Emerson 1F97-391 User Manual
Thermostat/Humidifier Control
Digital 7 Day Programmable
Comfort-Set
®
TM
90 Series
PREMIUM
1F97-391
Installation and
Operating Instructions
Retain for Future Use
Easy, Menu-Driven Set-Up
and Programming
1
5
2
4
3
6
7 8
9
10
11
12
Premium options
to customize the thermostat
to fit your application.
17
16
15
14
13
INTRODUCTION
Thank you for purchasing your
new Comfort-Set 90 thermostat
and humidifier control. WhiteRodgers has been producing
energy saving controls for over
60 years. We have been designing and producing the ComfortSet family of electronic programmable thermostats since
1982. Comfort-Set 90 is the
third generation of the electronic programmable family.
We believe you will find that
the Comfort-Set 90 is the most
user friendly and technologically advanced thermostat and
humidifier control available
today.
Introduction
Installation/Configuration
You will find information about
thermostat buttons and display
beginning on page 2.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation/Configuration . . . . . . . . . . . . . . .4
Manual Operation and Programming . . . .24
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Troubleshooting . . . . . . . . . . . . . . . . . . . . . .42
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Use the tabs at the bottom of the page to quickly
locate sections
1
Programming
Features
FAQs
Troubleshooting Index
INTRODUCTION
THE THE
THERMOSTTHERMOST
THE
THERMOST
THE THE
THERMOSTTHERMOST
See inside front cover for illustration
showing button locations.
1
(Blue arrow) Lowers temperature
setting (45°F or 7°C minimum)
2
(Red arrow) Raises temperature setting
(99°F or 37°C maximum)
3
The yellow indicator glows when the
system is operating.
4
This button (on top of the cover) lights
the display.
5
Used to initiate or review thermostat
programming.
6
Used with TIME
to set the clock.
AA
A
AA
T BT B
T B
T BT B
FWD
UTTUTT
UTT
UTTUTT
/TIME
ONSONS
ONS
ONSONS
BACK
7
Used to adjust the time backward, or to
select the previous menu item.
8
Used to adjust the time forward, or to
select the next menu item.
9
Used with TIME
to set the current day and with
enter VACATION mode.
10
Used to advance operation to the next
program period.
11
Used to manually override program-
ming to hold at a selected temperature.
12
Used to display humidity.
13
Selects fan operation (see The Display,
figure 1 21 ). This button is also used to
program the fan to run continuously during
a program period.
FWD
2
/TIME
HOLD
BACK
to
14
Used to set/reset the filter and
humidity maintenance timer.
15
Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover).
16
Used to adjust the clock one hour
forward or back.
17
Used to start or return to program
operation.
LARLAR
GE LIGHTED (LGE LIGHTED (L
LAR
GE LIGHTED (L
LARLAR
GE LIGHTED (LGE LIGHTED (L
CD) DISPLACD) DISPLA
CD) DISPLA
CD) DISPLACD) DISPLA
The thermostat display alternately shows
the current time and the current temperature on the left side. The display also
shows the temperature you have programmed or set on the right side of your
screen.
18
Displays system mode (
COOLCOOL
AA
UTUT
OO
A
AA
UT
UTUT
HOLDHOLD
O,
HOLD,
OO
HOLDHOLD
MOR,MOR,
MOR,
MOR,MOR,
COOL,
COOLCOOL
HUMDHUMD
HUMD). During programming displays the
HUMDHUMD
time period (
D D
D
D D
AA
A
AA
VV
V
VV
YY
,,
EVE, EVE,
Y
,
EVE,
YY
,,
EVE, EVE,
HEAHEA
HEA
HEAHEA
AA
CA CA
A
CA or
AA
CA CA
TT
OFFOFF
T,
OFF,
TT
OFFOFF
NHT NHT
NHT)
NHT NHT
being programmed. In the configuration
18 18
19 20 21
CHECK BATTERY
MON
2324
FAN AUTOHRS
F
AM
22
YY
Y
YY
menu, the menu item name is shown, one
PRPR
GMGM
word at a time (
COOLCOOL
FF
AN AN
COOL
F
AN
COOLCOOL
FF
AN AN
19
CHECK BCHECK B
CHECK B
CHECK BCHECK B
DELADELA
DELA
DELADELA
MODEMODE
PR
GM
MODE,
PRPR
GMGM
MODEMODE
OFFOFF
OFF, etc.).
