ENGO E30NC-230 Thermal Actuator 230V M30x1.5 – Normally Closed UFH Actuator for Underfloor Heating Manifolds
ENGO E30NC-230 Thermal Actuator 230V M30x1.5 – Normally Closed UFH Actuator for Underfloor Heating Manifolds
The ENGO E30NC-230 is a 230V normally-closed thermal actuator designed for underfloor heating manifolds. With its M30×1.5 thread, it fits the vast majority of UK and European UFH manifolds straight out of the box — including systems by Heatmiser, Polypipe, and Emmeti. At only 2 W running power and IP54 rated, it provides reliable, low-energy zone control for residential and commercial wet UFH installations.
Why Choose the ENGO E30NC-230?
Valve opens when powered — fails safe to closed if power is lost, preventing uncontrolled heat flow.
Compatible with the majority of UK UFH manifolds as a direct drop-in replacement for worn or defective actuators.
Minimal energy draw per zone — ideal for large multi-zone systems where actuator power adds up.
Dust and splash resistant — suitable for manifold enclosures in plant rooms, utility cupboards, or underfloor voids.
Automatically bleeds the actuator on first installation to ensure the flow path is fully open from the start.
Small footprint allows easy installation on densely packed manifolds without tools or adaptors.
ENGO back the E30NC-230 with a full 5-year manufacturer's warranty for long-term peace of mind.
Pairs with ENGO wiring centres (ECB8-230, ECB62-ZB) and smart thermostats for full app-controlled zone management.
Suitable For
About the E30NC-230
The E30NC-230 is a thermoelectric (wax motor) actuator operating on 230V AC. In the normally-closed configuration, the valve is held shut when unpowered and opens when the thermostat calls for heat — this is the standard mode used with most UK underfloor heating wiring centres and thermostats. Once the heating demand is met and the thermostat switches off, the actuator returns to its closed position without any spring mechanism or manual intervention.
Most UK underfloor heating systems use Normally Closed (NC) actuators — this means the manifold port is closed when the actuator has no power, and opens when the zone thermostat calls for heat. This is the correct type for use with ENGO wiring centres (ECB8-230, ECB62-ZB) and most other standard UFH control boxes. If you are unsure, check your existing actuator or wiring centre manual.
The M30×1.5 thread is the most widely used standard in the UK UFH market, making the E30NC-230 a universal drop-in replacement for actuators from Heatmiser, Polypipe, Emmeti, Honeywell, and other major brands. Installation takes seconds — simply screw onto the manifold port and connect the 90 cm lead to the wiring centre.
The built-in "First Open" function provides an automatic bleed on first power-up, ensuring the flow path through the manifold is clear before the system enters normal operation. This prevents air-lock issues that can occur in new installations.
Combine the E30NC-230 with ENGO wiring centres and thermostats for a complete multi-zone smart heating system. The ECB8-230 (8-zone wired) and ECB62-ZB (6 wireless ZigBee + 2 wired zones) are designed to work directly with this actuator. Add ENGO smart thermostats (EONE series, E25, or E901-RF) for app control, scheduling, and voice control via Alexa and Google Assistant via the EGATE-PRO gateway.
Key Features
- Normally Closed (NC) — opens when 230V AC is applied
- M30×1.5 thread — compatible with most UK and EU UFH manifolds
- 230V AC 50Hz power supply
- Ultra-low 2 W running power consumption
- 300 mA inrush current for 200 ms on startup
- 100 N pressing force (±20%) for reliable valve actuation
- 4.5 mm maximum stroke
- "First Open" function — automatic bleed on first installation
- Fast opening time
- IP54 dust and splash protection
- Class II insulation (no earth required)
- 90 cm cable with plug-in connections
- Compact Φ41 × 65 mm body
- Maximum ambient operating temperature: 60°C
- Storage temperature range: −25°C to +60°C
- Compatible with ENGO ECB8-230, ECB62-ZB wiring centres
- Direct replacement for most branded NC actuators
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E30NC-230 |
| Type | Thermoelectric actuator — Normally Closed (NC) |
| Thread Size | M30 × 1.5 mm |
| Power Supply | 230V AC / 50Hz |
| Power Consumption (running) | 2 W |
| Inrush Current | 300 mA / 200 ms |
| Pressing Force | 100 N ±20% |
| Maximum Stroke | 4.5 mm |
| Cable Length | 90 cm |
| IP Protection | IP54 |
| Insulation Class | Class II (no earth required) |
| Maximum Ambient Temperature | 60°C |
| Storage Temperature | −25°C to +60°C |
| Dimensions | Φ41 × 65 mm |
| Warranty | 5 years |
Installation & Compatibility Notes
Installation must be carried out by a qualified person in accordance with BS 7671 (IET Wiring Regulations) and the manifold or wiring centre manufacturer's instructions. The 230V supply to the actuator is typically switched by the zone output of the UFH wiring centre — never connect actuators directly to mains without appropriate switching.
