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Carrier 50VT-A Small Cabinet, Electric Heat Pressure Drop Table in. W.C, Large Cabinet, 50VT--A

Models: 50VT-A

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Small Cabinet: 24-36

															50VT-- A

						Table 7 – Horizontal and Downflow Discharge Wet Coil Pressure Drop (IN. W.C.)
	UNIT SIZE									STANDARD CFM (SCFM)
										STANDARD CFM (SCFM)

		600	700	800	900		1000	1100	1200	1300	1400	1500	1600		1700		1800		1900	2000	2100	2200
	24	0.030	0.037	0.044	0.053		0.063	-	-	-	-	-	-		-		-		-	-	-	-
	30	-	-	-	0.053		0.063	0.072	0.081	0.105	-	-	-		-		-		-	-	-	-
	36	-	-	-	-		0.045	0.050	0.060	0.065	0.075	0.080	0.090		0.094		0.110		-	-	-	-
	42	-	-	-	-		0.045	0.050	0.060	0.065	0.075	0.080	0.090		0.094		0.110		-	-	-	-
	48	-	-	-	-		-	-	-	-	-	0.060	0.065		0.007		0.077		0.085	0.100	0.115	0.125
	60	-	-	-	-		-	-	-	-	-	0.060	0.065		0.007		0.077		0.085	0.100	0.115	0.125

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Table 8 – Horizontal and Downflow Economizer with 1-in. Filter Pressure Drop (IN. W.C.)

DOWNFLOW ECONOMIZER +	COOLING															STANDARD CFM (SCFM)
INCLUDED FILTERS	TONS	600		700		800		900		1000		1100		1200		1300		1400		1500		1600		1700		1800		1900		2000		2100		2200
INCLUDED FILTERS	TONS	600		700		800		900		1000		1100		1200		1300		1400		1500		1600		1700		1800		1900		2000		2100		2200

600-1400 cfm	2.0, 2.5	0.07		0.08		0.10		0.14		0.17		0.21		0.25		0.31		0.35		-		-		-		-		-		-		-		-
(12x20x1+12x20x1)	2.0, 2.5	0.07		0.08		0.10		0.14		0.17		0.21		0.25		0.31		0.35		-		-		-		-		-		-		-		-
(12x20x1+12x20x1)

1200-1800 cfm	3.0, 3.5	-		-		-		-		-		-		0.10		0.12		0.13		0.15		0.17		0.19		0.22		-		-		-		-
(16x24x1+14x24x1)	3.0, 3.5	-		-		-		-		-		-		0.10		0.12		0.13		0.15		0.17		0.19		0.22		-		-		-		-
(16x24x1+14x24x1)

1500-2200 cfm	4.0, 5.0	-		-		-		-		-		-		-		-		-		0.10		0.12		0.13		0.15		0.17		0.18		0.20		0.23
(16x24x1+18x24x1)	4.0, 5.0	-		-		-		-		-		-		-		-		-		0.10		0.12		0.13		0.15		0.17		0.18		0.20		0.23
(16x24x1+18x24x1)

Table 9 – Electric Heat Pressure Drop Table (in. W.C.)

Small Cabinet: 24-36

	STATIC						STANDARD CFM (SCFM)
							STANDARD CFM (SCFM)

	5kw	500	600	700	800	900	1000	1100	1200	1300	1400	1500	1600
	5kw	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.02	0.04	0.06	0.07
	7.5 kw	0.00	0.00	0.00	0.00	0.00	0.00	0.02	0.03	0.05	0.07	0.08	0.09
	10 kw	0.00	0.00	0.00	0.00	0.00	0.02	0.04	0.06	0.07	0.09	0.10	0.11
	15 kw	0.00	0.00	0.00	0.02	0.04	0.06	0.08	0.10	0.12	0.14	0.16	0.18
	20 kw	0.00	0.00	0.02	0.04	0.06	0.08	0.09	0.11	0.13	0.15	0.17	0.19

Electric Heat Pressure Drop Table (in. W.C.)

