Manuals / Carrier / Household Appliance / Electric Heater

Carrier 48P2 TB201, MBB J8, a48-8481 a48-8478, Heat Interlock Relay Wiring, a48-8477, a48-8479

Models: P4 48P2 P3 P5030-100

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a48-8481

RCB					13
					13

J8					14
J8					14
RELAY 5
				15

a48-8481

a48-8478

10

9

Fig. 74 — Heat Interlock Relay Wiring

	6
FIELD INSTALLED (FIELD
SUPPLIED) JUMPER WHEN
ENTHALPY SWITCH NOT USED	5

Fig. 75 — Outdoor Air Enthalpy Switch Wiring

a48-8477

RCB

J4

TB201

8

7

a48-8479

Fig. 76 — CO2 Space Sensor Wiring

FILTER STATUS

a48-8480

Fig. 77 — Filter Status Wiring

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MBB J8

MBB

J8

Image 70

Carrier 48P2 TB201, MBB J8, a48-8481 a48-8478, Heat Interlock Relay Wiring, Outdoor Air Enthalpy Switch Wiring, a48-8477

Contents

SAFETY CONSIDERATIONS Installation InstructionsCONTENTS GENERALStep 6 - Install Field-FabricatedDuctwork INSTALLATIONStep 5 - Install Curb Gasketing Step 1 - Perform Jobsite Survey - CompleteTable 1A - Physical Data 48P2,P3,P4,P5030-050 Table 1A - Physical Data 48P2,P3,P4,P5030-050cont Table 1B - Physical Data 48P2,P3,P4,P5055-070 Table 1C - Physical Data 48P2,P3,P4,P5075-100 Table 1C - Physical Data 48P2,P3,P4,P5075-100cont Table 4 - Optional Humidi-MiZer Coil DataTable 6 - Supply Fan Drive Data Table 7 - Power Exhaust Fan Drive Data Table 9 - Optional Return Fan Drive DataFig. 1 - Roof Curb - Sizes Fig. 2 - Roof Curb - Sizes Fig. 3 - Roof Curb - Sizes Page Page 9 3/4 CONDENSER END SUPPORT4 REF X NO GASKETWith field-suppliedfittings and pipe sections, plumb the pri- mary condensate drain to the 2-in.FPT connector on the base rail. Use a trap height of at least 4-in.for size 030-070units and 7-in.for size 075-100units. See Fig. 23 and 24. Install with a height dimension of at least 2-in.from the top of the exit pipe from the trap section to the bottom of the connector. Apply a bead of RTV or similar sealant around the pipe joint at the con- nector in the base rail a48-8455 ALL PANELS MUST BE IN PLACE WHEN RIGGINGCAUTION - NOTICE TO RIGGERS UNITSCAUTION - NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE WHEN RIGGINGWEIGHT a48-845648P2,P3,P4,P5 UNITS Locate the four 11/4-in.drain coupling assemblies and mounting screws shipped in a bag taped to the basepan in the supply fan section, located behind the access panel marked FAN SECTION. The drain couplings are a 10-gageplate with a 11/4 in. half coupling welded to the plate a48-8613 a48-8614 a48-8615 a48-8616 a48-8617 a48-8618 a48-8619 a48-8620 a48-8621 a48-8622 Location Curb Mount a48457Fig. 25 - Secondary Condensate Drain Fig. 23 - Primary Drain Connectiona48-8459 Fig. 28 - Outdoor Air Hood Installation SizesInstallation Sizes Fig. 27 - Secondary Drain Seal PlateFig. 32 - 25% Outdoor-AirHood Location Step 10 - Install Economizer Hoods UnitsInstallation Sizes Fig. 33 - Economizer Outdoor-AirHoodFig. 37 - Large Economizer Hood Assembly a48-8462Step 11 - Route Field Wiring Step 12 - Make Field Electrical Connectionsa48-8465 a48-8463 a48-8464Fig. 39 - Disconnect Location - Size 040-060Units Fig. 40 - Disconnect Location - Size 070-100Unitsfor Factory-InstalledDisconnect Fig. 41 - Field Power Wiring ConnectionsFig. 43 - Field Power Wiring Connections a48-8467VOLTAGE VOLTAGE VOLTAGE VOLTAGE 174.0/171.8 70.8 225.4/223.2 78.1 Page Page Page VOLTAGE 14.0 27.0 208.4 14.0 27.0 219.8 14.0 27.0 Fig. 44 - Auxiliary Control Box Location Sizes Fig. 47 - Auxiliary Control Box Details Fig. 45 - Auxiliary Control Box Location SizesFig. 46 - Auxiliary Control Box Details SizesFig. 49 - Shipping Brackets Size 030-050Units Fig. 48 - Auxiliary Control Box DetailsSize 075-100Units with Optional Return Fan Fig. 50 — Shipping Brackets Size 055-070UnitsFig. 51 - Shipping Brackets Sizes Fig. 52 - Optional Return Fan Shipping BracketsFig. 55 - Flue/Inlet Hood Locations, Sizes Fig. 53 - Gas Piping DetailsFig. 54 - Flue/Inlet Hood Locations, 030-050Units Low Heat, Vertical Supply UnitsFig. 56 - Flue/Inlet Hood Locations, Sizes a48-8471a48-8584 Fig. 58 - Baffle Location, 030-050Unitsa48-8587 Fig. 61 - Flue Outlet HoodFig. 60 - Baffle Locations, Sizes Horizontal Supply Unitsa48-8588 Fig. 65 - Inlet Hood Assembly 6-in.and 14-inInstallation Fig. 63 - Flue Deflector Baffle Curve-TypeFig. 68 - Air Baffle 14-in Fig. 67 - Inlet Hood Assembly 30-ina48-8473 a48-8590a48-8560 a48-8561Fig. 70 - Wind Baffle Details CONTROLS INSTALLATION Fig. 73 - Space Temperature Averaging Wiring Fig. 72 - T55 or T56 WiringFig. 71 - Field Control Thermostat Wiring a48-8474TB201Fig. 76 - CO2 Space Sensor Wiring Fig. 74 - Heat Interlock Relay WiringFig. 75 - Outdoor Air Enthalpy Switch Wiring Fig. 77 - Filter Status WiringRED BRN Fig. 78 - Fan Status Switch WiringFig. 80 - Return Air CO2 Sensor Wiring a48-8482TB201 Fig. 81 - Return Air Smoke Detector WiringFig. 82 - Fire Shutdown Wiring FIRE SHUTDOWNFig. 84 - CCN Connections Carrier Comfort Network CCN Interfacea48-8487 Table 28 - CCN Connection ApprovedOptional UPC Open Installation Table 29 - MS/TP Wiring Recommendationsturning the supply fan off See Fig. 82 for wiringFig. 85 - UPC Open Controller opening the economizer option requiredFig. 86 - BT485 Installation Fig. 86 - Open System Network WiringTable 31 - Smoke Control Modes