✨ New Arrivals Just Dropped!Explore
Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V
HomeStore

Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V

Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V

The Salus MP200A is an ErP Energy Efficiency Class A circulating pump for domestic central heating and hot water systems — designed to replace standard three-speed pumps with a single, self-regulating unit that covers every job. Built around a permanent magnet motor with differential pressure controller, it automatically and continuously adjusts its output to match the actual demand of the heating circuit — delivering precisely the flow and head the system needs at any given moment, rather than running at a fixed speed regardless of demand. The result is significantly lower electricity consumption: the pump draws between just 5W and 45W depending on operating conditions, compared to 60–100W typical of a conventional three-speed pump at fixed speed. Maximum head 6m, maximum flow 2.4 m³/h, maximum water temperature 110°C. Supplied pre-wired with a plug connector — no terminal box opening required. Suitable for 130mm centre-to-centre pipework. 5-year Salus warranty.

ℹ ErP Class A vs Old Three-Speed Pumps — What the Saving Looks Like
The EU ErP Directive (Energy-related Products) set Minimum Energy Performance Standards for heating circulators that effectively banned inefficient fixed-speed pumps from 2013 onward. A Class A rated pump like the MP200A meets these standards through a permanent magnet motor and variable pressure control. In practical terms: a conventional three-speed pump running continuously at speed 2 (typical setting) consumes around 60–80W, adding roughly £100–£130/year to the electricity bill. The MP200A typically runs at 5–25W under normal residential loads — often cutting pump electricity costs by 70–80% versus what it replaces.
ErP Class A
Energy rated
4–6m
Head range
2.4 m³/h
Max flow rate
5–45W
Power range
5 years
Warranty
Features & Benefits
✔ Permanent Magnet Motor — Auto Differential Pressure
The MP200A uses a permanent magnet (EC/brushless) motor rather than the conventional induction motor found in standard three-speed pumps. Permanent magnet motors are intrinsically more efficient across their entire operating range — not just at peak load — because they eliminate the resistive losses and slip inherent in induction motor windings. The differential pressure controller continuously monitors the pressure difference between the pump inlet and outlet and adjusts motor speed to maintain the target differential — automatically slowing down when TRVs close and reducing flow demand, and speeding up when more zones open. This self-regulation means the pump is always running at the minimum speed needed, never wasting energy pushing water around a half-closed system at full speed.
✔ Variable & Fixed Speed — One Pump for All Jobs
The MP200A offers five operating modes selectable from the front control panel: three fixed-speed settings (equivalent to the traditional speed 1/2/3 of a conventional pump, for systems that require a constant flow regardless of differential pressure) and two variable-speed automatic modes — proportional pressure and constant pressure. Proportional pressure mode (the most energy-efficient for systems with TRVs) reduces the target head as flow demand falls, tracking a sloped curve rather than maintaining a constant pressure setpoint. This eliminates the pressure surge that occurs when multiple TRVs close simultaneously on a fixed-speed pump, reducing noise and extending valve life.
✔ Plug and Pump — Pre-Wired, No Terminal Box
The MP200A is supplied pre-wired with a mains plug and connector — the cable terminates in a plug that connects to the corresponding socket on the pump body, so there is no requirement to open the terminal box and make cable connections inside the pump housing. This dramatically speeds up installation (particularly on pump replacement jobs) and reduces the risk of wiring errors inside the terminal box. The pump can be swapped in and out without an electrician on site if a suitable switched fused spur is already in place — though the electrical installation must comply with Part P of the Building Regulations.
✔ Front Control Panel — Live Power Readout
The front-mounted control panel displays the pump's current operating mode and provides real-time power consumption in watts — so the installer and homeowner can see at a glance exactly how much electricity the pump is drawing at any moment. This live watt display is particularly useful at commissioning: it confirms that the auto-pressure mode is correctly regulating, allows comparison against a fixed-speed baseline, and helps identify if the pump is working harder than expected (which may indicate a dirty filter, partially closed isolators, or other system restrictions). If a fault is detected, an error code is shown on the panel rather than the pump simply stopping.
✔ Quiet Operation — <43 dB(A)
The MP200A is rated at less than 43 dB(A) sound pressure — significantly quieter than many conventional three-speed pumps, which often produce audible flow noise and motor hum at higher speeds. The permanent magnet motor contributes to quieter operation by eliminating the magnetic noise (hum) characteristic of induction motors, and the variable speed control means the pump rarely operates at maximum speed for extended periods. Particularly noticeable in properties where the pump is located in a utility room, airing cupboard, or kitchen — environments where background noise levels are lower and pump sound is more likely to be intrusive.
✔ 110°C — 10 Bar — Wide System Compatibility
