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INSTALLATION, COMMISSIONING & SERVICING INSTRUCTIONS
These appliances have been tested and certified by B G Technology for use with natural gas.
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General Layout Diagram
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JU78, JU117 and JU156 are open-flued, fan assisted Upflow, ducted warm air heaters, the outputs of which are as
follows:
JU78:
23.0kW (82.8MJ/h, 78,500Btu/h)
JU117:
34.3kW (123.4MJ/h, 117,000Btu/h)
JU156:
45.7kW (164.5MJ/h, 156,000Btu/h)
These instructions are to be left with the User or adjacent to the Gas Meter
JU SERIES WARM AIR HEATERS
JU78: G.C. No 42 417 79
JU117:
JU156:
BRIEF DESCRIPTION
Fig. 1
THESE APPLIANCES CONFORM TO BS800
G.C. No 42 417 78
G.C. No 42 417 77
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Publication No. ZZ 602/6
Air circulating fan
Control Panel
Data plate
Limit Switch
Multifunctional control
Burner and Control Assembly
Gas connection
Fan Delay Control
Piezo unit
Summer Air Circulation switch
Draught Diverter
June 2003
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Related Manuals for Johnson & Starley JU156
Summary of Contents for Johnson & Starley JU156
- Page 1 Piezo unit Summer Air Circulation switch Draught Diverter Fig. 1 General Layout Diagram JU78, JU117 and JU156 are open-flued, fan assisted Upflow, ducted warm air heaters, the outputs of which are as follows: JU78: 23.0kW (82.8MJ/h, 78,500Btu/h) JU117: 34.3kW (123.4MJ/h, 117,000Btu/h) JU156: 45.7kW (164.5MJ/h, 156,000Btu/h)
- Page 2 SAFETY (INSTALLATION AND USE) REGULATIONS (CURRENT EDITION). FAILURE TO COMPLY WITH THESE REGULATIONS MAY LEAD TO PROSECUTION. GENERAL DATA JU78 JU117 JU156 Appliance height (excluding air discharge top or swivel heads) 1830mm (72in) 1830mm (72in) 1830mm (72in) Appliance width 375mm (14.8in) 525mm (20.7in) 675mm (26.2in) Appliance depth 778mm (30.6in) 778mm (30.6in) 778mm (30.6in)
- Page 3 (42 in JU117 - High Level 197 cm (31 in JU117 - Low Level 393 cm (62 in JU156 - High Level 261 cm (41 in JU156 - Low Level 522 cm (82 in Table 1: Minimum Effective Areas DUCT SYSTEM...
- Page 4 ZZ602/6 INSTALLATION REQUIREMENTS 5.1 FLUES (see British Standards BS5440 Pt.1 Flues) 5.1.1 All joints shall be soundly sealed. 5.1.2 The flue should be kept as short and warm as possible. 5.1.3 Sufficient support brackets shall be installed to bear the weight of the total flue system. 5.1.4 The spigot connection of the heater draught diverter will accept internally the spigot end of a non-asbestos flue to BS567 or twin wall metal flue to BS715 of nominal diameter as specified in para 1.2.
- Page 5 ZZ602/6 Component Internal Size Resistance Component Internal Size Resistance (mm) Factor (mm) Factor Flue Blocks 197 x 67 0.85 per meter Bend 100 mm pipe 0.61 per 231 x 65 0.65 run 125 mm pipe 0.25 fitting 317 x 63 0.35 150 mm pipe 0.12...
- Page 6 ZZ602/6 STET Terminal 2 x 300 mm lengths 100 mm dia flue pipe = 6.2m 4.6m 4 x 1000 mm lengths bend 300 mm length 1.6m bend 2 x 300 mm lengths Appliance draught diverter Fig. 2 Worked example of equivalent flue height 5.1.12 Where flue blocks are used, builders should ensure that no obstruction is created during erection.
- Page 7 ZZ602/6 5.1.15 Special consideration must be given to external flues with a view to prevention of condensation and weathering problems. ELECTRICAL 5.2.1 Mains. A single phase 230V 50Hz mains connection from a fused spur, rated at 13A with a double pole switch for isolation is required for the installation.
- Page 8 ZZ602/6 IGNITION OF PILOT AND MAIN BURNERS: WARNING: If the pilot light is extinguished either intentionally or unintentionally, no attempt should be made to relight the gas for a minimum of 3 minutes. Ensure that the Electrical supply, Time Control and Selector switches are set to ‘OFF’.