- Disconnect the 230V supply before fitting or removing any actuator
- Screw the actuator clockwise onto the M30×1.5 manifold valve insert until finger-tight; no tools required
- Connect the 90 cm lead to the corresponding zone output on the wiring centre
- On first power-up, the "First Open" function will automatically exercise the valve — allow 5 minutes for this process to complete
- Each zone output on the ECB8-230 can support up to 6 actuators at 2 W each (within the 12 W per-zone rating)
- For more than 6 actuators on a single zone, use an additional relay (e.g. ENGO ERM-12A) to distribute the load
- Ensure manifold insert pin height is within range for correct actuation (typically 10–15 mm in the open position)
Frequently Asked Questions
Is this the right actuator for my system?
If your manifold has M30×1.5 threaded insert caps and your wiring centre uses 230V AC switching (e.g. ENGO ECB8-230, Heatmiser, Honeywell), then yes — the E30NC-230 is directly compatible. Check whether your system needs NC (normally closed) or NO (normally open) type; most UK UFH systems use NC.
Can I use this with any UFH wiring centre?
Yes, provided the wiring centre uses 230V AC zone outputs for actuators. It will work with ENGO, Heatmiser, Honeywell, Danfoss, Emmeti, and most other brands as a direct replacement.
Does the E30NC-230 work with 24V systems?
No — this model is 230V AC only. For 24V systems, use the ENGO E30NC-24 actuator instead.
How many actuators can I connect per zone?
Up to 6 actuators at 2 W each per zone on the ENGO ECB8-230 wiring centre. For more, add an ENGO ERM-12A relay module to share the load.
Is this the same as the normally open (NO) version?
No — NC (normally closed) means the valve closes when power is removed. The NO (normally open) version, E30NO-230, does the opposite. Most UK UFH systems require NC actuators.
What is the "First Open" function?
On first power-up, the actuator automatically exercises the valve to its fully open position, purging any air from the manifold circuit. This eliminates the need for manual bleeding during commissioning.
What's in the Box
- 1× ENGO E30NC-230 thermal actuator with 90 cm lead
- Quick installation guide
Installation must be performed by a qualified person in accordance with BS 7671. This actuator operates at 230V AC — disconnect power before fitting. Compatible with NC-type wiring centres only. Also available: E30NO-230 (normally open) and E30NC-24 (24V version).
Original: $20.25
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ENGO E30NC-230 Thermal Actuator 230V M30x1.5 – Normally Closed UFH Actuator for Underfloor Heating Manifolds
The ENGO E30NC-230 is a 230V normally-closed thermal actuator designed for underfloor heating manifolds. With its M30×1.5 thread, it fits the vast majority of UK and European UFH manifolds straight out of the box — including systems by Heatmiser, Polypipe, and Emmeti. At only 2 W running power and IP54 rated, it provides reliable, low-energy zone control for residential and commercial wet UFH installations.
Why Choose the ENGO E30NC-230?
Valve opens when powered — fails safe to closed if power is lost, preventing uncontrolled heat flow.
Compatible with the majority of UK UFH manifolds as a direct drop-in replacement for worn or defective actuators.
Minimal energy draw per zone — ideal for large multi-zone systems where actuator power adds up.
Dust and splash resistant — suitable for manifold enclosures in plant rooms, utility cupboards, or underfloor voids.
Automatically bleeds the actuator on first installation to ensure the flow path is fully open from the start.
Small footprint allows easy installation on densely packed manifolds without tools or adaptors.
ENGO back the E30NC-230 with a full 5-year manufacturer's warranty for long-term peace of mind.
