Instruction manual

2
ELECTRICAL CONNECTIONS ....................................... 23
W
IRING HARNESS ................................................... 23
115 V
OLT LINE CONNECTIONS ....................................... 23
JUNCTION BOX RELOCATION .......................................... 24
24 VOLT THERMOSTAT WIRING ...................................... 24
SINGLE-STAGE HEATING THERMOSTAT APPLICATION ...................... 24
F
OSSIL FUEL A PPLICATIONS ........................................... 25
GAS SUPPLY AND PIPING ............................................ 25
H
IGH ALTITUDE DERATE ............................................. 25
PROPANE GAS CONVERSION .......................................... 25
GAS PIPING CONNECTIONS ........................................... 26
PROPANE GAS TANKS AND PIPING .................................... 28
CIRCULATING AIR & FILTERS ....................................... 29
D
UCT WORK - AIR FLOW ............................................ 29
C
HECKING DUCT STATIC ............................................. 29
BOTTOM RETURN AIR OPENING [UPFLOW MODELS] .................... 30
FILTERS - READ THIS SECTION BEFORE
INSTALLING THE RETURN AIR DUCT WORK .......................... 30
UPRIGHT INSTALLATIONS ............................................. 31
HORIZONTAL INSTALLATIONS .......................................... 32
STARTUP PROCEDURE & ADJUSTMENT .......................... 32
D
RAIN TRAP PRIMING ............................................... 32
FURNACE OPERATION ............................................... 32
GAS SUPPLY PRESSURE MEASUREMENT ................................ 32
GAS MANIFOLD PRESSURE MEASUREMENT
AND
ADJUSTMENT ................................................ 33
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ............... 34
TEMPERATURE RISE ................................................. 34
CIRCULATOR BLOWER SPEEDS ........................................ 35
BLOWER HEAT OFF DELAY TIMINGS .................................. 35
NORMAL SEQUENCE OF OPERATION............................. 35
P
OWER UP ........................................................ 35
HEATING MODE .................................................... 35
COOLING MODE .................................................... 36
FAN ONLY MODE .................................................. 36
OPERATIONAL CHECKS ............................................. 36
SAFETY CIRCUIT DESCRIPTION .................................... 36
I
NTEGRATED CONTROL MODULE ...................................... 36
P
RIMARY LIMIT ..................................................... 37
AUXILIARY LIMIT .................................................... 37
ROLLOUT LIMIT .................................................... 37
PRESSURE SWITCHES ................................................ 37
F
LAME SENSOR ..................................................... 37
TROUBLESHOOTING................................................ 37
E
LECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....................... 37
DIAGNOSTIC CHART ................................................. 37
RESETTING FROM LOCKOUT .......................................... 38
MAINTENANCE....................................................... 38
A
NNUAL INSPECTION ................................................. 38
F
ILTERS ........................................................... 38
B
URNERS .......................................................... 39
INDUCED DRAFT AND CIRCULATOR BLOWERS ........................... 39
CONDENSATE TRAP AND DRAIN SYSTEM
(QUALIFIED SERVICER ONLY) ..................................... 39
FLAME SENSOR (QUALIFIED SERVICER ONLY) .......................... 39
FLUE PASSAGES (QUALIFIED SERVICER ONLY) ......................... 39
BEFORE LEAVING AN INSTALLATION .............................. 39
REPAIR AND REPLACEMENT PARTS ............................... 40
TROUBLESHOOTING CHART....................................... 41
AIRFLOW *MSS92*** & *CSS92***A* ............................... 43
AIRFLOW *MSS96*** & *CSS96***A* ................................ 44
WIRING DIAGRAM ................................................... 46
SPECIAL INSTRUCTIONS FOR PRODUCTS INSTALLED
IN THE STATE OF MASSACHUSETTS ........................ 47