Page 1
WHITE-RODGERS
WARNING
!
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
This wall-mounted, low voltage thermostat maintains
room temperature by controlling the operation of heating
and cooling systems. The user may program up to four
time/temperature settings per 24 hour period. The thermostat stores independent heating and cooling programs
for each day of the week. The thermostat will store both
heating and cooling programs simultaneously. Three
“AA” Energizer® batteries will maintain the stored program
for approximately one year, if incoming power should fail.
If power failure is extensive and the program is lost, after
power restoration, the thermostat will automatically maintain a factory preprogrammed heating temperature of
64°F or a cooling temperature of 82°F.
1F97-51
7-Day Electronic Digital Thermostat
INST ALLA TION INSTRUCTIONS
DESCRIPTION
If in doubt about whether your wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air
conditioning contractor, electrician, or someone familiar
with basic electricity and wiring.
Do not exceed the specification ratings.
CONTENTS
Description......................................................... 1
Precautions........................................................ 1
Specifications..................................................... 2
Installation.......................................................... 2
New Installation
Select Thermostat Location
Route Wires to Location
Replacement Installation
Remove Old Thermostat
Attach Subbase to Wall
Attach Thermostat to Subbase
Operation ........................................................... 6
System Configuration
Electric Heat Systems
Energy Management Recovery (EMR)
Check Thermostat Operation
Fan Operation
Heating System
Cooling System
Troubleshooting
PRECAUTIONS
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.
CAUTION
!
To prevent electrical shock and/or equipment
damage, disconnect electric power to system, at
main fuse or circuit breaker box, until installation
is complete.
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and
could cause shock or fire hazard.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will
burn out thermostat and could cause personal
injury and/or property damage.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
R
Printed in U.S.A.
PART NO. 37-5049B
Replaces 37-5049A
9518
Page 2
SPECIFICATIONS
ELECTRICAL DATA
Electrical Rating:
17 to 30 VAC 50/60 Hz.
0.05 to 1.5 Amps
1.5 Amps Maximum Total Load (All terminals
combined)
Anticipation:
Heating 2 to 40
Cooling 4 to 40
Reference Values
}
THERMAL DATA
Setpoint Temperature Range:
40°F to 99°F (4°C to 37°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
INSTALLATION
NEW INST ALLATION
You should program the thermostat with batteries
installed before attaching on subbase. See OPERATION GUIDE for programming instructions.
SELECT THERMOSTAT LOCATION
Proper location insures that the thermostat will provide a
comfortable building temperature. Observe the following
general rules when selecting a location:
1. Locate thermostat about 5 ft. above the floor.
2. Install thermostat on a partitioning wall, not on an
outside wall.
3. Never expose thermostat to direct light from lamps,
sun, fireplaces or any temperature radiating equipment.
4. Avoid locations close to windows, adjoining outside
walls, or doors that lead outside.
5. Avoid locations close to air registers or in the direct
path of air from them.
6. Make sure there are no pipes or duct work in that part
of the wall chosen for the thermostat location.
7. Never locate thermostat in a room that normally
warmer or cooler than the rest of the building.
8. Avoid locations with poor air circulation, such as
behind doors or in alcoves.
APPLICATIONS
For use with:
• Standard heat/cool, heat-only, or cool-only systems
• Electric heat systems
• Gas or oil fired systems
• Gas systems with intermittent ignition devices
(I.I.D.) and/or vent dampers
Do not use with:
• Multi-stage systems
• Heat pump systems
• Systems exceeding 30 VAC and 1.5 Amps
ACCESSORIES
Thermostat Guard W. R. Part No. F29-0198 (clear) or
F29-0238 (opaque)
1. Probe for obstructions in partition before drilling 1⁄2”
hole in wall at selected location. Take up quarter
round and drill a small guide hole for sighting (see
fig. 1). From basement, drill 3⁄4” hole in partition
floor next to guide hole. In buildings without basements, drill 1⁄2” hole through ceiling and into partition from above.
2. Through this hole drop a light chain, or 6” chain
attached to a strong cord. Snag cord in basement with
hooked wire. In buildings without basements, drop
cord through hole in ceiling and down partitioning;
snag cord at the thermostat location.
3. Attach thermostat wire to cord and pull wire through
hole in wall so that 6” of wire protrudes.