Pairs with ENGO wiring centres (ECB8-230, ECB62-ZB) and smart thermostats for full app-controlled zone management.
Suitable For
About the E30NC-230
The E30NC-230 is a thermoelectric (wax motor) actuator operating on 230V AC. In the normally-closed configuration, the valve is held shut when unpowered and opens when the thermostat calls for heat — this is the standard mode used with most UK underfloor heating wiring centres and thermostats. Once the heating demand is met and the thermostat switches off, the actuator returns to its closed position without any spring mechanism or manual intervention.
Most UK underfloor heating systems use Normally Closed (NC) actuators — this means the manifold port is closed when the actuator has no power, and opens when the zone thermostat calls for heat. This is the correct type for use with ENGO wiring centres (ECB8-230, ECB62-ZB) and most other standard UFH control boxes. If you are unsure, check your existing actuator or wiring centre manual.
The M30×1.5 thread is the most widely used standard in the UK UFH market, making the E30NC-230 a universal drop-in replacement for actuators from Heatmiser, Polypipe, Emmeti, Honeywell, and other major brands. Installation takes seconds — simply screw onto the manifold port and connect the 90 cm lead to the wiring centre.
The built-in "First Open" function provides an automatic bleed on first power-up, ensuring the flow path through the manifold is clear before the system enters normal operation. This prevents air-lock issues that can occur in new installations.
Combine the E30NC-230 with ENGO wiring centres and thermostats for a complete multi-zone smart heating system. The ECB8-230 (8-zone wired) and ECB62-ZB (6 wireless ZigBee + 2 wired zones) are designed to work directly with this actuator. Add ENGO smart thermostats (EONE series, E25, or E901-RF) for app control, scheduling, and voice control via Alexa and Google Assistant via the EGATE-PRO gateway.
Key Features
- Normally Closed (NC) — opens when 230V AC is applied
- M30×1.5 thread — compatible with most UK and EU UFH manifolds
- 230V AC 50Hz power supply
- Ultra-low 2 W running power consumption
- 300 mA inrush current for 200 ms on startup
- 100 N pressing force (±20%) for reliable valve actuation
- 4.5 mm maximum stroke
- "First Open" function — automatic bleed on first installation
- Fast opening time
- IP54 dust and splash protection
- Class II insulation (no earth required)
- 90 cm cable with plug-in connections
- Compact Φ41 × 65 mm body
- Maximum ambient operating temperature: 60°C
- Storage temperature range: −25°C to +60°C
- Compatible with ENGO ECB8-230, ECB62-ZB wiring centres
- Direct replacement for most branded NC actuators
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E30NC-230 |
| Type | Thermoelectric actuator — Normally Closed (NC) |
| Thread Size | M30 × 1.5 mm |
| Power Supply | 230V AC / 50Hz |
| Power Consumption (running) | 2 W |
| Inrush Current | 300 mA / 200 ms |
| Pressing Force | 100 N ±20% |
| Maximum Stroke | 4.5 mm |
| Cable Length | 90 cm |
| IP Protection | IP54 |
| Insulation Class | Class II (no earth required) |
| Maximum Ambient Temperature | 60°C |
| Storage Temperature | −25°C to +60°C |
| Dimensions | Φ41 × 65 mm |
| Warranty | 5 years |
Installation & Compatibility Notes
Installation must be carried out by a qualified person in accordance with BS 7671 (IET Wiring Regulations) and the manifold or wiring centre manufacturer's instructions. The 230V supply to the actuator is typically switched by the zone output of the UFH wiring centre — never connect actuators directly to mains without appropriate switching.
- Disconnect the 230V supply before fitting or removing any actuator
- Screw the actuator clockwise onto the M30×1.5 manifold valve insert until finger-tight; no tools required
- Connect the 90 cm lead to the corresponding zone output on the wiring centre
- On first power-up, the "First Open" function will automatically exercise the valve — allow 5 minutes for this process to complete
- Each zone output on the ECB8-230 can support up to 6 actuators at 2 W each (within the 12 W per-zone rating)
- For more than 6 actuators on a single zone, use an additional relay (e.g. ENGO ERM-12A) to distribute the load
- Ensure manifold insert pin height is within range for correct actuation (typically 10–15 mm in the open position)
Frequently Asked Questions
Is this the right actuator for my system?
