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
Vent termination clearances ....................14
Clearances for sidewall terminations .......15
Clearances for rooftop terminations ........16
Combustion air supply ..............................17
polypropylene vent) .................................21
Exhaust vent (Stainless steel vent) ...........25
(Stainless steel vent) .................................26
Common venting system ..........................28
GAS SUPPLY AND GAS PIPE SIZING .........30
General .....................................................30
Gas connections .......................................30
Natural Gas supply piping .........................31
Propane (LP) supply piping .......................31
WATER CONNECTIONS .............................32
Pressure relief valve .................................32
CONDENSATE DRAIN ................................33
ELECTRICAL CONNECTIONS .....................35
TEMPERATURE REMOTE CONTROLLER .....36
Included accessories .................................36
Installation ................................................36
EASY-LINK SYSTEM .........................................38
Easy link connection procedures ..............38
MULTI-UNIT SYSTEM ......................................40
APPLICATIONS ..............................................41
Recirculation ...............................................41
Domestic and space heating ......................42
Dual-purpose hot water heating ...................44
INITIAL OPERATION .....................................45
OPERATING SAFETY .....................................47
NORMAL OPERATION ..................................49
AND REMOTE CONTROLLER ..................49
GENERAL ....................................................49
SETTING .....................................................50
ADDITIONAL FEATURES ............................51
Information mode ....................................51
Unit conversion mode ..............................51
TEMPERATURE SETTINGS ON THE PCB ........52
FLOW .......................................................... 52
FREEZE PROTECTION SYSTEM ................. 53
MAINTENANCE AND SERVICE .................. 54
INLET WATER FILTER CLEANING ................... 54
PROTECTION) .............................................. 55
MEASURING INLET GAS PRESSURE.................. 56
TROUBLESHOOTING .....................................57
ERROR CODES ...........................................58
Single unit installation ..............................59
Easy-Link System .......................................59
Fault analysis error code ..........................60
COMPONENTS DIAGRAM ............................62
PARTS LIST ....................................................70
OUTPUT TEMPERATURE CHART ..................74
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