1
Servicing should only be performed by a Qualied Service Technician
Table of conTenTS
INTRODUCTION ......................................................................2
QUAlIfICATIONS .....................................................................2
TOOlS REQUIRED....................................................................3
INSTAllATION CONSIDERATIONS.......................................................4
GAS AND ElECTRICAl CHARACTERISTICS...............................................4
GAS PRESSURE – REQUIREMENTS .....................................................4
fEATURES AND COMPONENTS.........................................................8
BlOWER AND BURNER ASSEMBlY......................................................9
SPARk IGNITER, flAME SENSOR, SIGHT GlASS .........................................11
VENTING ...........................................................................12
VENTING TABlES – TECHNICAl VENTING DATA ..........................................14
OPERATION AND SERVICE............................................................15
SEQUENCE Of OPERATION – flOW CHART .............................................16
lIGHTING AND OPERATING lABEl .....................................................17
TROUBlESHOOTING.................................................................18
CONTROlS OVERVIEW - CONTROl BOX ASSEMBlY ......................................19
PRESSURE SWITCHES – All MODElS..................................................19
HIGH lIMIT SWITCH/ DIGITAl THERMOSTAT .............................................20
CONTINUITY CHECk Of HIGH lIMIT (ECO)...............................................22
UPPER TEMPERATURE PROBE CONTINUITY CHECk......................................23
lOWER TEMPERATURE PROBE CONTINUITY CHECk .....................................24
IGNITION CONTROl..................................................................25
START UP/ flAME RECOVERY/ SAfETY lOCkOUT........................................26
UGB – BlOWER SPEED CONTROl .....................................................28
WIRING DIAGRAM ...................................................................29