User Manual

Document No. 125-1009
Installation Instructions
April 27, 2020
Siemens Industry, Inc. Page 3 of 21
For RDY2000BN, NETA is non-inverting
input A (+) internally biased high, NETB is
inverting input B (-) internally biased low to
REF (↓), and external bias is not required.
a. Refer to the network plan for MS/TP wire
color code used for (+), (-), and (↓).
b. See Figure 8 for wiring thermostat at the
middle of line (two MS/TP cables) or at the
end of line (one MS/TP cable).
c. If thermostat at the middle of line, connect
terminals to two MS/TP cables with (+) to
NETA, (-) to NETB, and (↓) to REF.
Connect shield wires together and insulate.
d. If thermostat at the end of line, connect
terminals to one MS/TP cable and one end
of line terminator with (+) and terminator to
NETA, (-) and terminator to NETB, and (↓)
to REF. Verify shield is connected to earth
ground and insulate.
6. Attach thermostat to base plate by engaging
tabs at the top and rotating the thermostat
downward until securely seated on base plate.
7. Secure the thermostat to the base plate with the
Phillips screws (provided), using the holes at
the bottom of the housing.
8. Remove thermostat LCD screen cover.
9. Optional: store 2
nd
BACnet Serial Number
Label with the BACnet Energy Management
System commissioning documents.
The installation is now complete. Restore power,
and continue to Thermostat Setup.
Thermostat Setup
Figure 4. 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
Setpoint
Enables adustment of temperature
and humidity (if applicable)
setpoints. Unit will display heating
setpoint if in Heating mode or
cooling setpoint if in Cooling mode.
Fan
Control
Enables fan relay to be controlled
as needed by thermostat (AUTO) or
to be on continuously (ON).
Mode
Selector
Enables manual changeover
between Heating and Cooling
mode. AUTO will enable the
thermostat to automatically switch
between heating and cooling mode
as required. OFF will disable all
control functions.
Settings
Enables Scheduler, Time/Date, and
Installer Set Up configuration. Also
enables access to service reminder
and fault messages.
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.
Status Bar
The status bar at the top of the display consists of
11 icons.