Siemens RDY2000 Installation Instructions Manual
Installation Instructions
RDY2000 Commercial
System Compatibility
Conventional
Up to 3 Heating/3 Cooling stages
Heat Pumps
Up to 4 Heating/2 Cooling stages
Electrical Characteristics
Power Supply
24 Vac +/-20%, Class 2, 4A max .
Power Usage
4 VA (maximum)
Output Relay
Ratings
Pilot duty, 1A max. per output, 4A
max total
Ambient Limitations
Operating
Temperature
Storage/Shipping
Temperature
Relative Humidity
Up to 95% (non-condensing)
Enclosure
Rating
NEMA 1
CAUTION:
Equipment damage or loss of
specified.
CAUTION:
Document No. 129-905
March 26, 2015
Room Thermostat
Figure 1. RDY2000 Thermostat.
Product Specifications
23°F to 122°F (-5°C to 50°C)
-13°F to 158°F (-25°C to 70°C)
NOTE: The RDY2000 is not battery-powered. It
requires 24 Vac power from the HVAC
equipment at terminals RH/RC and C.
Product Number
RDY2000
Required Tools
• No. 1 Phillips screwdriver
• 1/8” flat-blade screwdriver
• Drill with 1/8" drill bit
Expected Installation Time
15 minutes
The RDY2000 is an advanced controller
designed to be installed by professional
HVAC technicians. Installation by nonqualified personnel may result in degraded
system efficiency, occupant discomfort, or
equipment damage.
Prerequisites
• All work must be performed in accordance
with applicable codes and standards.
• Use 18 gauge thermostat wire for equipment
connections.
• 22 gauge shielded cable is recommended
for remote sensor wiring. Do not exceed 150
feet.
• To replace an existing thermostat, verify if
24 Vac is present between the RH/RC and
C terminals.
• Turn off power to the HVAC equipment
before attempting to remove the existing
thermostat.
• Record wiring connections to existing
thermostat terminals.
• Remove the existing thermostat before
proceeding.
Caution Notations
data may occur if you do not
follow the procedures as
Item Number 129-905, Rev. EA Page 1 of 18
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Installation
1. Install the thermostat base plate.
a. Feed the existing wires through the opening
in the base plate.
b. Secure the base plate to the mounting
surface using supplied hardware.
Document No. 129-905
Enables adustment of temperature
cooling setpoint if in Cooling mode.
Enables fan relay to be controlled
to be on continuously (ON).
Enables manual changeover
control functions.
Enables Scheduler, Time/Date, and
and fault messages.
Installation Instructions
March 26, 2015
NOTE: Ensure that the UP ar ro ws embossed
on the base plate are pointed upward.
Figure 2. Thermostat Base Plate.
NOTE:
If 24 Vac was verified as being present
at the thermostat wires (see
Prerequisites), sk ip Step 2 and proceed
to Step 3.
2. If 24 Vac is not present at the thermostat:
a. Locate the 24 Vac transformer or 24 Vac on
the terminal strip on the HVAC unit. Attach a
thermostat wire to the 24 Vac source. See
the HVAC equipment schematics to verify
the correct terminals.
b. Attach the other end of the unused wire to
the thermostat RH or RC terminal.
c. Verify that 24 Vac is present between the
RH/RC and C terminals.
3. Attach the existing wires to the appropriate
terminals on the thermostat base plate. See
Wiring Diagrams, Figure 4 and Figure 5.
Optional: If using Auxiliary Inputs 1 to 4 or
configurable outputs 1 to 3, use setup
parameters P301 to P320 to set functionality.
4. For systems with dual transformers, do the
following; otherwise, proceed to Step 5:
If separate transformers are used for heating
and cooling systems, connect 24 Vac from the
cooling system to RC, and 24 Vac from the
heating system to RH. Remove Jumper RHRC.
Optional: Auxiliary Output 3 can be changed to
a dry (unpowered) contact by removing Jumper
RC-C3 See Wiring Diagrams, Figure 6.
5. Attach thermostat to the base plate by engagi ng
tabs at the top and rotating the thermostat
downward until it is securely seated on the base
plate.
6. Secure the thermostat to the base plate with the
Phillips screws (provided), using the holes at
the bottom of the housing.
The installation is now complete. Restore power,
and continue to Thermostat Setup.
Thermostat Setup
Figure 3. Thermostat Display.
Thermostat Display
Navigation Bar
Only one function can be selected at a time. The
small bar (cursor) below the function icon indicates
that a function is selected. Pressing an icon twice
navigates back to the Main screen.
A double bar cursor below the Settings icon [
indicates that you are in Programming mode.
The navigation bar at the bottom of the display
consists of four function icons.
Table 1. Navigation Bar Icons.
Icon Name Purpose
and humidity (if applicable)
Setpoint
Selector
Settings
Fan
Control
Mode
setpoints. Unit will display heating
setpoint if in Heating mode or
as needed by thermostat (AUTO) or
between Heating and Cooling
mode. AUTO will enable the
thermostat to automatically switch
between heating and cooling mode
as required. OFF will disable all
Installer Set Up configuration. Also
enables access to service reminder
]
Page 2 of 18 Siemens Industry, Inc.