1
⁄2” hole for
thermostat wire
Stout cord with 6”
chain attached
Approximately
Baseboard
strip moulding
Quarter round
removed
1
⁄4” guide hole
for sighting
5 feet from floor
ROUTE WIRES TO LOCATION
NOTE
All wiring must conform with local and national electrical
codes and ordinances.
2
3
⁄4” hole in floor of partition
Hooked wire for snagging chain
Figure 1. Routing thermostat wires
Page 3
REPLACEMENT INST ALLA TION
G
RC
Mounting
hole
Pull wires through
this opening
Connect wires under
terminal screws
Mounting
hole
6-pin connector
2-pin connector
Y
W
Screw
anchors
Figure 3. Subbase
Activity
light
RH
REMOVE OLD THERMOSTAT
1. Shut off electricity at the main fuse box until installation is complete. Verify power is off with a voltmeter.
2. Remove the front cover of the old thermostat. With
wires still attached, remove wall plate from the wall.
3. If the old thermostat has a wall mounting plate,
remove the thermostat and the wall mounting plate as
an assembly.
4. FOR HEATING ONLY SYSTEMS — Disconnect the
two wires from the old thermostat. Skip steps 5
through 7 below and proceed to ATTACH SUBBASE
TO WALL.
5. FOR HEATING/COOLING SYSTEMS — Before re-
moving wires from old thermostat, identify the terminals that have wires attached on the old thermostat.
Then use Table 1 to identify the type of thermostat you
are replacing. For example, if the old thermostat has
wires attached to terminals R, W, Y, and G, the old
thermostat is a type 5 (note that the old thermostat
may not have wires attached to all the terminals
identified in Table 1).
6. Use the self-adhesive labels enclosed with your
new thermostat to identify the wires attached to
the old thermostat. The labels correspond to the
thermostat type number you identified in step 5 above
(see Table 2). For example, if you determined that the
old thermostat is a type 5, use the labels for the type
5 thermostat (you may not use all the labels for the
type number you’ve identified if the old thermostat did
not have wires attached to all the terminals).
7. Label each wire as you disconnect it. The labels have
both the old terminal markings and the new terminal
identification. Discard any unused labels. PULL AT
LEAST SIX INCHES OF WIRE OUT OF THE WALL
WHEN YOU DISCONNECT IT - DO NOT ALLOW
THE WIRES TO FALL BACK INTO THE WALL.
TABLE 1. OLD THERMOSTAT IDENTIFICATION
OLD
THERMOSTAT
TYPE
Type
1
Type
2
Type
3
Type
4
Type
5
RH
R5
OLD THERMOSTAT
TERMINAL IDENTIFICATION
4
W
RC
W
RC
M
H
V
4
R
W
Y
Y
C
Y6
Y
G
G
F
G
G
TABLE 2. WIRE IDENTIFICATION LABELS
Type
Type
Type
Type
Type
1
2
3
4
5
New Old
RH 4
New Old
RH RH
New Old
RH M
New Old
RH R5
New Old
RH R
New Old
W W
New Old
W W
New Old
W H
New Old
W 4
New Old
W W
New Old
RC RC
New Old
RC RC
New Old
RC V
New Old
Y Y
New Old
Y Y
New Old
Y C
New Old
Y Y6
New Old
Y Y
New Old
G G
New Old
G G
New Old
G F
New Old
G G
New Old
G G
ATTACH SUBBASE TO WALL
1. Remove the packing material from the thermostat.
Place the fingers of one hand on the center top and
bottom portion of the thermostat. Grasp the subbase
in the other hand on the top and bottom center, and
gently pull straight out (see fig. 2). The thermostat has
pin and socket connectors. Forcing or prying on the
thermostat will cause damage to the unit.
2. Pull wires through opening in the center of the subbase. DO NOT LET WIRES FALL BACK INTO
WALL.
3. Connect wires beneath terminal screws on subbase using appropriate wiring schematic (see figs.
3 through 8).
4. Place subbase over hole in wall and mark mounting
hole locations on wall using subbase as a template.
(Installation instructions continue on page 5.)
PULL STRAIGHT OUT
Figure 2. Removing thermostat from subbase
3
Page 4
NOTE
All wiring diagrams are for typical systems only. Refer to
equipment manufacturers’ instructions for specific system wiring information.
