BM-B 50/175-1,1/4

Name: BM-B 50/175-1,1/4
Brand: Wilo
SKU: 2103222

Monobloc pump

Article number: 2103222

Series BM

Data sheet

Hydraulic data
Minimum efficiency index (MEI)	≥ 0.4
Maximum operating pressure PN	10 bar
Min. fluid temperature T_min	-10 °C
Max. fluid temperature T_max	90 °C
Min. ambient temperature T_min	0 °C
Max. ambient temperature T_max	40 °C

Motor data
Mains connection	3~400 V, 50 Hz
Number of poles	4
Voltage tolerance	±10 %
Motor efficiency class	IE3
Rated power P₂	1.1 kW
Rated current I_N	2.54 A
Rated speed n	1450 1/min
Power factor cos φ₁₀₀	0.80
Motor efficiency 50% η_M50%	85.9 %
Motor efficiency 75% η_M75%	86.2 %
Motor efficiency 100% η_M100%	85.4 %
Insulation class	F
Protection class motor	IP55

Materials
Pump housing	Bronze
Impeller	Bronze
Shaft	Stainless steel
Mechanical seal	Q1Q1VGG

Installation dimensions
Pipe connection, suction side DNs	DN 65
Pipe connection, discharge side DNd	DN 50

Ordering information

Product data
Brand	Wilo
Product description	BM-B 50/175-1,1/4
Article number	2103222
EAN number	4048482067674
Colour	Green
Minimum order quantity	1
Date of sales availability	2009-09-01

Packaging
Packaging type	Cardboard box
Packaging property	Transport packaging
Pieces per pallet	1
Number per layer	1

Dimension, weight
Length with packaging	560 mm
Length L	472 mm
Height with packaging	370 mm
Height H	340 mm
Width with packaging	320 mm
Width W	285 mm
Gross weight, approx. m	52 kg
Net weight, approx. m	50 kg

Single-stage glanded centrifugal pump in compact close-coupled design with directly flanged three-phase motor and one-piece shaft. With forced-flow circulation, bidirectional bellows mechanical seal and cavitation-reducing impeller. The pump is suitable for installation on a base.

Operating data
Min. fluid temperature T_min	-10 °C
Max. fluid temperature T_max	90 °C
Min. ambient temperature T_min	0 °C
Max. ambient temperature T_max	40 °C
Maximum operating pressure PN	10 bar
Minimum efficiency index (MEI)	≥ 0.4

Motor data
Motor efficiency class	IE3
Mains connection	3~400 V, 50 Hz
Voltage tolerance	±10 %
Rated power P₂	1100 W
Rated speed n	1450 1/min
Rated current I_N	2.54 A
Power factor cos φ₁₀₀	0.80
Motor efficiency 50% η_M50%	85.9 %
Motor efficiency 75% η_M75%	86.2 %
Motor efficiency 100% η_M100%	85.4 %
Insulation class	F
Protection class	IP55

Materials
Pump housing	Bronze
Impeller	Bronze
Shaft	Stainless steel
Shaft seal	Q1Q1VGG

Installation dimensions
Pipe connection, suction side DNs	DN 65
Pipe connection, discharge side DNd	DN 50

Ordering information
Brand	Wilo
Product description	BM-B 50/175-1,1/4
Net weight, approx. m	50 kg
Article number	2103222

Installation type

Continuous, infinitely variable control, differential pressure-sensitive CC-HVAC system (24)
CC-HVAC system
	CC-HVAC-System 1x3.0A-T34-DOL-FC-WM	2527800	on request
	CC-HVAC-System 2x3.0A-T34-DOL-FC-WM	2527801	on request
	CC-HVAC-System 3x3.0A-T34-DOL-FC-WM	2527802	on request
	CC-HVAC-System 4x3.0A-T34-DOL-FC-WM	2527803	on request
	CC-HVAC-System 5x3.0A-T34-DOL-FC-WM	2527804	on request
	CC-HVAC-System 6x3.0A-T34-DOL-FC-WM	2527805	on request

Antenna GSM/GPRS
	D-network dual-band antenna with 3 m cable	2533862	on request
	D-network tri-band antenna 10 m cable	2533863	on request
	D-network tri-band antenna 15 m cable	2533864	on request

Outdoor temperature sensor Pt 100
	Outdoor temperature sensor Pt 100	2533772	on request

DDG impulse selector
	DDG impulse selector	2533770	on request

BMS base module
	BMS base module	2533800	on request

Communication module ModBus
	Communication module Modbus RTU	2533869	on request

Pump signalling module
	Signalling module pump 1-2	2533812	on request
	Signalling module pump 3-6	2533836	on request