OFFOFF
AA
TTERTTER
YY
A
TTER
Y appears when the
AA
TTERTTER
YY
“AA” alkaline batteries are weak and
BB
AA
should be replaced.
B
BB
TTERTTER
A
TTER
AA
TTERTTER
when the thermostat is running on battery
power only.
CHECK STCHECK ST
CHECK ST
CHECK STCHECK ST
AA
T T
A
T appears when
AA
T T
the thermostat detects certain problems
within itself.
CHECK SYCHECK SY
CHECK SY
CHECK SYCHECK SY
STEM STEM
STEM appears
STEM STEM
when the thermostat detects certain
problems in the heating or humidity
system.
CHECK BATTERY
MON WED THU FRI SAT SUNTUEWED THU FRI SAT SUNTUE
FAN AUTO
HRS
HEATHEAT
F
AM
EMREMR
EMR,
EMREMR
YY
Y appears
YY
25
20
Indicates the length of time remaining
in a temporary hold condition. Also
indicates the length of time remaining in
VACATION mode.
21
Displays
operating continuously. Displays
AA
UTUT
A
UT
AA
UTUT
FF
AN ONAN ON
F
AN ON when the fan is
FF
AN ONAN ON
OO
O when the fan cycles with the
OO
FF
ANAN
F
AN
FF
ANAN
heating or cooling system.
22
Displays the setpoint temperature. In
HUMD mode, shows humidity setpoint.
23
Alternately displays room temperature
and time of day. In HUMD mode, shows
actual humidity.
24
Shows the current day of the week.
When programming, shows the day(s)
being programmed.
25
The word
HEAHEA
HEA
HEAHEA
TT
COOLCOOL
T or
COOL will appear
TT
COOLCOOL
above or below the setpoint if area 18 is
needed to display other information.
Introduction
Figure 1. The Display
3
INST ALLATION AND CONFIGURATION
This White-Rodgers Automatic
Setback Digital Thermostat uses
microcomputer technology to provide
precise time, temperature and humidity
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
Model 1F97-391 Model 1F97-391
Model 1F97-391 7 Day Programming
Model 1F97-391 Model 1F97-391
ELECTRICAL DELECTRICAL D
ELECTRICAL D
ELECTRICAL DELECTRICAL D
Electrical Rating:
17 to 30 VAC, 50/60 Hz
0.05 to 1.5 Amps
1.5 Amps Maximum T otal Load
(All terminals combined)
AA
TT
AA
A
T
A
AA
TT
AA
control. This thermostat offers the
flexibility to design heating and
cooling programs that fit personal
needs. This thermostat is adaptable to
Standard Systems:
Fuel: Gas, Oil, Electric
Type: Heating/Cooling, Heat Only,
Hot Water or Steam Systems, Cool
Only
most 24 Volt residential forced air,
hydronic (hot water or steam), electric
heat systems.
THERMAL DTHERMAL D
THERMAL D
THERMAL DTHERMAL D
Setpoint Temperature Range:
45° to 99°F (7° to 37°C)
Setpoint Humidity Range:
10% to 45%
Operating Ambient Temperature:
32° to 110°F (0° to 43°C)
Operating Humidity Range:
90% non-condensing max.
Shipping Temperature Range:
-4° to 131°F (-20° to 55°C)
4
AA
TT
AA
A
T
A
AA
TT
AA
WARNING
!
Do not shorDo not shor
Do not shor
Do not shorDo not shor
gg
as vas v
g
as v
gg
as vas v
test.test.
test.
test.test.
will damawill dama
will dama
will damawill dama
could cause percould cause per
could cause per
could cause percould cause per
or pror pr
or pr
or pror pr
Do not use on cirDo not use on cir
Do not use on cir
Do not use on cirDo not use on cir
specified vspecified v
specified v
specified vspecified v
vv
oltaolta
v
olta
vv
oltaolta
could cause shoccould cause shoc
could cause shoc
could cause shoccould cause shoc
hazard.hazard.
hazard.
hazard.hazard.
