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Table of Contents
- 1 Using the Boiler
- 2 General Installation Information
- 3 Flue Systems
- 4 Boiler Location
- 5 Central Heating System
- 6 Pump Performance Curves
- 7 Filling the Central Heating System
- 8 Domestic Hot Water System
- 9 High Level Termination
- 10 Electrical Safety
- 11 Maintenance Operations
- 12 Annual Maintenance Procedures
- Download this manual
Zeus Maior 24 Instructions
IMMERGAS ZEUS MAIOR 24
Instruction Booklet
Wall Mounted, Room Sealed, Gas Fired
Combination Boiler with Unvented Hot Water
Storage
Read these instructions completely before using or installing the Immergas Zeus Maior 24
gas boiler
LEAVE THESE INSTRUCTIONS WITH THE USER
For technical assistance, spare parts or service call:
RVR Limited, Kenmare, Co. Kerry Tel: 064 41344, Fax: 064 89520
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Table of Contents
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Summary of Contents for Immergas Zeus Maior 24
- Page 1 Wall Mounted, Room Sealed, Gas Fired Combination Boiler with Unvented Hot Water Storage Read these instructions completely before using or installing the Immergas Zeus Maior 24 gas boiler LEAVE THESE INSTRUCTIONS WITH THE USER For technical assistance, spare parts or service call:...
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Page 2: Using The Boiler
Zeus Maior 24 Instructions Introduction The Immergas Zeus Maior 24 boiler is a wall mounted, fan assisted room-sealed combination boiler, incor- porating a 60 litre unvented hot water storage cylinder. Heat output is controlled by a modulating gas valve, with fully automatic direct burner ignition. - Page 3 Zeus Maior 24 Instructions PERFORMANCE: Nominal Heat Input 30.3 (26030) Min. Heat Input 12.2 (10466) Nominal Heat Output (useful) 27.9 (24000) Min. Heat Output 10.5 (9000) GAS: Nozzle diam. 0.75 0.75 Supply Pressure mbar HEATING SYSTEM Burner Pressure (Nom Output) mbar 10.5...
- Page 4 Zeus Maior 24 Instructions Main Boiler Components Hot Water Cold Water Return Flow Key: 1 Air (A) and Flue(F) connections 14 Flue Extractor Hood 2 Fan Safety Pressure Switch 15 Expansion Tank 3 Heating NTC limit and regulation sensor 16 Ignition/Detection Plugs...
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Page 5: General Installation Information
Zeus Maior 24 Instructions General Installation Information Gas Supply The meter and supply pipes must be sized to deliver the gas rate and pressure given on page 3. boiler requires at least a 22 mm (3/4”) gas supply pipe. The complete installation, including the meter, must be tested for gas soundness and purged as described in IS 813:2002. -
Page 6: Flue Systems
Zeus Maior 24 Instructions Flue Systems Flue System When the boiler is installed on an external wall, the standard horizontal concentric 60/100 flue kit will be used to flue the boiler. This is shown in the diagram. A flue diaphragm with a 44mm diameter must be fitted with this flue arrangement. - Page 7 It is often necessary to install a longer flue system to cater for site conditions. There are several different flue system sizes available for the Zeus Maior 24 boiler. Horizontal concentric kit 60 /100 The exhaust pipe (φ 60 mm) is fitted inside the air intake pipe (φ...
- Page 8 Zeus Maior 24 Instructions Flue calculations for more complex systems Each component of the air inlet/flue system has a resistance factor . These are given in the following tables. The resistance factor varies depending on whether the component in question conveys fresh inlet air or hot combustion gases.
- Page 9 Zeus Maior 24 Instructions Example: Flue system consists of 9m of 80mm air intake pipe with 3 x 90 bends and 6m of exhaust pipe with 2 x 90 bends. Component Resistances: Component Resistance Quantity Total In this case the total resistance of the system is less than 100.
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Page 10: Boiler Location
Zeus Maior 24 Instructions Terminal Position Min. Distance A Directly below an opening, air brick, windows, etc. 300 mm B Below gutters, soil pipes or drain pipes 75mm C Below eaves 75mm D Below balconies or car port roof 75mm... -
Page 11: Central Heating System
An optional automatic bypass is available as an accessory for the Zeus Maior 24 boiler. This may be fitted directly to the boiler central heating flow and return connections. -
Page 12: Filling The Central Heating System
Zeus Maior 24 Instructions The most important components of the system are shown in the diagram below. The cold water supply for the water heating side of the system may come from a booster pump or the • cold water mains where this is permitted by the local authority. -
Page 13: Domestic Hot Water System
The installation is subject to Building Regulations and the Water Bye Laws of the Local Authority. The Immergas Zeus Maior 24 boiler is supplied with all the components required for a safe and efficient unvented hot water system. An air cushion which is present at the top of the 60l storage vessel provides sufficient expansion for the domestic hot water system. -
Page 14: High Level Termination
Zeus Maior 24 Instructions Tundish installation The discharge pipework from the tundish:- 1. Shall fall continuously through its length. 2. Shall be of a heat resistant material, e.g. metal. 3. Shall not be fitted with any valves or taps. 4. Shall discharge to a safe visible position, e.g. onto the surface of an external wall or into a gulley. -
Page 15: Electrical Safety
Zeus Maior 24 Instructions Operation and Maintenance Instructions An annual maintenance of the boiler and heating system is recommended. This ensures that the optimal safety, performance and operation characteristics of the boiler remain unchanged over time. Warnings Never expose the wall-mounted boiler to direct vapours from a cooking surface. Use of the boiler by un- skilled persons or children is strictly prohibited. -
Page 16: Maintenance Operations
Zeus Maior 24 Instructions Maintenance Operations Lack of water in boiler. Periodically check the system water pressure. Make sure that the pressure in the system is between 1 and 1.2 bar. N.B. Close the filling valve on completion. If pressure valves reach around 3 bar the safety valve may be activated. -
Page 17: Annual Maintenance Procedures
Zeus Maior 24 Instructions Annual maintenance procedures The following checks and maintenance should be performed at least once a year. - Clean the flue side of the heat exchanger. - Clean the main burner. - Make a visual inspection of the flue extraction hood for wear or corrosion. - Page 18 Zeus Maior 24 Instructions Zeus Maior 24 Series Variable Heat Output Zeus Maior 24 Wiring Diagram...