Johnson Controls T701DFN-1 User manual

Remote sensor ready
Self-prompting adjustment
Auto 2-pipe changeover
when used with accessory
changeover sensor
Dry contact equipped
Backlit display
One For AllTM
works with
most all fan coil systems
Electric heat ready
Non-volatile memory
Dual setpoint with
adjustable deadband
Keypad lockout
Configurable display
Display either F or C
Terminals on backplate
2 or 4 pipe systems
Non-Programmable
Thermostat
Installation
Instructions
model T701DFN-1
Thermostat
Fan Coil

P/N T701DFN-1
Page 1
Copyright 2010, All Rights Reserved
TABLE OF CONTENTS
CAUTION
WARNING
Follow Installation Instructions
carefully. Disconnect Power
to the Heater/Air Conditioner
before removing the old therm-
ostat and installing the new
thermostat.
Step #1: Preparation
Step #2: Applications
Step #4: Test Operation
Troubleshooting
2
3
6
11
Step #3: Wire Connections
4
IMPORTANT: The T701DFN-1 and T701DFP-1 Series Thermostat
Controllers are intended to provide an input to equipment under
normal operating conditions. Where failure or malfunction of the
thermostat controller could lead to personal injury or property damage
to the controlled equipment or other property, additional precautions
must be designed into the control system. Incorporate and maintain
other devices, such as supervisory or alarm systems or safety or limit
controls, intended to warn or protect against failure or malfunction of
the thermostat controller.
IMPORTANT: The T701DFN-1 and T701DFP-1 Series Thermostat
Controllers are intended to provide an input to equipment under
normal operating conditions. Where failure or malfunction of the
thermostat controller could lead to personal injury or property damage
to the controlled equipment or other property, additional precautions
must be designed into the control system. Incorporate and maintain
other devices, such as supervisory or alarm systems or safety or limit
controls, intended to warn or protect against failure or malfunction of
the thermostat controller.
Sample Wiring Diagram
14

Drill with 3/16
inch Drill Bit
(when not
using j-box)
Proper installation of the thermostat will be accomplished by
following these step by step instructions. If you are unsure
about any of these steps, call a qualified technician for
assistance.
Assemble tools.
Flat Blade
Screwdriver Wire cutter
& Stripper
Make sure your Heater/Air Conditioner is working properly
before beginning installation of the thermostat.
Carefully unpack the thermostat. Save the screws, wall
anchors, and instructions.
STEP #1
PREPARATION
Turn off the power to the Heating/Air Conditioning system
at the main fuse panel.
Page 2
Installation
Location Considerations
Locate the T701 Series Thermostat Controller:
on a partitioning wall, approximately 5 ft (1.5 m) above the floor in a
location of average temperature.
away from direct sunlight, radiant heat, outside walls, outside doors, air
discharge grills, or stairwells; and from behind doors.
away from steam or water pipes, warm air stacks, unconditioned areas
(not heated or cooled), or sources of electrical interference.

Remove the cover of the old thermostat. If it does not come
off easily check for screws.
Loosen the screws holding the thermostat base or subbase
to the wall and lift away.
Disconnect the wires from the old thermostat. Tape the ends
of the wires as you disconnect them and mark them with the
letter of the terminal for easy reconnection to the new
thermostat.
Keep the old thermostat for reference purposes until your
new thermostat is functioning properly.
STEP #2
APPLICATIONS
Note: This thermostat is strictly a low voltage control. A compatible
relay board must be installed to isolate the 24 volt wires from the line
voltage to the fan. Page 3
IMPORTANT: Make all wiring connections in accordance with local,
national, and regional regulations. Do not exceed the electrical ratings
of the T701 Series Thermostat Controller.
CAUTION: Risk of Electric Shock.
Disconnect power supply before making electrical connections
to avoid electric shock.
CAUTION: Risk of Property Damage.
Do not apply power to the system before checking all wire
connections. Short circuited or improperly connected wires
may result in permanent damage to the equipment.
New Applications
Existing Applications
Follow the thermostat and E-M (Electro-Mechanical) wiring
diagrams supplied with the submittal package, and afixed to
the fan coil unit enclosure. Go to pages 6 through 10 for
instructions to test operation for the available applications.

