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Sales/Spares & Replacement Help Line 01604 762881

In the interest of continuous development Johnson and Starley reserves the right to change specification 

without prior notice. Johnson and Starley prides itself on its ability to supply spare parts quickly and 

efficiently.

PLEASE READ THESE INSTRUCTIONS 

CAREFULLY BEFORE STARTING INSTALLATION. 

LEAVE THESE INSTRUCTION WITH THE USER OR 

AT THE GAS METER AFTER INSTALLATION

The Benchmark Scheme

Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are 

provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance 

with the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate 

Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations 

and should be provided to the customer for future reference.

Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark 

Code of Practice, which is available from the Heating and Hotwater Industry Council who manages and promote the 

Scheme. 

Visit www.centralheating.co.uk for more information.

 CONTENTS

 

The Benchmark Scheme 

3

1. Features 

4

2.  General Description 

4

3.  Building Standards & Regulations 

5

4.  Safety & Gas Information 

6

General Safety Information

Gas Categories

Gas Supply

5.  Technical Data 

6

6.  Heater Positioning 

7

7.  Heater Compartment Clearances 

7

8.  Duct System 

8

Return Air

Warm Air Delivered

9.  Flue Instructions 

9

Flue Configurations

Diagram of Terminal Positions

Types of Flue Systems

Flue Terminal Positions

Plume Terminal Outlets

Flue Requirements & General Information

Conventional 60 / 100 mm Flue Accessories Part No.s

The Extended Horizontal Flue System
Optional Roof Outlets

10. Condensate Pump & Drain Tube 

14

Condensate Pump

Technical Data

Condensate Tube Routing Options

11. Gas 

15

12. Electrical 

15

Mains Supply
Thermista-stat & its Location

13. Fitting Instructions 

16

14. Commissioning 

16

System Balancing

Lighting Main Burner

Gas Rate Check

15. Handing Over 

18

16. Servicing & Maintenance 

19

Servicing Schedule

Servicing Sequence

Component Servicing Checklist

Gaining Access for Servicing

Main Burner Assembly

Ignition & Flame Detection Electrode

Heat Exchanger / Combustion Chamber

Combustion Air Fan

Air Circulating Fan

Condensate Drain Pipes

Condensate Pump

17. Replacement Plant 

23

Control Panel

Air Circulation Fan Assembly

Return Air Temperature Sensor

Flue Temperature Sensor

High Limit Temperature Sensor

Air Pressure Switch

Condensate Drain Pump

Main Ignition/Control PCB

Gas Valve & Venturi Assembly

Burner Assembly

Ignition Electrodes

Flame Detections Electrodes

Combustion Air Fan

18. Control Panel Modes 

26

19. Fault Code Table 

27

20. Fault Finding Flowcharts 

28

21. Defect Diagnosis for the Circulation Air Fan 

30

22. Functional Wiring Diagrams 

31

23. Dimensions 

33

24. Exploded Spares Diagrams 

34

25. List of Ancillaries 

37

26. Code of Practice 

38

27. Benchmark Checklist and Service Record 

39

Summary of Contents for WARMCAIR C26D

Page 1: ...nson Starley Ltd Rhosili Road Brackmills Northampton NN4 7LZ INSTALLATION COMMISSIONING SERVICING INSTRUCTIONS WARMCAIR C26D Condensing Air Heater High Efficiency Downflow Condensing Air Heater WarmCa...

Page 2: ...DATES TO THIS MANUAL ARE LISTED BELOW AND SHOULD BE NOTED BEFORE COMMENCING WITH ANY INSTALLATION WORK Date of Amendment Version No Page Description 01 02 2021 ZZ1446 3 15 Invalidation of guarantee by...

Page 3: ...Technical Data 6 6 Heater Positioning 7 7 Heater Compartment Clearances 7 8 Duct System 8 Return Air Warm Air Delivered 9 Flue Instructions 9 Flue Configurations Diagram of Terminal Positions Types o...

Page 4: ...RAL DESCRIPTION 2 1 The WarmCair C26D is a highly efficient condensing gas fired downflow forced convection air heater Significant reductions in Low Carbon and NOx emissions are achieved It has been d...

Page 5: ...Engineers IEE Wiring Regulations British System Design Manual Gas Fired Warm Air Heating EN Regulations No 1196 Supplementary Instructions Condensing Air Heaters 3 2 BUILDING STANDARDS AND REGULATIONS...

