69-0928 - T7100D Microelectronic Conventional Thermostat

69-0928 - T7100D Microelectronic Conventional Thermostat
T7100D
Microelectronic Conventional Thermostat
INSTALLATION INSTRUCTIONS
A. ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE.
APPLICATION
The T7100D Microelectronic Thermostat provides
electronic control of 24 Vac commercial single zone
heating, ventilating, and air conditioning (HVAC) equipment. It is designed for use with Q7100A Subbases for
conventional heat/cool applications. User keys allow
system and fan selections. All T7100D Thermostats
require a common wire to supply power.
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash.
B. PRESS LOWER EDGE OF CASE TO LATCH.
Contact your local waste management authority for
instructions on recycling and the proper disposal of
the old thermostat.
INSTALLATION
M6799A
When Installing this Product...
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause a
hazardous condition.
2. Check ratings given in instructions and on product to
make sure product is suitable for your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
WARNING
Electrical Hazard.
Can cause electrical shock or equipment
damage.
Disconnect power supply before installation.
Fig. 1. Mounting thermostat on subbase.
NOTE: To remove the thermostat from the wall, first pull
out at the bottom of the thermostat; then remove
the top.
Using Thermostat Keys
The thermostat keys are used to:
• Set temperature,
• Display present setting,
• Configure Installer Setup,
• Check Self-Test.
Mounting and Wiring the Q7100 Subbase
Select models have keys to:
• Temporarily override the temperature,
• Set the system operation,
• Set the fan operation.
Refer to the subbase installation instructions for mounting
and wiring information.
See Fig. 2 for key information.
Mounting Thermostat
Mount the thermostat on the Q7100 Subbase after the
Q7100 is installed.
1. Engage tabs at the top of thermostat and subbase.
See Fig. 1.
2. Press lower edge of case to close and latch.
®U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. •
• All Rights Reserved
X-XX UL
69-0928-3
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
DISPLAY PRESENT SETTINGS
AND SCROLLS THROUGH
INSTALLER SETUP
(INFORMATION KEY)
Always check the display to determine if the thermostat
is controlling to the comfort, temporary or remote
setpoint. The occupied mode symbol is displayed when
the thermostat is controlling at the comfort setpoint.
Temporary is displayed when the occupancy sensor or
remote setback timer is energized.
INCREASE TEMPERATURE
SETTING
i
DECREASE TEMPERATURE
SETTING
INSTALLER SETUP
SELECT
FAN OPERATION
SELECT SYSTEM
OPERATION
NOTE: For most applications, the thermostat factory
settings do not need changing. Review the
factory settings in Table 2 and if no changes are
necessary, go to the Installer Self-Test section.
M11038A
Fig. 2. Thermostat key locations and descriptions.
The Installer Setup is used to customize the thermostat
to specific systems. Installer Setup numbers are listed in
Table 2. The table includes all available configuration
options.
SETTINGS
System and Fan Settings
System settings control the thermostat operation as
follows:
Heat: The thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool: The thermostat controls the cooling.
Auto: The thermostat automatically changes between
heating and cooling operation, depending on the
indoor temperature.
A combination of key presses is required to use the
Installer Setup feature:
— To enter the Installer Setup, press and hold the
Information i key with the increase ▲ and decrease
▼ keys until the first number is displayed. All display
segments appear for approximately three seconds
before the first number is displayed. See Fig. 3
and 4.
Fan settings control the system fan as follows:
On: Fan operates continuously.
Auto: Equipment controls fan.
—
To advance to the next Installer Setup, press the
Information i key.
—
To change a setting, use the increase ▲ or
decrease ▼ key.
The system default setting is Heat and the fan default
setting is Auto. Use the keys to change to the desired
settings.
—
To exit the Installer Setup, press and hold the
Information i key until the display returns to normal
(approximately three seconds). The display scrolls the
numbers backward to get to the normal display. The
Installer Setup is automatically exited if no key
presses are made for five minutes.
Temperature Settings
The default setpoint for heat is 70°F (21°C) and for cool
is 78°F (25.5°C). Press the increase ▲ or decrease▼
key to change the setting. To change between heat and
cool settings, press the Information i key until the
setting to be changed appears.
Em Ht Temporary Setting
Aux Ht
Remote
Room
%Humid
Outdoor
Repl
Wait
Heat Cool
Batt
System
Fan
Em HeatOffCool Auto Only OnAuto
Override Temperature Settings
(Select Models)
T7100 temperature settings can be overridden in two ways:
— Using a remote setback timer.
— Using an occupancy sensor.
M4844
Fig. 3. Display of all LCD segments.
The temperature settings change based on the Installer
Setup mode 27.
INSTALLER SETUP NUMBER DISPLAY
(COLUMN 2 OF TABLE 2)
NOTE: The Installer Setup mode 27 is factory set at zero
degrees so this setting must be changed for the
temperature to change.
FACTORY SETTING OR
OTHER CHOICE DISPLAY
(COLUMN 3 OR 5 OF TABLE 2)
The remote timer and occupancy sensor open (temporary
setpoint) or close (comfort setpoint) contacts according to
the settings. See Table 1.
