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®
COMFORT ZONING SYSTEM
T'stat Equpimt RC-RH
Y2
Jumper Z C1
Y1 3
HP Fnc
o
R Emergency n Op G Y1 Y2
Fnc HP
Heat e
W1
C
W2 DTO Fnc Ht 1
On WARNING!
C Off w/oF
Z C1 HOT parts
Off
On w/F
o
under this label
n Op
e
24 VAC C Rev W1
2 W2
Sensors RC G
B O Y2 Y1 W1 W2 RH
HP Duct Equipment Term.
G Y2 Y1 R W1W2 C
ZONEKIT2ZCAR
WeatherMaker® Two-Zone
Visit www.carrier.com
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → ind
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AIRFLOW 0 Step 2—Wiring insulateovertheactuatorassembly.Makesureinsulationdoesnot interfere with operation of actuator. Before insulating the ductwork, check for proper damper opera- tion.Apply24vacbetweenCOMandOPNtoopenthedamperand To prevent personal injury or possible equipment damage, COMandCLStoclosethedamper.(SeeFig.3.)Thedamperwill disconnect the power supply before routing wire. modulate counter-clockwise to open and clockwise to close. All wiring must comply with local, state, and natio
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1
ZONE
/ 2″ STEEL STRAP FLEXIBLE
DUCT DAMPER A95130 A95132 Fig. 5—Insulated Round Metal Ductwork Fig 8—Round Flexible Ductwork 4. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check your local codes.) (See Fig. 9.) NOTE: All zone dampers and ductwork must be properly sup- ported according to local codes or SMACNA standards. S-LOCK 1 / 2″ STEEL STRAP SUPPLY
AIR DUCT DRIVE ZONE
DAMPER A95133 A92478 Fig. 6—Rectangular Metal Ductwork Fig. 9—Insulated Round Flexible Ductwork 2. Properl
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Step 5—Install Barometric Bypass Damper • Energize HVAC equipment fan. • Energize heating or cooling equipment. The equipment may be NOTE: The barometric bypass damper is a critical part of the a compressor, furnace, strip heater, etc. WeatherMakerTwo-ZoneSystemforcontrolofminimumairflow • Set zone damper to the open or closed position based upon and noise reduction. It is recommended that the bypass be individual zone demand. installed. • Energizeadditionalstagesofheatingorcoolingifthethermosta
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Inautomaticchangeover,thezoningsystemworksonafirstcome If you encounter a situation where 1 zone seems to have poor first serve basis. If 1 zone is calling for heating and the other for ductwork,thentheWeatherMakerTwo-Zonesystemiscapableof cooling,thezonewhichsentitsdemandtotheI/Ocenterfirstwill reverting back to a fully open, constant-volume system. If this operate the equipment in that mode until that zone is satisfied. conditionpersists,itshouldalwaysbelookeduponasanindication of a HVAC probl
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3 B G H J A I 4 D K E C F Y2 Y1 2 Thermostat
R L CL M Zone
Zone 2 N W1 OP 1
W2 3 Damper C C CL Zone
1 OP 2
