Varmax floor standing boiler
Floor standing, high output condensing boiler with a stainless steel heat exchanger.
New larger models added November 2020 - The range consists of 10 single boilers with outputs (at 50/30°C) of 127, 148, 191, 238, 290, 338, 415, 478, 558, 637kW.
Product information
- Improved efficiency on split temperature systems due to high and low temperature return connections.
- Non-dependent on system flow allowing wide differential temperatures.
- Easier installation with no requirement for dedicated primary circuit and no minimum flow rates.
- Tolerant to a wide range of system water conditions with a corrosion resistant stainless steel heat exchanger.
- Long life backed up by a 5-year heat exchanger warranty.
- Well insulated for low standby losses.
- NOx emissions comply with ErP legislation lower than 56mg/kWh.
- Match heating system loads accurately with outputs up to 637kW from a single boiler and ability to cascade multiple boilers.
- Simplified flue system design as the flue gas non-return valve is built in to provide effective protection from re-circulation of flue gases through non-firing boilers.
- Built in boiler sequence controls capable of controlling up to 16 boiler modules, multiple heating circuits and a hot water circuit using the master/slave principle.
- Quick release access panels for ease of service and maintenance.
- BIM objects available to assist in design and management.
Technical data
| Units | 120 | |
|---|---|---|
| Energy | ||
| Building regulations Part L seasonal efficiency | % gross | 96.13 |
| Boiler output - maximum 80/60°C, NG & LPG* | kW | 117 |
| Boiler output - maximum 50/30°C, NG & LPG* | kW | 127 |
| Boiler output - minimum 80/60°C, Nat Gas. | kW | 27.3 |
| Boiler output - minimum 80/60°C, LPG | kW | 38 |
| Boiler input (gross) - maximum, NG & LPG* | kW | 120 |
| Boiler input (net) - maximum, NG & LPG* | kW | 108 |
| Standby loss | W | 182 |
| Water | ||
| Water content | litres | 116 |
| System design flow rate @ 30°C ΔT rise | l/s | 0.9 |
| Water side pressure loss @ 30°C ΔT rise | mbar | 27 |
| System design flow rate @ 20°C ΔT rise | l/s | 1.4 |
| Water side pressure loss @ 20°C ΔT rise | mbar | 60 |
| System design flow rate @ 11°C ΔT rise | l/s | 2.5 |
| Water side pressure loss @ 11°C ΔT rise | mbar | 198 |
| Minimum water pressure | barg | 1 |
| Maximum water pressure | barg | 6 |
| Minimum flow temperature setting | °C | 22 |
| Maximum flow temperature setting | °C | 85 |
| Gas | ||
| Gas flow rate, NG (G20) - maximum | m³/hr | 12.7 |
| Maximum gas inlet pressure, Nat Gas | mbar | 25 |
| Nominal inlet pressure, Nat Gas | mbar | 20 |
| Minimum gas inlet pressure, Nat Gas | mbar | 17 |
| Gas flow rate, LPG (G31) - maximum | m³/hr | 4.9 |
| Nominal inlet pressure, LPG | mbar | 37 |
| Flue | ||
| Maximum flue gas temperature @ 80/60°C Nat Gas | °C | 60.8 |
| Pressure at boiler flue spigot @ 80/60°C Nat Gas B23P | Pa | 200 |
| Maximum flue gas temperature @ 80/60°C LPG | °C | 60.3 |
| Pressure at boiler flue spigot @ 80/60°C LPG B23P | Pa | 167 |
| Dry NOx emission** | mg/kWh | 30 |
| NOx Class | 6 | |
| Electrical | ||
| Electrical supply | 230V, 1Ph, 50Hz | |
| Power consumption - maximum boiler modulation | W | 204 |
| Start current (per module) | Amp | 3.5 |
| Run current (per module) | Amp | 0.89 |
| Approx shipping weight | kg | 340 |
| Noise emission @1m: @max. modulation | dB (A) | 65 |
| *390kW, 450kW, 525kW and 600kW models Nat Gas only | ||
| **(0% excess oxygen, mg/kWh dry air free); NG/LPG |
Downloads
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Varmax boiler brochureProduct brochures 5806 kb |
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Ideal uses/applications
- Split temperature systems such as a combination of radiator loops/air convectors and underfloor heating.
- Medium to large sized district heating schemes.
- Schools.
- Shopping centres.
- Offices.
- Sports facilities.
- Health facilities.
Optional extras
- A large range of off the shelf flue options available
- Room sealed and open flue solutions
- Flue header kits
Single Boiler Controls
- Outside air temperature sensor QAC34 (Part no. 533901457)
- Domestic Hot Water sensor kit (sensor and pocket) QAZ36 (Part no. 563605674)
- Mixing valve heating circuit control kit (AVS 75 control module, temperature sensor and pocket) for 1 zone (Part no. 059751)
- Programmable room sensor QAA75 (Part no. 533901587)
- Offset adjustable room sensor QAA55 (Part no. 533901589)
Multiple Boiler Controls
- Outside air temperature sensor QAC34 (Part no. 533901457)
- Heating circuit sensor kit (sensor and pocket) QAZ36 (Part no. 563605673)
- Merley boiler sequence controller, wall mounted (Part no. 563605672)
- LPB Bus communication module OCI345, one required per boiler module (Part no. 563605667)
- Programmable room sensor QAA75 (Part no. 533901587)
- Offset adjustable room sensor QAA55 (Part no. 533901589)
- Choose from a wide range of service contracts to help maintain optimum performance.
- Book commissioning at the same time as placing your order for improved warranty terms.
Often bought with
Case studies
Bourne View Care Home
Sector: Care homes
Project: The prestigious local care home in Art Deco style was opened in April 2019 and looking for reliable boilers and water heaters to keep the future residents safe.
Building: New build care home
Application: Space heating 382kW, DHW 1,940 l/h l/h
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