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These appliances have been tested and certified by B G Technology for use with natural gas.

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BRIEF DESCRIPTION

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Air circulating fan

2

Control Panel

3

Data plate

4

Limit Switch

5

Multifunctional control

6

Burner and Control Assembly

7

Gas connection

8

Fan Delay Control

9

Piezo unit

10

Summer Air Circulation switch

11

Draught Diverter

JU SERIES WARM AIR HEATERS

INSTALLATION, COMMISSIONING & SERVICING INSTRUCTIONS

JU78:    G.C. No 42 417 79

JU117:     G.C. No 42 417 78
JU156:     G.C. No 42 417 77

Publication No. ZZ 602/6

June 2003

These instructions are to be left with the User or adjacent to the Gas Meter

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Fig. 1

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 APPLIANCES CONFORM TO BS800

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J

ohnson 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,

Brackmills,

Fax:

(01604)  767408

    Northampton NN4 7LZ

Summary of Contents for JU117

Page 1: ...e 2003 These instructions are to be left with the User or adjacent to the Gas Meter 1 Fig 1 General Layout Diagram 1 1 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 THESEAPPLIANCESCONFORMTOBS800 1 2 3 4 5 6 7 8 9 10 11 Johnso...

Page 2: ... 3A T6 3A 2 HEATER COMPARTMENTAND CLEARANCES See BS6230 2 1 When a heater is fitted into a compartment the following minimum clearances must be maintained 2 1 1 12mm 0 5in from rear and a side fitted with a blanking plate allowing extra space if a gas supply pipe enters the appliance from this side 2 1 2 600mm 24 in from a side fitted with a louvre side return panel 2 1 3 230mm 9 in from the front...

Page 3: ...e similarly insulated and in addition wrapped with a sound vapour proof barrier and protected from crushing 4 2 2 The duct system should be carefully designed as given in the guidelines in the British System Design Manual to suit the needs of its specific heating requirements and building layout The type of duct system i e radial extended plenum stepped should be installed using the least number o...

Page 4: ... The procedure is based on calculating the equivalent height of the flue under consideration i e that height of the straight vertical circular flue pipe of specific size which will produce the same flow rate as the flue under consideration The equivalent height is calculated from the formula Ki Ko e He Ha x ____________________ Ki Ko a Ke Ha Sum K where He is the height of the equivalent flue Ha i...

Page 5: ...2 x screws securing the Limit Switch and withdraw the control from the appliance 8 12 8 Refitment or replacement is in reverse order 8 13 HEAT EXCHANGERACCESS 8 13 1 Remove the upper and central front doors 8 13 2 Remove the Burner and Controls assembly as detailed in para 8 2 8 13 3 Release the 4 x securing screws and remove heat exchanger access plate and gasket from the front of the draught div...

Page 6: ... reverse order 8 8 CONTROL PANEL REMOVAL 8 8 1 Ensure that the electrical supply to the appliance is isolated 8 8 2 Release the 2 x securing screws and remove the appliance lower front door 8 8 3 At the Control Panel terminal block and referring to Fig 6 disconnect the following a 230V connections L N and E to the Air Circulating Fan at terminals 15 16 and 17 b 230V mains L N and E connections fro...

Page 7: ... except for very small rooms i e bathrooms etc Outlet faces may require partial blanking in order to achieve this 6 3 3 Set the SUMMER AIR CIRCULATION switch to OFF ZZ602 6 7 ZZ602 6 12 8 2 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 Switc...

Page 8: ...switches and summer air circulation switch and that the time control if fitted must be reset following a power failure 7 2 3 How to extinguish the pilot and main burner at the Multifunctional control and switch off electrical supply to the heater 7 2 4 How to remove clean and re fit the air filter if fitted and at what intervals i e fortnightly or weekly for new premises 7 2 5 How to control the h...