- Page 9 ZZ602/6 Start button Off button. Burner Pressure adjuster. Outlet Pressure test point Pilot Adjuster Fig. 4 Multifunctional Control EXTINGUISHING OF BURNERS AND TEMPERATURE RISE TEST: 6.6.1 At the Multifunctional control press the OFF button and ensure that both the Main and Pilot burners extinguish. 6.6.2 Remove the pressure test gauge from the Multifunctional Control and refit the Outlet Pressure test point cover.
- Page 10 6.8.13 Re-ignite the Pilot burner as detailed in sub-paras 6.4.5 and 6.4.6 6.8.14 Ensure that the Main Burner re-ignites when the appliance temperature reduces, (note: with the fan having been disconnected, there may be some delay before the Main Burner re-ignites). JU78 JU117 JU156 MJ/h Btu/h MJ/h Btu/h...
- Page 11 ZZ602/6 INSTRUCTIONS FOR USERS If the building is unoccupied, ensure that the Instructions for User are left taped to the air heater for the User, and Installation Instructions are left at or near the air heater for use on future service calls. If the building is occupied, hand the User Instructions over and ensure the User understands: 7.2.1 How to ignite the pilot and burner.
- Page 12 ZZ602/6 BURNER AND CONTROLS ASSEMBLY REMOVAL: 8.2.1 Ensure that the Gas and Electrical supplies are switched OFF 8.2.2 Remove the appliance central front door. 8.2.3 Disconnect the Multifunctional Control and Limit Switch electrical connections. 8.2.4 Disconnect the gas supply by breaking the union at the input side of the Multifunctional Control. 8.2.5 Remove the 4 x Burner assembly fixing screws and withdraw the Burner and Controls Assembly.
- Page 13 ZZ602/6 MULTIFUNCTIONAL CONTROL REMOVAL: 8.6.1 Remove the Burner and Controls Assembly as detailed in 8.2 8.6.2 Disconnect the Thermocouple and adapter at the Multifunctional Control, avoiding damage to the capillary. 8.6.3 Disconnect the Pilot Feed Pipe from the Multifunctional Control. 8.6.4 Disconnect the Multifunctional Control input and output supply feeds.
- Page 14 ZZ602/6 8.12 LIMIT SWITCH REMOVAL: 8.12.1 Ensure that the electrical supply is isolated. 8.12.2 Remove the appliance central front door. 8.12.3 Disconnect the 2 BLUE conductors from the Interrupter at the Multifunctional Control. 8.12.4 Release the 2 x screws securing the Fan Delay Control cover, and withdraw the cover. 8.12.5 Release the 2 x screws securing the Temperature Probe assembly, and withdraw the assembly.
- Page 15 ZZ602/6 c. Main burner lights Loose electrical connection Check connections. but fan fails to run Fan Delay Control. after approx. 3 min. Fan Delay Control set incorrectly. Check for correct settings. iii. Faulty fan assembly. Replace, taking care not to damage impeller.
- Page 16 7 AND 9 ARE JU117 C1=7uF JU156 C1=16uF DO NOT EARTH PILOT JU78 FAN MOTOR Wire colour code where indicated MAIN WINDINGS LABEL REF NO 1000-2205540-02 CIRCUIT DIAGRAM: JU78, JU117 AND JU156 AIR HEATERS Fig. 5 JU Series Air Heaters Wiring Diagram...
- Page 17 ZZ602/6 Fig. 6 JU Series Air Heaters Principle Dimensions...
- Page 18 ZZ602/6 SHORT LIST OF SPARES ITEM G.C. MAKER’S DESCRIPTION JU78 JU117 JU156 JAH82/545 Fan assembly JAH122/545 Fan Assembly JAH163/545 Fan Assembly BOS1858 Filter tray assembly (if fitted) 1000-0514840 Limit Switch 1000-0522200 Temperature Probe Assembly U560-0530000 Thermo-Switch Assembly BOS 01841 Multifunctional control...
- Page 19 Johnson and Starley prides itself on its ability to supply spare parts quickly and efficiently. If you have a problem in obtaining a spare part, please contact Johnson and Starley Spares Department at the address below. JOHNSON & STARLEY LTD. Telephone: (01604) 762881 Rhosili Road,...
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