TT
herher
T
her
TT
herher
and all components of theand all components of the
and all components of the
and all components of theand all components of the
system shall confsystem shall conf
system shall conf
system shall confsystem shall conf
circir
cuits per the NEC codecuits per the NEC code
cir
cuits per the NEC code
circir
cuits per the NEC codecuits per the NEC code
Do not wire HM1 or HM2 fromDo not wire HM1 or HM2 from
Do not wire HM1 or HM2 from
Do not wire HM1 or HM2 fromDo not wire HM1 or HM2 from
therther
ther
therther
ignition contrignition contr
ignition contr
ignition contrignition contr
t out tert out ter
t out ter
t out tert out ter
alvalv
e or primare or primar
alv
e or primar
alvalv
e or primare or primar
Shor Shor
t or incort or incor
Shor
t or incor
Shor Shor
t or incort or incor
gg
e there ther
g
e ther
gg
e there ther
operoper
ty damaty dama
oper
ty dama
operoper
ty damaty dama
oltaolta
gg
olta
g
oltaolta
gg
e will damae will dama
g
e will dama
gg
e will damae will dama
mostamosta
mosta
mostamosta
!
mostamosta
mosta
mostamosta
gg
t installat installa
t installa
t installat installa
WARNING
t (24 vt (24 v
t (24 v
t (24 vt (24 v
ol (120 vol (120 v
ol (120 v
ol (120 vol (120 v
minals onminals on
minals on
minals onminals on
y contry contr
ol tool to
y contr
ol to
y contry contr
ol tool to
rr
ect wiringect wiring
r
ect wiring
rr
ect wiringect wiring
mostamosta
t andt and
mosta
t and
mostamosta
t andt and
sonal injursonal injur
sonal injur
sonal injursonal injur
gg
g
gg
cuits ecuits e
cuits e
cuits ecuits e
ee
..
Higher Higher
e
.
Higher
ee
..
Higher Higher
gg
g
gg
k or firk or fir
k or fir
k or firk or fir
oror
or
oror
olts) to HUM onolts) to HUM on
olts) to HUM on
olts) to HUM onolts) to HUM on
y and/y and/
y and/
y and/y and/
ee
..
e
.
ee
..
xx
ceedingceeding
x
ceeding
xx
ceedingceeding
e contre contr
ol andol and
e contr
ol and
e contre contr
ol andol and
ee
e
ee
tiontion
tion
tiontion
m to Class IIm to Class II
m to Class II
m to Class IIm to Class II
..
.
..
olts).olts).
olts).
olts).olts).
Installation/Configuration
CAUTION
!
TT
o pro pr
ee
vv
ent electrical shocent electrical shoc
T
o pr
e
v
ent electrical shoc
TT
o pro pr
ee
vv
ent electrical shocent electrical shoc
or equipment damaor equipment dama
or equipment dama
or equipment damaor equipment dama
nect electric ponect electric po
nect electric po
nect electric ponect electric po
main fuse or cirmain fuse or cir
main fuse or cir
main fuse or cirmain fuse or cir
until installauntil installa
until installa
until installauntil installa
ww
er to system aer to system a
w
er to system a
ww
er to system aer to system a
cuit brcuit br
cuit br
cuit brcuit br
tion is completetion is complete
tion is complete
tion is completetion is complete
gg
ee
,,
g
e
,
gg
ee
,,
eakeak
eak
eakeak
k and/k and/
k and/
k and/k and/
discon- discon-
discon-
discon- discon-
er boer bo
er bo
er boer bo
..
.
..
tt
t
tt
xx
x
xx
NOTE
RR
ead all instread all instr
R
ead all instr
RR
ead all instread all instr
befbef
oror
e bee be
bef
or
e be
befbef
oror
e bee be
This thermostat is intended for use
with a low voltage system. Do not use
directly on a line voltage system unless
an isolation relay/transformer is
installed.
