Manuals / Carrier / Household Appliance / Heating System

Carrier ZW, ZN030-105, Z6, 48ZT, Z8075-105, 48ZG Disconnect Location - Size 030-050Units

Models: Z6 48ZG 48ZT ZW Z8075-105 ZN030-105

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Fig. 39 — Disconnect Location — Size 030-050 Units

Units with Factory-Installed Disconnect — The factory- installed disconnect is an interlocking, door-type. The discon- nect handle locks the door when it is in the ON position. The disconnect handle must be in the OFF position to open the con- trol box door. The disconnect is located in a separate control box behind the control box door for all units. See Fig. 43.

All field wiring must comply with NEC and all local codes. Wire must be sized based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 44 for power wiring con- nections to the unit disconnect and equipment ground.

	DISCONNECT SIZE	QUANTITY...MAXIMUM WIRE SIZE
	DISCONNECT SIZE	(MCM)
		(MCM)
	200 Amps	1...300
	400 Amps	1...600
	600 Amps	2...600

Operating Voltage — Operating voltage to the compressor must be within the voltage range indicated on the unit name- plate. Voltages between phases must be balanced within 2%, and the current must be balanced within 10%. See Tables 7-16 for unit electrical data.

Use the following formula to determine the percentage of voltage imbalance.

Voltage Imbalance

=100 x max voltage deviation from average voltage average voltage

	Example: Supply voltage is 460-3-60.
	AB = 452 v
	BC = 464 v
	AC = 455 v
	Average Voltage =	455 + 464 + 455
	Average Voltage =	3
		3
	=	1371
		3
	=	457

Determine maximum deviation from average voltage:

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v. Determine percent voltage imbalance:

% Voltage Imbalance = 100 x	7
	457

= 1.53%

This amount of phase imbalance is satisfactory as it is be- low the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact local utility immediately.

Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

CAUTION

Use care when drilling into corner post to avoid damage to con- denser coil.

Fig. 39 — Disconnect Location — Size 030-050 Units

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Carrier ZW, ZN030-105, Z6, 48ZT, Z8075-105, 48ZG installation instructions Disconnect Location - Size 030-050Units

Contents

FOR YOUR SAFETY WHAT TO DO IF YOU SMELL GAS Installation InstructionsFOR YOUR SAFETY Install Outdoor HoodsCurb Gasketing INSTALLATIONField-FabricatedDuctwork Table 1A - Physical Data 48ZG,ZN030-050 Table 1A - Physical Data 48ZG,ZN030-050cont Table 1B - Physical Data 48ZG,ZN055-070 Table 1C - Physical Data 48ZG,ZN075-105 Table 1C - Physical Data 48ZG,ZN075-105cont Table 1D - Physical Data 48Z6,Z8075-105 Table 1D - Physical Data 48Z6,Z8075-105cont Table 1E - Physical Data 48ZT,ZW075-105 Includes hood Table 1E - Physical Data 48ZT,ZW075-105contTable 3 - Supply Fan Drive Data Table 4 - Power Exhaust Fan Drive DataFig. 1 - Roof Curb Sizes DIMENSIONUNIT TYPE UNIT SIZE22′-103/16″ 27′-911/16″29′-107/8″ 24′-113/8″Page Page Page 4 REF 9 3/4 CONDENSER END SUPPORTX NO GASKET DETAIL A-A UNIT WEIGHTECONOMIZER UNIT UNIT UNITS 48ZG,ZN PRIMARY DRAIN - The primary drain is a 2-in.NPT pipe connection located on the right-handside of the unit looking at the unit from the return air end. See Fig 24 → Page Page a48-8451 Page Page a48-8452 a48-8453 352 1-13/4 1933 6-41/8 POWERCONTROL 104.65a48-8454 Fig. 25 - Slab-MountedCondensate Fig. 24 - Primary Drain ConnectionDrain Piping Details Fig. 26 - Secondary Condensate Drain LocationInstallation Sizes Fig. 29 - Outdoor Air Hood Installation SizesInstallation Sizes Fan Outdoor-AirHood InstallationInstall Economizer Hoods 48ZT,ZW Units Field Electrical Connections Field Wire RoutingFig. 38 - Large Economizer Hood Assembly Fig. 39 - Disconnect Location - Size 030-050Units Fig. 40 - Disconnect Location - 48ZG,ZN055-105and 48Z6,Z8075-105Units Fig. 43 - Factory-InstalledDisconnect Location Fig. 42 - Field Power Wiring ConnectionsFig. 44 - Field Power Wiring Connections for Factory-InstalledDisconnectTable 7 - Electrical Data, 48ZG,ZN030 Units Table 8 - Electrical Data, 48ZG,ZN035 Units Table 9 - Electrical Data, 48ZG,ZN040 Units Table 10 - Electrical Data, 48ZG,ZN050 Units Table 11 - Electrical Data, 48ZG,ZN055 Units Table 12 - Electrical Data, 48ZG,ZN060 Units Table 13 - Electrical Data, 48ZG,ZN070 Units Table 14 - Electrical Data - 48ZG,ZN075-105Units Table 15 - Electrical Data - 48Z6,Z8075-105Units Table 16 - Electrical Data - 48ZT,ZW075-105Units COMPRESSOR Fig. 45 - Auxiliary Control Box Location Sizes Fig. 47 - Auxiliary Control Box Details Fig. 46 - Auxiliary Control Box Location SizesFig. 48 - Auxiliary Control Box Details SizesFig. 50 - Shipping Brackets Size 030-050Units Return/Exhaust-FanShipping Brackets 48Z6Fig. 51 - Shipping Brackets Size 055-070Units Fig. 54 - Foam TXV Shipping Blocks Fig. 52 - Shipping Brackets SizesFig. 53 - Return/Exhaust Fan Shipping Brackets Mounting Rail Assembly - Size 105 Units Mounting Rail Assembly — Size 105 UnitsFig. 56 - Front View of Compressor Fig. 57 - Rear View of CompressorTable 17 - 48Z Series Staged Gas Implementation Fig. 58 - Gas Piping DetailsFig. 60 - Flue/Inlet Hood Locations, 055-105Units Fig. 59 - Flue/Inlet Hood Locations, 030-060UnitsFig. 62 - Flue Deflector Baffle, 030-050and 075-105Units V-TypeFig. 65 - Inlet Hood Assembly Fig. 66 - Inlet Hood View Port Cover Installation055-105Units Only Table 18 - Flue and Inlet Hood UsageCONTROLS INSTALLATION Shielded Cables Table 20 - CCN Connection ApprovedFig. 68 - T55 or T56 Wiring Fig. 67 - Field Control Thermostat WiringTable 21 - Smoke Control Modes Fig. 69 - Space Temperature Averaging Wiring Fig. 71 - Outdoor Air Enthalpy Switch Wiring Fig. 70 - Heat Interlock Relay WiringFig. 72 - CO2 Space Sensor Wiring Fig. 73 - Filter Status WiringFig. 76 - Return Air CO2 Sensor Wiring Fig. 74 - Fan Status Switch WiringRCB J4 CEM J6Fig. 78 - Fire Shutdown Wiring Fig. 77 - Return Air Smoke Detector WiringMBB J6 RCB J4COMM Fig. 80 - CCN ConnectionsBOARD Page Catalog No Copyright 2009 Carrier CorporationForm 48Z-8SI 4-09