A maximum fluid temperature of 110°C and system pressure rating of 10 bar (1.0 MPa) makes the MP200A suitable for a wide range of heating applications beyond standard residential radiator circuits — including high-temperature systems, pressurised primary circuits, and solar thermal primary loops where temperatures may exceed the 95°C typical of conventional domestic boilers. The IP42 protection rating makes it suitable for standard indoor heating plant room installation. Cast iron pump body. Insulation class H for high-temperature durability. Compatible with systems using standard heating inhibitor chemicals.
Technical Specifications — Salus MP200A
Manufacturer / Model Salus Controls — MP200A
Energy Efficiency Class A (ErP Directive compliant)
Motor Type Permanent magnet (EC) with differential pressure controller
Power Supply 230V AC / 50Hz
Power Consumption (Min / Max) 5W – 45W
Max Head 6m (4–6m operating range)
Max Flow Rate 2.4 m³/h
Fluid Temperature Range +2°C to +110°C
Max System Pressure 10 bar (1.0 MPa)
Centre-to-Centre Distance 130mm
Pipe Connections Phase · Null · Earthing
Pump Body Material Cast iron
Protection Grade IP42
Insulation Class H (TF110)
Sound Pressure Level <43 dB(A)
EMC Standards EN61000-6-1 · EN61000-6-3
Supply Pre-wired with plug connector — plug and pump
Supplied With Pump · 2× seals · connector · plug · grommet · operation manual
Warranty 5 years — Salus Controls manufacturer's guarantee
Frequently Asked Questions
Will this pump fit my existing pipework? What does 130mm centre-to-centre mean?
The 130mm centre-to-centre distance refers to the spacing between the pump's inlet and outlet pipe connections — measured centre to centre, this is 130mm. This is the standard dimension for most UK domestic central heating pumps, matching the connections of Grundfos Alpha/UPS, Wilo Stratos, DAB Evosta, and most other residential pump brands. Before ordering, measure the distance between the centre of your existing pump's inlet and outlet connections — if it is 130mm, the MP200A will be a direct fit onto the existing pipework using the supplied seals. Isolate the pump using the union valves on either side, drain, swap, and refill. If your existing pump has a different centre-to-centre spacing (e.g., 180mm), the MP200A cannot be a direct replacement without replumbing the connections.
Which operating mode should I use — proportional pressure, constant pressure, or fixed speed?
For most modern domestic central heating systems with thermostatic radiator valves (TRVs), proportional pressure (auto/variable) mode is the recommended setting — it gives the greatest energy saving because it reduces both flow and pressure as TRVs close, preventing the noise and pressure surge that occur when TRVs throttle down on a fixed-speed pump. Constant pressure mode suits systems where the pressure must be held stable regardless of flow — for example, some underfloor heating systems with manifold flow regulators, or systems where proportional mode causes intermittent noise from partially-open valves. Fixed speed settings (1, 2, or 3) are for systems that genuinely require a constant flow rate — older gravity-assisted systems, some primary circuits, or where an installer specifies a fixed flow to meet a particular heat emitter design. When in doubt, start on the lowest variable mode and increase if the system fails to heat adequately.
Can I use this pump for domestic hot water circulation (secondary return)?
Yes — the MP200A is rated for fluid temperatures up to 110°C and suitable for domestic hot water secondary circulation (hot water return loops), where a small pump circulates hot water around a pipework ring so that taps receive instant hot water without a lengthy wait. The pump's cast iron body and full temperature rating make it compatible with hot water circuits. However, for potable hot water secondary return applications, consult the pump's installation manual regarding material compatibility with the specific water quality, inhibitor type, and system configuration. Some installers prefer a dedicated DHW pump — confirm the installation manual approves the intended application before fitting.
Is 6m head enough for my system?
For the vast majority of domestic central heating systems in UK properties, 6m of head is more than sufficient. A typical two-storey semi-detached house with 8–12 radiators and standard 22/15mm pipework has a calculated system resistance of approximately 2–4m head under normal flow conditions — well within the 6m maximum. Issues arise in larger systems with extensive pipework runs, small-bore (microbore) circuits, or very high numbers of radiators — in these cases a system resistance calculation should be carried out by the installing engineer. If the existing pump was running on speed 3 of a three-speed unit and still struggling to heat the system adequately, a pump with higher head may be needed. In practice, the MP200A's variable pressure control means it will deliver the available head efficiently rather than wasting energy overcoming excess resistance.
What are the ErP Directive requirements, and does this pump comply?
The EU ErP (Energy-related Products) Directive, implemented in the UK via the Energy-related Products Regulations, set minimum energy performance standards for standalone heating circulators. Since 1 January 2013, new standalone circulators for residential heating must achieve a minimum Energy Efficiency Index (EEI) to be legally placed on the market — effectively outlawing standard fixed-speed induction motor pumps. The MP200A meets these requirements and achieves ErP Class A — the top energy efficiency classification — through its permanent magnet motor and automatic variable-speed control. Replacing a pre-2013 three-speed pump with an ErP-compliant Class A unit like the MP200A is also a requirement when upgrading heating systems under current Building Regulations Part L (conservation of fuel and power) in most replacement scenarios.
$40.62

