andrews NEOflo SC25/200, Installation, Operation And Maintenance Manual

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NEO fl o Water Heater 2 September 2015
User Instructions 3
Gas Safety Standards 5
Health & Safety Regulations 5
Combatting Legionella 6
Decommissioning, disposal & recycling 6
Heater Location 8
Water Quality & Treatment 8
Water Connections 8
Unvented Water Supply 10
Condensate Drain 10
Flue Systems 12
Flue Equivalent Length Calculation 12
Ventilation Requirements 17
Gas Supply 17
Electrical Connections 18
Filling 20
Starting 20
Commisioning
the Burner 20
INSTALLATION OF HEATER 6
Operation 21
Controls & Lockouts 21
Diagnostics 22
Routine Service 23
Burner & Combustion Chamber 23
Spark & Sense Electrode 23
Air & Flue Duct Seals 23
Condensate Syphon 23
Gas Rate & Combustion 23
Pressure Temperature Safety Valve 24
LCD Display 24
High Limit Sensor 24
Control Sensor 24
Flue Th ermostat 24
Ignition Control 24
Electrode & Gasket 24
Gas Valve 24
Fan 25
Venturi 25
List of Figures & Tables
Page
Fig 1.1 User Control 3
Fig 2.1 General Dimensions 7
Fig 3.1 Open Vent Example 9
Fig 3.2 Re-Circulation Design 9
Fig 3.3 De-Strati fi cation Design 9
Fig 4.1 Unvented Design 11
Fig 5.1 Condensate Soakaway 11
Fig 5.2 Condensate Soil Stack 11
Fig 5.3 Condensate Internal Sink 11
Fig 5.4 Condensate Gully 11
Fig 6.1 Flue Parts 13
Fig 6.2 Open Flue Systems 14
Fig 6.3 Horizontal Flue Systems 14
Fig 6.4 Vertical Flue Systems 15
Fig 6.5 Flue Terminal Dimensions 15
Fig 6.6 Terminal Locations 16
Fig 7.1 Electrical Connections 18
Fig 7.2 Wiring Diagram 19
Fig 8.1 Th rottle Adjustment 20
Fig 8.2 User Control 20
Fig 9.1 Th rottle Adjustment 24
Fig 9.2 LCD Display 25
Fig 9.3 Heater Components External 26
Fig 9.4 Heater Components Internal 27
Fig 9.5 Spares Components 28
Table 1.0 Lockout Codes 21
Section Page
FAULT FINDING 21
TECHNICAL DATA Inside cover
COMMISSIONING & SERVICE
HISTORY Inside
back cover
SERVICING 23
CONTENTS
GENERAL & SAFETY INFORMATION 5
INSTALLATION OF HEATER 8
COMMISSIONING 20
CHANGING COMPONENTS 23
SPARES COMPONENTS 25