Signal converter retrofit kit
	Signal converter 0-10 V / 0-20 mA	2534992	on request

Connection cable control modules/signalling modules
	Signalling modules connecting cable	2533890	on request
	Control modules connecting cable	2533790	on request

PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request

DDG (4-20mA)
	Wilo-DDG 10 Signal Trans.(4-20mA)2G VP.	2136454	on request
	Wilo-DDG 20 Signal Trans.(4-20mA)2G VP.	2136456	on request
	Wilo-DDG 40 Signal Trans.(4-20mA)2G VP.	2136458	on request
	Wilo-DDG 60 Signal Trans.(4-20mA)2G VP.	2136460	on request
	Wilo-DDG 100 Signal Trans.(4-20mA)	2211740	on request


Continuous, infinitely variable control, temperature-dependent CC-HVAC system (20)
CC-HVAC system
	CC-HVAC-System 1x3.0A-T34-DOL-FC-WM	2527800	on request
	CC-HVAC-System 2x3.0A-T34-DOL-FC-WM	2527801	on request
	CC-HVAC-System 3x3.0A-T34-DOL-FC-WM	2527802	on request
	CC-HVAC-System 4x3.0A-T34-DOL-FC-WM	2527803	on request
	CC-HVAC-System 5x3.0A-T34-DOL-FC-WM	2527804	on request
	CC-HVAC-System 6x3.0A-T34-DOL-FC-WM	2527805	on request

Antenna GSM/GPRS
	D-network dual-band antenna with 3 m cable	2533862	on request
	D-network tri-band antenna 10 m cable	2533863	on request
	D-network tri-band antenna 15 m cable	2533864	on request

Outdoor temperature sensor Pt 100
	Outdoor temperature sensor Pt 100	2533772	on request

BMS base module
	BMS base module	2533800	on request

Communication module ModBus
	Communication module Modbus RTU	2533869	on request

Pump signalling module
	Signalling module pump 1-2	2533812	on request
	Signalling module pump 3-6	2533836	on request

Signal converter retrofit kit
	Signal converter 0-10 V / 0-20 mA	2534992	on request

Temperature module
	Temperature module for systems with 1-3 pumps	2534991	on request
	Temperature module for systems with 4-6 pumps	2533771	on request

Connection cable control modules/signalling modules
	Signalling modules connecting cable	2533890	on request
	Control modules connecting cable	2533790	on request

PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request


Continuous, infinitely variable control, differential pressure-sensitive SC-HVAC system (25)
Antenna GSM/GPRS
	D-network dual-band antenna with 3 m cable	2533862	on request
	D-network tri-band antenna 10 m cable	2533863	on request
	D-network tri-band antenna 15 m cable	2533864	on request

Outdoor temperature sensor Pt 100
	Outdoor temperature sensor Pt 100	2533772	on request

DDG impulse selector
	DDG impulse selector	2533770	on request

SC communication module BACnet
	SC-communication module BACnet MS/TP (slave)	2538242	on request

Communication module LON (SC)
	Communication module LON (SC)	2538243	on request

Pump signalling module
	Signalling module pump 1-2	2533812	on request
	Signalling module pump 3-6	2533836	on request

SC-HVAC signal board
	SC-HVAC signal board	2119646	on request

PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request

Communication module GSM (SC)
	Communication module GSM (SC)	2542216	on request

SC/SC-FC-HVAC system
	SC-HVAC system 1x4A-WM (direct starting)	2545318	on request
	SC-HVAC system 2x4A-WM (direct starting)	2545319	on request
	SC-HVAC system 3x4A-WM (direct starting)	2545320	on request
	SC-HVAC system 4x4A-WM (direct starting)	2545321	on request
	SC-FC-HVAC system 1x4A-FC-WM (direct starting)	2545434	on request
	SC-FC-HVAC system 2x4A-FC-WM (direct starting)	2545435	on request
	SC-FC-HVAC system 3x4A-FC-WM (direct starting)	2545436	on request
	SC-FC-HVAC system 4x4A-FC-WM (direct starting)	2545437	on request

DDG (4-20mA)
	Wilo-DDG 10 Signal Trans.(4-20mA)2G VP.	2136454	on request
	Wilo-DDG 20 Signal Trans.(4-20mA)2G VP.	2136456	on request
	Wilo-DDG 40 Signal Trans.(4-20mA)2G VP.	2136458	on request
	Wilo-DDG 60 Signal Trans.(4-20mA)2G VP.	2136460	on request
	Wilo-DDG 100 Signal Trans.(4-20mA)	2211740	on request


