Johnson & Starley HI-SPEC J25 - User Manual

HI-SPEC J25 WARM AIR HEATERS
SYSTEM E-T and Basic Control
INSTALLATION, COMMISSIONING & SERVICING INSTRUCTIONS
G.C. No 42 451 04
Publication No. ZZ 753/12
January 2010
These instructions are to be left with the User or adjacent to the Gas Meter
1
28
Johnson
& Starley
1 Air filter
2 Air circulating fan
3 Heat exchanger access cover
4 Multifunctional control
5 Data Plate
6 Heat shield
7 Burner assembly
8 Pilot burner
9 Lighting port
10 Fan delay control/limit switch
11 Gas supply pipe
12 Piezo igniter unit
13 Time control
2
3
5
10
8
9
7
6
12
4
13
1
11
Fig. 1
This appliance ha been tested and certified by G. L. Industrial Services UK Ltd. for use with natural gas G20.
Note: If a HIJAN 6 or SUPERJAN 6 circulator is fitted, the relevant Installation, Commissioning and Servicing instructions
provided with that appliance must also be observed.
1. BRIEF DESCRIPTION
1.1 HI-SPEC J25 is an open-flued, fan assisted downflow, ducted warm air heater, which may be supplied with SYSTEM E-T or
Basic control. A HIJAN 6 or SUPERJAN 6 circulator is available as an option. A pilot burner incorporating an Atmospheric
Sensing Device (ASD) is fitted which responds to the presence of flue gases and shuts down the appliance.
1.2 The Air heater output can be adjusted between 5.6kW (20.0MJ/h, 19,000Btu/h) and 7.3kW (26.4MJ/h, 25,000Btu/h). “Summer
air circulation” of unheated air is available by manual selection (see User’s Instructions). HIJAN 6 output is 3.81kW (13.7MJ/
h, 13,000Btu/h), whilst SUPERJAN 6 output is 6.0kW (21.6MJ/h, 20,470Btu/h).
THIS APPLIANCE CONFORMS TO BS EN 45014
10. SHORT LIST OF SPARES
HI-SPEC J25
KEY G.C No MFR’S No DESCRIPTION QTY
1 232 878 BOS 02064 Fan Assembly 1
2 381 627 1000-0701140 Multifunctional Control (S.I.T. Nova) 1
3 379 837 1000-0704250 Pilot Assembly (S.I.T.) 1
4 378 466 BOS 02031 Time Control 1
5 245 503 T193-0751000 Burner Assembly 1
6 398 388 BOS 02060 Main Injector (Bray 33/700) 1
7 395 945 1000-0701160 Piezo Unit (High Energy) 1
8 245 509 1000-0513820 Fuse T3.15A anti-surge 1
9 T193-0145000 Filter Tray 1
10 364 835 S00832 Solenoid Valve 1
11 242 228 S00174 Heat Exchanger 1
12 245 542 1000-0515970 Capacitor 15 uF 1
System E-T Models only
13 245 510 ET 001 Electronic Panel Assembly with daughter board 1
14 245 514 1000-0515620 Thermista-stat 1
15 245 515 1000-0515455 Fan Delay/Overheat (limit) switch 1
16 1000-0515090 Mains Filter 1
18 T193 0531000 Complete Electrical panel 1
T193 0131000 Cabinet Door Assembly 1
Basic Control Models only
19 T193 0530000 Electrical Panel 1
20 245 520 1000-0516125 Fan delay/Overheat (limit) switch 1
21 245 522 1000-0515200 Transformer Fan Speed 1
22 245 525 1000-0515730 Transformer 24 volt 1
23 245 413 1000-0511760 Relay Module 1
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,
Brackmills,
Fax: (01604) 767408 Northampton NN4 7LZ

Summary

Brief Description of Hi-Spec J25 Warm Air Heater

Heater Compartment and Clearances

Ventilation and Combustion Air Requirements

Duct System Installation

Return Air Duct System

Details regarding the routing and installation of the return air duct.

Warm Delivered Air Duct System

Guidance on the installation and insulation of warm air ductwork.

Installation Requirements

Flue Installation Requirements

Requirements for flue installation, sealing, support, and type.

Electrical Connections and Settings

Gas Supply Requirements

Draught Diverter and Deflector Plate

Commissioning Procedures

Commissioning Preparation

Checks and preparation before commissioning the heater.

System Balancing

Procedure for balancing the warm air system for correct airflow.

Pilot and Main Burner Ignition

Step-by-step guide for igniting the pilot and main burners.

Main Burner Pressure Test

Procedure for testing and setting the main burner pressure.

Extinguishing Pilot and Main Burners

Steps to safely extinguish the pilot and main burners.

Temperature Rise Check

Checking the temperature rise across the heater and adjusting fan speed.

Automatic Controls Check

Verifying the operation of thermostats and time controls.

Safety Checks

Essential safety tests including gas soundness and spillage tests.

Instructions for Users

Maintenance Procedures

Routine Maintenance

Step-by-step guide for regular cleaning and inspection of components.

Burner and Control Assembly Removal

Procedure for safely removing the burner and control assembly.

Burner and Control Assembly Cleaning

Instructions for cleaning the burner and control assembly.

Pilot Burner Assembly Removal and Replacement

Procedure for removing and replacing the pilot burner assembly.

Multifunctional Control Removal

Steps to remove the multifunctional control unit.

Piezo Unit Removal

Procedure for removing the piezo ignition unit.

Air Circulating Fan Removal and Cleaning

Instructions for removing and cleaning the air circulating fan.

Electrical Assembly Removal

Steps for removing various electrical components and assemblies.

Electronic Module Removal

Procedure for removing the electronic module (SYSTEM E-T models).

Transformer Removal

Procedure for removing the transformer (BASIC Control models).

Time Control and Switch Removal

Steps for removing the time control and switches.

Fan Delay Control;Limit Switch Removal

Procedure for removing fan delay and limit switches.

Heat Exchanger Access

Steps to access the heat exchanger for inspection or cleaning.

Defect Diagnosis and Troubleshooting

Short List of Spares

Johnson & Starley HI-SPEC J25 Specifications