Ideal Logic Max Combi C35 Boiler Instruction Manual
Ideal Logic Max Combi C35 Boiler
Ideal Logic Max Combi C35 Boiler
Ideal Logic Max Combi C35 Boiler
Ideal Logic Max Combi C35 Boiler
Ideal Logic Max Combi C35 Boiler Instructions
Here we offer the Ideal Logic Max Combi C35 Boiler manual completely free and in English. We have cataloged this manual in the Boilers section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Ideal Logic Max Combi C35 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
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Ideal Logic Max Combi C35 Boiler Specifications
| Feature | Specification |
|---|---|
| Boiler Type | Wall-mounted, condensing, combination gas boiler (room sealed, fanned flue) |
| G.C. Appliance No. (Benchmark No.) | 47-387-05 |
| Gas Supply | Natural Gas 2H - G20 - 20 mbar (LPG conversion kit available) |
| Central Heating Output (70ºC mean water temp.) | 7.1 - 24.2 kW |
| Central Heating Output (40ºC mean water temp., condensing) | 7.5 - 25.6 kW |
| Central Heating Input (Net CV) Max / Min | 24.3 kW / 7.1 kW |
| Central Heating Input (Gross CV) Max / Min | 27 kW / 7.9 kW |
| Maximum DHW Input (Net / Gross CV) | 35.4 kW / 39.3 kW |
| Maximum DHW Output | 35.3 kW |
| DHW Flow Rate at 35ºC Temperature Rise | 14.5 l/min (3.2 gpm) |
| DHW Specific Rate | 16.9 l/min (3.7 gpm) |
| Gas Consumption at Maximum DHW Input | 3.657 m³/h (129 ft³/h) |
| Gas Consumption at Minimum CH Input | 0.734 m³/h (25.9 ft³/h) |
| CH Flow Temperature Range | 30ºC - 80ºC |
| DHW Outlet Temperature Range | 40ºC - 65ºC |
| Seasonal Space Heating Efficiency Class | A (94%) |
| Water Heating Energy Efficiency Class | A (79%, tapping profile L) |
| SEDBUK 2005 / SEDBUK 2009/2012 | 91.1% / 89.6% |
| NOx Classification / Emissions | Class 6 / 30 mg/kWh (gross) |
| Sound Power Level Indoors (LWA) | 46 dB |
| Annual Energy Consumption (Space Heating) | 75 GJ |
| Daily Fuel Consumption (24 hr, GCV) | 15.14 kWh |
| CO2 Content (± 0.7) | 9.7% max DHW / 8.8% min CH |
| Average Flue Temperature / Mass Flow Rate (DHW) | 73ºC / 15 g/s |
| Injector Size | 4.9 mm |
| Maximum Working Pressure (Sealed Systems) | 2.5 bar (36.3 psi) |
| Maximum DHW Inlet Pressure | 10.0 bar (145 psi) |
| Minimum DHW Inlet Pressure (for maximum flow rate) | 1.3 bar (18.9 psi) |
| Minimum DHW Delivery | 2 l/min |
| Expansion Vessel | 8 litres, 0.75 bar initial charge |
| Pressure Relief Valve | Preset lift pressure 3 bar |
| Pressure Gauge Range | 0 - 4 bar |
| Water Content | CH 1.2 l (0.26 gal) / DHW 1.0 l (0.22 gal) |
| Electrical Supply | 230 V ~ 50 Hz |
| Power Consumption | 110 W |
| Fuse Rating | External: 3 A / Internal: T4A HRC L250 V |
| Electrical Protection | IP20 |
| Gas Connection | 15 mm copper compression |
| CH Flow and Return Connections | 22 mm copper compression |
| DHW Inlet and Outlet Connections | 15 mm copper compression |
| Condensate Drain Outlet | 21.5 mm overflow pipe fitting, 75 mm siphonic trap |
| Flue Terminal Diameter | 100 mm |
| Maximum Horizontal Flue Length | 6.0 m |
| Maximum Vertical Flue Length | 7.5 m |
| Casing Dimensions (H x W x D) | 700 x 395 x 278 mm |
| Lift Weight | 28.6 kg |
| Packaged Weight | 35 kg |
| Heat Exchanger | Cast aluminium |
| Servicing Clearances | 165 mm above, 100 mm below, 2.5 mm sides, 450 mm front |
| Warranty | 10 years parts and labour (registration within 30 days) |
Ideal Logic Max Combi C35 Boiler Details
The Ideal Logic Max Combi C35 is the highest-output model in the Logic Max Combi2 range. It provides central heating and instantaneous domestic hot water from one compact wall-hung unit. It comes fully assembled with a DHW plate heat exchanger, diverter valve, circulating pump, pressure gauge, PRV and expansion vessel. Standard features include an automatic bypass, boiler frost protection and a daily exercise of the pump and diverter valve to stop them seizing. The casing is white painted mild steel with a white polymer front panel. All servicing is done from the front.
The user controls combine a large colour screen, two temperature knobs, a Mode button and hot keys. The Mode button switches the boiler between Off, Summer (hot water only) and Winter (heating and hot water). The status display cycles through up to three messages to show demands, target temperatures and the burner state. A flame symbol lights up whenever the burner is running. If you turn the heating knob down to the leaf symbol, the boiler runs at lower flow temperatures and condenses more efficiently.
By default the hot water preheat is off, which keeps gas use down. When set to On, the boiler fires briefly to keep the plate heat exchanger warm. Preheat starts when the flow temperature is 15ºC below the DHW target. It stops at 5ºC below the target or after 3 minutes, and it runs no more than once every 30 minutes. The Timed option uses Intelligent Preheat, which learns your hot water use over 7 days and preheats only during the periods you normally draw hot water.
The boiler also uses Intelligent Load Optimisation to reduce on-off cycling. When the flow temperature goes 4ºC above the CH target, the burner switches off. When it relights, the boiler modulates down to minimum rate over 60 seconds and stays there for 10 minutes. Normal operation returns after those 10 minutes, or once there has been no heating demand for more than an hour. The boiler also runs a 60-second pump overrun after hot water use and a fan overrun cycle after the burner stops.
Frost protection works in every mode as long as the mains power is on. The boiler fires if its water temperature drops below 5ºC. A siphonic condensate trap lowers the risk of a frozen drain. If the drain does freeze, the display shows Ignition Lockout or Blocked Flue/Condensate. To clear it, apply warm water or heat packs to the frozen section of pipe (never boiling water). A year after installation, the display shows a Service Due reminder with the contact number of the chosen service engineer.
The built-in diagnostics include a Fault Help menu, a fault history and live sensor readings. The fault messages cover low water pressure, overheat, ignition lockout, pump dry run and thermistor faults. The boiler will not run if the system pressure falls below 0.3 bar. Users can top up to 1–1.5 bar with the integrated filling loop, which has a green handle. The appliance is tested and certified to BSEN 15502 and BSEN 60335. It contains no asbestos, mercury or CFCs.
The C35 works with Ideal's Halo controls. The Halo RF and Halo Wi-Fi need no hardwiring because they connect through the Halo Smart Interface fitted in the boiler aperture. Pairing the C35 with a Halo Combi Wi-Fi raises the package ErP rating from A to A+. Halo Wi-Fi adds geolocation, Met Office weather compensation, 2-zone load compensation and remote diagnostics. Halo Lite (wired OpenTherm) and the weather compensation outdoor sensor (part 216119) meet Boiler Plus requirements. The PRT3 RF thermostat is not compatible.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about Ideal Logic Max Combi C35 Boiler, and we answer them below.