Page 6: ...appliance is certified as a CAT I 2H 20 appliance 4 2 2 Gas Supply a The gas installation must be completed in accordance with the relevant standards BS 6891 b The supply must be capable of providing...

Page 7: ...om the compartment walls of 3 mm 1 8 at the sides rear and front must be left Where clearances are less than 75 mm internal surface must be lined with non combustible material and the compartment must...

Page 8: ...red All such rooms should be fitted with relief grilles which have a free area of 0 0088 m2 kW 1in2 250 Btu h of heat supplied to the room The only exceptions are kitchens bathrooms and WC s 8 1 4 The...

Page 9: ...ELEVANT STANDARDS SHOULD BE FOLLOWED BS 5440 1 Flues and ventilation for gas appliances of rated heating input not exceeding 70 kW net Flues BS 5440 2 Flues and ventilation for gas appliances of rated...

Page 10: ...5 mm E Below eaves 200 mm F Below balconies 200 mm G From a vertical drain pipe or soil pipe 150 mm H From an internal or external corner Greater than 450 mm protrusion 300 mm I Above ground roof or b...

Page 11: ...8 1 A flue duct outlet of an appliance should be at least 600 mm from the boundary line when facing it and at least 300 mm from the boundary line when running parallel to it See Figure 6 NOTE When th...

Page 12: ...ontal Vertical 1000 0025570 7 Flat Roof Weather Collar 1 Vertical 1000 0014900 8 Pitched Roof Collar Black 1 Vertical 1000 0014890 9 Ridge Terminal Terracotta 1 Horizontal Vertical 1000 0021030 10 Wal...

Page 13: ...OF OPTION A Pitched Roof Collar can be fitted on a pitched roof with an angle of between 20 to 50 pitch 9 14 RIDGE TERMINAL OPTION The Ridge Terminal replaces a single 450 mm ridge tile and connects t...

Page 14: ...connected directly to the soil stack or waste pipe there must always be either a waste trap after the tubing connections or a 75mm U trap formed within the tubing 10 1 6 Where the tubing from the pump...

Page 15: ...BS 1362 Connections must also be in accordance with the current edition of IEE Regulations BS 7671 NOTE If for any reason the heater is re wired then 3 core cable that meets the above specification M...

Page 16: ...ound 14 1 2 Carry out preliminary electrical system checks 14 1 3 Ensure that a the filter fan and fan compartments are free from obstructions b all registers or grilles are open and conform to design...

Page 17: ...eriod the main burner has ignited the ESYS will show ON and the blue LED ON light on the indicator panel will remain steady 14 3 9 If the main burner fails to ignite you have 4 more attempts at igniti...

Page 18: ...fault is indicated they should note the fault code turn off the appliance and contact a competent person which in normal circumstances would be a GAS SAFE registered engineer 15 7 Explain and demonst...

Page 19: ...al test See Figure 17 16 2 4 For correct air heater operation the CO to CO ratio should be checked at the maximum and minimum in test mode 16 2 5 Check that the gas input is at least 90 of the nominal...

Page 20: ...Inspect and clean the spark ignition and flame sensing electrode removing any debris and oxidization Check the spark gap and position of the spark electrode and the positioning of the flame sensing e...

Page 21: ...W FLUE SEAL FLUE SENSOR SENSOR 45 FLYING LEADS SCREWS 16 6 HEAT EXCHANGER COMBUSTION CHAMBER 16 6 1 Refer to section 16 3 and 16 4 See Figure 29 16 6 2 Once the burner assembly has been removed inspec...

Page 22: ...he pipe to the flue outlet 16 9 7 Refit in reverse order 16 10 CONDENSATE PUMP 16 10 1 Refer to section 16 3 See Figure 25 16 10 2 Disconnect the electrical connections on the electrical panel for Con...

Page 23: ...n assembly and refit in reverser order 17 4 FAN FAILURE TEMPERATURE SENSOR 17 4 1 Refer to section 16 3 17 4 2 Remove the Air Circulation Fan Refer to 16 7 17 4 3 Unplug the 2 wires from the temperatu...

Page 24: ...tlet to fill the condensate drain pipe and check for leaks Reconnect the pipe to the flue outlet IMPORTANT The condensing tube from the combustion tray MUST be routed so the tube forms a S shape makin...

Page 25: ...a notch and the viewing window is in correct position 17 12 8 Re fit in reverse order 17 13 IGNITION ELECTRODES 17 13 1 Refer to section 16 3 See Figure 29 17 13 2 Unplug the lead from the ESYS red i...

