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KMC Controls BAC-1xx63 Series, Installation Manual

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KMC Controls BAC-1xx63 Series Installation Manual Download Page 6

BAC-1xx63 Series (6 Relays, 3 Analog Outputs)   

6 

Installation Guide

STE-1416 Duct Averaging Temp. Sensor

MEP-5372/7252/7552/7852 Fail-Safe Actuators

XEE-6311-075 or XEE-6311-100 Transformer

STE-1451 Outside Air Temp. Sensor

NOTE: WIRE TO “O” TERMINAL IF

REVERSING VALVE IS 
ENERGIZED IN COOLING 
MODE; WIRE TO “B” 
TERMINAL IF REVERSING 
VALVE IS ENERGIZED IN 
HEATING MODE.

HPU LAYOUT

CSE-1102 Air Differential 

Pressure Switch

NOTE: EITHER  FAN STATUS (FST) OR 

DISCHARGE AIR TEMP (DAT) CAN 
BE USED ON IN2, BUT NOT BOTH.

STE-1402 Duct 
Sensor, Type III

Heat Pump Unit (HPU)— 

1 or 2 Compressors with Auxiliary and Emergency Heat

Output 

Terminals

Typical 

Terminal 

Codes

HPU Output Connections

BACnet 

Objects

        Analog 9

Outside Air Damper (OAD/RTD)*

AO9

    GND

Ground 

(for analog output terminals 7–9)

        Analog 8

(AO8)

 

        Analog 7

(AO7)

        Relay 6

W2/E

Emergency Heat (Optional)

BO6

    SC 4–6

R

24 VAC (for relay terminals 4–6)

        Relay 5

W

Auxiliary Heat (Optional)

BO5

        Relay 4

Y2

Compressor 2 (Optional)

BO4

        Relay 3

Y1

Compressor 1

BO3

    SC 1–3

R

24 VAC (for relay terminals 1–3)

        Relay 2

O/B

Reversing Valve 

(see O/B Note in schematic)

BO2

        Relay 1

G

Fan

BO1

 *If optional Outside Air Damper is used, must also have MAT/OAT inputs.

Input Terminals

HPU Input Connections

BACnet Objects

       IN4

Opt. Outside Air Temp. (OAT)*

AI4

       IN3

Opt. Mixed Air Temp. (MAT)*

AI3

     GND

Ground

 

       IN2

Optional FST or DAT**

AI2

  *When using optional Outside Air Damper, must also have MAT/OAT 

   inputs (typically 10K, Type III thermistors). Ensure pull-up resistor 

   switch positions are set properly—see Illustration 3 on page 2.

**Fan Status (FST) or Discharge Air Temperature (DAT) is an optional, 

   selectable input. Ensure pull-up resistor switch positions are set 

   properly (10K position) for the relay, switch, or Type III thermistor.

NOTE:  Although 

typical 

terminal 

code letters 

are shown, 

check the 

schematics 

of your unit 

for wiring 

details.

 CAUTION

Relays are for Class-2 voltages (24 VAC) only. 
Do not connect line voltage to the relays!
Do not mistakenly connect 24 VAC to an 
analog output ground.

 

APPLICATION

DEGREES SCALE: °F

APP:

OPT: 1 STAGE
ADDITIONAL SETUP

HEAT PUMP

 

ADDITIONAL SETUP

AUX HEAT

DAMPER
FAN
HUMIDITY
SENSORS
VALVE

NOTE:  To see Humidity options in the Additional 

Setup menu, select an Aux. Heat option 

other than None (the default).

Summary of Contents for BAC-1xx63 Series

Page 1: ...t windows air vents and air circulation obstructions e g curtains furniture See the Application Guide for more information Additionally for a model with an occupancy sen sor option be sure to install it where it will have unobstructed view of the most typical traffic area see the Application Guide for more information If replacing an existing thermostat label wires as needed for reference when rem...

Page 2: ...six conductor and outputs e g 12 conduc tor is recommended Grounds for all the inputs can be combined on one wire CAUTION To avoid damage from ground loops and other communication issues in networked FlexStats correct phasing on MS TP network and power connections on ALL the networked controllers is critically important MS TP Wiring Connect the A terminals in parallel with all other A terminals on...

Page 3: ...plication Guide Output Connections Connect the device under control between the desired output terminal and the related SC Switched Com mon for relays or GND Ground for analog outputs terminal See Illustration 4 For the bank of three relays there is one Switched relay Common connec tion in place of the GND terminal used with analog outputs See Illustration 5 Relay 3 or 6 SC 1 3 or 4 6 Relay 2 or 5...

Page 4: ...ower Connection The FlexStat requires an external 24 volt AC power source Use a KMC Controls Class 2 transformer to supply power Connect the transformer s neutral lead to the 24 VAC Common C terminal and the AC phase lead to the 24 VAC Phase R terminal See Illustration 4 Power is applied to the FlexStat when the transformer is plugged in KMC Controls recommends powering only one con troller thermo...

Page 5: ...lso have MAT OAT inputs typically 10K Type III thermistors Ensure pull up resistor switch positions are set properly see Illustration 3 on page 2 Fan Status FST or Discharge Air Temperature DAT is an optional selectable input Ensure pull up resistor switch positions are set properly 10K position for the relay switch or Type III thermistor Output Terminals AHU Output Connections Modulating BACnet O...

Page 6: ...inals 1 3 Relay 2 O B Reversing Valve see O B Note in schematic BO2 Relay 1 G Fan BO1 If optional Outside Air Damper is used must also have MAT OAT inputs Input Terminals HPU Input Connections BACnet Objects IN4 Opt Outside Air Temp OAT AI4 IN3 Opt Mixed Air Temp MAT AI3 GND Ground IN2 Optional FST or DAT AI2 When using optional Outside Air Damper must also have MAT OAT inputs typically 10K Type I...

Page 7: ...AT inputs typically 10K Type III thermistors Ensure pull up resistor switch positions are set properly see Illustration 3 on page 2 Fan Status FST or Discharge Air Temperature DAT is an optional selectable input Ensure pull up resistor switch positions are set properly 10K position for the relay switch or Type III thermistor Output Terminals Typical Terminal Codes RTU Output Connections 1 or 2 H a...

Page 8: ...DAT is an optional selectable input Ensure pull up resistor switch positions are set properly 10K position for the relay switch or Type III thermistor Output Terminals BAC 1xxx63C FCU Output Connections BACnet Objects 2 Pipe 4 Pipe Analog 9 AO9 GND Ground for analog output terminals 7 9 Analog 8 Heat Valve Proportional HTV AO8 Analog 7 Valve Proportional VLV Cool Valve Proportional CLV AO7 Relay 6...

Page 9: ... 6311 050 Transformer STE 1454 Temp Sensor 2 PIPE 2 POSITION FCU OPTION XEE 6311 050 Transformer VEP 1xxx0186 VEZ 4xxxxMBx Valve with 24 VAC Actuator BRN VEPSeries or RED VEZ Series BLU VEPSeries or BLK VEZ Series STE 1454 Temp Sensor NOTE See the FCU Overview section on the previous page for the 4 Pipe Modulating option and the general schematic Additional Resources The latest support files are a...

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