Large Cabinet 42-60

	STATIC							STANDARD CFM (SCFM)
	STATIC							STANDARD CFM (SCFM)
	5kw	1100	1200	1300	1400	1500	1600	1700	1800	1900	2000	2100	2200	2300	2400	2500
	5kw	0.00	0.00	0.00	0.01	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.10	0.11	0.12
	7.5 kw	0.00	0.00	0.01	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.10	0.11	0.12	0.13
	10 kw	0.00	0.00	0.01	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.10	0.11	0.12	0.13
	15 kw	0.00	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.10	0.11	0.12	0.13	0.14	0.15
	20 kw	0.02	0.03	0.04	0.05	0.06	0.07	0.08	0.09	0.10	0.11	0.12	0.13	0.14	0.15	0.16

Image 22

Carrier 50VT-A Small Cabinet, Electric Heat Pressure Drop Table in. W.C, Large Cabinet, 50VT--A, Static, Standard Cfm Scfm

Contents

Fig. 1 - Unit 50VT-A TABLE OF CONTENTSSAFETY CONSIDERATIONS Installation InstructionsINTRODUCTION RECEIVING AND INSTALLATIONInstallation on older “G” series roof curbs Step 1 - Check Equipment50VT--A Fig. 2 - 50VT-A24-30Unit DimensionsA09410 50VT--A Fig. 3 - 50VT-A36-60Unit DimensionsA09411 UNIT PLACEMENT ON COMMON CURB Fig. 4 - Roof Curb DimensionsLARGE CURB 50VT--AInspection Fig. 5 - Rigging WeightsStep 4 - Rig and Place Unit Rigging/Lifting of Unit See FigPERSONAL INJURY HAZARD Step 5 - Select and Install DuctworkCONFIGURING UNITS FOR DOWNFLOW VERTICAL DISCHARGE Fig. 6 - Supply and Return Duct OpeningStep 6 - Provide for Condensate Disposal Step 7 - Install Electrical ConnectionsHigh-VoltageConnections Fig. 7 - Unit Leveling TolerancesAccessory Electric Heaters Installation Special Procedures for 208-VOperationControl Voltage Connections Standard ConnectionsINDOOR THERMOSTAT RETURN AIR FROM POWER SOURCE Fig. 11 - Typical InstallationTable 1 - Physical Data - Unit 50VT-A 50VT--A50VT--A A1100250VT--A A1100150VT A A1100650VT--A A1100550VT--A Fig. 14 - Connection Wiring DiagramA10195 Fig. 14 Cont. - Ladder Wiring Diagram 50VT--AStep 1 - Check for Refrigerant Leaks Step 2 - Start-UpAdjustmentsSTART-UP Checking Cooling and Heating Control OperationUNIT OPERATION HAZARD Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments 50VT--AContinuous Fan Operation HPS - High Pressure SwitchLCS – Loss of Charge Switch AccuraterMetering De viceDefrost Step 3 - Defrost ControlQuiet Shift Fig. 16 - Interface Fan Board IFB50VT--A UnitLarge Cabinet Small CabinetElectric Heat Pressure Drop Table in. W.C 50VT--AIndoor Blower and Motor MAINTENANCEStep 1 - Air Filter PERSONAL INJURY AND UNIT DAMAGE HAZARD50VT--A Fig. 18 - Cooling Charging Table-SubcoolingA09412 Page Step 3 - Outdoor Fan Step 4 - Electrical Controls and WiringFig. 21 - Unit Access Panels Step 5 - Refrigerant CircuitStep 10 - High-PressureSwitch Step 8 - Pressure SwitchesStep 9 - Loss of Charge Switch Synthetic Roof Precautionary ProcedureLoss of Charge Switch TROUBLESHOOTINGSTART-UPCHECKLIST Step 13 - System InformationPURONR R-410AQUICK REFERENCE GUIDE 50VT--ATable 10 - Troubleshooting Chart 50VT--AI. PRELIMINARY INFORMATION MODEL NO TEMPERATURESRemove and Store in Job Files PRESSURESEdition Date 01/11 50VT--ACatalog No 50VT---09SI Replaces 50VT---08SI