Ideal Logic Combi ESP1 35 Boiler Instruction Manual
Ideal Logic Combi ESP1 35 Boiler
Ideal Logic Combi ESP1 35 Boiler
Ideal Logic Combi ESP1 35 Boiler
Ideal Logic Combi ESP1 35 Boiler
Ideal Logic Combi ESP1 35 Instructions
Here we offer the Ideal Logic Combi ESP1 35 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 Combi ESP1 35 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
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Ideal Logic Combi ESP1 35 Boiler Specifications
| Feature | Specification |
|---|---|
| Boiler Type | Wall-mounted, room-sealed, fan-assisted condensing combination boiler (C13, C33, C53) |
| G.C. Appliance No. (Benchmark No.) | 47-349-23 |
| Gas Type and Supply | Natural Gas 2H, G20, 20 mbar (I2H); LPG conversion kit available |
| Destination Countries | GB, IE |
| Central Heating Output (70°C mean water temperature) | 7.1 to 24.2 kW, fully modulating |
| Central Heating Output (40°C mean water temperature, condensing) | 7.5 to 25.6 kW |
| Central Heating Input (Nett / Gross CV) | Max 24.3 / 27.0 kW; Min 7.1 / 7.9 kW |
| Maximum DHW Output | 35.3 kW |
| Maximum DHW Input (Nett / Gross CV) | 35.4 kW / 39.3 kW |
| Gas Consumption (Max DHW) | 3.657 m³/h (129 ft³/h) |
| Gas Consumption (Min CH) | 0.734 m³/h (25.9 ft³/h) |
| DHW Flow Rate at 35°C Rise | 14.5 l/min (3.2 gpm) |
| DHW Specific Rate | 16.9 l/min (3.7 gpm) |
| DHW Temperature Range | 40°C to 65°C |
| Central Heating Flow Temperature Range | 30°C to 80°C |
| Injector Size | 4.9 mm |
| CO2 Content (± 0.7) | 9.5% at max DHW; 8.9% at min CH |
| Average Flue Temperature / Mass Flow Rate (DHW) | 73°C / 15 g/s |
| Seasonal Space Heating Energy Efficiency (ηs) | 94%, Class A |
| Water Heating Energy Efficiency | 84%, Class A (tapping profile XL) |
| SEDBUK Efficiency | 91.1% (2005); 89.6% (2009) |
| Useful Efficiency (ErP) | 90.0% at full load; 98.7% at part load |
| NOx Emissions | Class 6; 30 mg/kWh (gross) |
| Sound Power Level, Indoors | 44 dB(A) |
| Annual Energy Consumption (Space Heating) | 75 GJ |
| Auxiliary Electricity Consumption | 0.029 kW full load; 0.013 kW part load; 0.005 kW standby |
| Electrical Supply | 230 V ~ 50 Hz, must be earthed |
| Power Consumption | 114 W |
| Fuse Rating | External 3A; Internal T4A HRC L250 V |
| Pre-fitted Mains Cable | 1.8 m |
| Electrical Protection Rating | IP20 |
| Maximum Working Pressure (Sealed System) | 2.5 bar (36.3 lb/in²) |
| Maximum DHW Inlet Pressure | 10.0 bar (145 lb/in²) |
| Minimum DHW Inlet Pressure (for maximum flow) | 1.3 bar (18.9 lb/in²); boiler operates down to 2 l/min DHW delivery |
| Safety Valve Setting | 3.0 bar, non-adjustable |
| Built-in Expansion Vessel | 8 litres, 0.75 bar initial charge |
| Pressure Gauge Range | 0 to 4 bar |
| Water Content | CH 1.2 l (0.26 gal); DHW 0.5 l (0.11 gal) |
| Pump Head Available for System | 3.4 m.w.g. at 17.3 l/min, 20°C differential |
| Heat Exchanger Material | Cast aluminium |
| Gas and DHW Connections | 15 mm copper compression |
| CH Flow and Return Connections | 22 mm copper compression |
| Condensate Drain Outlet | Universal fitting for 21.5 mm overflow pipe; 75 mm siphonic trap |
| Flue Terminal Diameter | 100 mm (60/100 concentric) |
| Maximum Horizontal Flue Length | 6 m, minus any extensions or bends |
| Maximum Vertical Flue Length | 7.5 m, minus any bends |
| Flue Bend Equivalent Resistance | 90° bend = 1 m; 45° bend = 0.6 m |
| Casing Dimensions (H x W x D) | 700 x 395 x 278 mm |
| Packaged Weight | 33.9 kg |
| Maximum Installation Weight | 29.1 kg |
| Servicing Clearances | 165 mm above, 100 mm below, 2.5 mm sides, 450 mm front |
Ideal Logic Combi ESP1 35 Boiler Details
The Ideal Logic Combi ESP1 35 is the highest-output model in the Logic Combi ESP1 range. It is designed for homes with high hot water demand, such as properties with several bathrooms. It arrives fully assembled with a DHW plate heat exchanger, diverter valve, circulating pump, pressure gauge, safety valve and CH expansion vessel. An automatic bypass and daily pump and diverter valve exercise are included as standard. The casing is white painted mild steel with a white polymer front panel. The boiler contains no asbestos, mercury or CFCs.
The front control panel has three knobs: DHW temperature (A), central heating temperature (B) and mode (C). The mode knob selects Boiler Off, Summer (hot water only) or Winter (heating and hot water). In winter mode, domestic hot water takes priority whenever a tap is opened. A backlit LCD shows status codes such as 00 for standby and FP for frost protection, along with the current flow temperature. A burner indicator lights while the flame is established. The CH knob also has an economy position that helps the boiler condense and use less gas.
Frost protection works in all modes as long as mains power stays on. It fires the boiler when the water inside falls below 5°C and runs until it reaches 19°C. Separately, the pump runs briefly once every 24 hours as a self-check. The boiler supports weather compensation through an outside sensor, as well as OpenTherm controls, 230 V room thermostats and timers. With weather compensation fitted, the CH knob sets the room temperature instead of the radiator temperature.
The built-in filling loop sits between the DHW inlet valve and the CH return valve, so the user can top up the system. The normal cold pressure is 1 to 1.5 bar, and the boiler will not run below 0.3 bar. A 75 mm siphonic condensate trap lowers the risk of freezing. If the condensate pipe does freeze, the boiler gurgles and locks out with an L2 code. The user guide explains how to thaw the pipe safely with warm water or heat packs. Boiling water must not be used.
Fault diagnosis uses clear codes, for example F1 for low water pressure, F2 for flame loss, F3 for a fan fault, L2 for ignition lockout and LC for five resets within 15 minutes. Installer Mode opens when FUNCTION and RESTART are held together for more than five seconds. It shows the last three faults and gives access to minimum and maximum rate tests, a five-minute venting function, the diverter mid-position setting and pump speed settings. The air/gas ratio valve is set at the factory and must not be adjusted.
The boiler works with a wide range of flues, including telescopic and non-telescopic horizontal kits, vertical roof kits, a loft air inlet and high-level, balcony and soffit kits. High-rise aluminium flues are available for buildings above 18 m. Installation accessories include stand-off kits, a DHW expansion vessel, the Ideal System Filter and a condensate pump kit. The boiler must be serviced at least once a year by a Gas Safe Registered Engineer, and the Benchmark Checklist must be completed for the warranty to be valid.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Ideal Logic Combi ESP1 35 Boiler, and we answer them below.
