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Grant Combi 90 V3 User, Installation And Servicing Instructions

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See also: User, Installation and Servicing Instructions , Installer and User Manual
Part No. IRL 004 Rev: 0 Jan 07
USER, INSTALLATION
and

SERVICING INSTRUCTIONS

Combi 90 V3
Combi Max
Condensing Combi 26 and Condensing Combi 36
For use with Kerosene or Gas Oil (Condensing Combi Kerosene only)
After installing the boiler leave these instructions with the User
This appliance is deemed a controlled service and specific regional statutory
requirements may be applicable

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  • Page 1: Servicing Instructions

    Part No. IRL 004 Rev: 0 Jan 07 USER, INSTALLATION SERVICING INSTRUCTIONS Combi 90 V3 Combi Max Condensing Combi 26 and Condensing Combi 36 For use with Kerosene or Gas Oil (Condensing Combi Kerosene only) After installing the boiler leave these instructions with the User...

  • Page 2: Table Of Contents

    LIST OF CONTENTS Section Subject Page Combi V3 and Combi Max user instructions ..... . 3 Condensing Combi user instructions ......4 Combi V3, Combi Max and Condensing Combi User instructions .
  • Page 3 About your Combi V3 or Combi Max Boiler When setting the times for the 'on' periods it is useful to Your Grant Combi boiler is fully automatic when the Boiler remember that it might take up to an hour for the house to On/Off switch is set to ON, and will provide domestic hot water become warm, especially in colder weather.

  • Page 4: Condensing Combi User Instructions

    Your Condensing Combi boiler is fully automatic once switched About your Condensing Combi boiler About your fuel Grant Condensing Combi boilers only operate on Class C2 on, and will provide domestic hot water at mains pressure on Kerosene to BS 2869:1998.
  • Page 5 3 - COMBI V3, COMBI MAX & CONDENSING USER INSTRUCTIONS Fig. A – Combi V3 and Combi Max Boiler Controls Fig. B – Boiler controls (Condensing Combi 36 shown) Combi V3, Combi Max and Condensing Combi Models...

  • Page 6: Combi V3, Combi Max And Condensing Combi User Instructions

    3 - COMBI V3, COMBI MAX & CONDENSING COMBI USER INSTRUCTIONS If the burner still fails to light after carrying out these checks then a fault exists. Switch off the electricity supply to the boiler Lighting your boiler (see Fig. A or B) and contact your Service engineer.
  • Page 7 Combi 36. overheating. A red neon (see Fig. A or B) will light The Combi 90 V3, Combi Max and Condensing Combi 26 indicating the thermostat has operated. boilers can be serviced from the front, but it is preferable for any worktop above the boiler to be removable to provide the best access for servicing.

  • Page 8: Technical Information

    4 – BOILER TECHNICAL INFORMATION Boiler technical data – Combi V3 and Combi Max boilers Boiler water content litre Model Combi 90 V3 Combi Max * Weight (dry) Max. heat input (Kerosene) 27.6 36.8 Btu/h 94 200 125 500 Connections:...
  • Page 9 4 – BOILER TECHNICAL INFORMATION Boiler technical data – Condensing Combi boilers Boiler water content litre 48.5 53.5 Model Condensing Combi 26 Condensing Combi 36 (including 32.5 litre primary store) 10.7 11.8 * Weight (dry) Max. heat input (Kerosene) Btu/h 88 700 123 000 Connections:...
  • Page 10 5 Net flue gas temperatures given are ± 10%. 6 ** Net thermal efficiency (notified body). 7 Flue gas temperatures taken at combustion door test point will be approximately 25˚C higher for the Combi 90 V3 and Combi Max. Approximate air damper settings Note: Burners are supplied factory set at the outputs shown.
  • Page 11 Notes: 2 The above settings may have to be adjusted on site for the correct operation of the burner. 3 Gas Oil is not suitable for use with a Grant Condensing Combi boiler. 4 * Net thermal efficiency. 5 The net flue gas temperatures given above are ± 10%.
  • Page 12 4 – BOILER TECHNICAL INFORMATION Boiler dimensions - Combi V3 and Combi Max Fig. 1 Note: Water connections may be from the rear, left or right hand side. If using side exit flue, it must be on the opposite side to the water connections.
  • Page 13 4 – BOILER TECHNICAL INFORMATION Boiler dimensions - Condensing Combi Fig. 3 - Condensing Combi 26 dimensions Fig. 3a - Condensing Combi 36 dimensions Combi V3, Combi Max and Condensing Combi Models...
  • Page 14 4 – BOILER TECHNICAL INFORMATION Water schematic of boiler - Condensing Combi Fig. 4 Combi V3, Combi Max and Condensing Combi Models...

