Lochinvar 497 - 2067 service manual Hazard definitions, Notice, Contents, Danger

Contents

HAZARD DEFINITIONS	2
PLEASE READ BEFORE PROCEEDING	3-4
SAFETY INFORMATION	4
THE COPPER-FIN -- HOW IT WORKS	5-7
RATINGS	8-9
1. DETERMINE UNIT LOCATION
Locating the Unit	10
Indoor Clearances from Combustible Construction	10
Freeze Protection	11-12
Prevent Combustion Air Contamination	11-13
Combustion Air Options	14-15
2. VENTING
General Venting Information	16-17
Vent System Options
Conventional Negative Draft Venting	18-19
Masonry Chimney Installation and Inspection	19
Outdoor Installation Options	20-21
3. GAS CONNECTIONS
Connecting to Gas Supply	22
Gas Pressure Test	22
Gas Piping	22
Gas Connections / Gas Train and Controls	23
Combination Gas Valves	24
Checking Gas Supply Pressure	24-25
Gas Manifold Pressure Adjustment	25-26
4. WATER CONNECTIONS
Inlet & Outlet Connections	27
Relief Valve	27
Heating Boiler Installations	27-29
Low Temperature Return Water Systems	30
Primary/Secondary Piping of a Single Boiler	31
Primary/Secondary Piping of Multiple Boilers	32
Boiler w/Low Temperature Bypass Piping	33
Primary/Secondary Piping with Buffer Tank	34
Installation with a Chilled Water System	35
Typical Heating Boiler Installations	35
Boiler Flow Rate / Bypass Requirements	35-36
Temperature/Pressure Gauge and Water Treatment	36
5. ELECTRICAL CONNECTIONS
Connecting to Electrical Supply	37
EMS Connections	38

Terminal Strip Connection Options		38
Temperature Controls
Temperature Adjustment		39
Outdoor Reset Option		40
Temperature Control Sensors		41-42
Hot Surface Ignition System		42-43
Operation and Diagnostic Lights		44
6. STARTUP
Operating and Safety Instructions		45
Check Water Chemistry		46
Freeze Protection (when used)		46
Fill and Test Water System		46
Purge Air from Water System		46
Check for Gas Leaks / Thermostat Circuit(s)		47
Check Vent and Air Piping		47
Placing the Boiler in Operation		47
7. DOMESTIC WATER HEATERS
General		48
Water Velocity Control		48
Pipe Size Requirements
Typical Water Heater Piping w/ Storage Tank		49
Single Water Heater Piping w/Two Storage Tanks ...		50
Multiple Water Heater Piping w/One Storage Tank		... 51
Multiple Water Heater Piping w/Multi. Storage Tanks. 52
Water Chemistry		53
Circulating Pump/ Performance		53
Heat Exchanger		54
Potable Hot Water Temperature Controls		54
Location of Cold Water Supply Piping Connections		55
High Water Temperature Limit Control		56
Optional Relief Valve		56
Thermal Expansion and Cathodic Protection		56
8. MAINTENANCE
Burner Flames		57
Burner Removal and Cleaning Procedures		57-58
Adjusting Differential Air Pressure		58-59
Servicing a Hot Surface Igniter / Ignition Module		60
Sequence of Operation Overview		60-61
9. GLOSSARY		62-63
10. DIAGRAMS		64-67
Revision Notes	Back Cover

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

DANGER

WARNING

CAUTION

CAUTION

NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

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