Table of Contents
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CONTENTS
SPECIFICATIONS .............................................4
INTRODUCTION ..........................................5
SAFETY GUIDELINES.....................................6
SAFETY DEFINITION ....................................6
GENERAL ......................................................6
INSTALLATION ................................................7
GENERAL ......................................................7
CLEARANCES ...............................................9
INCLUDED ACCESSORIES ............................9
OPTIONAL ITEMS ........................................9
WARNING FOR INSTALLATIONS ...............11
HIGH-ALTITUDE INSTALLATIONS .............12
VENTING INSTRUCTIONS .........................13
General .....................................................13
Combustion Air Supply .............................15
Exhaust venting ........................................19
Venting illustrations ..................................20
Vent termination clearances ....................21
Clearances for sidewall terminations .......22
Clearances for rooftop terminations ........23
GAS SUPPLY AND GAS PIPE SIZING .........24
General .....................................................24
Gas connections .......................................24
Natural gas supply piping .........................25
Propane (LP) supply piping .......................25
WATER CONNECTIONS .............................26
Pressure relief valve .................................26
ELECTRICAL CONNECTIONS .....................27
TEMPERATURE REMOTE CONTROLLER .....27
Installation ................................................27
PUMP CONTROL CONNECTIONS .................28
EASY-LINK SYSTEM .........................................29
General .....................................................29
Easy link connection procedures ..............29
APPLICATIONS ..............................................31
SPACE HEATING APPLICATIONS ...............31
RECIRCULATION ........................................31
DUAL-PURPOSE HOT WATER HEATING ......32
INITIAL OPERATION .....................................33
OPERATING SAFETY .....................................35
NORMAL OPERATION ..................................37
GENERAL ....................................................37
TEMPERATURE SETTINGS ........................37
CONTROLLERS ...........................................39
TEMPERATURE SETTINGS ON THE PCB ........41
FLOW .......................................................... 41
FREEZE PROTECTION SYSTEM ................. 42
MAINTENANCE AND SERVICE ................. 42
Measuring inlet gas pressure ...................43
UNIT DRAINING AND FILTER CLEANING ....... 43
TROUBLESHOOTING ...................................44
GENERAL ....................................................44
ERROR CODES ...........................................46
General .....................................................46
Single unit installations. ............................46
Easy-Link System for 510 model only .......46
Fault analysis of error codes .....................47
COMPONENTS DIAGRAM ............................49
PARTS LIST ....................................................53
OUTPUT TEMPERATURE CHART ..................56
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