If your manifold has M30×1.5 threaded insert caps and your wiring centre uses 230V AC switching (e.g. ENGO ECB8-230, Heatmiser, Honeywell), then yes — the E30NC-230 is directly compatible. Check whether your system needs NC (normally closed) or NO (normally open) type; most UK UFH systems use NC.
Can I use this with any UFH wiring centre?
Yes, provided the wiring centre uses 230V AC zone outputs for actuators. It will work with ENGO, Heatmiser, Honeywell, Danfoss, Emmeti, and most other brands as a direct replacement.
Does the E30NC-230 work with 24V systems?
No — this model is 230V AC only. For 24V systems, use the ENGO E30NC-24 actuator instead.
How many actuators can I connect per zone?
Up to 6 actuators at 2 W each per zone on the ENGO ECB8-230 wiring centre. For more, add an ENGO ERM-12A relay module to share the load.
Is this the same as the normally open (NO) version?
No — NC (normally closed) means the valve closes when power is removed. The NO (normally open) version, E30NO-230, does the opposite. Most UK UFH systems require NC actuators.
What is the "First Open" function?
On first power-up, the actuator automatically exercises the valve to its fully open position, purging any air from the manifold circuit. This eliminates the need for manual bleeding during commissioning.
What's in the Box
- 1× ENGO E30NC-230 thermal actuator with 90 cm lead
- Quick installation guide
Installation must be performed by a qualified person in accordance with BS 7671. This actuator operates at 230V AC — disconnect power before fitting. Compatible with NC-type wiring centres only. Also available: E30NO-230 (normally open) and E30NC-24 (24V version).
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The ENGO E30NC-230 is a 230V normally-closed thermal actuator designed for underfloor heating manifolds. With its M30×1.5 thread, it fits the vast majority of UK and European UFH manifolds straight out of the box — including systems by Heatmiser, Polypipe, and Emmeti. At only 2 W running power and IP54 rated, it provides reliable, low-energy zone control for residential and commercial wet UFH installations.
Why Choose the ENGO E30NC-230?
Valve opens when powered — fails safe to closed if power is lost, preventing uncontrolled heat flow.
Compatible with the majority of UK UFH manifolds as a direct drop-in replacement for worn or defective actuators.
Minimal energy draw per zone — ideal for large multi-zone systems where actuator power adds up.
Dust and splash resistant — suitable for manifold enclosures in plant rooms, utility cupboards, or underfloor voids.
Automatically bleeds the actuator on first installation to ensure the flow path is fully open from the start.
Small footprint allows easy installation on densely packed manifolds without tools or adaptors.
ENGO back the E30NC-230 with a full 5-year manufacturer's warranty for long-term peace of mind.
Pairs with ENGO wiring centres (ECB8-230, ECB62-ZB) and smart thermostats for full app-controlled zone management.
Suitable For
About the E30NC-230
The E30NC-230 is a thermoelectric (wax motor) actuator operating on 230V AC. In the normally-closed configuration, the valve is held shut when unpowered and opens when the thermostat calls for heat — this is the standard mode used with most UK underfloor heating wiring centres and thermostats. Once the heating demand is met and the thermostat switches off, the actuator returns to its closed position without any spring mechanism or manual intervention.
Most UK underfloor heating systems use Normally Closed (NC) actuators — this means the manifold port is closed when the actuator has no power, and opens when the zone thermostat calls for heat. This is the correct type for use with ENGO wiring centres (ECB8-230, ECB62-ZB) and most other standard UFH control boxes. If you are unsure, check your existing actuator or wiring centre manual.
The M30×1.5 thread is the most widely used standard in the UK UFH market, making the E30NC-230 a universal drop-in replacement for actuators from Heatmiser, Polypipe, Emmeti, Honeywell, and other major brands. Installation takes seconds — simply screw onto the manifold port and connect the 90 cm lead to the wiring centre.
The built-in "First Open" function provides an automatic bleed on first power-up, ensuring the flow path through the manifold is clear before the system enters normal operation. This prevents air-lock issues that can occur in new installations.
Combine the E30NC-230 with ENGO wiring centres and thermostats for a complete multi-zone smart heating system. The ECB8-230 (8-zone wired) and ECB62-ZB (6 wireless ZigBee + 2 wired zones) are designed to work directly with this actuator. Add ENGO smart thermostats (EONE series, E25, or E901-RF) for app control, scheduling, and voice control via Alexa and Google Assistant via the EGATE-PRO gateway.
