Contents

HAZARD DEFINITIONS

2

PLEASE READ BEFORE PROCEEDING

3

SAFETY INFORMATION

4

THE COPPER-FIN2-- HOW IT WORKS

5-7

RATINGS

8

1. DETERMINE UNIT LOCATION

 

Location of Unit

9

Indoor Clearances from Combustible Construction

9

Non-Combustible / Combustible Flooring

9

Freeze Protection

9

Location

10

Hydronic Systems Anti-freeze

10

Outdoor Pool Heater Installation

10

Combustion and Ventilation Air

10

Combustion Options

10 - 12

2. VENTING

 

Before You Begin

13

Vent System Options

14

General Venting Information

15

Conventional Negative Draft Venting

16-18

Vertical DirectAire Venting

19-21

Sidewall Venting

22-24

Horizontal DirectAire Venting

25

Direct Venting

26-29

Outdoor Installation

30

3. GAS CONNECTIONS

 

Connecting to Gas Supply

31

Gas Pressure Test

31

Checking Manifold Gas Pressure

31

Gas Piping

31

Gas Connection

31-32

Combination Gas Valves

32

Checking Gas Supply Pressure

33

4. WATER CONNECTIONS

 

 

Circulating Pump

34

Minimum Pump Performance

35

Heat Exchanger

35

Auxiliary Mixed Water Limit Control

35

Piping Diagrams

36-38

Pumped Automatic Bypass

39

Outdoor Operation: 3-Way Valve Cover

39

Automatic Bypass Valve Cover Installation

39

Manual Operation of the 3-Way Automatic Bypass

......... 39

Relief Valve

40

Automatic Chlorinator and Chemical Feeders

40

Water Flow Switch

40

Pump Purge Delay

40

Service Indicator Option

40

5. ELECTRICAL CONNECTIONS

 

 

General Information

41

3-Way Automatic Bypass Valve Wiring

41

Pool Heater Operating Control Module

42-44

Wiring of the Cascade

44

6. STARTUP

 

 

Pre-Start Checklist

45

Starting the Filter System

45

Check for Gas Leaks

45

Check/Control Water Chemistry

45

Freeze Protection

45-46

Check Thermostat Circuit(s)

46

Placing the Pool Heater in Operation

46-48

7. OPERATING INFORMATION

 

 

General

49

How the Control Module Operates

49-51

Sequence of Operation

52

Copper-fin2Control Module

53-54

Status Display Screens

55-56

8. MAINTENANCE

57-61

9. CONNECTION DIAGRAM

62-63

10. LADDER DIAGRAM

64-65

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.

2

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Lochinvar 502, 2072 operation manual Contents

2072, 502 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.