Document No. 129-905
Space is occupied,
Sensor.
Unit is running on the
local schedule.
The Scheduler is being
control.
Droplet and (+) indicates
not appear.
Economizer Enable/
Ventilation relay is on.
The system is actively in
cooling mode.
The system is actively in
heating mode.
Each segment
heating or cooling.
Auxiliary heating stage:
2=Stage 2
Installation Instructions
March 26, 2015
Status Bar
The status bar at the top of the display consists of
11 icons.
Table 2. Status Bar Icons.
Icon Name Meaning
Occupied
Keypad Lock Keypad is locked.
Scheduler
Override
Humidity
Control
Indicator
Fan Fan relay is on.
based on Schedule
and/or Occupancy
overridden by local
humidification relay is on.
Droplet and (-) indicates
dehumidific ation relay is
on. If neither relay is on,
the water droplet does
Service Reminders and Fault Messages
• Service reminders appear at the right side of the
screen:
– SERVICE UV LAMP
– SERVICE HUMIDIFIER
– SERVICE AIR FILTER
They are determined by the timer set in the Installer
Setup Menu, and can be cleared by pressing the
Settings icon [
], and then SERVICE. See
Clearing Service Reminders.
• Active fault messages appear at the left side of
the home screen:
– CONNECTION LOST (Not applicable to this
model)
– DEMAND RESPONSE (Not applicable to
this model)
– SERVICE REQUIRED (See Viewing Fault
Messages)
Fault messages are automatically cleared when the
root cause of the failure is resolved.
Fresh Air
Cool Mode
Heat Mode
Heating/Cooling
Stages
Auxiliary
Heating
represents one stage of
AUX=Stage 1: Aux
Siemens Industry, Inc.
Page 3 of 18
Document No. 129-905
Installation Instructions
March 26, 2015
Wiring Diagrams
Figure 4. Wiring Schematic, Conventional System.
Page 4 of 18 Siemens Industry, Inc.
Document No. 129-905
Installation Instructions
March 26, 2015
Siemens Industry, Inc.
Figure 5. Wiring Schematic, Heat Pump.
Figure 6. Wiring Schematic, Aux Output 3.
Page 5 of 18
Document No. 129-905
Installation Instructions
March 26, 2015
Set-up Wizard
When the unit is powered up for the first time,
WIZARD displays. This tool is used to program the
basic system parameters. Additional parameters can
be accessed directly via the Installer/Ex per t Set-up
menus.
NOTE: The thermostat will not start the control
sequence until the Set-up Wizard is
complete.
1. Press WIZARD to access the menu.
2. Press + or – to change parameter settings, and
then use left and right arrows to select the
additional parameters.
3. After verifying all parameters, press Confirm to
save and complete.
4. INSTALLER displays. If setup is complete,
press the Settings icon [
Wizard. If further setup is needed, continue to
Step 6.
5. Press INSTALLER to access the Installer Menu
and more detailed setup. See Table 3 through
Table 7 for all parameter descriptions.
6. Use the space provided in Table 15 to record
modified parameter settings.
7. Press the Settings icon [
exit setup.
Programming Temperature Setpoints
1. Touch the center of the Home screen to access
the room temperature screen. Use the left []
and right [] arrows adjacent to the text line to
display the room temperature and humidity.
] to exit the Set-up
] when finished to
NOTE: If the screen is not touched for 10
seconds, the unit returns to the Home
screen.
Programming Time and Date
1. Touch the center of the Home screen.
2. Press the Settings icon [
]. SCHEDULER
displays.
3. Use the left [] and right [] arrows to access
the Time menu. Press TIME. Press the two-digit
hour display to change the hour, or press the
two-digit minute display to change the minutes.
Press the left arrow to decrease the value, and
the right arrow to increase the value.
4. Press the Settings icon [
] to save.
5. Use the left [] and right [] arrows to access
the Date menu. Press DATE. Use the arrows to
select the month and year; use +/- to set the
date.
6. Press the Settings icon [
] to save.
Installer Menu
1. Touch the center of the Home screen.
2. Press the Settings icon [
]. SCHEDULER
displays.
3. Press the left arrow [].
4. Press INSTALLER.
5. Using the lower left [] and right [] arrows,
enter the password.
6. Press PASSWORD to accept the password.
2. Touch the Setpoint icon [
] of the screen to
access room temperature and humidity
setpoints.
NOTE: Only the setpoints in the current mode
display and can be modified. For
instance, if the thermostat is in heating
mode, only the heating setpoint
displays and can be modified. If the
thermostat is in AUTO mode, both the
heating and cooling setpoints will be
displayed and can be modified.
3. Use the left [] and right [] arrows to access
the different setpoints, and the + and – icons to
adjust the setpoints.
4. Touch the center of the screen to exit Setpoint
Programming.
Page 6 of 18
Siemens Industry, Inc.
NOTE: The Installer Level d ef ault pass wor d is
00:00
7. Press the Settings icon [
] to accept
changes and return the unit to the Home
screen.
NOTE: If you do not provide input, the thermostat
will automatically exit the Installer menu and
resume normal system control after five
minutes.
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