Nameplate, ALPHA2 and ALPHA1 1 2 3 4 5 Min Max Nonsubmersible Pump Amp 0.05 0.
4 ALPHA 1 2 3 4 Example: ALPHA2 26-99 F 5 Code Description ALPHA Pump range (ECM circulator) TM074591 6 4.2.3 Type key, ALPHA 26-99 models Example of nameplate, ALPHA 15-55 HWR-D models Identification 4.1.3 Nameplate, ALPHA 15-55 HWR-D models Pump control: 1: Externally controlled (0-10 V) 2: Internally pressure-controlled modes 2 - Proportional pressure - Constant pressure Pos.
5 ALPHA Operation 5. Operation Operating conditions 5.1.1 Operating conditions, ALPHA2 15-55 and ALPHA1 15-55 models Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Motor protection The pump requires no external motor protection. Enclosure class Indoor use only, IP42. CSA enclosure type 2. Insulation class F Relative humidity Maximum 95 % Maximum outlet pressure 150 psi (10.34 bar) Inlet pressure Speed setting Min. [W] Max.
5 ALPHA Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Motor protection EP - Electronically Protected. The pump requires no external motor protection. Enclosure class CSA enclosure type 2. Indoor use only. X2D. Insulation class F Relative humidity Maximum 95 % Maximum system pressure 150 psi (10 bar) (1.0 MPa) Inlet pressure The minimum inlet pressure must be available at the pump inlet during operation. Liquid temp. Min. inlet press. [°F (°C)] [psi (bar) (MPa)] 203 (95) > 7 (0.48) (0.
5 ALPHA Operation 5.1.3 Operating conditions, ALPHA 15-55 HWR-D models Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Motor protection The pump requires no external motor protection. Enclosure class Indoor use only, IP42. CSA enclosure type 2. Insulation class F Relative humidity Maximum 95 % Maximum outlet pressure 150 psi (10.34 bar) Inlet pressure Liquid temp. Min. inlet press. [°F (°C)] [psi (bar)] 167 (75) 0.75 (0.05) 194 (90) 4.06 (0.28) 230 (110) 15.7 (1.
5 ALPHA Control modes 5.2.1 Control modes, ALPHA2 1 2 3 Operation Setting the pump AUTOAdapt, factory default setting - The pump's factory default setting is the AUTOAdapt setting. The setting can be changed from the recommended factory default setting to an alternative setting by pressing the pump's push-button. Changing from recommended to alternative pump setting - Heating systems are "slow" systems that cannot be set to the optimum operation within minutes or hours.
5 ALPHA Operation To activate manual summer mode, press and hold the pushbutton for three seconds. All light fields will turn off, and the pump will stop. The AUTOAdapt light field will flash for four seconds. To deactivate manual summer mode, press the push-button to return to normal operation. 5.2.2 Control modes, ALPHA1 Elements on the ALPHA1 user interface 1 2 PC XXXX 3 TM068878 4 Pos.
5 ALPHA TM073145 Internally controlled ALPHA2 26-99 circulator pumps are designed for systems with variable flow rates, where the pump is internally controlled via a user interface. ALPHA2 26-99 circulator pumps automatically control the differential pressure by adjusting the pump performance to the actual heat demand without the use of external components. Two different control modes are available: Operation 5.2.
5 ALPHA Operation 5.2.4 Control modes, ALPHA 15-55 HWR-D models Pump display symbol Status Explanation Red The symbol lights red when the battery level in the temperature sensor is at a critically low level (see fault finding section in the installation and operating instructions). Replace the batteries in the temperature sensor. LED symbols and buttons on the pump display "Temperature" 1 3 4 Pos.
6 Technical data ALPHA 6. Technical data 6.1 ALPHA2 15-55 6.2 ALPHA1 15-55 ALPHA1 Flow (Q) 0 - 21.5 gpm (0 - 4.9 m3/h) Head (H) 0 - 19 ft (0 - 5.8 m) Flow (Q) 0 - 17 gpm (0 - 3.9 m3/h) Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Head (H) 0 - 19 ft (0 - 5.8 m) 4-pole, synchronous permanent magnet motor. The pump requires no external motor protection. Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Motor Motor 4-pole, synchronous permanent magnet motor.
6 ALPHA Technical data 6.3 ALPHA 26-99 models 6.4 ALPHA 15-55 HWR-D ALPHA 26-99 models ALPHA 15-55 HWR-D models Flow (Q) 0 - 26 gpm (0 - 5.9 m3/h) Flow (Q) Max. 26 gpm (5.9 m3/h) Head (H) 0 - 42 ft (0 - 12.8 m) Head (H) Max. 42 ft (12.8 m) Supply voltage 1 x 115 V, + 10 %/- 10 %, 60 Hz Supply voltage Power usage (approximate) 1 x 115 V, +10 % / -10 %, 60 Hz. Requires no external motor protection. 3 - 120 W Max. 1.7 A Power usage (approximate): Min.: 2 W Amps Horsepower 0.
