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CONTENTS

Section

Title

Page

1.

Introduction

1

2.

Technical Data

2

3.

General Requirements

3

4.

Installation

4

5.

Air Distribution System

5

6.

Commissioning & Testing

5

7.

Servicing

6

8.

Connections to Powrmatic
External Controls

7

9.

Fault Finding

8

10.

Short List of Parts

8

Tables

Title

Page

1.

Dimensions

2

2.

Performance Data

2

3.1

Burner Pressures - Natural Gas
Group H - G20

2

3.2

Burner Pressures - Propane - G31

2

4.

Electrical Loadings

3

Figure

Title

Page

1.

Gas Control Schematic NCA-G 100 - 300

6

2a.

Gas Controls Layout NCA-G 100, 150

6

2b.

Gas Controls Layout NCA-G 200, 300

6

3.

Honeywell L4064N

7

Appendix

Title

Page

A

Calculation Of Flue System 

Inside

Equivalent Resistance

Back Cover

Summary of Contents for NCA-G 100

Page 1: ...Installation and Servicing Instructions WARNING THIS APPLIANCE MUST BE EARTHED CE 2 50 When supplied separately NCA G Range Issue 4 Feb 1999 The NCA G Range...

Page 2: ...g 8 10 Short List of Parts 8 Tables Title Page 1 Dimensions 2 2 Performance Data 2 3 1 Burner Pressures Natural Gas Group H G20 2 3 2 Burner Pressures Propane G31 2 4 Electrical Loadings 3 Figure Titl...

Page 3: ...to circulate the air being heated Heaters are fitted as standard with fully automatic monoblock forced draught gas burners and monoblock gas control assemblies Options include High Low or modulating...

Page 4: ...NCA G 100 PCGS 2 N A 4 8 GS 5 N A 4 3 3 40 120 0 NCA G 150 PCGS 2 N A 9 9 GS 5 N A 4 2 5 12 180 8 NCA G 200 PCGS 3 N A 12 2 GS 10 N A 3 7 7 08 250 0 NCA G 300 PCGS 5 N A 10 4 GS 10 N A 5 2 10 89 384...

Page 5: ...l with the total rate of gas supply required 3 3 3 Installation Pipes Installation pipes should be fitted in accordance with IM 16 1988 Pipework from the meter to the air heater must be of adequate si...

Page 6: ...plant room to avoid interference with the operation of the flue by the air circulation fan The openings in the structure of the plant room through which the ducting passes must be fire stopped Care mu...

Page 7: ...d attenuators may be fitted in inlet and outlet ducts to reduce airborne fan noise Materials used in outlet sound attenuators must be capable of withstanding 100 C air temperature without any deterior...

Page 8: ...hose values required by the User Finally advise the user or purchaser that for continued efficient and safe operation of the air heater it is important that servicing is carried out annually In the ev...

Page 9: ...se the unions on the connections at each end of the assemby and remove complete assembly Fit new assembly in reverse order ensuring the valve assembly is correctly orientated for the direction of gas...

Page 10: ...Fan thermostat set too low check setting See Section 7 6 5 3 Faulty fan thermostat change Main fan fails to run Electrical 1 Fan motor or capacitor failed replace 2 Fan thermostat faulty replace 3 Fan...

Page 11: ...Mean exhaust gas velocity in m s PRF Can be calculated from PRF 0 118 0 21147 D 0 4 Where D Internal Diameter of flue in m SRF Typical resistance factors for individual components are as follows Segm...

Page 12: ...provement we reserve the right to alter specifications without prior notice HEATING DIVISION Winterhay Lane Ilminster Somerset TA19 9PQ Tel 01460 53535 Fax 01460 52341 BSI Registered Firm FM 414 Ind C...

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