Y
G W
Heating
System
RC
Figure 4. Typical wiring diagram for heat only, 2-wire, single transformer systems
RH
24 VAC
CAUTION
!
To prevent electrical shock and/or equipment
damage, disconnect electrical power at the main
fuse box or circuit breaker until installation is
complete.
From heating system
From 24 VAC transformer
THERMOSTAT
SYSTEM
W
W
RC
G
Hot
120 VAC
Neutral
TRANSFORMER
RH
RH
Thermostat Terminal Connections
Y
NOTE
RED jumper wire (pro-
vided with thermostat)
must be connected between thermostat's RH
and RC terminals for proper thermostat operation
with this system.
Figure 5. Typical wiring diagram for heat only, 3-wire, single transformer systems
Y
Cooling
System
Figure 6. Typical wiring diagram for cool only, 3-wire, single transformer systems
Y
G W
Fan
Relay
G W
Fan
Relay
Heating
System
RC
JUMPER
RC
RH
WIRE
RH
THERMOSTAT
24 VAC
TRANSFORMER
THERMOSTAT
24 VAC
TRANSFORMER
SYSTEM
Neutral
SYSTEM
Hot
120 VAC
Hot
120 VAC
Neutral
RH
From 24 VAC
transformer
From heating system
W
G
RH
RH
CONNECT red jumper
wire (provided)
Thermostat Terminal Connections
From 24 VAC
transformer
RC
G
RC
Y
From fan relay
From cooling system
Thermostat Terminal Connections
W
RC
G
Y
From fan relay
W
G
Y
4
Page 5
NOTE
RED jumper wire (pro-
vided with thermostat)
must be connected between thermostat's RH
and RC terminals for proper thermostat operation
with this system.
Figure 7. Typical wiring diagram for heat/cool, 4-wire, single transformer systems
Y
Cooling
System
G W
Fan
Relay
Heating
System
RC
JUMPER
WIRE
RH
THERMOSTAT
24 VAC
TRANSFORMER
SYSTEM
Hot
Neutral
120 VAC
CONNECT red jumper
wire (provided)
RH
RH
From 24 VAC
transformer
Thermostat Terminal Connections
From heating system
W
W
RC
G
Y
From cooling system
G
Y
From fan relay
Y
G W
RC
NOTE
This system does not
require RED jumper
wire (provided with
thermostat).
Cooling
System
Fan
Relay
Heating
System
Figure 8. Typical wiring diagram for heat/cool, 5-wire, two-transformer system
5. Move subbase out of the way. Drill mounting holes.
6. Fasten subbase loosely to wall, as shown in fig. 3,
using two mounting screws. Place a level against
bottom of subbase, adjust until level, and then tighten
screws. (Leveling is for appearance only and will not
affect thermostat operation.) If you are using existing
mounting holes, or if holes drilled are too large and do
not allow you to tighten subbase snugly, use plastic
expansion plugs to secure subbase.
7. Push excess wire into wall and plug hole with a fireresistant material (such as fiberglass insulation) to
prevent drafts from affecting thermostat operation.
Y
RH
From heating
system
W
RC
G
From cooling
W
RC
G
Y
From fan relay
system
RH
THERMOSTAT
SYSTEM
24 VAC 120 VAC
HEATING TRANSFORMER
24 VAC
COOLING TRANSFORMER
Hot
Neutral
Hot
120 VAC
Neutral
From 24 VAC
cooling transformer
RH
From 24 VAC
heating transformer
Thermostat Terminal Connections
To attach thermostat to subbase, line up the plastic snap
guides at the bottom of the thermostat and the two
connector pins on the thermostat with the connectors
near the bottom left section of the subbase (when viewed
from the front). Gently pivot the thermostat up until the six
pin connectors and the plastic snaps lock into place (see
fig. 9). Be gentle when attaching thermostat. If the
thermostat does not seem to be attaching to the subbase
easily, make sure that the connector pins and plastic
snaps are properly aligned, and that excess wire is
pushed into the wall. Damage to the thermostat may
occur if force is used.
ATTACH THERMOSTAT TO SUBBASE
CAUTION
!
USE
FORE ATTACHING THERMOSTAT TO WALL.
FAILURE TO TURN OFF THERMOSTAT BEFORE
ATTACHING MAY CAUSE EQUIPMENT DAMAGE
DUE TO RAPID COMPRESSOR CYCLING.
