Bradford White LAARS OmniTherm ONV1250 Manuals

Manuals and User Guides for Bradford White LAARS OmniTherm ONV1250. We have 1 Bradford White LAARS OmniTherm ONV1250 manual available for free PDF download: Installation And Operation Instructions Manual

Bradford White LAARS OmniTherm ONV1250 Installation And Operation Instructions Manual (132 pages)

With Laars Linc

Brand: Bradford White | Category: Boiler | Size: 11 MB

Table of Contents
2
SECTION 1 General Information 1.A Introduction

5
- B Warranty
  5
- C Model Identification
  5
- D Safety Notes
  6
- E Unit Dimensions and Components
  8
- Model 1250 / 1500
  8
- Model 1750
  10
- Models 2000 / 2500
  12
- F Unpacking
  14
- G Locating the Unit
  14
- H Clearances
  14
SECTION 2 Venting and Combustion Air

15
SECTION 3 Gas Supply and Piping

23
- A Gas Supply and Piping
  23
- B Gas Pipe Sizing
  24
SECTION 4 Water Flow and Headloss Data

24
SECTION 5 Piping

27
- Boiler Water Piping
  27
- Boiler Water Connections
  27
- Cold Water Make-Up
  27
  - Freeze Protection
    27
- Suggested Boiler Piping Schematics
  28
- Water Heaters
  32
- Water Quality
  32
- Heater Water Connections
  32
- Cold Water Make-Up
  32
- Freeze Protection
  32
- Suggested Piping Schematics
  32
SECTION 6 Condensate Drain Trap

34
SECTION 7 Electrical Connections

34
- Installation Warnings
  34
- Main Power Connections
  35
- Main Power Data
  35
- Control Panel Layout
  36
- Field Connections
  36
- Power
  37
- Boiler Pump
  37
- Dry Contacts
  37
- Alarm Bell
  37
- Sensors
  37
- Heat Demands
  38
- Spare Inputs
  38
- Inputs, BMS
  38
- Outputs, Pump
  38
- Dry Contacts (Run & Alarm)
  38
- RS 485 for Cascade (Lead Lag)
  38
- Rs485 Bms
  38
- Modbus/Bacnet Memory Map
  40
- Wiring Diagrams - High Voltage
  44
- Logic Diagrams
  49
SECTION 8 Control Operation

54
- The Home Screen
  54
- Home Screen Active Icons
  54
  - Keypad Operations
    55
- Login to Lock / Unlock the Disp Screen
  56
- Quick Start
  57
- Central Heat)
  57
- CH1 (Central Heat, One) 1
  58
- CH2 (Central Heat, Two) 2
  58
- DHW (Domestic Hot Water)
  58
- Outdoor Reset
  59
- Warm Weather Shut down
  59
- Anti-Short Cycle
  60
- Time & Date
  60
- D Configuration
  61
- Central Heat)
  62
- D.1.A CH1 (Central Heat, One)
  62
- D.1.A.1 PID Low
  63
- D.1.A.2 PID High
  63
- D.1.B CH2 (Central Heat, Two)
  63
- DHW (Domestic Hot Water)
  64
- Outdoor Reset
  65
- Cascade
  66
- D.4.A Cascade Parameters
  67
- D.4.B Rotation
  68
- D.4.B.1 Rotation Setup
  68
- D.4.C Redundancy
  69
- Pumps
  70
- D.5.A Vari-Prime
  71
- Manual Firing Rate
  72
- Temp Limits
  72
- D.7.A Delta T Parameters
  73
- D.7.B Flue Limitation Parameters
  73
- D.7.C Outlet Limitation Parameters
  73
- External
  74
- D.8.A External - Remote Set Point
  75
- Time & Date
  75
- Miscellaneous Features
  76
- D.10.A Demands Priorities
  77
- D.10.B Anti-Short Cycle
  77
- D.10.C Warm Weather
  78
- D.10.D COM Port, BMS
  79
- D.10.E Temperature Conversion
  80
- D.10.F Anti-Frost
  80
- Login
  81
- E Service Screens
  82
- Burner
  82
- Digital I/O Inputs
  83
- E.2.A Digital Outputs
  83
- Analog I/O
  84
- Screen Settings Timeout
  85
- History
  85
- Restart Touchscreen & Recalibrate
  86
- Factory Reset
  86
- HMI Model OEM Only
  86
- BIC Model OEM Only
  86
- Both Models. OEM Only
  86
- About the Firmware of the Touchscreen
  86
- Dev Fan
  86
- Fan Settings
  86
- F Messages and USB
  87
- Messages
  87
- USB Functionality
  87
- Active Demands
  88
SECTION 9 Gas Valve Touchscreen, Menus and Descriptions

89
- About the Gas Valve
  89
- Menu Structure (Example)
  90
- Gas Valve Display Navigation and Menus
  90
- Fuel Air Ratio & Ignition, Menus
  93
- Oem
  93
- Ignition Menu
  94
- Base Curve Menu
  95
- Correction Curve Menu
  95
- Summary Menu
  96
- Load & Save Menu
  96
- Diagnostics
  97
- Verification Menu
  98
- Gas Valve Password & Login Menu
  100
SECTION 10 Parameter Tables

101
SECTION 11 Initial Startup Instructions

105
- Filling the Boiler System
  105
- Initial Operation
  106
- Initial Burner Operation
  106
- Shutting down the Unit
  106
- Restarting the Unit
  106
- Combustion Setup
  107
- Firing Rate for Boiler
  107
- Combustion at the Gas Valve Display
  108
SECTION 12 Maintenance

109
- System Maintenance
  109
- Maintenance Notes
  109
- Burner
  109
- Gas Valve / Venturi
  109
- Main Omnitherm Controller
  110
- Valve Control / Display
  110
- Spark & Flame Sensors Electrodes
  110
- Blower
  110
- Heat Exchanger Tubes
  110
- Gas Pressure Switches
  111
SECTION 13 Troubleshooting

112
- Error Codes
  112
SECTION 14 Replacement Parts

116
- General Information
  116
- Component Illustrations, Parts Lists, and Part Numbers
  116

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Bradford White LAARS OmniTherm ONV1250 Manuals

Bradford White LAARS OmniTherm ONV1250 Installation And Operation Instructions Manual (132 pages)

Table of Contents

SECTION 1 General Information 1.A Introduction

SECTION 2 Venting and Combustion Air

SECTION 3 Gas Supply and Piping

SECTION 4 Water Flow and Headloss Data

SECTION 5 Piping

SECTION 6 Condensate Drain Trap

SECTION 7 Electrical Connections

SECTION 8 Control Operation

SECTION 9 Gas Valve Touchscreen, Menus and Descriptions

SECTION 10 Parameter Tables

SECTION 11 Initial Startup Instructions

SECTION 12 Maintenance

SECTION 13 Troubleshooting

SECTION 14 Replacement Parts

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