If the terminal designations on your old
thermostat do not match those on the
new thermostat, refer to the chart below.
STEP #3
WIRE CONNECTIONS
Page 4
4-PIPE SYSTEMS
Wire from the
old thermostat
terminal marked
Install on the
new thermostat
terminal marked
Function
Cooling
Heating
Power
Common
Low
Fan Speed
Medium
Fan Speed
High
Fan Speed
Y1
W1
R
C
G
G2
G3
Y1, Y or C
W1, W or H
Rh, R, M, Vr, A
C
G, F or LOW
MED
HIGH
Note: Be sure to seal any opening through
the wall behind the thermostat with fireproof
material to prevent improper temperature
sensing of the conditioned space.

If the terminal designations on your old
thermostat do not match those on the
new thermostat, refer to the chart below.
STEP #3
WIRE CONNECTIONS
Page 5
2-PIPE SYSTEMS
Wire from the
old thermostat
terminal marked
Install on the
new thermostat
terminal marked
Function
Water Valve
Strip Heater
Power
Common
Low
Fan Speed
Medium
Fan Speed
High
Fan Speed
Y1
W1
R
C
G
G2
G3
Y1, Y or C
W1, W or H
Rh, R, M, Vr, A
C
G, F or LOW
MED
HIGH
Note: Be sure to seal any opening through
the wall behind the thermostat with fireproof
material to prevent improper temperature
sensing of the conditioned space.

Press the MODE button repeatedly until the
HEAT icon appears on the display. Press the UP
or DOWN buttons until the set temperature is 10
degrees above room temperature. The hot water
valve will open and the fan will be running.
Press the MODE button repeatedly until the
COOL icon appears on the display. Press the UP
or DOWN buttons until the set temperature is 10
degrees below room temperature. The cold water
valve will open and the fan will be running.
Turn the power on to the Fan Coil Unit.
Press the UP button until the setpoint is equal to
the room temperature. Press the Fan button
repeatedly until a single bar appears next to the
Fan icon. Confirm the fan is running on low
speed. Press the Fan button again, confirm the
fan is running on medium speed. Again, press
the Fan button, confirm the fan is running at high
speed. Press the Fan button once more, the
bars next to the Fan icon should disappear.
Press the MODE button repeatedly until the OFF
icon appears on the display. Both valves will be
closed and the fan will be off.
STEP #4
TEST OPERATION
4-PIPE SYSTEM
Page 6

If hot water is available, press the MODE button
repeatedly until the HEAT icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees above room
temperature. The hot water valve will open and the
fan will be running.
If cold water is available, press the MODE button
repeatedly until the COOL icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees below room
temperature. The cold water valve will open and
the fan will be running.
Press the UP button until the setpoint is equal to
the room temperature. Press the Fan button
repeatedly until a single bar appears next to the
Fan icon. Confirm the fan is running on low
speed. Press the Fan button again, confirm the
fan is running on medium speed. Again, press
the Fan button, confirm the fan is running at high
speed. Press the Fan button once more, the
bars next to the Fan icon should disappear.
Press the MODE button repeatedly until the OFF
icon appears on the display. Both valves will be
closed and the fan will be off.
2-PIPE, CHANGEOVER SENSOR, NO STRIP HEAT
STEP #4
TEST OPERATION
Page 7
Turn the power on to the Fan Coil Unit and confirm
that the thermostat is programmed correctly in setup
steps #3 and #4 on page 11 of the Owner’s Manual.

