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Carrier 48AJ, 48EW, 48EY024-068, 48AW, 48EK LEGEND Typical Factory Wiring, Optional Field Wiring

Models: 48EJ 48AJ 48AK 48EK 48AY020-060 48AW 48EY024-068 48EW

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LEGEND

CC

VIA

VIB

PP

II

FM

F

R

RST

S1

S2

S3

CC

OUT

P24

LEGEND

Typical Factory Wiring

Optional Field Wiring

E-STOP

TWO-WIRE

TRANSDUCER

4-20mA

-+

FIRE SPEED

OVER-RIDE

Fig. 58 — Toshiba TOSVERT VF-S9 VFD Factory-Installed Jumpers

Table 14 — Carrier VFD (Toshiba TOSVERT VF-S9) Program Parameter Values

PARAMETER GROUP	COMMUNICATION NO.	DESCRIPTION	CARRIER DEFAULT SETTINGS
Basic Parameters
CNOd	0003	Command Mode Selection	0*
FNOd	0004	Frequency Setting Mode Selection	1*
Fr	0008	Forward/Reverse Run Selection	1*
ACC	0009	Acceleration Time 1	10.0 sec
dEC1	0010	Deceleration Time 1	10.0 sec
FH	0011	Maximum Frequency	60.0 Hz*
UL	0012	Upper Limit Frequency	60.0 Hz*
LL	0013	Lower Limit Frequency	10.0 Hz*
Pt	0015	V/f Control Mode Selection	1*
tHr	0041	Motor Electronic Thermal Protection Level 1	See Table 15*
Sr1	0018	Preset-Speed Operation Frequency 1	60.0 Hz*
Extended Parameters
F115	0115	Input Terminal Selection 5 (S2)	14*
F116	0116	Input Terminal Selection 6 (S3)	11*
Frequency Parameters
F201	0201	VIA/II Input Point 1 Setting	20%*
F202	0202	VIA/II Input Point 1 Frequency	0.0 Hz
F203	0203	VIA/II Input Point 2 Setting	100%
F204	0204	VIA/II Input Point 2 Frequency	60.0 Hz*
Operation Mode Parameters
F300	0300	PWM Carrier Frequency	4 KHz*
F301	0301	Auto-Restart Control Selection	3*
F302	0302	Regenerative Power Ride-through Control	1*
F303	0303	Retry Selection (Number of Times)	2*
F360	0360	PI Control	1*
F362	0362	Proportional Gain	0.30
F363	0363	Integral Gain	0.20

*These settings differ from the Toshiba defaults and are required for Carrier applications.

Table 15 — Motor Electronic Thermal Protection (tHr) for Toshiba TOSVERT VF-S9 VFD

MOTOR			STD EFFICIENCY			HIGH EFFICIENCY
HP	kW	IFM Letter*	230V Setting	380V Setting	460V Setting	IFM Letter*	230V Setting	460V Setting
5	3.73	A	83	77	83	L	90	83
7.5	5.60	B	80	88	84	M	80	84
10	7.46	C	85	75	86	N	85	88
15	11.19	D	81	98	79	P	81	79
20	14.92	E	94	—	87	Q	88	87

*IFM Letter refers to the 15th digit (Motor Option) of the unit model number.

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Carrier 48AJ, 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48EJ LEGEND Typical Factory Wiring, Optional Field Wiring