  • Page 15: General Boiler Information

    The Condensing Combi boilers are not supplied with a flue flue, unless the flue terminal is higher than 2.0 m above adaptor. If a conventional flue is to be used, a Grant outside ground level. conventional flue adaptor (Ref. CFCA1546) must be ordered.

  • Page 16: General Boiler Information

    Before starting any work on the boiler, or fuel supply please IMPORTANT Regulations to comply with Installation of a Grant Combi boiler must be in accordance with read the health and safety information given in Section 15 on the following recommendations: page 61.
  • Page 17 5 - GENERAL BOILER INFORMATION 2 Avoid the bottom of the tank being more than 3 m below the burner. 1 Where the storage tank outlet is above the burner the single 5.3.3 Single pipe system - (See Fig. 5) pipe system should be used.
  • Page 18 5 - GENERAL BOILER INFORMATION Head A Maximum pipe run (m) 8 mm OD pipe 10 mm OD pipe Fig. 6 - Two pipe system Note: To prevent any possibility of fuel fumes entering the 1 When the storage tank is below the burner, an alternative to building, the Tiger Loop must be fitted outside.
  • Page 19 5 - GENERAL BOILER INFORMATION Fig. 8 - Tiger loop 5 Connect the return oil flexible fuel line to the pump. 6 Connect the 3/8 to 1/4” BSP adaptor to the flexible fuel line. 5.3.6 Two pipe oil supplies 1 The fuel pump is supplied for use with a single pipe fuel 7 Flexible fuel lines and adaptors are available to purchase See Fig.
  • Page 20 5 - GENERAL BOILER INFORMATION A 230/240 V - 50 Hz Electricity supply Air supply mains supply is required. A sufficient permanent air supply to the boiler should be The boiler must be earthed. See Figs. 10 and 11 provided: For proper combustion of fuel and effective discharge 2 The supply must be fused at 5 Amp and there must only be of combustion products to the open air.
  • Page 21 3 If an existing chimney is used, it must be lined with a stainless steel liner for use with fuel oil. The top and bottom Grant boilers have high operating efficiencies. Care must be See Figs. 12 and 14 of the annular space must be sealed and the void filled with...
  • Page 22 Fig. 12 - Typical conventional flue with brick chimney Conventional flue system Condensing Combi Under no circumstances can Grant Condensing Combi boilers be installed with existing flue systems. Only flue systems and components suitable for wet flues should be used.
  • Page 23 5 - GENERAL BOILER INFORMATION IMPORTANT MAXIMUM VERTICAL HEIGHT OF FLUE SYSTEM = 19 METRES Fig. 13 - Condensing Combi typical conventional flue with brick chimney 3 The flue terminal must be at least 600 mm from any opening 6 The internal flue diameter for all models must be into the building, and 600 mm above any vertical structure 100 mm (4 in).
  • Page 24 Apart from a conventional flue, several balanced flue options conventional flue systems. are available for use with Grant Combi boilers. All are suitable for use with Class C2 kerosene and Class D Gas oil (kerosene only for the Condensing Combi).
  • Page 25 5 - GENERAL BOILER INFORMATION Extensions are available which extend the flue by 225 mm, The minimum dimensions for locating the terminal from 450 mm or 950 mm. An adjustable extension of 275 to 450 building features (windows, doors, etc.) are shown in Fig. mm is also available.
  • Page 26 5 - GENERAL BOILER INFORMATION Fig. 14 - External flue (Green system) Combi V3, Combi Max and Condensing Combi Models...
  • Page 27 Below a gutter or sanitary pipework * 600 Terminal position Min. distance (mm) Horizontal from an opening. air brick or window Clearances recommended by Grant Engineering Limited in Above ground or balcony level **300 accordance with relevant Standards and Building Regulations. Below eaves or balcony...
  • Page 28 Combi). The Combi 90 V3, Combi Max and Condensing Combi 26 boilers can be serviced from the front, but it is preferable for any worktop above the boiler to be removable.
  • Page 29 5 - GENERAL BOILER INFORMATION 5.12 Sealed central heating system 1 The boilers are only suitable for use with a sealed s y s t e m 4 The system design pressure (cold) should be between 0.5 See Fig. 16 complying with the requirements of BS 5449.
  • Page 30 Arrangements for anti-syphonage manufacturers instructions. Grant Engineering (Irl) Ltd. cannot are not necessary. be held responsible for any damage or misuse caused by the fitting of any water conditioning device.
  • Page 31 - e.g. in a basement, it will be 5.16 Pipework materials General - Grant boilers are compatible with both copper and necessary to use a condensate pump. plastic pipe. Where plastic pipe is used it must be of the oxygen...
  • Page 32 5 - GENERAL BOILER INFORMATION On external discharge systems to a gully or soakaway, the bung should be removed from the overflow outlet. If connected to an external soil stack, the bung must be fitted on the trap. If there is any discharge of condensate from the overflow outlet, this could indicate a blockage (possibly due to freezing).
  • Page 33 5 - GENERAL BOILER INFORMATION Domestic hot water supply always takes priority over central If the Heating switch is set to either TIMED or CONSTANT, heating. If a demand for hot water occurs during a period of the boiler will return to the central heating mode, with the central heating, the boiler mode will automatically change to Heating pump and burner running.