Original: $116.07

-65%
Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V—

$116.07

$40.62

More Images

Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V - Image 2

Salus MP200A A-Rated Energy Saving Circulating Pump 4-6m Head — Central Heating Permanent Magnet Variable Speed 230V

The Salus MP200A is an ErP Energy Efficiency Class A circulating pump for domestic central heating and hot water systems — designed to replace standard three-speed pumps with a single, self-regulating unit that covers every job. Built around a permanent magnet motor with differential pressure controller, it automatically and continuously adjusts its output to match the actual demand of the heating circuit — delivering precisely the flow and head the system needs at any given moment, rather than running at a fixed speed regardless of demand. The result is significantly lower electricity consumption: the pump draws between just 5W and 45W depending on operating conditions, compared to 60–100W typical of a conventional three-speed pump at fixed speed. Maximum head 6m, maximum flow 2.4 m³/h, maximum water temperature 110°C. Supplied pre-wired with a plug connector — no terminal box opening required. Suitable for 130mm centre-to-centre pipework. 5-year Salus warranty.

ℹ ErP Class A vs Old Three-Speed Pumps — What the Saving Looks Like
The EU ErP Directive (Energy-related Products) set Minimum Energy Performance Standards for heating circulators that effectively banned inefficient fixed-speed pumps from 2013 onward. A Class A rated pump like the MP200A meets these standards through a permanent magnet motor and variable pressure control. In practical terms: a conventional three-speed pump running continuously at speed 2 (typical setting) consumes around 60–80W, adding roughly £100–£130/year to the electricity bill. The MP200A typically runs at 5–25W under normal residential loads — often cutting pump electricity costs by 70–80% versus what it replaces.
ErP Class A
Energy rated
4–6m
Head range
2.4 m³/h
Max flow rate
5–45W
Power range
5 years
Warranty
Features & Benefits
✔ Permanent Magnet Motor — Auto Differential Pressure
The MP200A uses a permanent magnet (EC/brushless) motor rather than the conventional induction motor found in standard three-speed pumps. Permanent magnet motors are intrinsically more efficient across their entire operating range — not just at peak load — because they eliminate the resistive losses and slip inherent in induction motor windings. The differential pressure controller continuously monitors the pressure difference between the pump inlet and outlet and adjusts motor speed to maintain the target differential — automatically slowing down when TRVs close and reducing flow demand, and speeding up when more zones open. This self-regulation means the pump is always running at the minimum speed needed, never wasting energy pushing water around a half-closed system at full speed.
✔ Variable & Fixed Speed — One Pump for All Jobs
The MP200A offers five operating modes selectable from the front control panel: three fixed-speed settings (equivalent to the traditional speed 1/2/3 of a conventional pump, for systems that require a constant flow regardless of differential pressure) and two variable-speed automatic modes — proportional pressure and constant pressure. Proportional pressure mode (the most energy-efficient for systems with TRVs) reduces the target head as flow demand falls, tracking a sloped curve rather than maintaining a constant pressure setpoint. This eliminates the pressure surge that occurs when multiple TRVs close simultaneously on a fixed-speed pump, reducing noise and extending valve life.
✔ Plug and Pump — Pre-Wired, No Terminal Box