Key Features
- Normally Closed (NC) — opens when 230V AC is applied
- M30×1.5 thread — compatible with most UK and EU UFH manifolds
- 230V AC 50Hz power supply
- Ultra-low 2 W running power consumption
- 300 mA inrush current for 200 ms on startup
- 100 N pressing force (±20%) for reliable valve actuation
- 4.5 mm maximum stroke
- "First Open" function — automatic bleed on first installation
- Fast opening time
- IP54 dust and splash protection
- Class II insulation (no earth required)
- 90 cm cable with plug-in connections
- Compact Φ41 × 65 mm body
- Maximum ambient operating temperature: 60°C
- Storage temperature range: −25°C to +60°C
- Compatible with ENGO ECB8-230, ECB62-ZB wiring centres
- Direct replacement for most branded NC actuators
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E30NC-230 |
| Type | Thermoelectric actuator — Normally Closed (NC) |
| Thread Size | M30 × 1.5 mm |
| Power Supply | 230V AC / 50Hz |
| Power Consumption (running) | 2 W |
| Inrush Current | 300 mA / 200 ms |
| Pressing Force | 100 N ±20% |
| Maximum Stroke | 4.5 mm |
| Cable Length | 90 cm |
| IP Protection | IP54 |
| Insulation Class | Class II (no earth required) |
| Maximum Ambient Temperature | 60°C |
| Storage Temperature | −25°C to +60°C |
| Dimensions | Φ41 × 65 mm |
| Warranty | 5 years |
Installation & Compatibility Notes
Installation must be carried out by a qualified person in accordance with BS 7671 (IET Wiring Regulations) and the manifold or wiring centre manufacturer's instructions. The 230V supply to the actuator is typically switched by the zone output of the UFH wiring centre — never connect actuators directly to mains without appropriate switching.
- Disconnect the 230V supply before fitting or removing any actuator
- Screw the actuator clockwise onto the M30×1.5 manifold valve insert until finger-tight; no tools required
- Connect the 90 cm lead to the corresponding zone output on the wiring centre
- On first power-up, the "First Open" function will automatically exercise the valve — allow 5 minutes for this process to complete
- Each zone output on the ECB8-230 can support up to 6 actuators at 2 W each (within the 12 W per-zone rating)
- For more than 6 actuators on a single zone, use an additional relay (e.g. ENGO ERM-12A) to distribute the load
- Ensure manifold insert pin height is within range for correct actuation (typically 10–15 mm in the open position)
Frequently Asked Questions
Is this the right actuator for my system?
If your manifold has M30×1.5 threaded insert caps and your wiring centre uses 230V AC switching (e.g. ENGO ECB8-230, Heatmiser, Honeywell), then yes — the E30NC-230 is directly compatible. Check whether your system needs NC (normally closed) or NO (normally open) type; most UK UFH systems use NC.
Can I use this with any UFH wiring centre?
Yes, provided the wiring centre uses 230V AC zone outputs for actuators. It will work with ENGO, Heatmiser, Honeywell, Danfoss, Emmeti, and most other brands as a direct replacement.
Does the E30NC-230 work with 24V systems?
No — this model is 230V AC only. For 24V systems, use the ENGO E30NC-24 actuator instead.
How many actuators can I connect per zone?
Up to 6 actuators at 2 W each per zone on the ENGO ECB8-230 wiring centre. For more, add an ENGO ERM-12A relay module to share the load.
Is this the same as the normally open (NO) version?
No — NC (normally closed) means the valve closes when power is removed. The NO (normally open) version, E30NO-230, does the opposite. Most UK UFH systems require NC actuators.
What is the "First Open" function?
On first power-up, the actuator automatically exercises the valve to its fully open position, purging any air from the manifold circuit. This eliminates the need for manual bleeding during commissioning.
What's in the Box
- 1× ENGO E30NC-230 thermal actuator with 90 cm lead
- Quick installation guide
Installation must be performed by a qualified person in accordance with BS 7671. This actuator operates at 230V AC — disconnect power before fitting. Compatible with NC-type wiring centres only. Also available: E30NO-230 (normally open) and E30NC-24 (24V version).
