F145-1328/F145-1378
Indoor Remote Sensor/Outdoor Remote Sensor
INSTALLATIONINSTRUCTIONS
Operator: Save these instructions for future use!
FAILURETOREADANDFOLLOWALLINSTRUCTIONSCAREFULLYBEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
INDOOR REMOTE SENSOR
OUTDOOR REMOTE SENSOR
Outdoor Probe
Interior Mounting Base
PRECAUTIONS
CAUTION
To prevent electrical shock and/or equipment dam-
age, disconnect electric power to system at main fuse
or circuit breaker box until installation is complete.
!
NOTE
If in doubt about whether your wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air
conditioning contractor or electrician.
Do not exceed the specification ratings.
WARNING
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause
shock or fire hazard.
!
All wiring must conform to local and national electrical codes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Roughhandlingordistortingcomponentscouldcause
the control to malfunction.
Do not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will damage
thermostat and could cause personal injury and/or
property damage.
The remote sensors cannot be used with systems where power
interruptions are part of normal system operation.
SPECIFICATIONS
The F145-1328 remote sensor is approved for indoor use Operating humidity range: 0 to 90% RH (non-condensing).
only.
20 gauge, three-conductor shielded cable must be used for all
Temperature range: 40° to 99°F
remote sensor wiring.
20 gauge, three-conductor shielded cable must be used for all
remote sensor wiring.
The F145-1378 remote sensor is approved for outdoor
use only.
Temperature range of outdoor probe: -40° to 140°F
White-Rodgers is a division
of Emerson Electric Co.
PART NO. 37-6606A
0440
WIRINGDIAGRAMS
Note: Also connect shield of 20 gauge 3 connector cable
to - or S3 on thermostat subbase.
Remote Sensor
S1 S2 S3
S1 S2 S3
+
S
–
To + or
To S or
To - or
To S1
To S2
To S3
Thermostat Subbase
Figure 1 – Single Stage Thermostat Remote Sensor Wiring (F145-1328)
Note: Also connect shield of 20 gauge 3 connector cable
to - or S3 on thermostat subbase.
SA SB SC OT
Remote Outdoor Sensor
+ Terminals
- Terminals
L
PH
D
SA SB SC OT
+
S
–
E2
Thermostat Subbase
Outdoor Probe
To +
To OT
To -
Remote Indoor Sensor A
Remote Indoor Sensor B
Remote Indoor Sensor C
+
S
–
+
S
–
+
S
–
To -
To -
To +
To SB
To +
To SC
To SA
To +
To -
Figure 2 – Staging Thermostat Multi-Stage or Heat Pump Indoor/Outdoor Remote Sensor Wiring
(F145-1328/F145-1378)
3
CONFIGURATION
Comfort-Set II
Comfort-Set III/Comfort-Set 90/90 Series
Single Stage Models: Verify jumper wire W-22 on the back
of the thermostat (not the subbase) has been clipped.
Multi-stage and Heat Pump Models: Verify jumper wire W-
18 on the back of the thermostat (not the subbase) has
been clipped.
Single Stage Models: Verify jumper wire W-922 on the
back of the thermostat (not the subbase) has been clipped.
You must also enable the remote sensor option in the
Installation Instructions, Configuration Menu.
Multi-stage and Heat Pump Models: When installing a
remote sensor you must enable the remote sensor option in
the Installation Instructions, Installer Menu.
REMOTE SENSOR CALCULATED PRIORITY AVERAGE
1F93-380, 1F94-371, 1F95-371, 1F95-377, 1F95-391
Single stage thermostats accept only 1 remote sensor. 90 Series multi-stage and heat pump thermostats accept up to 3
indoor remote sensors and can be assigned sensor priorities.
Tables 1-3 show how priority (LO, AVG, HI) effects the room temperature calculation. The example below table three shows
the calculation of each remote sensor and how it uses them to arrive at room temperature average.
Table 1: Remote Sensor A configured as a LO priority sensor
Remote Sensor
Priority
Sensor
SA
Priority
LO
Multiplier Room Temperature
Averaging Calculation
1 x 70 = 70 (Priority Multiplier x Room Temp.)
1
70°F (Sensor Temp.)
Table 2: Remote Sensor B configured as a AVG priority sensor
Remote Sensor
Priority
Sensor
SB
Priority
AVERAGE
Multiplier Room Temperature
Averaging Calculation
2 x 75 = 150 (Priority Multiplier x Room Temp.)
