Tritherm Single Circuit Mixing Valve (No Pump)
£93.60 incl. VAT
Tritherm Single Room UFH Control Pack A complete, pre-assembled control unit for single-room underfloor heating zones up to 40sqm. Features a high-performance thermostatic blending valve (35°C–60°C) and integral isolation valves.
The Tritherm Single Room Control Pack is a comprehensive solution designed to provide temperature-controlled mixed water for single-room underfloor heating applications. Ideal for extensions, conservatories, or renovation projects, this unit covers areas up to 40 square meters with a heat output of up to 3kW.
This pack is available with two high-performance pump options to suit your specific requirements: the premium Grundfos UPM3 Flex AS, Wilo Para Sc or the cost-effective Bastion ZL-3002.
Key Product Features
| Feature | Detail | Benefit |
| Pump Options | Grundfos or Bastion | Choice between market-leading premium or high-efficiency value pumps. |
| Coverage | Up to 40 sqm (3kW) | Perfect for single zones like kitchens, bathrooms, or extensions. |
| Mixing Control | Thermostatic Valve | Adjustable from 35°C to 60°C (Factory set at 43°C). |
| Connections | Integral Ball Valves | Allows easy connection and isolation from the primary heating system. |
| Mounting | Anti-vibration Bracket | Ensures silent operation; can be mounted horizontally or vertically. |
| Accuracy | +/- 2°C | Maintains stable temperature even with fluctuating boiler flow. |
Pump Variations
You can select the pump that best fits your installation needs. Both options are 130mm port-to-port and fully compatible with the control pack.
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Option 1: Grundfos UPM3 Flex AS (Premium)
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Description: A market-leading, intelligent circulating pump.
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Max Head: 7 meters (Adjustable 4m, 5m, 6m, 7m).
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Features: PWM signal control, push-button interface, and LED diagnostics.
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Best For: Systems requiring maximum reliability, higher pressure (7m), or integration with smart controls.
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Option 2: Bastion ZL-3002 (Value)
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Description: A robust, high-efficiency pump fully compliant with ErP standards.
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Max Head: 6 meters.
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Features: Simple push-button control with dedicated modes for Underfloor Heating (Constant Pressure) and Radiators.
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Best For: Standard installations where cost-effectiveness and ease of use are priorities.
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Option 3: Wilo Para SC (Reliability)
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Max Head: Available in 6m (Standard) or 8m (High Power).
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Description: Features “Green Button” technology for simple setup and a rust-free composite housing.
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Best For: Durability and simple, tool-free operation.
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Technical Specifications
| Detail | Specification |
| Maximum Static Pressure | 10 bar |
| Control Range | 35°C to 60°C |
| Factory Pre-set | 43°C |
| Primary Connections | 15mm Compression (via ball valves) |
| UFH Connections | G 1/2″ Female (tappings provided for adaptors) |
| Heat Output | Up to 3kW |
| Voltage | 230V AC 50Hz (3 Amp fused spur required) |
Application & Temperature Settings
The thermostatic blending valve ensures water temperature remains safe for various floor finishes.
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Screeded Floors: Recommended setting 40-45°C.
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Timber Floors: Recommended setting 55-60°C.
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Safety Limit: Floor surface temperature should not exceed 29°C (27°C for timber/laminate) to prevent discomfort or material damage.
Hydraulic Performance Comparison
The graph below compares the hydraulic performance of the two pump options. The Grundfos UPM3 Flex offers slightly higher performance with a maximum head of 7 meters compared to the Bastion’s 6 meters, providing extra power for longer pipe loops if required.
| Flow Q (m³/h) | Bastion Head (m) | Grundfos Head (m) |
| 0.0 | 6.0 | 7.0 |
| 1.0 | 4.8 | 6.0 |
| 2.0 | 2.5 | 4.0 |
| 3.0 | 0.5 | 1.8 |
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