Damper C Duct G Y1 HP W1 C Rc Y2 O R Y1 W2 W2 24v Rh B Y2 W1 G Thermostat
Zone 1 Sensors 24 VAC
Equipment Power A97293 ZONE 1
ZONE 2
I/O CENTER CONNECTIONS I/O CENTER CONNECTIONS G Y2 Y1 R W1 W2 C Y2 Y1 R W1 W2 C †† †† * * G Y2 Y1 R W1 W2 C Y2 Y1 R W1 W2 C THERMOSTAT/SUBBASE
THERMOSTAT/SUBBASE
CONNECTIONS CONNECTIONS
ONLY HOOKUP "C" WHEN SUPPLIED BY THERMOSTAT
ONLY HOOKUP
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NON-PROGRAMMABLE
NON-PROGRAMMABLE
ELECTRONIC
TWO-ZONE BOARD
ELECTRONIC
TWO-ZONE BOARD
THERMOSTAT
THERMOSTAT
THERMOSTAT
THERMOSTAT
MODEL AC INPUT MODEL HP INPUT 24 VAC HOT R R 24 VAC HOT R R 24 VAC COMM C C 24 VAC COMM C C W W HEAT STAGE 1 /W1 W1 HEAT STAGE 1 /W1 W1 Y Y COOL STAGE 1 /Y2 Y1 COOL STAGE 1 /Y2 Y1 FAN G * G FAN G * G W2 Y2 O Y2 HEAT STAGE 2 /W2 W2 SINGLE-STAGE HEAT,
N/A Y1 SINGLE-STAGE COOL
N/A B SEE NOTES 1 AND 3 N/A L TWO-STAGE HEAT,
SINGLE-STAGE COOL
S1 OUTDOOR
S
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PROGRAMMABLE
PROGRAMMABLE
ELECTRONIC
TWO-ZONE BOARD
ELECTRONIC
TWO-ZONE BOARD
THERMOSTAT
THERMOSTAT
THERMOSTAT
THERMOSTAT
MODEL AC INPUT MODEL HP INPUT 24 VAC HOT R R 24 VAC HOT R R FAN G G FAN G G * * W W HEAT STAGE 1 /W1 W1 HEAT STAGE 1 /W1 W1 Y Y COOL STAGE 1 /Y2 Y1 COOL STAGE 1 /Y2 Y1 O O N/A /W2 W2 HEAT STAGE 2 /W2 W2 Y1 Y1 N/A /W2 N/A /W2 Y2 Y2 24 VAC COMM C C 24 VAC COMM C C N/A B N/A B N/A L N/A L S1 S1 OUTDOOR
SINGLE-STAGE HEAT,
OUTDOOR
TWO-STAGE HEAT,
SENSOR
SINGLE-STAGE
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TROUBLESHOOTING High Heating Temperature Trip Limit Setting — When DTO is On, temperature is sensed by duct This section contains information to assist you in troubleshooting B temperature sensor. When the duct temperature problemsanderrorsassociatedwiththeWeatherMakerTwo-Zone reachesthistemperaturesetting,theducttemperature system. See Table 2. optimizer is enabled. Step 1—System Diagram, Jumpers, and Switches If the LAT is exceeded then heating will turn off. →NOTE: For correct control board o
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Red LED—Displays ON when first-stage heat is Red LED—Displays ON when fan is energized. energized. I M Red LED—Displays ON when first-stage cooling is Red LED—Displays ON when second-stage heat energized. is energized. J N Red LED—Displays ON when second-stage cooling is J2 (Not Shown)—Cut for 50 hz operation. Lo- energized. cated under plastic housing approximately 1 in. K O above comprotec override. Red LED—Displays ON when reversing valve is ener- L gized. → Table 2—Troubleshooting LED CODES
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→Table 3 shows a temperature/ohm/voltage relationship to help aid in troubleshooting the WeatherMaker Two-Zone System. This table will evaluate both the Duct/HP temperature sensor operation. Use a digital multimeter to perform the following: Toverifyasensorisgood,disconnectbothleadsfromtheI/Oboardandmeasuretheresistancethroughthesensor.Matchohmreadingtotable andcomparetemperaturereadingontabletoambienttemperaturesurroundingsensor(Accuracyshouldbe ±5-10percent).Example:if10.92k ohms are measured,