The MP200A is supplied pre-wired with a mains plug and connector — the cable terminates in a plug that connects to the corresponding socket on the pump body, so there is no requirement to open the terminal box and make cable connections inside the pump housing. This dramatically speeds up installation (particularly on pump replacement jobs) and reduces the risk of wiring errors inside the terminal box. The pump can be swapped in and out without an electrician on site if a suitable switched fused spur is already in place — though the electrical installation must comply with Part P of the Building Regulations.
✔ Front Control Panel — Live Power Readout
The front-mounted control panel displays the pump's current operating mode and provides real-time power consumption in watts — so the installer and homeowner can see at a glance exactly how much electricity the pump is drawing at any moment. This live watt display is particularly useful at commissioning: it confirms that the auto-pressure mode is correctly regulating, allows comparison against a fixed-speed baseline, and helps identify if the pump is working harder than expected (which may indicate a dirty filter, partially closed isolators, or other system restrictions). If a fault is detected, an error code is shown on the panel rather than the pump simply stopping.
✔ Quiet Operation — <43 dB(A)
The MP200A is rated at less than 43 dB(A) sound pressure — significantly quieter than many conventional three-speed pumps, which often produce audible flow noise and motor hum at higher speeds. The permanent magnet motor contributes to quieter operation by eliminating the magnetic noise (hum) characteristic of induction motors, and the variable speed control means the pump rarely operates at maximum speed for extended periods. Particularly noticeable in properties where the pump is located in a utility room, airing cupboard, or kitchen — environments where background noise levels are lower and pump sound is more likely to be intrusive.
✔ 110°C — 10 Bar — Wide System Compatibility
A maximum fluid temperature of 110°C and system pressure rating of 10 bar (1.0 MPa) makes the MP200A suitable for a wide range of heating applications beyond standard residential radiator circuits — including high-temperature systems, pressurised primary circuits, and solar thermal primary loops where temperatures may exceed the 95°C typical of conventional domestic boilers. The IP42 protection rating makes it suitable for standard indoor heating plant room installation. Cast iron pump body. Insulation class H for high-temperature durability. Compatible with systems using standard heating inhibitor chemicals.
Technical Specifications — Salus MP200A
Manufacturer / Model Salus Controls — MP200A
Energy Efficiency Class A (ErP Directive compliant)
Motor Type Permanent magnet (EC) with differential pressure controller
Power Supply 230V AC / 50Hz
Power Consumption (Min / Max) 5W – 45W
Max Head 6m (4–6m operating range)
Max Flow Rate 2.4 m³/h
Fluid Temperature Range +2°C to +110°C
Max System Pressure 10 bar (1.0 MPa)
Centre-to-Centre Distance 130mm
Pipe Connections Phase · Null · Earthing
Pump Body Material Cast iron
Protection Grade IP42
Insulation Class H (TF110)
Sound Pressure Level <43 dB(A)
EMC Standards EN61000-6-1 · EN61000-6-3
Supply Pre-wired with plug connector — plug and pump
Supplied With Pump · 2× seals · connector · plug · grommet · operation manual
Warranty 5 years — Salus Controls manufacturer's guarantee
Frequently Asked Questions
Will this pump fit my existing pipework? What does 130mm centre-to-centre mean?
The 130mm centre-to-centre distance refers to the spacing between the pump's inlet and outlet pipe connections — measured centre to centre, this is 130mm. This is the standard dimension for most UK domestic central heating pumps, matching the connections of Grundfos Alpha/UPS, Wilo Stratos, DAB Evosta, and most other residential pump brands. Before ordering, measure the distance between the centre of your existing pump's inlet and outlet connections — if it is 130mm, the MP200A will be a direct fit onto the existing pipework using the supplied seals. Isolate the pump using the union valves on either side, drain, swap, and refill. If your existing pump has a different centre-to-centre spacing (e.g., 180mm), the MP200A cannot be a direct replacement without replumbing the connections.
