Product Overview
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Product Snapshot Type Condensing Forced Draft Range 50-150kW Efficiency 125.1% (Vent) 97.8% (Gross) Outdoor Option Yes Fuel Type Natural Gas, LPG Gas Approval Type Type A Modulation Up to 1:10 Cascadeable Yes (up to 9 units) Max Pressure 500 kPa Low NOx Yes In-built Pump Yes Building / Code 2016 compliant Meridian City delivers premium condensing performance in a spacesaving wall-hung design, achieving net efficiencies exceeding 105% at 50/30°C return temperatures. With true 1:10 modulation and the flexibility to cascade up to 9 units for 1.35MW total capacity, Meridian City transforms limited plant room spaces into high-efficiency heating powerhouses. Drawing on proven condensing technology refined over 25 years, this wall-mounted solution is engineered for commercial retrofits and new installations where floor space is at a premium. -
- Exceeds 105% net efficiency at 50/30°C return temperatures
- True 1:10 turndown ratio (1:6 for 160kW model)
- Class 6 NOx emissions – ultra-low polluting emissions
- Optimized premix burner for perfect combustion and flame stability at all power levels
- Modulating circulation pump with built-in degasser optimizes electrical consumption based on Δt°
- Special burner geometry ensures stable flame even at minimum output
- Wall-mounted design eliminates floor space requirements
- Lightweight construction enables mounting on standard masonry walls
- Pre-assembled hydraulic and gas connections reduce installation time
- Integrated circulation pumps provide adequate head pressure for most applications
- Cascade configurations up to 1350kW (9 units with electronic management)
- Compatible with existing flue systems (100mm connection, 160mm for runs over 2m)
- Advanced cascade controls with automatic lead-lag rotation
- 0-10V modulation interface for seamless BMS integration
- Over 40 configurable parameters for precise system optimization
- Electronic cascade management enables up to 1:119 modulation across 9 units
- Pre-configured cascade controls eliminate complex commissioning
- Compatible with remote monitoring and management systems
- Stainless steel heat exchanger ensures longevity in condensing conditions
- Proven field reliability with continuous technical refinements
- Advanced antifreeze protection with electronic probe
- Antifreeze function operates even without gas supply
- Room sealed design prevents contamination from pool chemicals or industrial fumes
- Dry condensate siphon prevents trap freeze-up
- Wall-mounting maximizes usable floor space in plant rooms
- Ideal for retrofit projects with limited access or floor space
- Natural gas and LPG compatible
- Ultra-quiet operation < 45dBA with sound-absorbing panels
- Suitable for mixed high/low temperature systems
- Perfect for decentralized heating strategies and thermal power station replacement
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Gas Pressure: 2.0 kPa or 20mbar
Minimum Water Pressure: 1.2 bar
Maximum Water Pressure: 5 bar
Model Unit CITY 50 CITY 70 CITY 90 CITY 115 CITY 160 Output 50/30°C kW 49.5 65.6 89.3 113.5 157.5 Net Efficiency 50/30°C % 103.5 104.1 105 105.1 105 Output 80/60°C kW 46 61.1 82.4 104.9 144.6 Net Efficiency 80/60°C % 96.1 97.1 97.3 97.2 97.8 Nominal Input MJ/hr 180 252 340 432 599 Modulation Ratio 1:10 1:10 1:10 1:10 1:06 50:30 Maximum flow rate l/s 0.6 0.78 1.06 1.35 1.88 Water Pressure Loss kPa 25 26 26 26 28 Total Water Volume litres 3.5 4 9 11.5 14 Dry Weight kg 39.4 45.8 86.7 91.5 108.3 Height mm 837 837 837 837 837 Width mm 450 450 600 600 600 Depth mm 475 475 615 615 725 Flue Connection size** Ø mm 80 80 100 100 100 Air intake size mm 80 80 100 100 100 Power Supply V/Hz 240/50 240/50 240/50 240/50 240/50 * The size of the main flue may vary from the flue connection size subject to various installation criteria.
Notes:
- For assistance with flue sizing, please discuss your project details with our technical support team.
- The internal pump can provide 60 kPa external head pressure.
- All secondary pumps must suck from the top of the hydraulic separator and pump into the field.
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This installation features two wall mounted Meridian City units in cascade with outdoor enclosures and fully
integrated ancillary equipment.