Table 1. Examples of Temperature Overrides.
System
Setting
Comfort
Setpoint
Installer Setup
27 Setting
Temporary
Setpoint
Heat
68°F
10°F
58°F
Cool
74°F
10°F
84°F
M10132A
Fig. 4. Display of Installer Setup and setting.
69-0928—3
2
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
IMPORTANT
Only configurable mode numbers are shown on
the device. Example: If thermostat does not have
the changeover feature, Installer Setup mode 12
is not displayed. Review Table 2 factory settings
and mark any desired changed in the Actual
Setting column. When Installer Setup is complete, review the settings to confirm that they
match the system.
CAUTION
Equipment Damage.
Equipment damage can result by running
system without the fan.
Electric heat systems must be configured to 01 in
Installer Setup 02 .
Table 2. Thermostat Installer Setup Options.
Other Choices
(Press ▲ or ▼ key to change)
Select
Not used.
Mode Number
Factory Setting
(Press i key
to change)
Display
Description
Display
01
—
—
Fan operation. 02
00
01
Conventional
applications where
equipment
controls fan
operation in Heat
mode.
—
Output stages
of heating.
03
Depends Stages of heat.
on
subbase.
Heating Cycle
rate.
04
08
Not Used.
06 - 11
Changeovera.
12
Not used.
Degree
temperature
display.
—
—
Electric heat applications where
thermostat controls fan operation
in Heat mode.
01 or 02 01—One stage of heat.
02—Two stages of heat.
—
Stage 2
04 or 08 04-4 cph .
08-8 cph .
—
—
—
—
01
Automatic
changeover.
00
Manual changeover.
13
—
—
—
—
14
00
Temperature is
displayed in °F.
01
Temperature is displayed in °C.
Not used.
15 - 26
—
—
—
—
Heating/
cooling
overridea.
27
00
No temperature
change when
override key is
pressed.
01 - 15
°F the temperature setting is
changed when the override key is
pressed. Temporary is displayed.
Not used.
28 - 32
—
—
—
—
Minimum off
time for the
compressor.
33
04
4 minute minimum 00, 01,
Minimum number of minutes (0 - 5)
Off time for the
02, 03 or the compressor is off between calls
compressor.
05
for the compressor.
Not used.
34 - 36
—
—
—
—
Temperature
display
adjustment.
37
00
No difference in
displayed
temperature and
actual room
temperature.
01 - 06
01—Display adjusts to 1°F higher
than actual room temperature.
02—Display adjusts to 2°F higher
than actual room temperature.
03—Display adjusts to 3°F higher
than actual room temperature.
04—Display adjusts to 1°F lower
than actual room temperature.
05—Display adjusts to 2°F lower
than actual room temperature.
06—Display adjusts to 3°F lower
than actual room temperature.
05
Stage 1
Actual
Setting
Description
—
—
—
—
—
aAvailable on select models.
IMPORTANT
Review the settings to confirm that they match
the system. Press i to exit the Installer Setup.
3
69-0928—3
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
INSTALLER SELF-TEST
Use the Installer Self-Test to check the thermostat
configurations and operation. Refer to Table 3 for a list of
the available Self-Tests.
To start the Self-Test:
NOTE: The minimum off time for compressors is
bypassed during the Installer Self-Test.
TEST NUMBER
Press and hold the increase ▲ and decrease ▼ keys, at
the same time, until two zeros appear. All segments of
the LCD are displayed for three seconds before the two
zeros appear. Refer to Fig. 5 and 6.
Em Ht Temporary Setting
Aux Ht
M6792A
Fig. 6. Display of Test Mode number.
Table 3. Tests Available in the Installer Self-Test.
Remote
Room
%Humid
Outdoor
Repl
Wait
Heat Cool
Batt
System
Fan
Em HeatOffCool Auto Only OnAuto
M4844
Fig. 5. Display of all LCD segments.
Test
Number
Self-Test Description
10-19
Heating equipment can be turned on and off.
30-39
Cooling equipment can be turned on and off.
40-49
Fan equipment can be turned on and off.
60-69
Keyboard keys test.
70-79
Thermostat information including date code
and software versions is displayed.
Refer to Table 4 for the directions and results of the
specific tests.
NOTE: Press and hold the increase ▲ and decrease ▼
keys for three seconds to exit the Self-Test. The
Self-Test times out after five minutes without any
key presses.
Table 4. Installer Self-Test Options.
Key To
Press
Test
Number
Description
Heating Equipment Self-Test
i
▲
10
11
▲
▼
▼
12
11
10
Enter heating equipment Self-Test.
Stage-one heat comes on. When Installer Setup number 02 is 01, the system fan is also
energized.
Stage-two heat comes on. Stage-one heat and system fan remain on.
Stage-two heat turns off.
Stage-one heat and system fan turn off.
Cooling Equipment Self-Test
i
▲
▲
▼
▼
30
31
32
31
30
Change from heating to cooling equipment Self-Test.
