Table Of Contents; Hazard Definitions - Lochinvar 502-2072 Installation & Operation Manual

HAZARD DEFINITIONS ................................................... 2
PLEASE READ BEFORE PROCEEDING ...................... 3
SAFETY INFORMATION ................................................. 4
THE COPPER-FIN -- HOW IT WORKS ..................... 5-7
2
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 .............................................................. 26-32
Outdoor Installation .......................................................... 33
3. GAS CONNECTIONS
Connecting to Gas Supply ............................................... 34
Gas Pressure Test ........................................................... 34
Checking Manifold Gas Pressure .................................... 34
Gas Piping ........................................................................ 34
Gas Connection .......................................................... 34-35
Combination Gas Valves ................................................... 35
Checking Gas Supply Pressure ....................................... 36

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 indicates an imminently hazardous situation which, if not avoided, will result in death or serious
DANGER
⚠
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
WARNING
⚠
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
CAUTION
⚠
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
CAUTION
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
NOTICE
related to personal injury or property damage.
2
Contents
4. WATER CONNECTIONS
Circulating Pump .............................................................. 37
Minimum Pump Performance ........................................... 38
Heat Exchanger ............................................................... 38
Auxiliary Mixed Water Limit Control ................................. 38
Piping Diagrams .......................................................... 39-41
Pumped Automatic Bypass .............................................. 42
Outdoor Operation: 3-Way Valve Cover ......................... 42
Automatic Bypass Valve Cover Installation ..................... 42
Manual Operation of the 3-Way Automatic Bypass ......... 42
Relief Valve ...................................................................... 43
Automatic Chlorinator and Chemical Feeders ................. 43
Water Flow Switch ............................................................ 43
Pump Purge Delay ........................................................... 43
Service Indicator Option ................................................... 43
5. ELECTRICAL CONNECTIONS
General Information ......................................................... 44
3-Way Automatic Bypass Valve Wiring .......................... 44
Pool Heater Operating Control Module ....................... 45-47
Wiring of the Cascade ...................................................... 47
6. STARTUP
Pre-Start Checklist ........................................................... 48
Starting the Filter System ................................................. 48
Check for Gas Leaks ....................................................... 48
Check/Control Water Chemistry ....................................... 48
Freeze Protection ........................................................ 48-49
Check Thermostat Circuit(s) ............................................ 49
Placing the Pool Heater in Operation ..........................49-51
7. OPERATING INFORMATION
General ............................................................................. 52
How the Control Module Operates .............................. 52-54
Sequence of Operation .................................................... 55
Copper-fin Control Module ......................................... 56-57
2
Status Display Screens ............................................... 58-59
8. MAINTENANCE ..................................................... 60-64
9. CONNECTION DIAGRAM ...................................... 65-66
10. LADDER DIAGRAM .............................................. 67-68
Revision Notes .................................................. Back Cover