Do not exceed the ratings shown in the
Specifications section, preceding page.
If in doubt about the electrical ratings
of your heating/cooling system, have it
inspected by a qualified heating and air
uctions thoructions thor
uctions thor
uctions thoructions thor
ginning installaginning installa
ginning installa
ginning installaginning installa
5
oughloughl
oughl
oughloughl
tion.tion.
tion.
tion.tion.
yy
y
yy
PRECAUTIONSPRECAUTIONS
PRECAUTIONS
PRECAUTIONSPRECAUTIONS
conditioning contractor or licensed
electrician.
All wiring must conform to local and
national electrical codes and ordinances.
This control is a precision instrument,
and should be handled carefully.
Rough handling or distorting components could cause the control to
malfunction.
INSTINST
INST
INSTINST
ALLAALLA
ALLA
ALLAALLA
TION TION
AND CONFIGURAAND CONFIGURA
TION
AND CONFIGURA
TION TION
AND CONFIGURAAND CONFIGURA
TIONTION
TION
TIONTION
ATTENTION!ATTENTION!
ATTENTION!
ATTENTION!ATTENTION!
This product does not contain mercury.
However, this product may replace a
unit which contains mercury.
Do not open mercury cells. If a cell
becomes damaged, do not touch any
spilled mercury. Wearing nonabsorbent gloves, take up the spilled
mercury with sand or other absorbent
material and place into a container
which can be sealed. If a cell becomes
damaged, the unit should be discarded.
Mercury must not be discarded in
household trash. When the unit this
product is replacing is to be discarded,
place in a suitable container and return
to White-Rodgers at 2895 Harrison
Street, Batesville, AR 72501 for proper
disposal.
REMOVE OLD THERMOSTATREMOVE OLD THERMOSTAT
REMOVE OLD THERMOSTAT
REMOVE OLD THERMOSTATREMOVE OLD THERMOSTAT
Shut off electricity at main fuse or
circuit breaker box until installation is
complete AND the jumper leads (fig.
10, page 17) on the back of the
thermostat are configured properly.
Remove the front cover of the old
thermostat. With wires still attached,
remove wall plate from the wall.
Identify each wire attached to the
thermostat using one of the labels
enclosed with the new thermostat.
Disconnect the wires from the old
thermostat one at a time. DO NOT let
the wires fall back into the wall.
Install the new thermostat using the
following procedures.
6
ATTACH BASE TO WALLATTACH BASE TO WALL
ATTACH BASE TO WALL
ATTACH BASE TO WALLATTACH BASE TO WALL
Remove packing material from the
thermostat. Place fingers of one hand
on the center top and bottom portion
of the thermostat. Grasp the base in the
other hand on top and bottom center
and gently pull straight out. Forcing or
prying on the thermostat will cause
damage to the unit.
Place the base over the hole in the wall
where the wires come out and mark
mounting hole locations base as a
template. Drill
install screw anchors in the wall.
Run wires through hole in base and
attach base to wall (see fig. 2, page 7).
Insert the wires into the terminals on
the base using the appropriate wiring
diagram and tighten the terminal
screws.
3
/16” pilot holes, and
CONFIGURINGCONFIGURING
CONFIGURING
CONFIGURINGCONFIGURING
AND PROGRAMMINGAND PROGRAMMING
AND PROGRAMMING
AND PROGRAMMINGAND PROGRAMMING
Before the power is turned on, the
thermostat must be configured to
operate properly with the system. See
CONFIGURATION on page 16 in this
manual.
Mounting screws
1
Pull wires through this opening
2
Insert wires into terminal holes, then tighten screws
3
Screw anchors
4
Installation/Configuration
4
2
1
S1
S3
S2
3
1
WRH
G
HM1
Figure 2 – Thermostat base
7
Y
HM2
6
RC
WIRING DIAWIRING DIA
WIRING DIA
WIRING DIAWIRING DIA
GRAMSGRAMS
GRAMS
GRAMSGRAMS
All wiring diagrams are for typical systems only. Refer to equipment manufacturers' instructions for specific system wiring
information.