Which operating mode should I use — proportional pressure, constant pressure, or fixed speed?
For most modern domestic central heating systems with thermostatic radiator valves (TRVs), proportional pressure (auto/variable) mode is the recommended setting — it gives the greatest energy saving because it reduces both flow and pressure as TRVs close, preventing the noise and pressure surge that occur when TRVs throttle down on a fixed-speed pump. Constant pressure mode suits systems where the pressure must be held stable regardless of flow — for example, some underfloor heating systems with manifold flow regulators, or systems where proportional mode causes intermittent noise from partially-open valves. Fixed speed settings (1, 2, or 3) are for systems that genuinely require a constant flow rate — older gravity-assisted systems, some primary circuits, or where an installer specifies a fixed flow to meet a particular heat emitter design. When in doubt, start on the lowest variable mode and increase if the system fails to heat adequately.
Can I use this pump for domestic hot water circulation (secondary return)?
Yes — the MP200A is rated for fluid temperatures up to 110°C and suitable for domestic hot water secondary circulation (hot water return loops), where a small pump circulates hot water around a pipework ring so that taps receive instant hot water without a lengthy wait. The pump's cast iron body and full temperature rating make it compatible with hot water circuits. However, for potable hot water secondary return applications, consult the pump's installation manual regarding material compatibility with the specific water quality, inhibitor type, and system configuration. Some installers prefer a dedicated DHW pump — confirm the installation manual approves the intended application before fitting.
Is 6m head enough for my system?
For the vast majority of domestic central heating systems in UK properties, 6m of head is more than sufficient. A typical two-storey semi-detached house with 8–12 radiators and standard 22/15mm pipework has a calculated system resistance of approximately 2–4m head under normal flow conditions — well within the 6m maximum. Issues arise in larger systems with extensive pipework runs, small-bore (microbore) circuits, or very high numbers of radiators — in these cases a system resistance calculation should be carried out by the installing engineer. If the existing pump was running on speed 3 of a three-speed unit and still struggling to heat the system adequately, a pump with higher head may be needed. In practice, the MP200A's variable pressure control means it will deliver the available head efficiently rather than wasting energy overcoming excess resistance.
What are the ErP Directive requirements, and does this pump comply?
The EU ErP (Energy-related Products) Directive, implemented in the UK via the Energy-related Products Regulations, set minimum energy performance standards for standalone heating circulators. Since 1 January 2013, new standalone circulators for residential heating must achieve a minimum Energy Efficiency Index (EEI) to be legally placed on the market — effectively outlawing standard fixed-speed induction motor pumps. The MP200A meets these requirements and achieves ErP Class A — the top energy efficiency classification — through its permanent magnet motor and automatic variable-speed control. Replacing a pre-2013 three-speed pump with an ErP-compliant Class A unit like the MP200A is also a requirement when upgrading heating systems under current Building Regulations Part L (conservation of fuel and power) in most replacement scenarios.

