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Sales/Spares 01604 707012   Replacement Help Line 01604 707011

1.   GENERAL INFORMATION

IT IS A

 

STATUTORY REQUIREMENT THAT ALL GAS APPLIANCES MUST BE 

INSTALLED BY COMPETENT PERSONS, (i.e. CORGI REGISTERED INSTALLERS. 
CORGI MEMBERSHIP ENQUIRIES - TEL: 0800 915 0485) IN ACCORDANCE WITH 
THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS (CURRENT EDITION). 
FAILURE TO COMPLY WITH THESE REGULATIONS MAY LEAD TO PROSECUTION.

WARNING: THIS APPLIANCE MUST BE EARTHED.

1.1  

Part of the installation and commissioning of this appliance is related to instructions for use by the 
heating engineer to the user where specific requirements may occur, see note below.

 

This appliance is not intended for use by persons (including children) with reduced physical, sensory or 
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or 
instruction concerning use of the appliance by a person responsible for their safety.

1.2  IDENTIFICATION OF YOUR HEATER TYPE

1.2.1  Your heater will be a 

System E-T 

model, see list above.

1.2.2  System E-T model heaters are clearly identified on the front of the appliance and controlled by 

a Thermista-stat.

1.3  WHAT IS SYSTEM E-T?

1.3.1  System E-T is a control that is in built into the warm air system, and which continuously adjusts the 

heaters’ operation to maintain the comfort level that you have selected. It provides a continuous 
supply of warm air, at just the right amount, to keep the selected temperature at a very precise 
level.

1.3.2  By setting the Thermista-stat to the temperature (comfort level) you require, it constantly 

measures the actual room temperature and compares it with the required temperature, and tells 
the heater how much warm air to supply in order to maintain the comfort level you have selected. 
When the comfort level is reached, the burner will cycle on and off, whilst the fan operates at a 
varying speed to maintain the comfort level.

1.3.3  The Thermista-stat is usually situated in the living room where it provides very accurate comfort 

level control. Since the Thermista-stat controls the heater, it also controls the warm air delivery 
to other rooms. The warm air system should be ‘balanced’ to deliver the correct proportion of 
warm air to each room, and is usually carried out during installation. Adjustments can be made 
to individual registers (air outlets). By increasing the air flow, the temperature is increased, and 
conversely, for reduction in air flow the temperature is decreased.

1.3.4 

Economy

 - If you wish to economise by cutting off heat to an unused room, simply close the 

register to that room. System E-T will automatically adjust the operation of the heater and save 
gas.

1.3.5 

Quick warm up -

 System E-T warms houses much quicker than radiator systems, however, if 

you turn on the warm air to a room when the rest of the house is already warm and the system 
is operating at less than full output, that room will warm up more slowly. 

123456

FRONT VIEW

MANUAL

RESET 

BUTTON

FIGURE 1.  IGNITION CONTROL IN PLACE

Summary of Contents for HI-SPEC J25SCA

Page 1: ...12 J25SCA AIR HEATER G C No 43 416 99 ELJAN 4 SE A WATER CIRCULATOR G C No 43 417 58 USER S INSTRUCTIONS HI SPEC J25SCA Warm Air Heater System E T Control Eljan 4 SEA Water Circulator These instructio...

Page 2: ...with the appropriate Building Regulations England and Wales All installations must be notified to Local Area Building Control either directly or through a Competent Persons Scheme A Building Regulatio...

Page 3: ...r at just the right amount to keep the selected temperature at a very precise level 1 3 2 By setting the Thermista stat to the temperature comfort level you require it constantly measures the actual r...

Page 4: ...onds after which time the ignition burner and main burner SHOULD ignite and the igniter will stop 2 2 7 If the main burner fails to ignite the red LED marked LOCKOUT will illuminate on the blue box 2...

Page 5: ...ATS THE CONTENTS OF THE HOT WATER CYLINDER THERE WILL BE SOME DELAY BETWEEN ANY CHANGE MADE AND A CHANGE IN THE TEMPERATURE OF THE HOT WATER 4 TIME CONTROLS 4 1 The integral time control Figure 2 enab...

Page 6: ...oviding this information please contact Johnson and Starley Service Department who will provide information of suitable service companies 6 TROUBLE SHOOTING 6 1 Check that the Thermista stat and Time...

Page 7: ...E from your Gas Service Centre before making any alterations likely to reduce the supply of fresh air to the heater 8 2 DO KEEP CLEAN and make sure you DO NOT OBSTRUCT any grilles on the heater in the...

Page 8: ...co uk marketing johnsonandstarley co uk Reception 01604 762881 Sales Spare 01604 707012 Service Warm Air Heating 01604 762881 Warm Air Upgrade 01604 707011 Johnson Starley Dravo Division Industrial H...

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