Bradford White LAARS OmniTherm ONH1250, Инструкция по установке и эксплуатации

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LAARS Heating Systems
Table of Contents
i
SECTION 1 General Information
1.A Introduction ................................................. 5
1.B Warranty ..................................................... 5
1.C Model Identification
..................................... 5
1.D Safety Notes ............................................... 6
1.E Unit Dimensions and Components ............. 8
1.E.1 Model 1250 / 1500 ...................................... 8
1.E.2 Model 1750 ............................................... 10
1.E.3 Models 2000 / 2500 .................................. 12
1.F Unpacking ................................................. 14
1.G
Locating the Unit ....................................... 14
1.H Clearances ............................................... 14
SECTION 2 Venting and Combustion Air
2.A General Venting Info, Cat I and Cat III ...... 15
2.A.1 Vent and Air Pipe Sizing .......................... 15
2.A.2 Combustion Air ......................................... 15
2.A.2.a Combustion Air From Room ..................... 15
2.A.2.b Ducted Combustion Air ............................. 16
2.B Category I Venting .................................... 17
2.B.1 Category I Vent ......................................... 17
2.B.2 Common Venting Systems ....................... 17
2.B.3 Common Vent Test — Boilers ................... 18
2.C Category III Venting ................................. 19
2.C.1 Category III Vent ....................................... 19
2.C.2 Exhaust Vent Terminal ............................. 19
2.C.3 Vent and Air Pipe Material ........................ 19
2.C.4 Vent Adapters ........................................... 19
2.D Locating Vent & Comb Air Terminals ........ 20
2.D.1 Side Wall Vent Terminal
Category lll only ........................................ 20
2.D.2 Side-wall Combustion Air Terminal
Category l and lll ...................................... 20
2.D.3 Vertical Vent Terminal
Category l and lll ....................................... 20
2.D.4 Vertical Combustion Air Terminal
Category l and lll ....................................... 20
2.E Outdoor Installation .................................. 23
2.F Installations in the
Commonwealth of Massachusetts ............ 23
SECTION 3 Gas supply and Piping
3.A Gas Supply and Piping ............................. 23
3.B Gas Pipe Sizing ........................................ 24
SECTION 4 Water Flow and Headloss Data
4.A General Water Flow Information ............... 24
4.B Boiler Water Flow & Headloss Data ......... 25
4.C Water Heater Flow and Headloss Data .... 25
4.D Recovery Data .......................................... 26
SECTION 5 Piping
5.A Boiler Water Piping ................................... 27
5.A.1 Boiler Water Connections ......................... 27
5.A.2 Cold Water Make-Up ................................ 27
5.A.3 Freeze Protection ..................................... 27
5.A.4 Suggested Boiler Piping Schematics ........ 28
5.B Water Heaters ........................................... 32
5.B.1 Water Quality ............................................ 32
5.B.2 Heater Water Connections ....................... 32
5.B.3 Cold Water Make-Up ................................ 32
5.B.4 Freeze Protection .................................... 32
5.B.5 Suggested Piping Schematics ................. 32
SECTION 6 Condensate Drain Trap
.............. 34
SECTION 7 Electrical Connections
7.A Installation Warnings ................................ 34
7.B Main Power Connections .......................... 35
7.C Main Power Data ...................................... 35
7.D Control Panel Layout ................................ 36
7.E Field Connections ..................................... 36
7.E.1 Power ....................................................... 37
7.E.2
Boiler Pump .............................................. 37
7.E.3 Dry Contacts ............................................. 37
7.E.4 Alarm Bell ................................................. 37
7.E.5 Sensors .................................................... 37
7.E.6
Heat Demands .......................................... 38
7.E.7 Spare Inputs ............................................. 38
7.E.8 Inputs, BMS ............................................. 38
7.E.9 Outputs, Pump .......................................... 38
7.E.10 Dry Contacts (Run & Alarm) ..................... 38
7.E.11 RS 485 for Cascade (Lead Lag) ............. 38
7.E.12 RS485 BMS .............................................. 38
7.F Modbus/BACnet Memory Map ................. 40
7.G Wiring Diagrams - High Voltage .............. 46
7.H Logic Diagrams ......................................... 49
SECTION 8 Control Operation
8.A The Home Screen .................................... 54
8.A.1 Home Screen Active Icons ....................... 54
8.A.2 Keypad Operations ................................... 55
8.B Login to Lock / Unlock the Disp Screen .... 56
8.C Quick Start .............................................. 57
8.C.1 CH (Central Heat) .................................... 57
8.C.1.a CH1 (Central Heat, One) 1 ...................... 58
8.C.1.b CH2 (Central Heat, Two) 2 ..................... 58
8.C.2
DHW (Domestic Hot Water) .................... 58
8.C.3 Outdoor Reset ......................................... 59
8.C.4 Warm Weather Shut Down ..................... 59