Stratton mk3 condensing wall hung boiler
New product
Wall hung condensing boiler offering a small and durable solution suitable for even the tightest plant rooms.
Available in 7 models with outputs (at 50/30°C) of 42.2, 58, 73.6, 84.4, 101.3, 127.8 and 154.5kW.
Product information
- A wide range of outputs enables you to specify the best wall hung boiler model for your commercial heating system
- Single units can be cascaded for larger installations
- Particularly suited to low height plantrooms, the boiler is less than 2 metres from the ground to the top of the frame when mounted on our low height pipe kit.
- Outstanding efficiency in excess of 108% nett keeps operating costs to a minimum
- Accurate load matching with a high turndown ratio and fully modulating performance
- Pre-mix burner technology gives clean operation with ErP Class 6 NOx emissions
- Heat exchanger manufactured in corrosion resistant stainless steel for a long life, backed up by a 5-year heat exchanger warranty.
- Built in boiler sequence controls capable of controlling up to 16 boiler modules and hot water circuits
- Space saving flue arrangement above the boiler thanks to a concentric flue connector and integral flue gas non-return valve
- Durable stainless steel heat exchanger, this boiler offers exceptional system tolerance
- Full range of hydraulic separation options available
- Easy access for service and system cleaning
- Suitable for natural gas (all sizes) and LPG (up to 120kW) applications
- Quick and easy to install with optional pipe kits for up to 6 boilers and wall mounting plate for individual boilers
- Simple to move and store due to lightweight heat exchanger, and flat base of unit reduces risk of damaging connections
- Suitable for use with room sealed or open flue systems giving you greater flexibility in siting the boilers
- Simple to maintain using quick release internal water and gas couplings
- A commercial boiler designed for sealed systems only for greater efficiency (you can read about the benefits of Sealed 'v' Open Vented heating systems here)
- Low output models in the range for smaller applications
Technical data
| Units | S3-40 | |
|---|---|---|
| Energy | ||
| Building regulations Part L seasonal efficiency | % gross | 95.7 |
| ErP efficiency rating (modules ≤ 70 kW only) | A | |
| Boiler output - maximum 80/60°C, NG & LPG | kW | 38.8 |
| Boiler output - maximum 50/30°C, NG & LPG | kW | 42.2 |
| Boiler output - minimum 80/60°C, NG & LPG | kW | 8 |
| Standby losses | W | 52 |
| Water | ||
| Water content | litres | 3 |
| System design flow rate @ 25°C ΔT rise | l/s | 0.38 |
| Water side pressure loss @ 25°C ΔT rise | mbar | 223 |
| System design flow rate @ 20°C ΔT rise | l/s | 0.48 |
| Water side pressure loss @ 20°C ΔT rise | mbar | 459 |
| System design flow rate @ 11°C ΔT rise | l/s | 0.87 |
| Water side pressure loss @ 11°C ΔT rise | mbar | 1539 |
| Minimum water pressure | barg | 1 |
| Maximum water pressure | barg | 4 |
| Maximum flow temperature setting | °C | 85 |
| Gas | ||
| Gas flow rate, NG (G20) - maximum | m³/hr | 4.2 |
| Maximum gas inlet pressure, Nat Gas | mbar | 25 |
| Nominal gas inlet pressure, Nat Gas | mbar | 20 |
| Minimum gas inlet pressure, Nat Gas | mbar | 17 |
| Gas flow rate, LPG (G31) - maximum | m3/hr | 1.6 |
| Nominal gas inlet pressure, LPG | mbar | 37 |
| Flue | ||
| Maximum flue gas temperature @ 80/60°C Nat Gas | °C | 79 |
| Dry NOx emission (0% excess oxygen, mg/kWh dry air free) | mg/kWh | 36 |
| Electrics | ||
| Electrical supply | 230 V 1 Ph 50 Hz | |
| Power consumption - maximum boiler modulation | W | 67 |
| Approx shipping weight | kg | 45 |
| Noise emission @1m: @maximum modulation | dB (A) | 50 |
Downloads
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Stratton Mk3 brochure_262723.pdfProduct brochures 10012 kb |
Download |
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Stratton MK3 Installation ManualInstallers guides 12355 kb |
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Stratton mk3 Frame and Header Kits Manual 80-150 kW (233247-4)Installers guides 18822 kb |
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Stratton mk3 Magna1 Pumps 235522-3Installers guides 1069 kb |
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Stratton mk3 Plate Heat Exchanger Kits Manual 233248-3Installers guides 19923 kb |
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Stratton mk3 Retrofit Kit 233249-1Installers guides 417 kb |
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Stratton mk3 UPMXXL Pump 235521-1Installers guides 525 kb |
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Stratton mk3 frame & header kit 40-70kWInstallers guides 8718 kb |
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Stratton mk3 schematicsHydraulic schematics 631 kb |
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Stratton Mk3 - 40_70kWCAD 1456 kb |
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Stratton Mk3 - 80_150kWCAD 2615 kb |
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Ideal uses/applications
- New build and retrofit projects.
- Smaller commercial and public buildings including community schools, care homes, hotels, churches and retail units.
- Small industrial and manufacturing premises.
Optional extras
- A large range of off the shelf flue options available
- Room sealed and open flue solutions
- Choice of pipe kits (including pumps) with PHEX and low loss header (Want to know 'What is a low loss header?').
- Support frame kit
- Choice of controls
Often bought with
Case studies
Hull & East Yorkshire Centre for the Deaf
Sector: Independent charity
Project: The Hull & East Yorkshire Centre for the Deaf is a registered charity that has been providing valuable support and social events for the local deaf community since 1926. With a heating system that was reaching the end of its life, we offered the charity the opportunity upgrade to the new Stratton Mk3.
Building: Building refurbishment
Application: Space heating
Learn more