  • Page 34: Boiler Installation

    5 - GENERAL BOILER INFORMATION 1 Size radiators with a mean water temperature of 60˚C. Radiators:- Flow temperature 70˚C 2 Design system controls with programmable room Return temperature 50˚C thermostats or use weather compensating controls to Differential 20˚C maintain return temperatures below 55˚C. Underfloor:- Flow temperature 50˚C...
  • Page 35 6 - BOILER INSTALLATION High level and vertical balanced flue If the boiler is to be used with the high level balanced flue See Fig. 21 and 21a (White system) make the hole in the wall as shown in Fig. 21 Note: Dimension B given in Fig.
  • Page 36 6 - BOILER INSTALLATION Make the water connections Holes are provided in the rear of the casing side panels to allow the condensate pipe to be run through the back of the boiler. It Combi V3 and Combi Max water connections will be necessary to remove the back panel from the boiler Note: Water connections may be from the rear, left or right casing to fit this pipework, and to refit the panel before placing...
  • Page 37 Important: Ensure that the electrical supply has been isolated before commencing. If a Grant plug-in timer is used, a permanent 230 V mains supply (fused at 5 Amp) must be taken to the boiler. A three core cable is required to connect the boiler terminal block to the live supply.
  • Page 38 2 Remove the blanking piece from the timer aperture in the and 5 on the Combi V3 and Combi Max or 6 and 7 on the control panel fascia by firmly pressing on the Grant logo (in Condensing Combi in accordance with the thermostat the centre of the black square) until it is detached from the manufacturers instructions.
  • Page 39 6 - BOILER INSTALLATION 2 Connect the flexible fuel line to the rigid supply using the Connect the fuel supply 6.10 adaptor supplied. The supply enters through one of the holes at the bottom of the case sides. See Fig. 9 If a two pipe system is to be used refer to Section 5.3.6.

  • Page 40: Fill And Vent The System

    7 - FILL AND VENT THE SYSTEM Fill the system 1 Automatic air vent(s) are fitted to the top of the boiler. 7 Continue to fill the system until the pressure gauge indicates Check that the small cap on the top of each air vent is between 0.5 and 1.0 bar.

  • Page 41: Commissioning

    8 - COMMISSIONING Refer to Fig. 25 or 25a for boiler controls Fig. 25 - Combi V3 and Combi Max boiler Controls Fig. 25a Boiler controls (Condensing Combi 36 shown) 1 Check that the water system has been vented and pressurised, and there are no leaks.
  • Page 42 8 - COMMISSIONING 4 Connect a combined vent manifold and pressure gauge to 13 After allowing the burner to run for 20 minutes - Check the the pressure gauge connection port on the oil pump. See Fig. smoke number, if satisfactory check the CO level.

  • Page 43: Boiler Handover

    9 - BOILER HANDOVER The User must be advised (and demonstrated if necessary) of 7 Tell the User the system pressure and show them the the following important points: position of the safety valve discharge pipe. 1 How to light and turn off the boiler and how to operate the 8 Show the User how to reset the overheat thermostat and how system controls.