If Heat Only, press the MODE button
repeatedly until the HEAT icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees above room
temperature. The hot water valve will open and the
fan will be running.
If Cool Only, press the MODE button
repeatedly until the COOL icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees below room
temperature. The cold water valve will open and
the fan will be running.
Press the MODE button repeatedly until the OFF
icon appears on the display. Both valves will be
closed and the fan will be off.
Press the UP button until the setpoint is equal to
the room temperature. Press the Fan button
repeatedly until a single bar appears next to the
Fan icon. Confirm the fan is running on low
speed. Press the Fan button again, confirm the
fan is running on medium speed. Again, press
the Fan button, confirm the fan is running at high
speed. Press the Fan button once more, the
bars next to the Fan icon should disappear.
2-PIPE, NO CHANGEOVER SENSOR
STEP #4
TEST OPERATION
Page 8
Turn the power on to the Fan Coil Unit and confirm
that the thermostat is programmed correctly in setup
steps #3 and #4 on page 11 of the Owner’s Manual.

If hot water is available, press the MODE button
repeatedly until the HEAT icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees above room
temperature. The hot water valve will open and the
fan will be running. The strip heat will be locked
out if hot water is available.
If cold water is available, press the MODE button
repeatedly until the COOL icon appears on the
display. Press the UP or DOWN buttons until the
set temperature is 10 degrees below room
temperature. The cold water valve will open and
the fan will be running.
If hot water is not available, but your unit is
equipped with a strip heat system, press the UP or
DOWN buttons until the set temperature is 10
degrees below room temperature. The unit should
energize the strip heaters and the fan will be
running.
2-PIPE, CHANGEOVER SENSOR, WITH STRIP HEAT
STEP #4
TEST OPERATION
Page 9
Turn the power on to the Fan Coil Unit and confirm
that the thermostat is programmed correctly in setup
steps #3 and #4 on page 11 of the Owner’s Manual.

Press the MODE button repeatedly until the OFF
icon appears on the display. Both valves will be
closed and the fan will be off.
Press the UP button until the setpoint is equal to
the room temperature. Press the Fan button
repeatedly until a single bar appears next to the
Fan icon. Confirm the fan is running on low
speed. Press the Fan button again, confirm the
fan is running on medium speed. Again, press
the Fan button, confirm the fan is running at high
speed. Press the Fan button once more, the
bars next to the Fan icon should disappear.
2-PIPE, CHANGEOVER SENSOR, WITH STRIP HEAT
STEP #4
TEST OPERATION
Page 10

SYMPTOM: The fan will not run in all three
speeds or switches speeds in an improper order.
CAUSE: Incorrect wiring between the thermostat
and the relay board, or between the relay board
and the fan wires.
REMEDY: Recheck the wiring (G=low speed,
G2=medium speed, G3=high speed).
SYMPTOM: Cold water valve opens for either a
cool or a heat demand in a 4-pipe system.
CAUSE: The thermostat has been programmed
for the incorrect type of fan coil.
REMEDY: Confirm that you have entered the
correct programming for your type of fan coil
system (steps #3 and #4, page 11 of the
Owner’s Manual).
SYMPTOM: The water valve does not open at all
in 2-pipe configurations.
CAUSE: The thermostat has been programmed
for the incorrect type of fan coil system or the fan
coil is not wired to the thermostat correctly.
REMEDY: Program the thermostat for a 2-pipe
fan coil (step #3, page 11 of the Owner’s Manual).
Also, make certain that the water valve is wired to
the Y1 terminal.
TROUBLESHOOTING
SYMPTOM: Parts of the thermostat display are
missing.
CAUSE: The thermostat has been programmed
for a minimal display.
REMEDY: Program the thermostat for Full
Display (step #1, page 10 of the Owner’s
Manual).Page 11

SYMPTOM: The thermostat displays large set-
point digits instead of the room temperature.
CAUSE: The thermostat has been programmed
to display Single Setpoint.
REMEDY: Program the thermostat to display
Dual Setpoint (step #2, page 10 of the Owner’s
Manual).
SYMPTOM: The thermostat display is stuck in
Unoccupied.
CAUSE: The sensor connected to the Dry Contact
terminals of the thermostat, is active, forcing the
unit into ‘Unoccupied.’
REMEDY: Verify proper wiring between the
thermostat and the occupancy sensor and verify
that the wiring is not shorted.
If no sensor is connected, program the Dry
Contact polarity for Normally Open (step #11,
page 13 of the Owner’s Manual).
TROUBLESHOOTING
Page 12

