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Page
Contents
CONTENTS
Installation Manual
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
Vent length and no. of elbows .................14
DIP switch settings for vent length ...........14
Venting illustrations ..................................15
Vent termination clearances ....................16
Clearances for sidewall terminations .......17
Clearances for rooftop terminations ........17
GAS SUPPLY AND GAS PIPE SIZING .........18
General .....................................................18
Gas connections .......................................18
Natural gas supply piping .........................19
Propane (LP) supply piping .......................19
WATER CONNECTIONS .............................20
Pressure relief valve .................................20
ELECTRICAL CONNECTIONS .....................21
TEMPERATURE REMOTE CONTROLLER .....22
Optional item ............................................22
Installation ................................................22
EASY-LINK SYSTEM
.........................................24
Easy link connection procedures ..............24
MULTI-UNIT SYSTEM
......................................26
APPLICATIONS
..............................................27
Space-Heating Applications ........................27
Recirculation ...............................................27
Dual-purpose hot water heating ...................28
INITIAL OPERATION
.....................................29
Owner's Guide
OPERATING SAFETY
.....................................31
NORMAL OPERATION
..................................33
BUILT-IN CONTROLLER
AND REMOTE CONTROLLER ..................33
GENERAL ....................................................33
TEMPERATURE SETTING ..........................34
Set temperature .......................................34
TEMPERATURE TABLE OF CONTROLLER .34
ADDITIONAL FEATURES ............................35
Information mode ....................................35
Unit conversion mode ..............................35
TEMPERATURE SETTINGS ON THE PCB ........36
FLOW .......................................................... 36
FREEZE PROTECTION SYSTEM .................37
MAINTENANCE AND SERVICE .................37
Measuring inlet gas pressure ...................38
UNIT DRAINING AND FILTER CLEANING .......38
TROUBLESHOOTING
.....................................39
GENERAL ....................................................39
ERROR CODES ...........................................41
General .....................................................41
Single unit installation ..............................41
Easy-Link System .......................................41
Fault Analysis of Error Codes ....................42
COMPONENTS DIAGRAM
............................44
PARTS LIST
....................................................48
OUTPUT TEMPERATURE CHART
..................50