  • Page 44: Boiler Servicing

    Place it on the floor, taking care not Remove the four nuts and washers securing the front 1 Combi 90 V3, Combi Max and Condensing Combi to strain the flexible pipe. cleaning door and withdraw the door. Take care - it is heavy.
  • Page 45 10 - BOILER SERVICING Fig. 28 - Combi Max baffle positions Fig. 30 - Condensing Combi 36 Fig. 29 - Condensing Combi 26 7 Condensing Combi - Pull out the spiral turbulators from 9 Condensing Combi - Remove the condensate trap and the heat exchanger tubes.
  • Page 46 Check the electrode settings - Electrode tips approximately Refer to the Commissioning instructions starting on page 41. 4 mm apart and 3 to 3.5 mm (Combi 90 V3, Combi Max, Condensing Combi) in front of the nozzle, see Fig 32.

  • Page 47: Boiler Components

    11 - BOILER COMPONENTS Fig. 33 - Combi V3 and Combi Max components/connections Cold water inlet isolating valve Diverter valve - cold water inlet Main Components Connections Lower pump union Diverter valve - primary inlet upper pump union - isolating valve Diverter valve - primary outlet Heating check valve Plate heat exchanger - hot water outlet...
  • Page 48 11 - BOILER COMPONENTS Fig. 33a - Condensing Combi components/connections Circulating pump - heating Heating system flow - push-fit elbow Connections/pipe Main Components Circulating pump - hot water (primary store) Heating system return - push-fit elbow Plate heat exchanger Cold water inlet - push-fit elbow Pressure switch Hot water outlet - push-fit elbow Flow switch...

  • Page 49: Wiring Diagrams

    12 - WIRING DIAGRAMS 12.1 Control panel wiring diagram - Combi V3 and Combi Max 12.2 Functional flow wiring diagram - Combi V3 and Combi Max Combi V3, Combi Max and Condensing Combi Models...
  • Page 50 12 - WIRING DIAGRAMS 12.3 Control panel wiring diagram - Condensing Combi 12.4 Functional flow wiring diagram - Condensing Combi Combi V3, Combi Max and Condensing Combi Models...
  • Page 51 12 - WIRING DIAGRAMS 12.5 Typical connection of external timer Important: If a remote timer is used, it must be a single channel 230V unit incorporating voltage free output contacts. Combi V3, Combi Max and Condensing Combi Models...

  • Page 52: Fault Finding

    13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 53 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 54 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 55 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 56 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 57 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...
  • Page 58 13 - FAULT FINDING Combi V3, Combi Max and Condensing Combi Models...

  • Page 59: Burner Spares

    14 - BURNER SPARE PARTS Riello RDB burner - exploded view 14.1 Key Description Description Not applicable Capacitor 4.5 ug 3002837 Part No. Part No. Flange 3005786 Seal kit 3008878 Combustion head LD3 (90V3) 3008768 Needle valve 3007582 Combustion head T2 (Condensing 26) 3002423 Regulator 3008651...
  • Page 60 14 - BURNER SPARE PARTS Combi V3, Combi Max and Condensing Combi Models...

  • Page 61: Health And Safety Information

    15 - HEALTH AND SAFETY INFORMATION Adhesives, sealants and paints used in the manufacture of the product are cured and present no known hazards when used in the manner for which they are intended. The following other materials are present in the product: Ceramic fibre board, mineral wool.
  • Page 62 92/42/EEC - Hot Water Boiler Efficiency Directive Referred to the generic standard The Boiler (Efficiency) (Amendment) Regulations 1994 (SI 1994/3083) Signed:________________________________________________ Managing Director Grant Engineering (Ireland) Ltd., Crinkle, Birr, Co. Offaly, Ireland. Combi V3, Combi Max and Condensing Combi Models...
  • Page 63 Combi V3, Combi Max and Condensing Combi Models...
  • Page 64 All goods sold are subject to our official Conditions of Sale, a copy of which may be obtained on application. © Grant Engineering (Ireland) Limited 2001. No part of this manual may be reproduced by any means without prior written consent.

This manual is also suitable for:

Combi maxCondensing combi 26Condensing combi 36

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