2
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE.................................3
APPROVALS .................................................................................3
GENERAL SAFETY INFORMATION .............................................4
Precautions
..............................................................................4
Grounding Instructions
.............................................................4
INSTALLATION REQUIREMENTS FOR MASSACHUSETTS .........7
INTRODUCTION ...........................................................................8
Abbreviations Used
..................................................................8
Qualifications
............................................................................8
Preparing For The Installation ..................................................8
DIMENSIONS AND CAPACITY DATA ...........................................9
Rough In Dimensions: All Models
.............................................9
FEATURES AND COMPONENTS ..............................................11
34 Gallon Unit .........................................................................11
50 Gallon Unit .........................................................................12
Controls And Switches
...........................................................14
INSTALLATION CONSIDERATIONS ..........................................15
Locating The Water Heater
....................................................15
Insulation Blankets .................................................................16
Combustion Air And Ventilation
..............................................16
Corrosion and Water Quality
..................................................16
INSTALLATION REQUIREMENTS .............................................17
Gas Supply Systems ..............................................................17
Supply Gas Regulator ............................................................17
Power Supply
.........................................................................17
Mixing Valves..........................................................................18
Circulation Pumps
..................................................................18
Dishwashing Machines
...........................................................18
Space Heating And Potable Water System
............................19
Storage Tank Installation ........................................................19
Solar Installation .....................................................................19
Closed Water Systems
...........................................................19
Thermal Expansion ................................................................19
Temperature-Pressure Relief Valve ........................................20
Condensate Drain
..................................................................21
VENTING INSTALLATION ..........................................................22
Vent Installation Considerations
.............................................22
General Venting Instructions
..................................................22
Approved Vent/Intake Material
...............................................22
Polypropylene Installations .....................................................23
Vent Pipe Termination.............................................................23
Planning The Vent System .....................................................23
Integrated Filter Installation
....................................................24
Direct Vent Air Intake Moisture Protection
..............................25
Horizontal Vent Terminal Installation ......................................25
Vertical Vent Terminal Installation
...........................................26
Termination Clearances Sidewall Direct Vent
.........................27
Direct Vent Installation Diagrams
...........................................28
Concentric Vent Installation
....................................................29
Venting Multiple Units .............................................................30
WATER HEATER INSTALLATION ...............................................31
Condensate Drain Installation
................................................31
Supply Gas Line Installation ...................................................31
Gas Line Leak Testing ............................................................32
Purging ...................................................................................32
Electrical Wiring
......................................................................33
Water Line Connections
.........................................................33
T&P Valve Discharge Pipe
.....................................................34
TEMPERATURE REGULATION .................................................35
High Temperature Limit Control (ECO)...................................35
Thermostat Control .................................................................35
CONTROL SYSTEM OPERATION .............................................36
Overview
................................................................................36
Control System Navigation .....................................................36
User Settings & Control System Menus .................................39
START UP ...................................................................................44
Start Up Conditions
................................................................44
Prior to Start Up ......................................................................44
Filling the Water Heater ..........................................................44
Initial Start Up .........................................................................45
LIGHTING THE WATER HEATER ..............................................46
Lighting & Operation Labels ...................................................46
Checking the Firing Rate
........................................................47
Gas Input Rate .......................................................................47
High Altitude Installations
.......................................................47
TROUBLESHOOTING ................................................................48
Installation Checklist
...............................................................48
Sequence Of Operation
..........................................................48
Sequence Of Operation Flow Chart
.......................................49
Operational Problems .............................................................50
Fault And Alert Conditions
......................................................51
LEAKAGE CHECKPOINTS .........................................................53
PERIODIC MAINTENANCE ........................................................54
Venting System Inspection
.....................................................54
Ingegrated Filter Preventative Maintenance
...........................54
Temperature-Pressure Relief Valve Test ................................54
Draining and Flushing
............................................................55
Service
...................................................................................55
DIAGRAMS .................................................................................56
CCB-Central Control Board Layout
........................................56
Wiring Diagram .......................................................................57
Circulation Pump Wiring Diagrams
........................................58
Piping Diagrams .....................................................................59
NOTES ........................................................................................61