2
C
OUNTERFLOW
M
ODEL
I
NSTALLED
V
ERTICALLY
.................. 21
D
RAIN
E
XITING
L
EFT
S
IDE
.................................... 21
D
RAIN
E
XITING
R
IGHT
S
IDE
................................... 21
C
OUNTERFLOW
M
ODEL
I
NSTALLED
H
ORIZONTALLY
WITH
R
IGHT
S
IDE
D
OWN
............................... 22
C
OUNTERFLOW
M
ODEL
I
NSTALLED
H
ORIZONTALLY
WITH
L
EFT
S
IDE
D
OWN
................................ 22
ELECTRICAL CONNECTIONS ................................. 23
W
IRING
H
ARNESS
........................................... 23
115 V
OLT
L
INE
C
ONNECTIONS
............................... 23
J
UNCTION
B
OX
R
ELOCATION
.................................. 23
24 V
OLT
T
HERMOSTAT
W
IRING
............................... 24
S
INGLE
-S
TAGE
H
EATING
T
HERMOSTAT
A
PPLICATION
.............. 24
24 V
OLT
D
EHUMIDISTAT
W
IRING
.............................. 25
F
OSSIL
F
UEL
A
PPLICATIONS
................................... 25
115 V
OLT
L
INE
C
ONNECTION
OF
A
CCESSORIES
(H
UMIDIFIER
AND
E
LECTRONIC
A
IR
C
LEANER
) ............. 25
A
UXILIARY
A
LARM
S
WITCH
: ................................... 26
GAS SUPPLY AND PIPING ...................................... 26
H
IGH
A
LTITUDE
D
ERATE
...................................... 27
P
ROPANE
G
AS
C
ONVERSION
................................... 27
G
AS
P
IPING
C
ONNECTIONS
.................................... 27
P
ROPANE
G
AS
T
ANKS
AND
P
IPING
............................. 29
CIRCULATING AIR & FILTERS ................................ 30
D
UCT
WORK
- A
IR
F
LOW
.................................... 30
C
HECKING
D
UCT
S
TATIC
...................................... 30
B
OTTOM
R
ETURN
A
IR
O
PENING
[U
PFLOW
M
ODELS
] ............ 31
F
ILTERS
- R
EAD
T
HIS
S
ECTION
B
EFORE
I
NSTALLING
T
HE
R
ETURN
A
IR
D
UCT
WORK
.......................... 31
U
PRIGHT
I
NSTALLATIONS
...................................... 32
H
ORIZONTAL
I
NSTALLATIONS
................................... 32
STARTUP PROCEDURE & ADJUSTMENT ..................... 32
D
RAIN
T
RAP
P
RIMING
........................................ 33
F
URNACE
O
PERATION
........................................ 33
G
AS
S
UPPLY
P
RESSURE
M
EASUREMENT
......................... 33
G
AS
M
ANIFOLD
P
RESSURE
M
EASUREMENT
AND
A
DJUSTMENT
...... 35
G
AS
I
NPUT
R
ATE
M
EASUREMENT
(N
ATURAL
G
AS
O
NLY
) ......... 35
T
EMPERATURE
R
ISE
.......................................... 36
C
IRCULATOR
B
LOWER
S
PEEDS
................................. 36
B
LOWER
H
EAT
O
FF
D
ELAY
T
IMINGS
........................... 38
C
OMFORT
N
ET
™ S
YSTEM
..................................... 38
O
VERVIEW
................................................. 38
A
IRFLOW
C
ONSIDERATIONS
.................................... 39
F
OSSIL
F
UEL
A
PPLICATIONS
................................... 39
CTK0* WIRING ................................................. 39
C
OMFORT
N
ET
S
YSTEM
A
DVANCED
F
EATURES
.................... 40
F
URNACE
A
DVANCED
F
EATURES
M
ENUS
........................ 41
T
HERMOSTAT
M
ENU
......................................... 43
D
IAGNOSTICS
................................................ 43
N
ETWORK
TROUBLESHOOTING
................................. 43
S
YSTEM
T
ROUBLESHOOTING
................................... 43
NORMAL SEQUENCE OF OPERATION ........................ 43
P
OWER
U
P
................................................. 43
H
EATING
M
ODE
............................................. 43
C
OOLING
M
ODE
............................................ 45
F
AN
O
NLY
M
ODE
........................................... 45
OPERATIONAL CHECKS ....................................... 45
SAFETY CIRCUIT DESCRIPTION .............................. 45
I
NTEGRATED
C
ONTROL
M
ODULE
.............................. 45
P
RIMARY
L
IMIT
.............................................. 45
A
UXILIARY
L
IMIT
............................................. 45
R
OLLOUT
L
IMIT
............................................. 45
P
RESSURE
S
WITCHES
......................................... 46
F
LAME
S
ENSOR
............................................. 46
T
ROUBLESHOOTING
.......................................... 46
E
LECTROSTATIC
D
ISCHARGE
(ESD) P
RECAUTIONS
................ 46
D
IAGNOSTIC
C
HART
.......................................... 46
R
ESETTING
F
ROM
L
OCKOUT
.................................. 46
MAINTENANCE ................................................. 46
A
NNUAL
I
NSPECTION
......................................... 46
F
ILTERS
.................................................... 47
B
URNERS
................................................... 47
I
NDUCED
D
RAFT
AND
C
IRCULATOR
B
LOWERS
.................... 47
C
ONDENSATE
T
RAP
AND
D
RAIN
S
YSTEM
(Q
UALIFIED
S
ERVICER
O
NLY
) ........................... 47
F
LAME
S
ENSOR
(Q
UALIFIED
S
ERVICER
O
NLY
) .................. 47
F
LUE
P
ASSAGES
(Q
UALIFIED
S
ERVICER
O
NLY
) .................. 47
BEFORE LEAVING AN INSTALLATION ........................ 47
REPAIR AND REPLACEMENT PARTS .......................... 47
DIP SWITCHES ................................................. 48
STATUS CODES ................................................ 49
TROUBLESHOOTING CHART ............................. 50-54
WIRING DIAGRAM ............................................. 55
SPECIAL INSTRUCTIONS FOR PRODUCTS INSTALLED
IN THE STATE OF MASSACHUSETTS ........................ 56
O
NLY
PERSONNEL
THAT
HAVE
BEEN
TRAINED
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
(
HEREINAFTER
, “
SERVICE
”)
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
SHOULD
SERVICE
THE
EQUIPMENT
. T
HE
MANUFACTURER
WILL
NOT
BE
RESPONSIBLE
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
ARISING
FROM
IMPROPER
SERVICE
OR
SERVICE
PROCEDURES
. I
F
YOU
SERVICE
THIS
UNIT
,
YOU
ASSUME
RESPONSIBILITY
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
WHICH
MAY
RESULT
. I
N
ADDITION
,
IN
JURISDICTIONS
THAT
REQUIRE
ONE
OR
MORE
LICENSES
TO
SERVICE
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
ONLY
LICENSED
PERSONNEL
SHOULD
SERVICE
THE
EQUIPMENT
. I
MPROPER
INSTALLATION
,
ADJUSTMENT
,
SERVICING
OR
REPAIR
OF
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
OR
ATTEMPTING
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
WITHOUT
PROPER
TRAINING
MAY
RESULT
IN
PRODUCT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
