2
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
,/',ͳ>d/dh/E^d>>d/KE^
.............12
VENTING INSTRUCTIONS .........................13
General .....................................................13
Combustion air supply ..............................14
Exhaust vent (ABS,PVC,CPVC, or
polypropylene vent) .................................18
DIP switch settings for vent length
(ABS,PVC,CPVC, or polypropylene vent) ...19
Exhaust vent (Stainless steel vent) ...........22
DIP switch settings for vent length
(Stainless steel vent) .................................22
Common venting system ..........................24
Vent termination clearances ....................26
Clearances for sidewall terminations .......27
Clearances for rooftop terminations ........28
GAS SUPPLY AND GAS PIPE SIZING .........29
General .....................................................29
Gas connections .......................................29
Natural Gas supply piping .........................30
Propane (LP) supply piping .......................30
WATER CONNECTIONS .............................31
Pressure relief valve .................................31
CONDENSATE DRAIN ................................32
Condensate drain connections .................32
ELECTRICAL CONNECTIONS .....................34
TEMPERATURE REMOTE CONTROLLER .....35
Included accessories .................................35
Installation ................................................35
^zͳ>/E<^z^dD
.........................................37
Easy link connection procedures ..............37
Dh>d/ͳhE/d^z^dD
......................................39
APPLICATIONS
..............................................40
Space heating applications .........................40
Recirculation ...............................................40
Dual-purpose hot water heating ...................41
INITIAL OPERATION
.....................................42
Owner's Guide
OPERATING SAFETY
.....................................44
NORMAL OPERATION
..................................46
h/>dͳ/EKEdZK>>Z
AND REMOTE CONTROLLER ..................46
GENERAL ....................................................46
OUTLET WATER TEMPERATURE
SETTING .....................................................47
TEMPERATURE TABLE OF CONTROLLER .47
ADDITIONAL FEATURES ............................48
Information mode ....................................48
Unit conversion mode ..............................48
TEMPERATURE SETTINGS ON THE PCB ........49
FLOW .......................................................... 49
FREEZE PROTECTION SYSTEM ................. 50
MAINTENANCE AND SERVICE ................. 51
Measuring inlet gas pressure ...................51
UNIT DRAINING AND FILTER CLEANING ....... 51
TROUBLESHOOTING
.....................................52
GENERAL ....................................................52
ERROR CODES ...........................................53
General .......................................................53
Single unit installation ..............................54
Easy-Link System .......................................54
Fault analysis error code ..........................55
COMPONENTS DIAGRAM
............................57
PARTS LIST
....................................................61
OUTPUT TEMPERATURE CHART
..................64
Printed on 12/6/2017 8:34 AM CT