Stage-one cooling and system fan come on.
Stage-two cool comes on. Stage-one cool and system fan remain on.
Stage-two cool turns off.
Stage-one cool and system fan turn off.
Fan Equipment Self-Test
i
▲
▼
KEY TEST a
i
▲
▼
Override
Systema
Fan a
40
41
40
Change from cooling to fan equipment Self-Test.
Fan comes on.
Fan turns off.
60
60
60
60
60
60
Displays 2.
Displays 4.
Displays 3.
Displays 5.
Displays 0.
Displays 1.
aAvailable on select models.
69-0928—3
4
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
4. Press the increase ▲ key again to display the
software revision number.
(Example: 001 = revision number 1)
Thermostat Information
1. Press the Information i key to access the thermostat information.
M6791
M4864
2. Press the increase ▲ key to display the production
date code. The first two large digits are the month
and the third digit is the last digit of the year.
(Example: 026 = February 1996)
5. Press the increase ▲ key again to display the
EEPROM identification code.
(Example: 222 = EEPROM ID 222)
M4867
M4865
6. Press and hold the increase ▲ and decrease ▼
keys together, until the room temperature is
displayed, to exit the Self-Test. The Self-Test times
out after five minutes without any key presses.
3. Press the increase ▲ key again to display the
software identification code.
(Example: 02 = software OD code 2)
M4866
5
69-0928—3
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
TROUBLESHOOTING GUIDE
Symptom
Display does not
come on.
Possible Cause
Thermostat is not powered.
Temperature
Room temperature display has
display is incorrect. been reconfigured.
Action
• Check that X terminal is connected to the system
transformer.
• Check for 24 Vac between X and R or RH terminals.
— If missing 24 Vac:
— Check if the circuit breaker is tripped—reset the
circuit breaker.
— Check if the system fuse is blown—replace the fuse.
— Check if the power switch on the HVAC equipment is
in the Off position—set to the On position.
— Check wiring between thermostat and HVAC
equipment—replace any broken wires and tighten
and loose connections.
— If 24 Vac is present, proceed with troubleshooting.
Enter Installer Setup 37 and reconfigure the display.
Thermostat is configured for °F Enter Installer Setup 14 and reconfigure the display.
or °C display (select models).
Bad thermostat location.
Relocate the thermostat.
Display shows two dashes and Installer Setup 22 is set for remote sensing and the sensor is
a degree sign.
missing or the circuit is open or shorted.
Temperature
Upper or lower temperature
settings will not
limits were reached.
change. (Example:
Cannot set heating
higher or cooling
lower.)
Check the temperature setpoints:
• Heating limits are 40 to 90°F (7 to 31°C)
• Cooling limits are 45 to 99°F (9 to 37°C)
Heating does not
come on.
No power to the thermostat.
• Check that X terminal is connected to the system
transformer.
• Check for 24 Vac between X and R or RH terminals.
— If missing 24 Vac:
— Check if the circuit breaker is tripped—reset the
circuit breaker.
— Check if the system fuse is blown—replace the fuse.
— Check if the system switch at the equipment is in the
Off position—set to On position.
— Check wiring between thermostat and HVAC
equipment—replace any broken wires and tighten
any loose connections.
— If 24 Vac is present, proceed with troubleshooting.
System selection is not set to
Heat.
Set system selection to Heat.
No power to the thermostat.
• Check that X terminal is connected to the system
transformer
• Check for 24 Vac between X and R or RC and Y terminals.
— If missing 24 Vac:
— Check if the circuit breaker is tripped—reset the
circuit breaker.
— Check if the system fuse is blown—replace the fuse.
— Check if the system switch at the equipment is in the
Off position—set to the On position.
— Check wiring between thermostat and HVAC
equipment—replace any broken wires and tighten
any loose connections.
— If 24 Vac is present, proceed with troubleshooting.
Cooling does not
come on.
Thermostat minimum Off time is • Wait up to five minutes for the system to respond.
activated and wait indicator is
• Enter Installer Setup 33. Reconfigure minimum off time (if
displayed.
required).
System selection is not set to
Cool.
Set system selection to Cool.
(continued)
69-0928—3
6
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
TROUBLESHOOTING GUIDE (continued)
Symptom
System On
indicator (flame =
heat, snowflake =
cool) is lit, but no
heat is being
delivered.
Possible Cause
Action
Fan operation is set for 00
(conventional heat) when it
should be set for 01 (electric
heat).
Enter Installer Setup 02 and reconfigure the fan operation.
Conventional heating
equipment turns on the fan
when the furnace has
warmed up to a setpoint.
Wait a minute after seeing the On indicator and then check the
registers.
Heating equipment is not
operating.
Verify operation of heating equipment in Self-Test.
7
69-0928—3
T7100D MICROELECTRONIC CONVENTIONAL THERMOSTAT
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 3N7
69-0928—3 G.S. Rev. 5-98 Printed in Taiwan R.O.C.
8
www.honeywell.com/building/components
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