6 ALPHA 6.5 Materials ALPHA2 and ALPHA1 • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Description Material Controller complete Composite, PC Rotor can Stainless steel Radial bearing Ceramics Shaft Ceramics Rotor cladding Stainless steel Canadian EMC Standard: ICES-003 This class B digital apparatus complies with Canadian ICES-003.
6 ALPHA Technical data These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
7 Dimensions and weights ALPHA 7. Dimensions and weights 7.1 ALPHA2 15-55 ALPHA2 15-55 terminal box ALPHA2 15-55 line cord B F B F C TM068168 TM046012 D D E E G G A A C ALPHA2 15-55 FR terminal box ALPHA2 15-55 FR line cord B B C F F E G E G A A C D ALPHA 2 model Product number 115 V TM046013 TM068169 D Dimensions [in (mm)] A B C D E F 15-55 F 99163903 6.50 (165) 6.38 (162) 5.12 (130) 3.82 (97) 4.80 (122) 3.56 (90) 15-55 FR 99163932 6.50 (165) 7.01 (178) 5.
7 ALPHA Dimensions and weights 7.2 ALPHA1 15-55 ALPHA1 15-55 terminal box ALPHA1 15-55 line cord F B F B C TM068961 TM068963 D D E G E G A A C ALPHA1 15-55 FR terminal box ALPHA1 15-55 FR line cord B F B C F E E G G A A C D TM068964 TM068962 D Product number Dimensions [in (mm)] 115 V A 15-55 F 99287256 6.50 (165) 6.38 (162) 5.12 (130) 3.82 (97) 4.80 (122) 3.56 (90) 15-55 FR 99287259 6.50 (165) 7.01 (178) 5.12 (130) 3.82 (97) 4.80 (122) 3.
7 ALPHA Dimensions and weights 7.3 ALPHA1 26-99 ALPHA1 26-99 B F TM074553 D E G A C Model ALPHA1 26-99 Product number 115 V 99490914 Dimensions [in (mm)] A B C 6.50 (165) 5.91 (150) 4.45 (113) F G Flange Ship. wt. D E 3.78 (96) GF 15/26 with (2) 1/2" 4.06 (103) 6.58 (167) 5.79 (147) 5.95 (2.7) dia. bolt holes [lb (kg)] Note: Dimensions are in inches unless otherwise stated. LC models have a 6 ft (1.8 m), 3-prong line cord.
7 ALPHA Dimensions and weights 7.4 ALPHA2 26-99 ALPHA2 26-99 ALPHA2 26-99 SU B F C B C TM074552 TM077895 D E G A E G A F Model Product number 115 V Dimensions [in (mm)] A B C D E F G Connection [lb (kg)] ALPHA2 26-99 F 99490916 6.50 (165) 5.91 (150) 4.45 (113) 3.78 (96) GF 15/26 with 4.06 (103) 6.58 (167) 5.79 (147) (2) 1/2" dia. 5.95 (2.7) bolt holes ALPHA2 26-99 SU 99490917 7.10 (180) 5.55 (141) 4.06 (103) - 4.06 (103) 6.58 (167) 5.79 (147) 1 1/4" NSPM 5.30 (2.
7 ALPHA Dimensions and weights 7.5 ALPHA 15-55 HWR-D D A TM072657 C E F B ALPHA model 15-55 HWR-D Product number Dimensions [in (mm)] 115 V A B C 99472723 5.89 (149.6) 4.99 (126.7) 2.39 (60.8) 3.46 (88) 99472724 D Connection E F 4.11 (104.5) 5.91 (150) 1 1/4" NSPM Ship. wt. [lb (kg)] 5.75 (2.61) Note: Dimensions are in inches unless otherwise stated. LC models have a 6 ft (1.8 m), 3-prong line cord.
8 ALPHA Accessories 8. Accessories 8.1 Accessories for ALPHA Accessories, ALPHA HWR-D models TM067588 Accessories, ALPHA 2 Insulating shells Insulating shells limit the heat loss from the pump housing and pipes. Insulating shells are supplied with ALPHA2 cast iron and stainless steel flanged versions. Insulating shells are available as an accessory for ALPHA2 15-55 and ALPHA1 15-55 models. The fitting of insulating shells will increase the pump dimensions.
GRUNDFOS Water Utility Head Quarters Brookshire, Texas 77423 USA GRUNDFOS CBS Inc. 902 Koomey Road Brookshire, TX 77423 USA Phone: 281-994-2700 Toll Free: 1-800-955-5847 Fax: 1-800-945-4777 GRUNDFOS Pumps Corporation 9300 Loiret Boulevard Lenexa, Kansas 66219 USA Tel.: +1 913 227 3400 Fax: +1 913 227 3500 Canada GRUNDFOS Canada inc. 2941 Brighton Road Oakville, Ontario L6H 6C9 Tel.: +1-905 829 9533 Fax: +1-905 829 9512 Mexico Bombas GRUNDFOS de México S.A. de C.V. Boulevard TLC No.
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