4
TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions
T
E
C
2
1
0
3
-2
_
W
ir
in
g
Y2
Y1
G
RC
C
RH
W1 W2
D1
D2
RS
Scom
5-pole left top connector
3-pole right top
connector
5-pole bottom connector
24 VAC
Thermostat Power
Y2
Y1
G
RC
C
If using the same power source
for the thermostat and heating
loads, install a jumper
across RC and RH.
Heat 1 Heat 2
RH
W1
W2
Fan
Cool 1
Energizes on a call for first stage cooling
Energizes on a call for second stage cooling
Energizes fan in accordance with the selected fan mode
24 VAC from equipment transformer
24 VAC (common) from equipment transformer
24 VAC for heating stages
Energizes on a call for first stage heating
Energizes on a call for second stage heating
Configurable digital input
Configurable digital input
Remote room sensor
Sensor common
Auxiliary/Outdoor air sensor
N2 Bus
Function
Y1
Y2
G
RC
C
RH
W1
W2
D1
D2
RS
Scom
OS
N2+, N2-, REF
Terminal
OS
D2
Scom
RS
D1
Remote
Room
Sensor
OS
REF
N2-
N2+
Auxiliary/Outdoor
Sensor
N2-
N2+
REF
Metasys, CPN,
NCM
Cool 2
Figure 5: TEC2103-2 Thermostat Wiring Schematic
Connecting the N2 Bus
To connect the N2 Bus:
1. Observe the polarity when connecting the N2 Bus
wires to the TEC2103-2 thermostat.
Note:
An End-of-Line (EOL) is not needed on the
N2 Bus at the TEC2103-2 thermostat. However,
one EOL is needed at the BAS (N30, Companion,
Network Control Module).
2. Continue this process for each TEC2103-2
thermostat using the daisy chain wiring method.
N2 Device Mapping
When adding the TEC2103-2 thermostat to the
Metasys system (Person-Machine Interface [PMI] and
Companion system), you must define the TEC2103-2
thermostat as a Vendor Device (VND). For the NCM,
except as noted in Table 1, Footnote c, do
not
direct
map any points. Run control of these points through
the Control System (CS) object. See the
Setting the
N2 Address (N2 addr)
section to set the address for
the thermostat.