Page 9: ...er Pressure Settings ZZ602 6 10 AIRFLOW cfm Table 5 Fan Performance Curve ZZ602 6 9 1 Start button 2 Off button 3 Burner Pressure adjuster 4 Outlet Pressure test point 5 Pilot Adjuster Fig 4 Multifunctional Control 6 6 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 ...

Page 10: ...er Pressure Settings ZZ602 6 10 AIRFLOW cfm Table 5 Fan Performance Curve ZZ602 6 9 1 Start button 2 Off button 3 Burner Pressure adjuster 4 Outlet Pressure test point 5 Pilot Adjuster Fig 4 Multifunctional Control 6 6 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 ...

Page 11: ...switches and summer air circulation switch and that the time control if fitted must be reset following a power failure 7 2 3 How to extinguish the pilot and main burner at the Multifunctional control and switch off electrical supply to the heater 7 2 4 How to remove clean and re fit the air filter if fitted and at what intervals i e fortnightly or weekly for new premises 7 2 5 How to control the h...

Page 12: ... except for very small rooms i e bathrooms etc Outlet faces may require partial blanking in order to achieve this 6 3 3 Set the SUMMER AIR CIRCULATION switch to OFF ZZ602 6 7 ZZ602 6 12 8 2 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 Switc...

Page 13: ... reverse order 8 8 CONTROL PANEL REMOVAL 8 8 1 Ensure that the electrical supply to the appliance is isolated 8 8 2 Release the 2 x securing screws and remove the appliance lower front door 8 8 3 At the Control Panel terminal block and referring to Fig 6 disconnect the following a 230V connections L N and E to the Air Circulating Fan at terminals 15 16 and 17 b 230V mains L N and E connections fro...

Page 14: ...2 x screws securing the Limit Switch and withdraw the control from the appliance 8 12 8 Refitment or replacement is in reverse order 8 13 HEAT EXCHANGERACCESS 8 13 1 Remove the upper and central front doors 8 13 2 Remove the Burner and Controls assembly as detailed in para 8 2 8 13 3 Release the 4 x securing screws and remove heat exchanger access plate and gasket from the front of the draught div...

Page 15: ... The procedure is based on calculating the equivalent height of the flue under consideration i e that height of the straight vertical circular flue pipe of specific size which will produce the same flow rate as the flue under consideration The equivalent height is calculated from the formula Ki Ko e He Ha x ____________________ Ki Ko a Ke Ha Sum K where He is the height of the equivalent flue Ha i...

Page 16: ...e similarly insulated and in addition wrapped with a sound vapour proof barrier and protected from crushing 4 2 2 The duct system should be carefully designed as given in the guidelines in the British System Design Manual to suit the needs of its specific heating requirements and building layout The type of duct system i e radial extended plenum stepped should be installed using the least number o...

Page 17: ... 3A T6 3A 2 HEATER COMPARTMENTAND CLEARANCES See BS6230 2 1 When a heater is fitted into a compartment the following minimum clearances must be maintained 2 1 1 12mm 0 5in from rear and a side fitted with a blanking plate allowing extra space if a gas supply pipe enters the appliance from this side 2 1 2 600mm 24 in from a side fitted with a louvre side return panel 2 1 3 230mm 9 in from the front...

Page 18: ...e 1 1 1 9 397819 BOS02394 Electrode lead 1 1 1 10 U780 0700000 Burner and Controls Assembly 1 U117 0700000 Burner and Controls Assembly 1 U560 0700000 Burner and Controls Assembly 1 11 U780 0752000 Main Burner 2 3 4 12 1000 0703720 Main Injector BRAYCat 33 1250 2 3 4 13 BOS01676 4 Cross Lighting Injector InterAlbion T100 1 1 14 S00461 Heat Exchanger exchange kit 1 S00462 Heat Exchanger exchange ki...

Page 19: ...e 2003 These instructions are to be left with the User or adjacent to the Gas Meter 1 Fig 1 General Layout Diagram 1 1 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 THESEAPPLIANCESCONFORMTOBS800 1 2 3 4 5 6 7 8 9 10 11 Johnso...

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