Page 26: ...n speed value is will display this value can be changed by pressing the A and B buttons accordingly Once the required value is reached the values can be saved as minimum by pressing button D maximum b...

Page 27: ...sensor and wiring to control board Check operation of gas valve 2 False flame lockout False flame detected Check wiring on ESYS 3 Condense pump failure Power to the pump Check for any blockages restr...

Page 28: ...Temperature sensor shorted to Check wiring connections not shorting to earth Check sensor resistance 44 Return air temperature sensor open circuit Temperature sensor not connected or failed Check wir...

Page 29: ...29 Sales Spares Replacement Help Line 01604 762881 20 FAULT FINDING FLOW CHART...

Page 30: ...HE CIRCULATION AIR FAN 21 1 CIRCULATION AIR FAN 21 1 1 Ensure Air Circulation Fan is running at maximum 21 1 2 A voltage should be measured and blue and yellow Voltage approx 10 VDC 21 1 3 If voltage...

Page 31: ...X1 3 green X2 3 DSP MMI X4 3 DSP MMI green X2 1 PCB INTERFACE X2 1 black X2 4 DSP MMI X4 4 green X2 2 PCB INTERFACE X2 2 blue X2 5 DSP MMI X4 5 orange X2 3 PCB INTERFACE X2 4 yellow X3 2 PCB INTERFACE...

Page 32: ...een F2 ESYS X3 14 purple D2 ESYS 15 BULKHEAD DUCT AIR SENSOR orange C1 ESYS X3 8 orange C2 ESYS X3 16 X1 1 2 4 5 X5 X4 X2 X3 3 6 1 2 3 4 5 1 2 3 4 1 3 DSP MMI 1 3 ESYS 10 5 1 16 8 3 6 1 15 9 9 8 7 6 4...

Page 33: ...ares Replacement Help Line 01604 762881 23 DIMENSIONS FIGURE 34 C26D DIMENSIONS 186 106 58 46 597 21 23 342 122 1340 665 129 151 1200 485 430 381 C D 6 2 mCaire War FRONT VIEW SIDE VIEW TOP VIEW FRONT...

Page 34: ...J24 833 7 FLUE GAS SENSOR 1 1000 0522645 J24 836 8 GAS VALVE VENTURI Includes 9 10 1 1000 0710765 J24 773 9 VENTURI GASKET 1 1000 1508285 J24 771 10 CORK GASKET 2 1000 2501175 H38 674 11 BURNER ARM AS...

Page 35: ...833 20 COMBUSTION AIR BOX AS SEMBLY Includes 21 22 1 C26D 0132005 J24 826 21 SEALING RING 1 1000 2501685 J24 825 22 CONNECTOR SEAL 1 1000 2501715 23 CONDENSATE PUMP 1 C10D 0190005 J24 893 24 HEAT EXCH...

Page 36: ...0516835 28 ESYS CONTROL BOX 1 1000 0525645 J24 857 29 ESYS SCREW 1 1000 3004035 J24 855 30 ESYS COVER 1 1000 0522610 J24 856 31 CONDENSATE TRAP 1 1000 0024525 J24 749 32 VERTICAL FLUE ADAPTER 60 100mm...

Page 37: ...duct Code 1 CLEANFLOW AIR FILTER CF26 2 FILTER REPLACEMENT PADS Pack of 6 A0212X0212 3 CLEANFLOW TRANSITION KIT CTK26 4 RETURN AIR KIT Includes 4 5 RAK26 5 FLEXIBLE DUCTING 1000 0001390 6 QUICK RELEAS...

Page 38: ...to the customer any remedial or improvement work identified during the course of commissioning or servicing work Refer to the manufacturer s helpline where assistance is needed Report product faults...

Page 39: ...m start control Heating zone control Fitted Not required WARM AIR HEATER Has the system been balanced in accordance with the heater manufacture s instructions Yes No Was an anemometer used Yes No Yes...

Page 40: ...Company name Telephone No Gas safe register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 06 Date Engineer name Company name Telephone No Gas...

Page 41: ...Company name Telephone No Gas safe register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 06 Date Engineer name Company name Telephone No Gas...

Page 42: ...NOTES...

Page 43: ...NOTES...

Page 44: ...Rhosili Road Brackmills Northampton NN4 7LZ sales johnsonandstarley co uk customer service johnsonandstarley co uk service johnsonandstarley co uk marketing johnsonandstarley co uk Reception Customer...

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