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TWO-ZONE SYSTEM 2-STAGE OR
VARIABLE-SPEED
TWO-ZONE SYSTEM FURNACE RH
SINGLE-STAGE
FURNACE RH
R G
R G SINGLE-SPEED
SINGLE-SPEED
G
W2
AIR CONDITIONER AIR CONDITIONER G W2 W2
W1
W W/W1 W1
Y Y Y Y/Y2 Y1
C C C Y1
C Y2
Y2
O
O
B
B
RC A97296 RC → Fig. 15—Single-Stage Furnace A97297 With Single-Speed Air Conditioner → Fig. 16—Two-Stage or Variable-Speed Furnace With Single-Speed Air Conditioner TWO-ZONE SYSTEM SINGLE-SPEED
TWO-ZONE SYSTEM AIR CONDITIONER RH
SINGLE-SPEED
TYPICAL
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2-SPEED
2-SPEED
AIR CONDITIONER AIR CONDITIONER SINGLE-STAGE
2-STAGE OR
TWO-ZONE SYSTEM FURNACE VARIABLE-SPEED
TWO-ZONE SYSTEM FURNACE R RH
R R R RH
G G
G G
W W2
W2 C C W2
W/W1 W1
Y Y2 W1
Y/Y2 Y2 Y1 Y1
C Y1
C Y2
* Y Y2
Y1 O
O
B
See note 2 B
See notes 2 and 3 RC RC A97300 A97301 → Fig. 19—Single-Stage Furnace → Fig. 20—Two-Stage or Variable-Speed Furnace With 2-Speed Air Conditioner With 2-Speed Air Conditioner 2-SPEED
2-SPEED
AIR CONDITIONER AIR CONDITIONER TYPICAL
TWO-ZO
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SINGLE-SPEED
INTERFACE
SINGLE-STAGE
HEAT PUMP CONTROL FURNACE TWO-ZONE SYSTEM (KHAIC0101AAA) R RH
C R GT G G
GF R W2
RF W WF W1
Y E
Y1
W2 HP O
Y2
O HP O
OT Y 1 Y
B
2 HP 3
OUTDOOR
RC THERMOSTAT YT (KHAOT0301FST) E T C C See notes 4, 5, 6, and 7 A97304 → Fig. 23—Single-Stage Furnace With Single-Speed Heat Pump 2-STAGE OR
SINGLE-SPEED
INTERFACE
VARIABLE-SPEED
HEAT PUMP CONTROL FURNACE TWO-ZONE SYSTEM (KHAIC0101AAA) R RH
W2 R GT C G
GF G W2
RF R WF W1
W/W1 E
Y1
W2 HP Y/
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TWO-ZONE SYSTEM SINGLE-SPEED
TWO-ZONE SYSTEM SINGLE-SPEED
HEAT PUMP HEAT PUMP RH
FK4C
RH
TYPICAL
FAN COIL FAN COIL G
G
C C C C W2
W2
J1 JUMPER DH R R W1
R R W1
G Y1
G Y1
W2 W2 J2 JUMPER W1 Y2
W3 Y2
W2 W2 Y/Y2 * Y O
O
Y Y/Y2 O O * B
O O B
* L RC Y1 E * RC See notes 1 and 3 See note 1 Y1 * A97307 A97306 → Fig. 26—FK4C Fan Coil → Fig. 25—Typical Fan Coil With Single-Speed Heat Pump With Single-Speed Heat Pump 2-SPEED
HEAT PUMP 2-SPEED
HEAT PUMP 2-STAGE OR
SINGLE-STAGE
VARIAB
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2-SPEED
HEAT PUMP TYPICAL
2-SPEED
FAN COIL TWO-ZONE SYSTEM TWO-ZONE SYSTEM HEAT PUMP RH
R RH
R FK4C
FAN COIL C C G
G
C C G W2
W2
DH J1 JUMPER W2 W2 W1
W1
R R * Y2 Y/Y2 Y1
G Y1
* O O J2 JUMPER W1 W3 W3 Y2
Y2
W2 W2 * L O
O
Y1 Y1 * E B
B
Y2 Y/Y2 * Y1 O O RC Y1 RC W3 See notes 1, 2, 9, and 11 See notes 1, 2, 3, 9, and 11 A97310 A97311 →Fig.29—TypicalFanCoilWith2-SpeedHeatPump → Fig. 30—FK4C Fan Coil With 2-Speed Heat Pump → WIRING DIAGRAM NOTES 1. Refer to fan coil Installation I