SYSTEM
TO TURN THERMOSTAT OFF BE-
SWITCH
ENGAGE TWO LOWER GUIDES;
PIVOT UP
Figure 9. Attaching thermostat to subbase
5
Page 6
OPERATION
SYSTEM CONFIGURATION
ELECTRIC HEAT SYSTEMS
NOTE
For central electric heat systems where the blower is
energized by a separate circuit through the fan relay
(meaning that the fan turns on immediately on call for
heat), clip wire W14 on the back of the thermostat (see fig.
10). If the thermostat is energizing electric heat sequenc-
ers, DO NOT clip wire W14.
ENERGY MANAGEMENT RECOVERY
(EMR)
When the EMR feature is activated, the thermostat’s
microcomputer automatically calculates the time it will
take to change the temperature to the next program
setting. Then the thermostat will energize the heating or
cooling system to change the temperature so that the
desired temperature is reached at or near the beginning
of the next program period (the thermostat’s microcomputer calculates 15 minutes for every 2°F temperature
change). For example, assume that the thermostat is
programmed to provide an overnight heating temperature
of 62°F, and during the next program period, scheduled to
begin at 6:00 AM, the programmed temperature is 70°F.
With EMR activated, the thermostat will automatically
energize the heating system at 5:00 AM, so that the
programmed temperature of 70°F is reached by about
6:00 AM.
The thermostat is shipped with the EMR feature inactive,
which means that the thermostat will energize the heating
or cooling system at, not before, the beginning of the
program period (real time).
To activate the EMR function, clip wire S3 on the back
of the thermostat (see fig. 10).
6-pin Connector
W14
S3
2-pin Connector
Figure 10. Back of thermostat
Batteries
CHECK THERMOST A T OPERA TION
If at any time during testing the system does not function
correctly, disconnect electrical power at the main fuse or
circuit breaker and check that all wiring is correct.
FAN OPERATION
1. Turn on power to the system. If the heat source has
a standing pilot, be sure to light it.
2. Press
should begin to operate (this will work only on sys-
tems where the G terminal is connected to the blower
relay).
3. Press
blower should stop operating within approximately
one minute.
1. Press
be displayed).
2. Press to adjust thermostat above room temperature to call for heat. The heating system should
begin to operate.
FAN
until FAN ON is displayed. The blower
SWITCH
FAN
until FAN AUTO is displayed. The
SWITCH
HEATING SYSTEM OPERATION
SYSTEM
until HEAT is displayed (it may already
SWITCH
6
Page 7
COOLING SYSTEM OPERATION
CAUTION
!
To prevent compressor and/or property damage,
if power to the compressor has been off or
interrupted for more than 1 hour and the outdoor
temperature is below 50°F, DO NOT operate the
system for at least the amount of time the compressor was off! This will allow the compressor
heaters to warm the compressor oils to avoid
damage due to slugging.
1. Press
2. Press to adjust thermostat below room temperature to call for cool. The blower should come on
immediately, followed by cold air circulation. However, if the blower does not come on and the word
COOL is flashing, the compressor lockout feature is
operating (see Lockout Bypass Option to temporarily override the compressor lockout feature during
testing).
Refer to the OPERATION GUIDE if you need additional
information on thermostat operation.
SYSTEM
until COOL is displayed.
SWITCH
LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE
ONLY. OPERATORS SHOULD NOT USE THIS FEATURE DUE TO POSSIBILITY OF EQUIPMENT OR
PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermostat will lock out the compressor to allow head pressure to stabilize. If you want to override this feature
while testing thermostat operation, simply press
VIEW
and
buttons at the same time at initial startup.
PRGM
VIEW
TEMP
DO NOT USE THE LOCKOUT BYPASS OPTION
UNLESS THE COMPRESSOR OIL HEATERS HAVE
BEEN OPERATIONAL FOR 6 HOURS AND THE
SYSTEM HAS NOT BEEN OPERATIONAL FOR AT
LEAST 5 MINUTES.
TROUBLESHOOTING
Refer to the Question & Answer section of the OPERATION GUIDE for information on troubleshooting the ther-
mostat.
7
Page 8
If you need further information about this product, please write to:
WHITE-RODGERS
Division of Emerson Electric Co.
9797 Reavis Road
St. Louis, MO 63123-5398
ATTN: Technical Service Department
Loading...