H
HM1 HM2
6
Y
G
W
E
1
From heating system
2
From 24 VAC transformer
3
Red jumper wire (provided)
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 3 – Typical wiring diagram for heating only, single transformer system
RC RH
1
3
2
RH
W
HM1 W RH RC G Y HM2 6
L
J
I
K
M
NOTE: Ensure that RED RH/RC jumper wire (provided with
thermostat) is connected between thermostat's RH and RC
terminals for proper operation with this system.
8
LETTER IDENTIFICATION FOR WIRING DIAGRAMS
Humidifier System
A
Zone Valve
B
Cooling System
C
Fan Relay
D
Heating System
E
Installation/Configuration
Jumper Wire
H
TRANSFORMER
I
24 VAC Side
J
120 VAC Side
K
Hot Side
L
Neutral Side
M
HEATING TRANSFORMER
N
COOLING TRANSFORMER
O
Jumper Wire (field-installed)
P
9
H
HM1 HM2
1
2
3
4
5
6
Y
G
C
From heating system
From 24 VAC transformer
Red jumper wire (provided)
From fan relay
From cool system
W
ED
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 4 – Typical wiring diagram for heat only, cool only, & heat/cool single transformer system
RC RH
3
2
1
Y
G
R
W
L
J
I
K
H
HM1 W RH RC G Y HM2 6
M
NOTE: Ensure that RED RH/RC jumper wire (provided with
thermostat) is connected between thermostat's RH and RC
terminals for proper operation with this system.
NOTE: For three-wire heat only system, connect terminals
RHRH
and
RH. For cool only system, connect terminals
RHRH
10
YY
,,
G G
Y
,
G and
YY
,,
G G
4
GG
G
GG
RHRH
RH.
RHRH
5
,,
WW
,
W
,,
WW
H
HM1 HM2
1
2
6
B
Y
614
5
2
G
From heating system
From 24 VAC transformer
W
(through zone valve)
3
Red jumper wire (provided)
4
From zone valve system
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 5 – Typical wiring diagram for heat only, three-wire, zone valve system
Installation/Configuration
RC
RH
3
2
1
R
W
H
L
J
I
HM1 W RH RC G Y HM2 6
K
M
NOTE: Thermostat must have batteries installed.
NOTE: Ensure that RED RH/RC jumper wire (provided with
thermostat) is connected between thermostat's RH and RC
terminals for proper operation with this system.
11
4
6
HM1 HM2
6
G
Y
W
RC RH
C
1
From heating system
2
From 24 VAC heating transformer
3
From 24 VAC cooling transformer
4
From fan relay
5
From cooling system
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
2
1
L
ED
J
I
K
HM1 W RH RC G Y HM2 6
3
Y
G
W
R
H
RC
M
L
J
O
K
M
Figure 6 – Typical wiring diagram for heat/cool, two-transformer system
12
5
4
HM1 HM2
6
G
Y
C
W
D
RC
RH
2
3
1
L
J
I
HM1 W RH RC G Y HM2 6
K
Y
G
C
R
1
From 24 VAC cooling transformer
2
From fan relay
3
From cooling system
For humidifier wiring see pages 14-15.
See page 9 for letter identification.
Figure 7 – Typical wiring diagram for three-wire cooling system
Installation/Configuration
M
13
1
1
HM1
6 Y G W
HM2
RC RH
A
NOTE: Two terminal choices (HM1 or HM2) are provided for
humidifier control. When the humidity setting is higher than the
room humidity:
HM1 turns off the humidifier when the call for heat ends.
HM2 powers the humidifier an additional 30 seconds after the
call for heat ends to provide slightly more humidity output.
Most installers will use HM1 unless they feel more humidity is
desirable.
Figure 8 – Typical wiring diagram for 24V humidifier system
14
H
M
HM1 W RH RC G Y HM2 6
L
KJ
I
M
1
From humidity system
See page 9 for letter identification.
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