Specifications

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KELE CONSTANT VOLUME ZONING SYSTEM
KTEC ZONING SYSTEM
TERMINAL IDENTIFICATION - KTEC2664Z
WIRING - KTEC2664Z
Y2 Y1 G RC CRH W1 W2 BPD DI1SP RS DSOSScom
Cool
Stage 2
Cool
Stage 1
Fan
Heat
Stage 1
Heat
Stage 2
0-10 VDC
By-Pass
Damper
Actuator
24V
Com
Transfo.
Discharge
Air Sensor
Return Air
Sensor
Outdoor
Sensor
Digital Input
Jumper
Dry contact
Thermostat internal contacts
System wiring
24 Vac
0-5 VDC
Static
Pressure
Transducer
Com
24V
Auxiliary
Output
Aux
BPD
Aux
SP DI1 RS SCom OS DS
G
Y1Y2
W2W1RH
CRC
KTEC2664Z Thermostat Terminals
Terminal Use Terminal
Identification
Description
1 – Cool2
Y2
Output for RTU cooling stage number 2.
2 – Cool1
Y1
Output for RTU cooling stage number 1.
3 - Fan
G
Output for the fan.
4 - 24 V ~ Hot
RC
Power supply of thermostat, hot side (Delivered from the RTU ).
5 - 0 V ~ Com
C
Power supply of thermostat, common side. Also used as reference for the
analog BPD output when used (Delivered from the RTU ).
6 – Heat Switch Leg
RH
24 VAC switched leg for the heating stages.
• If heating stages are part or RTU, install a jumper across RC & RH.
• If heating stages are part of a separate equipment with a different
power supply, feed external switched power leg through RH without
installing a jumper across RC & RH.
7 – Heat1
W1
Output for heating stage number 1.
8 – Heat2
W2
Output for heating stage number 2.
9 – By-pass damper
BPD
Local analog 0 - 10 VDC by-pass damper output.
10 – Aux output
AU
Auxiliary output used to disable economizer damper minimum position or
control lighting during unoccupied periods.
11 – Static pressure
SP
Local analog 0 – 5 VDC static pressure input.
12 - DI1
DI1
Configurable extra digital input. See parameter section for more information.
13 - RS
RS
Return air temperature sensor input. If sensor fails, thermostat will use the
on-board thermistor sensor to control if the communication is lost.
14 - Scom
Scom
Reference input for DI 1, RS, OS & DS.
15 - OS
BI2
Outside air temperature sensor input.
16 - DS
UI 3
Discharge air temperature sensor input.
BACnet Network Connections
BACnet Com
Com +
BACnet communication bus + connection.
BACnet Com
Com -
BACnet communication bus – connection.
Ref
Ref
Communication bus reference terminal.
o DO NOT USE FOR OTHER THAN SERVICING ISSUES
o
DO NOT WIRE SHIELD TO THAT POSITION
Y2 Y1 G RC CRH W1 W2 BPD DI1SP RS DSOSScom
Cool
Stage 2
Cool
Stage 1
Fan
Heat
Stage 1
Heat
Stage 2
0-10 VDC
By-Pass
Damper
Actuator
24V
Com
Transfo.
Discharge
Air Sensor
Return Air
Sensor
Outdoor
Sensor
Digital Input
Jumper
Dry contact
Thermostat internal contacts
System wiring
24 Vac
0-5 VDC
Static
Pressure
Transducer
Com
24V
Auxiliary
Output
Aux
BPD
Aux
SP DI1 RS SCom OS DS
G
Y1Y2
W2W1RH
CRC
KTEC2664Z Thermostat Terminals
Terminal Use Terminal
Identification
Description
1 – Cool2
Y2
Output for RTU cooling stage number 2.
2 – Cool1
Y1
Output for RTU cooling stage number 1.
3 - Fan
G
Output for the fan.
4 - 24 V ~ Hot
RC
Power supply of thermostat, hot side (Delivered from the RTU ).
5 - 0 V ~ Com
C
Power supply of thermostat, common side. Also used as reference for the
analog BPD output when used (Delivered from the RTU ).
6 – Heat Switch Leg
RH
24 VAC switched leg for the heating stages.
• If heating stages are part or RTU, install a jumper across RC & RH.
• If heating stages are part of a separate equipment with a different
power supply, feed external switched power leg through RH without
installing a jumper across RC & RH.
7 – Heat1
W1
Output for heating stage number 1.
8 – Heat2
W2
Output for heating stage number 2.
9 – By-pass damper
BPD
Local analog 0 - 10 VDC by-pass damper output.
10 – Aux output
AU
Auxiliary output used to disable economizer damper minimum position or
control lighting during unoccupied periods.
11 – Static pressure
SP
Local analog 0 – 5 VDC static pressure input.
12 - DI1
DI1
Configurable extra digital input. See parameter section for more information.
13 - RS
RS
Return air temperature sensor input. If sensor fails, thermostat will use the
on-board thermistor sensor to control if the communication is lost.
14 - Scom
Scom
Reference input for DI 1, RS, OS & DS.
15 - OS
BI2
Outside air temperature sensor input.
16 - DS
UI 3
Discharge air temperature sensor input.
BACnet Network Connections
BACnet Com
Com +
BACnet communication bus + connection.
BACnet Com
Com -
BACnet communication bus – connection.
Ref
Ref
Communication bus reference terminal.
o DO NOT USE FOR OTHER THAN SERVICING ISSUES
o DO NOT WIRE SHIELD TO THAT POSITION
March 2014