2 Page
Contents
CONTENTS
Installation Manual
SPECIFICATIONS .............................................4
INTRODUCTION ..........................................5
SAFETY GUIDELINES.....................................6
SAFETY DEFINITION ....................................6
GENERAL ......................................................6
INCORPORATED RECIRCULATION PUMP ....... 7
INSTALLATION ................................................7
GENERAL ......................................................7
CLEARANCES ...............................................9
INCLUDED ACCESSORIES ............................9
OPTIONAL ITEMS ........................................ 9
WARNING FOR INSTALLATIONS ...............11
.............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) ...........23
DIP switch settings for vent length
(Stainless steel vent) .................................23
Common venting system ..........................26
Vent termination clearances ....................28
Clearances for sidewall terminations .......29
Clearances for rooftop terminations ........30
GAS SUPPLY AND GAS PIPE SIZING .........31
General .....................................................31
Gas connections .......................................31
Natural Gas supply piping .........................32
Propane (LP) supply piping ....................... 32
WATER CONNECTIONS .............................33
Installation w/ dedicated return line ........33
Installation w/o dedicated return line ...... 34
Pressure relief valve .................................34
CONDENSATE DRAIN ................................35
Condensate drain connections .................35
ELECTRICAL CONNECTIONS .....................37
TEMPERATURE REMOTE CONTROLLER .....38
Included accessories .................................38
Installation ................................................38
.........................................40
Easy link connection procedures ..............40
APPLICATIONS ..............................................42
Combination potable water heating
and space heating ......................................42
Recirculation ...............................................42
Dual-purpose hot water heating ................... 43
INITIAL OPERATION .....................................44
Initial test run ...........................................44
Owner's Guide
OPERATING SAFETY .....................................48
NORMAL OPERATION ..................................50
AND REMOTE CONTROLLER ..................50
GENERAL ....................................................50
OUTLET WATER TEMPERATURE
SETTING ..................................................... 51
TEMPERATURE TABLE OF CONTROLLER .51
SETTING THE TIME ...................................52
PUMP OPERATION TIMERS ......................52
Setting pump timers .................................53
Selecting a pump timer ............................55
Display example ........................................56
Manual pump activation ..........................57
Manual pump operation ..........................57
ADDITIONAL FEATURES ...................... ......59
Information mode ....................................59
Unit conversion mode ..............................59
TEMPERATURE SETTINGS ON THE PCB ........60
FLOW .......................................................... 60
FREEZE PROTECTION SYSTEM ................. 61
MAINTENANCE AND SERVICE ................. 62
Measuring inlet gas pressure ...................62
UNIT DRAINING AND FILTER CLEANING .......63
TROUBLESHOOTING .....................................64
GENERAL ....................................................64
ERROR CODES ...........................................66
COMPONENTS DIAGRAM ............................70
PARTS LIST .................................................... 74
OUTPUT TEMPERATURE CHART ..................76
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