Continuous, infinitely variable control, temperature-dependent SC-HVAC system (19)
Antenna GSM/GPRS
	D-network dual-band antenna with 3 m cable	2533862	on request
	D-network tri-band antenna 10 m cable	2533863	on request
	D-network tri-band antenna 15 m cable	2533864	on request

Outdoor temperature sensor Pt 100
	Outdoor temperature sensor Pt 100	2533772	on request

SC communication module BACnet
	SC-communication module BACnet MS/TP (slave)	2538242	on request

Communication module LON (SC)
	Communication module LON (SC)	2538243	on request

Pump signalling module
	Signalling module pump 1-2	2533812	on request
	Signalling module pump 3-6	2533836	on request

SC-HVAC signal board
	SC-HVAC signal board	2119646	on request

PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request

Communication module GSM (SC)
	Communication module GSM (SC)	2542216	on request

SC/SC-FC-HVAC system
	SC-HVAC system 1x4A-WM (direct starting)	2545318	on request
	SC-HVAC system 2x4A-WM (direct starting)	2545319	on request
	SC-HVAC system 3x4A-WM (direct starting)	2545320	on request
	SC-HVAC system 4x4A-WM (direct starting)	2545321	on request
	SC-FC-HVAC system 1x4A-FC-WM (direct starting)	2545434	on request
	SC-FC-HVAC system 2x4A-FC-WM (direct starting)	2545435	on request
	SC-FC-HVAC system 3x4A-FC-WM (direct starting)	2545436	on request
	SC-FC-HVAC system 4x4A-FC-WM (direct starting)	2545437	on request

Electrical accessories

Pump control (1)
Wilo-EFC
	EFC1.1 3x380-480V 50/60Hz IP55	2193432	on request


Pump control/accessories (25)
Communication module CC
	CC communication module	2533850	on request

Connection cable control modules/signalling modules
	Control modules connecting cable	2533790	on request
	Signalling modules connecting cable	2533890	on request

BMS base module
	BMS base module	2533800	on request

Antenna GSM/GPRS
	D-network dual-band antenna with 3 m cable	2533862	on request
	D-network tri-band antenna 10 m cable	2533863	on request
	D-network tri-band antenna 15 m cable	2533864	on request
	SMA/FME adapter	2545548	on request

Pump signalling module
	Signalling module pump 1-2	2533812	on request
	Signalling module pump 3-6	2533836	on request

Outdoor temperature sensor Pt 100
	Outdoor temperature sensor Pt 100	2533772	on request

Signal converter retrofit kit
	Signal converter 0-10 V / 0-20 mA	2534992	on request

DDG impulse selector
	DDG impulse selector	2533770	on request

Temperature module
	Temperature module for systems with 4-6 pumps	2533771	on request
	Temperature module for systems with 1-3 pumps	2534991	on request

Communication module ModBus
	Communication module Modbus RTU	2533869	on request

Communication module Profinet
	Profinet communication module	4255989	on request

SC communication module BACnet
	SC-communication module BACnet MS/TP (slave)	2538242	on request
	BACnet IP SC communication module	2553366	on request

Communication module LON (SC)
	Communication module LON (SC)	2538243	on request

Communication module GSM (SC)
	Communication module GSM (SC)	2542216	on request

SC-HVAC signal board
	SC-HVAC signal board	2119646	on request

Output filter EFC (150-500 m cable length)
	4.1 A sin IP54 Wilo-EFC filter	6084560	on request
	4.5 A sin IP00 Wilo-EFC filter	6084575	on request
	4.5 A sin IP20 Wilo-EFC filter	6084901	on request


Pump control/Comfort control system (6)
CC-HVAC system
	CC-HVAC-System 1x3.0A-T34-DOL-FC-WM	2527800	on request
	CC-HVAC-System 2x3.0A-T34-DOL-FC-WM	2527801	on request
	CC-HVAC-System 3x3.0A-T34-DOL-FC-WM	2527802	on request
	CC-HVAC-System 4x3.0A-T34-DOL-FC-WM	2527803	on request
	CC-HVAC-System 5x3.0A-T34-DOL-FC-WM	2527804	on request
	CC-HVAC-System 6x3.0A-T34-DOL-FC-WM	2527805	on request


Pump control/Smart control system (8)
SC/SC-FC-HVAC system
	SC-HVAC system 1x4A-WM (direct starting)	2545318	on request
	SC-HVAC system 2x4A-WM (direct starting)	2545319	on request
	SC-HVAC system 3x4A-WM (direct starting)	2545320	on request
	SC-HVAC system 4x4A-WM (direct starting)	2545321	on request
	SC-FC-HVAC system 1x4A-FC-WM (direct starting)	2545434	on request
	SC-FC-HVAC system 2x4A-FC-WM (direct starting)	2545435	on request
	SC-FC-HVAC system 3x4A-FC-WM (direct starting)	2545436	on request
	SC-FC-HVAC system 4x4A-FC-WM (direct starting)	2545437	on request


