Table Of Contents

Warranty	1
Safety Warnings	3
Codes	3
Installation Requirements	4
Location	4
Clearances	4
Combustion/Ventilation Air Requirements	5
Construction Air Filter	7
Venting Systems	8
Category IV Venting	9
Flue Pipe Materials	9
Installation Guidelines	9
Vent Length Requirements	10
Drain Tee Installation	10
Vertical Terminations	11
Sidewall Terminations	12
Direct Vent Systems	13
Air Inlet Pipe Materials	14
Air Inlet Pipe Length Requirements	14
Vertical Direct Vent	15
Location Requirements	15
Multiple Direct Vent Installations	16
Horizontal Direct Vent	16
Location Requirements	16
Multiple Direct Vent Installations	18
Intelli-Vent Systems	18
Materials	18
Length Requirements	18
Vertical Flue - Sidewall Air	19
Sidewall Flue - Rooftop Air	20
Sidewall Flue - Sidewall Air	21
Gas Supply	23
Gas Pressures and Piping	23
Manifold Pressure	23
Supply Pressure Measurement	25
Manifold Pressure Measurement	26
Water Connections	27
Heat Exchangers	28
Integral Bypass	29
Valve and Pump	29
Synchronization	29
Set-up Maximum Flow	30
Bypass Operation	31
Minimum Water Temperatures	31
Flow Switch	32
Low Water Cut-Off	32
Gas Train	32
Relief Valve	33
Ratio Gas Valve	33
Diaphragm Gas Valve	33
Electrical Requirements	34
Jacket	34
Components and Controls	35
Variable Frequency Drive	36
Low Air Pressure Switch	37
Gas Pressure Switches	37
Excel 10 Boiler Interface Controller	37

Manual Override Control		39
Temperature Adjustment		39
Command Display		39
Password		40
Changeable Points		40
Data Points in Display		41
Status Points — Operation		43
Status Points — Alarm		44
Outdoor Reset Function		44
Multiple Appliance Installations		45
Sequencing Options		45
E-Bus Connection		46
Temperature Limit Control		48
Hot Surface Ignition Control		48
Hot Surface Igniter		49
Diagnostic Status LED		49
Operation/Diagnostic Lights and Switches		......50
Burner Assembly		51
Combustion Air Blower		52
Condensate Management System		53
Installation and Operation		53
Condensate Trap Installation	..............	54
Lighting Instructions		55
Sequence of Operation		57
Maintenance		58
Vent System		58
Flame Patterns		58
Burner Cleaning		59
Heat Exchanger Inspection		61
Lubrication		62
Combustion Air Measurements		62
Freeze Protection		63
Heating Boiler		64
Piping		64
Piping Length and Diameter		65
Integral Pump Limitations		65
Boiler Pump Operation		65
Primary/Secondary Piping		66
Minimum Water Temperatures		66
Three Way Valves		67
Boiler Flow Rates		67
Placing the Boiler in Operation		68
Boiler Temperature Control		69
Water Heater/Domestic Hot Water Supply Boiler		....70
Typical Piping		70
Set-up Maximum Flow		70
Temperature Rise		71
Water Chemistry		72
Piping Requirements		73
Pump Operation		74
Temperature Adjustment		75
Minimum Inlet Temperatures		75
Risk of Scald Warnings		76
Relief Valve		76
Ladder Diagram		77
Wiring Diagram		78
Revision Notes	Back Cover

Lochinvar 1, 000 through 2 Table Of Contents, Water Heater/Domestic Hot Water Supply Boiler