SYMPTOM: The thermostat will only allow Heat
or Off in 2-pipe installations, even though chilled
water is available.
CAUSE: Faulty, improperly wired, or improperly
installed H2O changeover sensor.
REMEDY: Confirm proper wiring of the change-
over sensor (between R and H2O). Confirm
proper placement of the sensor (good mechanical
coupling for temperature transfer).
Test the changeover sensor as follows:
1. Remove power from the fan coil system.
2. Disconnect the wire between the sensor and
the H2O terminal.
3. Place an ohmmeter between R and the wire
just disconnected from the sensor.
4. A good sensor will show continuity whenever
the water temperature is confirmed to be at or
below 65 degrees. If the sensor is open when
the water temperature is confirmed to be at or
below 65, replace the sensor.
TROUBLESHOOTING
Page 13

SAMPLE WIRING DIAGRAM
2-Pipe, Low Voltage Valve, H2O Changeover Sensor
BLACK
WHITE
Duct Sensor
SEN-700-1
R
R
RS
H2O
Y1
V
24 Volt
Water
Valve
RELAY BOARD
Thermostat
C
G
S1S2 R C C Y1 W1 Y2 G H M L
R
LOW
MED
HIGH
HEAT
COM
R
COM
NEUT HIGH MED LOW
MTR PWR
LINE VOLTAGE INPUTS
SPEED SELECT
24 VAC EH RELAY
COIL
L2/NEUT
115
115
208
208
230
203
277
277
TO FAN MOTOR
G3
G2
H2O Changeover Sensor
Important Note: If a
Duct sensor is conn-
ected to this thermostat
it is suggested that the
fan be programmed for
continuous operation.
Page 14
*NOTE: R wire from sensors should
be connected as close as possible to
thermostat terminal plate.
*NOTE:

P/N 88-823
Rev. 1L
TECHNICAL SPECIFICATIONS
T701 Series Thermostat Controllers
Power Requirements 20 - 30 VAC 50/60 Hz, 3 VA @ 24V nominal.
Output Rating
(fan or valve outputs)
0.4A max, 0.01A min, 3A inrush, 20 - 30 VAC
Digital Inputs H2O voltage free contacts, closed to signal CHILLED water supply
CK1 voltage free contacts, closed to alter setpoints
Local Temperature
Sensor Type
solid state temperature sensor, 10 mV / degF
Remote Temperature
Sensor Type
solid state temperature sensor, digital communications over two wires, 5 ft
cable supplied, accurate to 1 degF
Wire Size 16 AWG (100 ft max) to 24 AWG (36 ft max)
Temperature Adjustment
Range
35 to 99 degF (2 to 36 degC)
Accuracy 35 to 65 degF +/- 3 degF, greater than 65 to less than 80 degF +/- 2 degF,
80 to 99 degF +/- 3 degF, greater than 99 to 104 degF +/- 5 degF
Deadband Adjustable 1 to 6 deg first stage, fixed 1 degree for med/hi fan speeds
Ambient
Conditions
Operating 35 to 104 degF (2 to 40 degC), 5 – 95% RH non-condensing, 86 degF
max dew point
Storage -22 to 122 degF (-30 to 50 degC), 5 – 95% RH non-condensing, 86 degF
max dew point
Compliance UL/CUL listed, file E107041, NEC Class 2
Dimensions 3.14” H x 3.14” W x 1.1” D
Shipping Weight 0.25 kg
This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at his/her own expense.
United States
Canada
North American Emissions Compliance
This Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numerique de la Classe (A) respecte toutes les exigences du Reglement sur le materiel brouilleur du Canada.
‘ ‘ ‘