Pump control/interface module (6)
IF Modules EFC
	Profibus DP MCA Wilo-EFC	2193451	on request
	DeviceNet MCA Wilo-EFC	2193452	on request
	Profinet MCA Wilo-EFC	2193453	on request
	Ethernet/IP MCA Wilo-EFC	2193454	on request
	Modbus TCP MCA Wilo-EFC	2193455	on request
	BACnet/IP MCA Wilo-EFC	5114633	on request


Differential pressure detection (5)
DDG (4-20mA)
	Wilo-DDG 10 Signal Trans.(4-20mA)2G VP.	2136454	on request
	Wilo-DDG 20 Signal Trans.(4-20mA)2G VP.	2136456	on request
	Wilo-DDG 40 Signal Trans.(4-20mA)2G VP.	2136458	on request
	Wilo-DDG 60 Signal Trans.(4-20mA)2G VP.	2136460	on request
	Wilo-DDG 100 Signal Trans.(4-20mA)	2211740	on request


Motor protection (1)
PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Supervision
	Supervision Glanded pumps	2219321	on request

Installation
	Installation Glanded pumps	2219356	on request

Commissioning
	Commissioning Glanded pumps	2219391	on request

Maintenance
	Maintenance BASIC Glanded pumps	2219531	on request
	Maintenance COMFORT Glanded pumps	2219493	on request
	Maintenance PREMIUM Glanded pumps	2219546	on request

System Optimisation
	System Optimisation Glanded pumps	2219251	on request

Energy Solutions
	Energy Solutions Glanded pumps	2219240	on request

Repairs
	Repair Glanded pumps	2219610	on request

Product description	BM-B 50/175-1,1/4
Dimensions DN1	65
Dimensions DN1	50
Dimensions dL	19
Dimensions dL	19
Pump flange dimensions Ø k	145
Pump flange dimensions Ø k	125
Number of drilled holes n	4
Number of drilled holes n	4
Pump flange dimensions ØD	185 mm
Pump flange dimensions ØD	165 mm
Dimensions M1	100
Dimensions M2	71
Dimensions N1	265
Dimensions H1	160
Dimensions N2	212
Dimensions H2	180
Dimensions S	13
Dimensions W	273
Dimensions A	100
Dimensions B	50
Dimensions F	372
Pump flange dimensions Ød	118 mm
Pump flange dimensions Ød	99 mm

BM-B 50/175-1,1/4

Monobloc pump

Data sheet

Pump curves

Dimensions and dimensions drawings

Wilo-BM

Ordering information

Filtered by

Datasheet and documentation

Generate PDF

Catalogue creation

Installation type

CC-HVAC system

Antenna GSM/GPRS

Outdoor temperature sensor Pt 100

DDG impulse selector

BMS base module

Communication module ModBus

Pump signalling module

Signal converter retrofit kit

Connection cable control modules/signalling modules

PTC thermistor tripping unit

DDG (4-20mA)

CC-HVAC system

Antenna GSM/GPRS

Outdoor temperature sensor Pt 100

BMS base module

Communication module ModBus

Pump signalling module

Signal converter retrofit kit

Temperature module

Connection cable control modules/signalling modules

PTC thermistor tripping unit

Antenna GSM/GPRS

Outdoor temperature sensor Pt 100

DDG impulse selector

SC communication module BACnet

Communication module LON (SC)

Pump signalling module

SC-HVAC signal board

PTC thermistor tripping unit

Communication module GSM (SC)

SC/SC-FC-HVAC system

DDG (4-20mA)

Antenna GSM/GPRS

Outdoor temperature sensor Pt 100

SC communication module BACnet

Communication module LON (SC)

Pump signalling module

SC-HVAC signal board

PTC thermistor tripping unit

Communication module GSM (SC)

SC/SC-FC-HVAC system

Electrical accessories

Wilo-EFC

Communication module CC

Connection cable control modules/signalling modules

BMS base module

Antenna GSM/GPRS

Pump signalling module

Outdoor temperature sensor Pt 100

Signal converter retrofit kit

DDG impulse selector

Temperature module

Communication module ModBus

Communication module Profinet

SC communication module BACnet

Communication module LON (SC)

Communication module GSM (SC)

SC-HVAC signal board

Output filter EFC (150-500 m cable length)

CC-HVAC system

SC/SC-FC-HVAC system

IF Modules EFC

DDG (4-20mA)

PTC thermistor tripping unit

Supervision

Installation

Commissioning

Maintenance