Tritherm Single Circuit Pump and Mixing Valve Pack
Price range: £174.99 through £212.80 excl VAT
- Compact control unit for single-room underfloor heating (up to 40sqm).
- Features adjustable thermostatic blending (35°C-60°C)
- Choice of Grundfos, Wilo, or Bastion high-efficiency pumps.
The Tritherm UFH Heating Single Room Control Pack is a compact, bolt-on solution designed to provide temperature-controlled mixed water for single-room underfloor heating applications. Ideal for extensions, conservatories, or small renovations, this unit covers areas up to 40 square meters with a heat output of up to 3kW.
The pack blends hot water from the primary heating system with cooler return water to maintain a safe, constant temperature within the underfloor loops. It is available with one of three industry-leading pumps: Grundfos, Wilo, or Bastion, allowing you to choose the best option for your specific requirements.
Key Product Features
| Feature | Detail | Benefit |
| Pump Choice | Grundfos / Wilo / Bastion |
Select from three high-efficiency, ‘A’ rated 6-meter circulating pumps to suit your preference3.
|
| Coverage | Up to 40 sqm (3kW) |
Perfect for single rooms, conservatories, or extensions4.
|
| Mixing Control | Thermostatic Valve |
Adjustable from 35°C to 60°C (Factory set at 43°C)55.
|
| Connections | Integral Ball Valves |
Allows easy connection and isolation from the primary heating system6.
|
| Mounting | Anti-vibration Bracket |
Ensures silent operation; can be mounted horizontally or vertically777.
|
| Accuracy | +/- 2°C |
Maintains stable temperature even with fluctuating boiler flow8. |
Versatile Pump Options
To ensure maximum flexibility and reliability, the ZL-2532 is compatible with three distinct high-efficiency pumps. All options are pre-wired for easy installation.
- Grundfos UPM3 Flex AS: A market-leading pump featuring intelligent PWM signal control and speed selection for optimal energy efficiency.
- Wilo A Rated: A robust and compact pump utilizing “Green Button” technology for simple setting changes between variable and constant pressure modes.
- Bastion A Rated: A cost-effective, energy-compliant alternative (EEI ≤ 0.20) featuring specific modes for underfloor heating applications.
Technical Specifications
| Detail | Specification |
| Maximum Static Pressure | 10 bar |
| Control Range |
35°C to 60°C 13
|
| Factory Pre-set |
43°C 14
|
| Primary Connections |
15mm Compression (via ball valves) 15
|
| UFH Connections |
G 1/2″ Female (tappings provided for adaptors) 16
|
| Heat Output |
Up to 3kW 17
|
| Voltage |
230V AC 50Hz (3 Amp fused spur required) 18 |
Application & Temperature Settings
The thermostatic blending valve ensures water temperature remains safe for various floor finishes.
- Screeded Floors: Recommended setting 40-45°C.
- Timber Floors: Recommended setting 55-60°C.
- Safety Limit: Floor surface temperature should not exceed 29°C (27°C for timber/laminate) to prevent discomfort or material damage.
Hydraulic Performance (Pump Curve)
The following table approximates the hydraulic performance for the 6-meter head pumps (Grundfos, Wilo, and Bastion) used in these packs. This data helps confirm the pump can handle the pressure drops in typical single-room loops.
Head vs. Flow Characteristics
| Flow Q (m³/h) | Head H (m) | Application Note |
| 0.0 | 6.0 | Max Head (Closed Valve) |
| 0.5 | 5.5 | High Resistance Loops |
| 1.0 | 4.5 | Standard Single Room Loop |
| 1.5 | 3.5 | Larger Extensions |
| 2.0 | 2.5 | Max Recommended Flow |
| 3.0 | 0.5 | Max Volume Flow |
| Pump | System + Wilo A Rated 6m, System + Grundfos UPM3, System + Bastion A Rated 6m |
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