Contents

INSTALLATION Step 1 — Provide Unit Support CONTENTSSAFETY CONSIDERATIONS Step 11 — Position Power Exhaust/BarometricStep 4 — Make Unit Duct Connections Page Page Page NOTES Fig. 5 - Base Unit Dimensions - 48AJ,AK020-030 Fig. 6 — Base Unit Dimensions — 48AJ,AK035-050 Fig. 7 — Base Unit Dimensions — 48AJ,AK060 Fig. 8 — Base Unit Dimensions — 48AW,AY020-030 Fig. 9 — Base Unit Dimensions — 48AW,AY035-050 Fig. 10 — Base Unit Dimensions — 48W,AY060 Fig. 11 — Base Unit Dimensions — 48EJ,EK024-034 Fig. 12 — Base Unit Dimensions — 48EJ,EK038-048 Fig. 13 — Base Unit Dimensions — 48EJ,EK054-068 Fig. 14 — Base Unit Dimensions — 48EW,EY024-034 Fig. 15 — Base Unit Dimensions — 48EW,EY038-048 Fig. 16 — Base Unit Dimensions — 48EW,EY054-068 Fig. 17 — Rigging Information Fig. 17 — Rigging Information cont Table 1A — Physical Data — 48AJ,AK,AW,AY Units UNIT 48AJ,AK,AW,AY Table 1B — Physical Data — 48EJ,EK,EW,EY Units UNIT 48EJ,EK,EW,EY UNIT 48EJ,EK,EW,EY 48EJ,EK,EW,EY Units Table 2 — Operating Weights48AJ,AK,AW,AY Units Fig. 19 — Air Distribution — Thru-the-Side Table 3 — Evaporator Fan Motor DataFig. 18 — Air Distribution — Thru-the-Bottom Step 5 — Install Flue Hood Fig. 23 — Field Gas Piping Table 4 — 48A,E Series Staged Gas ImplementationTable 6 - Thermistor Designations Fig. 24 — Supply-AirThermistor Connections Fig. 25 — Indoor Air Quality Sensor Configuration Fig. 26 — Field Control Remote Start/StopStep 9 - Make Electrical Connections Fig. 27 — Control Board Diagram Table 7 — Electrical Data — 48AJ,AK,AW,AY Units UNIT SIZE 30.8/28.0 236.3/230.9 Table 8 — Electrical Data — 48EJ,EK,EW,EY Units 30.8 0.96 UNIT Fig. 28 - Field Power Wiring Connections LEGEND Thermostat Wiring CV Only- Install a Carrier-approvedaccessory thermostat assembly per current price pages according to the installation instructions included with the ac- cessory or these instructions. Locate the thermostat on a solid interior wall in the conditioned space to sense the average temperature LEGEND Wiring CV or VAV Units Fig. 32 — Field Control Thermostat WiringFig. 33 — Field Control Temperature Sensor Table 9 — CCN Connection Approved Shielded CablesFig. 35 — Field HIR Heat Interlock Relay Wiring Step 10 — Make Outdoor-AirInlet AdjustmentsFig. 34 - Space Temperature Averaging Wiring Right Side/Center Economizer Hood Shown Fig. 37 - Economizer Hood AssemblyFig. 36 — Adding Seal Strip to Top of Hood Sides Fig. 39 — Adding Seal Strip to Back of Hood Top Fig. 38 — Adding Seal Strip to Sides of Hood TopMounting Flange Fig. 40 — Adding Foam Strip to Cross MemberFig. 43 - Mounting Angle Without Tabs Attached to Filter Track AssemblyFilter Track Assembly Fig. 44 — Mounting Angle With Tabs Attached toSave screws Fig. 47 - Wiring Connections for Solid-StateEnthalpy Control HH57AC077 CONTROL POINT Fig. 49 - Economizer DetailsCONTROL CURVEFig. 51 - Pressure Transducer Locations 48AJ,AK,AW,AY060 and 48EJ,EK,EW,EY054-06848AJ,AK,AW,AY020-030and 48EJ,EK,EW,EY024-034 Fig. 52 - Motormaster III Control Baffle DetailsFig. 53A — Motormaster III Sensor Location Fig. 53C — Motormaster III Sensor Location Fig. 53B — Motormaster III Sensor Location48AJ,AK,AW,AY035 and 48EJ,EK,EW,EY038 48AJ,AK,AW,AY040, 050 and 48EJ,EK,EW,EY048Step 13 — Field Modifications Fig. 54 — Side Return Air ConversionSTART-UP Fig. 56 — Wiring Field-SuppliedUnloaders forConstant Volume Units Factory-InstalledJumpers Fig. 57 — Toshiba TOSVERT130-E3VFD13.Replace jumper across terminals ST and CC 13.Replace jumper across terminals R and CC LEGEND Typical Factory Wiring Optional Field WiringSee below for building pressure to signal level Table 17 — DIP Switch Configuration Table 18 — DIP Switch Factory Settings AIRFLOW AIRFLOW AIRFLOW 1.06 2.15 3.18 4.81 AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW Table 33 — Motor Limitations Table 34 — Air Quality LimitsSequence of Operation Table 35 — User Defined Set Points Table 36 - Software Control Link PointsThe Time Guard function maintains a minimum off time of 5 minutes, a minimum ON time of 10 seconds, and a minimum delay before starting the second compressor of 10 seconds Fig. 59 — Heat Interlock Relay Wiring Table 37 — Staged Gas System Components Table 38 — Stage Gas System Inputs/OutputsFig. 60 — Navigator Display Table 39 — Navigator Display Menu StructureOperation and Controlling Factors Fig. 61 — Space Temperature Reset WiringTable 40 — Occupied Heat and Morning Warm-Up Fig. 62 - Field-SuppliedSmoke Detector Wiring Units with 2 Compressors Table 41 — Smoke Control ModesTable 42 — Cooling Capacity Staging Table, CV Fig. 63 — Door Latch SERVICEFig. 64 — Spark Gap Adjustment Fig. 65 — Typical Gas Heating Section Fig. 66 — Gas Heat Section DetailsFig. 68 — Evaporator Fan Coupling Fig. 67 — Evaporator-FanAlignment and AdjustmentLubrication Evaporator-FanMotor Replacement Evaporator Fan Service and ReplacementBelt Tension Adjustment — To adjust belt tension Condenser-FanAdjustmentFig. 72 — Cooling Charging Chart Gas Valve AdjustmentFig. 71 — Cooling Charging Chart 48EJ,EK,EW,EY024-03448EJ,EK,EW,EY054-068 Fig. 73 — Cooling Charging ChartFig. 74 — Cooling Charging Chart 48AJ,AK,AW,AY020-060LEGEND for Fig. 77-83— Typical Wiring Schematics Protective DevicesTABLE 1A Fig. 78 — Typical 48EK VAV 24-VControl Circuit Fig. 79 — Typical CV 24-VControl Circuit Fig. 80 — Typical 48EK VAV 115-VControl Circuit Fig. 81 — Typical 48EJ CV 115-VControl Circuit Page Page TROUBLESHOOTING LPS - Low-PressureSwitch FPS — Freeze Protection SwitchHPS - High-PressureSwitch LEGENDcompressor LPS — Low-PressureSwitch LEGEND FPS — Freeze Protection SwitchHPS — High-PressureSwitch 8-Pass LPS — Low-PressureSwitch LEGEND FPS — Freeze Protection SwitchHPS — High-PressureSwitch TXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch LEGEND HPS - High-PressureSwitchLPS — Low-PressureSwitch TXV — Thermostatic Expansion ValveTXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch TXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch IGC — Integrated Gas Unit Controller Fig. 94 — IGC Control Heating and CoolingLEGEND IDM — Induced-DraftMotor Table 44 - IGC Control Board LED Alarms Table 45 — Control Board LED AlarmsPage SERVICE TRAINING CALL FOR FREE CATALOGPRE-START-UP START-UPCHECKLISTTEMPERATURES ELECTRICALGENERAL