2
75°F (Sensor Temp.)
Table 3: Remote Sensor C configured as a HI priority sensor
Remote Sensor
Priority
Sensor
SC
Priority
HI
Multiplier Room Temperature
Averaging Calculation
4 x 80 = 320 (Priority Multiplier x Room Temp.)
4
80°F (Sensor Temp.)
The example below lists three sensors each with a different priority and room temperature. All three sensors are combined in
the calculation to display the average temperature. The priority multiplier shown in the tables above causes a sensor with
low priority to carry less weight in the calculated average. A sensor with a HI priority setting contributes more to the calcu-
lated average. Assume that the building in which the thermostat is located has three indoor remote sensors (SA, SB, SC)
that have different room temperatures (70, 75, 80). The calculated average will be displayed as the room temperature
shown in the example below.
Example: Remote Sensors A, B, and C configured as a LO, AVG, and HI priority sensors
Remote Sensor
Priority
Sensor
SA
SB
Priority
LO
AVERAGE
HI
Multiplier Room Temperature
Averaging Calculation
1
2
4
70°F (Sensor Temp.)
75°F (Sensor Temp.)
80°F (Sensor Temp.)
1 x 70 = 70 (Priority Multiplier x Room Temp.)
2 x 75 = 150 (Priority Multiplier x Room Temp.)
4 x 80 = 320 (Priority Multiplier x Room Temp.)
Avg. Calc. (540)/Sum Priority Mult. (7)
540/7 = 77°F (Calculated Displayed Temp.)
SC
4
REMOTESENSORTROUBLESHOOTINGGUIDE
Comfort-Set II
Comfort-Set III/Comfort-Set 90/90 Series
Single Stage Models: Verify jumper wire W-22 on the back
of the thermostat (not the subbase) has been clipped.
Multi-stage and Heat Pump Models: Verify jumper wire
W-18 on the back of the thermostat (not the subbase) has
been clipped.
Single Stage Models: Verify jumper wire W-922 on the
back of the thermostat (not the subbase) has been clipped.
You must also enable the remote sensor option in the
Installation Instructions, Configuration Menu.
Multi-stage and Heat Pump Models: When installing a
remote sensor you must enable the remote sensor option in
the Installation Instructions, Installer Menu.
Troubleshooting Chart
To function correctly and read temperature accurately, the thermostat (when set up for a remote as outlined above) must
have constant 24-volt power. If the thermostat temperature is steadily dropping, reading low, or reads 08° when a remote
sensor is installed, it can be traced to one of the three following conditions.
Condition
Test
Comments
1. Loss of 24-volt power. On models with batteries, remove the batteries and re-install For the sensor to read correctly,
thermostat. If the display is blank, check heating and cooling the 24-volt system power must
system to determine why 24-volt power is absent.
be present. Some systems may
require an isolation relay to pro-
vide constant power to the
thermostat. Limit or safety
devices in the equipment can
also cause a power interruption.
2. A broken wire on S1, Disconnect sensor wires at thermostat. Attach a short piece
Repair or replace the 3 wire
shielded cable. Be sure the
S2 and S3 or (+, SA, -)
from the thermostat to
the remote.
(2') of three-wire shielded cable to S1, S2 and S3 or (+, SA,
-) on the subbase. Bring the remote sensor to the thermostat remote wire run is not parallel
location and attach S1, S2 and S3 or (+, S, -) respectively.
Reattach thermostat. If the temperature begins to climb
to line voltage wires that carry
heavy inductive loads, or across
(slowly), it is reading correctly. If it reads correctly with the 2' fluorescent light ballasts that
length but improperly when attached to the wire run, it
indicates a fault in the wire run.
may cause an inductance to be
transmitted to the thermostat.
3. A shorted or
Because it is an electronic sensor, there are no Ohm values
Replace remote sensor.
damaged remote sensor. to test. If correct conditions as listed in 1 & 2 above and the
temperature stays at or near 08°, it indicates a shorted or
damaged remote sensor.
Note: Digital thermostats and remote sensors acclimate very slowly to temperature change. It may take an hour or more for
the temperature to acclimate to the room temperature from a low temperature reading as outlined above. To expedite the
room temperature display use the reset instructions listed in the installation instructions for the thermostat model you are
working with. When reset, the thermostat will default to a room temperature of 70° and begin sensing room temperature. Be
sure to reconfigure the installer menu for a remote sensor because the reset function may cancel remote sensing.
5
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
|