Product Information

Shipping & Returns

Description

The Salus MP200A is an ErP Energy Efficiency Class A circulating pump for domestic central heating and hot water systems — designed to replace standard three-speed pumps with a single, self-regulating unit that covers every job. Built around a permanent magnet motor with differential pressure controller, it automatically and continuously adjusts its output to match the actual demand of the heating circuit — delivering precisely the flow and head the system needs at any given moment, rather than running at a fixed speed regardless of demand. The result is significantly lower electricity consumption: the pump draws between just 5W and 45W depending on operating conditions, compared to 60–100W typical of a conventional three-speed pump at fixed speed. Maximum head 6m, maximum flow 2.4 m³/h, maximum water temperature 110°C. Supplied pre-wired with a plug connector — no terminal box opening required. Suitable for 130mm centre-to-centre pipework. 5-year Salus warranty.

ℹ ErP Class A vs Old Three-Speed Pumps — What the Saving Looks Like
The EU ErP Directive (Energy-related Products) set Minimum Energy Performance Standards for heating circulators that effectively banned inefficient fixed-speed pumps from 2013 onward. A Class A rated pump like the MP200A meets these standards through a permanent magnet motor and variable pressure control. In practical terms: a conventional three-speed pump running continuously at speed 2 (typical setting) consumes around 60–80W, adding roughly £100–£130/year to the electricity bill. The MP200A typically runs at 5–25W under normal residential loads — often cutting pump electricity costs by 70–80% versus what it replaces.
ErP Class A
Energy rated
4–6m
Head range
2.4 m³/h
Max flow rate
5–45W
Power range
5 years
Warranty
Features & Benefits
✔ Permanent Magnet Motor — Auto Differential Pressure
The MP200A uses a permanent magnet (EC/brushless) motor rather than the conventional induction motor found in standard three-speed pumps. Permanent magnet motors are intrinsically more efficient across their entire operating range — not just at peak load — because they eliminate the resistive losses and slip inherent in induction motor windings. The differential pressure controller continuously monitors the pressure difference between the pump inlet and outlet and adjusts motor speed to maintain the target differential — automatically slowing down when TRVs close and reducing flow demand, and speeding up when more zones open. This self-regulation means the pump is always running at the minimum speed needed, never wasting energy pushing water around a half-closed system at full speed.
✔ Variable & Fixed Speed — One Pump for All Jobs
The MP200A offers five operating modes selectable from the front control panel: three fixed-speed settings (equivalent to the traditional speed 1/2/3 of a conventional pump, for systems that require a constant flow regardless of differential pressure) and two variable-speed automatic modes — proportional pressure and constant pressure. Proportional pressure mode (the most energy-efficient for systems with TRVs) reduces the target head as flow demand falls, tracking a sloped curve rather than maintaining a constant pressure setpoint. This eliminates the pressure surge that occurs when multiple TRVs close simultaneously on a fixed-speed pump, reducing noise and extending valve life.
✔ Plug and Pump — Pre-Wired, No Terminal Box
The MP200A is supplied pre-wired with a mains plug and connector — the cable terminates in a plug that connects to the corresponding socket on the pump body, so there is no requirement to open the terminal box and make cable connections inside the pump housing. This dramatically speeds up installation (particularly on pump replacement jobs) and reduces the risk of wiring errors inside the terminal box. The pump can be swapped in and out without an electrician on site if a suitable switched fused spur is already in place — though the electrical installation must comply with Part P of the Building Regulations.
✔ Front Control Panel — Live Power Readout
The front-mounted control panel displays the pump's current operating mode and provides real-time power consumption in watts — so the installer and homeowner can see at a glance exactly how much electricity the pump is drawing at any moment. This live watt display is particularly useful at commissioning: it confirms that the auto-pressure mode is correctly regulating, allows comparison against a fixed-speed baseline, and helps identify if the pump is working harder than expected (which may indicate a dirty filter, partially closed isolators, or other system restrictions). If a fault is detected, an error code is shown on the panel rather than the pump simply stopping.
✔ Quiet Operation — <43 dB(A)
The MP200A is rated at less than 43 dB(A) sound pressure — significantly quieter than many conventional three-speed pumps, which often produce audible flow noise and motor hum at higher speeds. The permanent magnet motor contributes to quieter operation by eliminating the magnetic noise (hum) characteristic of induction motors, and the variable speed control means the pump rarely operates at maximum speed for extended periods. Particularly noticeable in properties where the pump is located in a utility room, airing cupboard, or kitchen — environments where background noise levels are lower and pump sound is more likely to be intrusive.
✔ 110°C — 10 Bar — Wide System Compatibility
