3
Table of Contents
S
TART
-
UP
P
ROCEDURE
A
ND
A
DJUSTMENT
................................................................................................................................... 24
H
EAT
A
NTICIPATOR
S
ETTING
............................................................................................................................................... 24
F
URNACE
O
PERATION
....................................................................................................................................................... 24
G
AS
S
UPPLY
P
RESSURE
M
EASUREMENT
.............................................................................................................................. 25
G
AS
M
ANIFOLD
P
RESSURE
M
EASUREMENT
AND
A
DJUSTMENT
.................................................................................................. 26
G
AS
I
NPUT
R
ATE
M
EASUREMENT
(N
ATURAL
G
AS
O
NLY
) ........................................................................................................... 27
T
EMPERATURE
R
ISE
......................................................................................................................................................... 27
C
IRCULATOR
B
LOWER
S
PEEDS
.......................................................................................................................................... 28
B
LOWER
H
EAT
O
FF
D
ELAY
T
IMINGS
.................................................................................................................................... 30
C
OMFORT
N
ET
™ S
YSTEM
.......................................................................................................................................................... 30
O
VERVIEW
..................................................................................................................................................................... 30
F
OSSIL
F
UEL
A
PPLICATIONS
.............................................................................................................................................. 31
CTK0* W
IRING
............................................................................................................................................................. 31
C
OMFORT
N
ET
™ C
OMPATIBLE
F
URNACE
WITH
N
ON
-C
OMFORT
N
ET
COMPATIBLE
S
INGLE
-S
TAGE
A
IR
C
ONDITIONER
.............................. 32
C
OMFORT
N
ET
™ S
YSTEM
A
DVANCED
F
EATURES
............................................................................................................................. 32
T
HERMOSTAT
M
ENU
......................................................................................................................................................... 32
D
IAGNOSTICS
.................................................................................................................................................................. 32
F
URNACE
A
DVANCED
F
EATURES
M
ENUS
(A
CCESSED
THROUGH
C
OMMUNICATING
T
HERMOSTAT
) ..................................................... 33
N
ETWORK
TROUBLESHOOTING
........................................................................................................................................... 34
S
YSTEM
T
ROUBLESHOOTING
.............................................................................................................................................. 34
N
ORMAL
S
EQUENCE
OF
O
PERATION
............................................................................................................................................ 34
P
OWER
U
P
.................................................................................................................................................................... 34
H
EATING
M
ODE
............................................................................................................................................................... 35
C
OOLING
M
ODE
............................................................................................................................................................. 36
F
AN
O
NLY
M
ODE
............................................................................................................................................................ 36
O
PERATIONAL
C
HECKS
............................................................................................................................................................. 36
S
AFETY
C
IRCUIT
D
ESCRIPTION
................................................................................................................................................... 37
I
NTEGRATED
C
ONTROL
M
ODULE
......................................................................................................................................... 37
P
RIMARY
L
IMIT
................................................................................................................................................................ 37
A
UXILIARY
L
IMIT
............................................................................................................................................................. 37
R
OLLOUT
L
IMIT
.............................................................................................................................................................. 37
P
RESSURE
S
WITCHES
...................................................................................................................................................... 37
F
LAME
S
ENSOR
.............................................................................................................................................................. 37
T
ROUBLESHOOTING
................................................................................................................................................................. 37
E
LECTROSTATIC
D
ISCHARGE
(ESD) P
RECAUTIONS
................................................................................................................. 37
D
IAGNOSTIC
C
HART
......................................................................................................................................................... 37
F
AULT
R
ECALL
................................................................................................................................................................ 37
R
ESETTING
F
ROM
L
OCKOUT
.............................................................................................................................................. 38
M
AINTENANCE
......................................................................................................................................................................... 38
A
NNUAL
I
NSPECTION
........................................................................................................................................................ 38
F
ILTERS
........................................................................................................................................................................ 38
B
URNERS
...................................................................................................................................................................... 38
I
NDUCED
D
RAFT
AND
C
IRCULATOR
B
LOWERS
....................................................................................................................... 39
F
LAME
S
ENSOR
(Q
UALIFIED
S
ERVICER
O
NLY
) ...................................................................................................................... 39
F
LUE
P
ASSAGES
(Q
UALIFIED
S
ERVICER
O
NLY
) ..................................................................................................................... 39
B
EFORE
L
EAVING
AN
I
NSTALLATION
.............................................................................................................................................. 39
R
EPAIR
AND
R
EPLACEMENT
P
ARTS
.............................................................................................................................................. 39
T
ROUBLESHOOTING
C
HART
....................................................................................................................................................... 40
S
TATUS
C
ODES
....................................................................................................................................................................... 45
A
IR
F
LOW
D
ATA
...................................................................................................................................................................... 46
D
IP
S
WITCHES
....................................................................................................................................................................... 47
*MVC8, *DVC8 W
IRING
D
IAGRAM
........................................................................................................................................... 48