A maximum fluid temperature of 110°C and system pressure rating of 10 bar (1.0 MPa) makes the MP200A suitable for a wide range of heating applications beyond standard residential radiator circuits — including high-temperature systems, pressurised primary circuits, and solar thermal primary loops where temperatures may exceed the 95°C typical of conventional domestic boilers. The IP42 protection rating makes it suitable for standard indoor heating plant room installation. Cast iron pump body. Insulation class H for high-temperature durability. Compatible with systems using standard heating inhibitor chemicals.
Technical Specifications — Salus MP200A
Manufacturer / Model Salus Controls — MP200A
Energy Efficiency Class A (ErP Directive compliant)
Motor Type Permanent magnet (EC) with differential pressure controller
Power Supply 230V AC / 50Hz
Power Consumption (Min / Max) 5W – 45W
Max Head 6m (4–6m operating range)
Max Flow Rate 2.4 m³/h
Fluid Temperature Range +2°C to +110°C
Max System Pressure 10 bar (1.0 MPa)
Centre-to-Centre Distance 130mm
Pipe Connections Phase · Null · Earthing
Pump Body Material Cast iron
Protection Grade IP42
Insulation Class H (TF110)
Sound Pressure Level <43 dB(A)
EMC Standards EN61000-6-1 · EN61000-6-3
Supply Pre-wired with plug connector — plug and pump
Supplied With Pump · 2× seals · connector · plug · grommet · operation manual
Warranty 5 years — Salus Controls manufacturer's guarantee
Frequently Asked Questions
Will this pump fit my existing pipework? What does 130mm centre-to-centre mean?
The 130mm centre-to-centre distance refers to the spacing between the pump's inlet and outlet pipe connections — measured centre to centre, this is 130mm. This is the standard dimension for most UK domestic central heating pumps, matching the connections of Grundfos Alpha/UPS, Wilo Stratos, DAB Evosta, and most other residential pump brands. Before ordering, measure the distance between the centre of your existing pump's inlet and outlet connections — if it is 130mm, the MP200A will be a direct fit onto the existing pipework using the supplied seals. Isolate the pump using the union valves on either side, drain, swap, and refill. If your existing pump has a different centre-to-centre spacing (e.g., 180mm), the MP200A cannot be a direct replacement without replumbing the connections.
Which operating mode should I use — proportional pressure, constant pressure, or fixed speed?
For most modern domestic central heating systems with thermostatic radiator valves (TRVs), proportional pressure (auto/variable) mode is the recommended setting — it gives the greatest energy saving because it reduces both flow and pressure as TRVs close, preventing the noise and pressure surge that occur when TRVs throttle down on a fixed-speed pump. Constant pressure mode suits systems where the pressure must be held stable regardless of flow — for example, some underfloor heating systems with manifold flow regulators, or systems where proportional mode causes intermittent noise from partially-open valves. Fixed speed settings (1, 2, or 3) are for systems that genuinely require a constant flow rate — older gravity-assisted systems, some primary circuits, or where an installer specifies a fixed flow to meet a particular heat emitter design. When in doubt, start on the lowest variable mode and increase if the system fails to heat adequately.
Can I use this pump for domestic hot water circulation (secondary return)?
Yes — the MP200A is rated for fluid temperatures up to 110°C and suitable for domestic hot water secondary circulation (hot water return loops), where a small pump circulates hot water around a pipework ring so that taps receive instant hot water without a lengthy wait. The pump's cast iron body and full temperature rating make it compatible with hot water circuits. However, for potable hot water secondary return applications, consult the pump's installation manual regarding material compatibility with the specific water quality, inhibitor type, and system configuration. Some installers prefer a dedicated DHW pump — confirm the installation manual approves the intended application before fitting.
Is 6m head enough for my system?
For the vast majority of domestic central heating systems in UK properties, 6m of head is more than sufficient. A typical two-storey semi-detached house with 8–12 radiators and standard 22/15mm pipework has a calculated system resistance of approximately 2–4m head under normal flow conditions — well within the 6m maximum. Issues arise in larger systems with extensive pipework runs, small-bore (microbore) circuits, or very high numbers of radiators — in these cases a system resistance calculation should be carried out by the installing engineer. If the existing pump was running on speed 3 of a three-speed unit and still struggling to heat the system adequately, a pump with higher head may be needed. In practice, the MP200A's variable pressure control means it will deliver the available head efficiently rather than wasting energy overcoming excess resistance.
What are the ErP Directive requirements, and does this pump comply?
The EU ErP (Energy-related Products) Directive, implemented in the UK via the Energy-related Products Regulations, set minimum energy performance standards for standalone heating circulators. Since 1 January 2013, new standalone circulators for residential heating must achieve a minimum Energy Efficiency Index (EEI) to be legally placed on the market — effectively outlawing standard fixed-speed induction motor pumps. The MP200A meets these requirements and achieves ErP Class A — the top energy efficiency classification — through its permanent magnet motor and automatic variable-speed control. Replacing a pre-2013 three-speed pump with an ErP-compliant Class A unit like the MP200A is also a requirement when upgrading heating systems under current Building Regulations Part L (conservation of fuel and power) in most replacement scenarios.