Instruction/ maintenance manual of the product 48P2 Carrier
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Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 04-53480079-0 1 Printed in U .S.A. F orm 48P-4SI Pg 1 11-10 Replaces: 48P-3SI Installation Instr uctions CONTENTS Page GENERAL .
2 INST ALLA TION Step 1 — P erf orm Jobsite Survey — Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) (ANSI/NFP A [American National Stan- dards Institute/National Fire Protection Association] 70) for special installation requirements.
3 Table 1A — Physical Data 48P2,P3,P4,P503 0-050 LE GEND * 460-3-60 only . †See T ab le 7 — P o wer E xhaust F a n Driv e Data on pa ge 9 f or more i nf ormation.
4 Table 1A — Physical Data 48P2,P3,P4,P503 0-050 (cont) LE GEND * 460-3-60 only . †See T ab le 7 — P o wer E xhaust F an Driv e Data on pa ge 9 f or more in formation .
5 Table 1B — Physical Data 48P2,P3,P4,P505 5-070 LE GEND *See T ab le 7 — P o wer Ex haust F an Driv e Data o n page 9 f or mo re inf ormation. BASE U NIT 48P2,P 3,P4,P5055 48P2,P3,P4,P5 060 48P2,.
6 Table 1C — Physical Data 48P2,P3,P4,P507 5-100 LEGEND *See T abl e 3 — High-Capacity P o wer Exhaust Data f or more inf ormation. See T ab le 7 — P o wer Exhaust F an Dr iv e Data on page 9 f or more inf ormation.
7 Table 1C — Physical Data 48P2,P3,P4,P507 5-100 (cont) LEGEND *See T able 3 — High-Capacity P ower Exhaust Data f or more inf ormation. See T ab le 7 — P ow er Exhaust F an Driv e Data on page 9 f or more inf ormation.
8 Table 5 — Operating Weights of Options and Accessori es (lb) *Includes hood. Table 6 — Supply Fan Drive Data *Sizes 040,050 only . NO TE: P ar t numbers are Browning Manuf acturing Cor p .
9 Table 7 — Power Exhaust Fan Driv e Data *High-efficiency motor option. †Premium-efficiency motor option. **Applies to both motor options. NO TE: P ar t numbers are Browning Manuf acturing Cor p . ref erence. Table 8 — Optional High-Ca pacity Power Exhau st Fan Drive Data Table 9 — Optional Return Fan Dr ive Data TOT A L HP MO T OR QTY .
10 Fig. 1 — Roof Curb — Sizes 030-050.
11 Fig. 2 — Roof Curb — Sizes 055, 060.
12 Fig. 3 — Roof Curb — Sizes 070-1 00.
13 Fig. 4 — Condenser Sectio n Roof Curb (Sizes 070 and 075).
14 Fig. 5 — Condenser Section Roof Curb (Sizes 090 and 100).
15 9 3/4" "X"- NO GASKET 4 REF . DET AIL A-A A A "X" 4 1 3 2 CONDENSER END SUPPORT 5 5 Fig. 6 — Gasket Location on Roof Curb (Size 070-100 Unit s) Fig.
16 Step 8 — Connect Condensate Drain — The re are a total of five drain conne ctions required on each unit: one primary drain (on right-hand side of the unit) and four second- ary drains (two on each side of unit). PR IM ARY DR AI N — The primary drain is a 2-in.
17 4 8 ZZ501077 2.0 NO TE: Ri g with four cable s and s pread with tw o 95 inch (241 3 MM) s preader bar s . ALL P ANEL S MU S T BE IN PLA CE WHEN RIGGING. CAUTION - NOTICE TO RIGGERS: 1,2,3 4 5 LBS KGS IN MM IN MM IN M M 48P 2,3,4,5 B,D,H 48 P2, P3, P4, P5 030 6019 2730 170.
18 4 8 ZZ50107 8 2.0 NO TE: Ri g with f our cable s and s pread with tw o 95 inch (241 3 MM) s preader bar s . ALL P ANEL S MU S T BE IN PLA CE WHEN RIGGING. CAUTION - NOTICE TO RIGGERS: M M N I M M N I M M N I S G K S B L 5 4 3 , 2 , 1 50P 2,3,4,5 -,B,C 50 P2, P3, P4, P5 075 11921 5407 220.
19 3 2 A B 4 1 NO TE: The weight distrib ution and center of gra vity inf ormation include the impact of an economiz er , the larg est indoor f an mot or , and a VFD (variabl e frequency drive). On u nits with a ret urn fan or hig h-capacity po wer e xhaus t, the largest motors and VFD are also included.
20 Locate the four 1 1 / 4 -in. drain coupling assemblies and mounting screws (shipped in a bag taped to the b asepan in the supply fan section, located be hind the access panel marked F AN SECTION). The drain couplings are a 10-gage plate with a 1 1 / 4 in.
21 Fig. 12 — Base Unit Dime nsional Drawing — 48 P2,P3030,035 (Standard Ch assis Unit Shown) a48-8613.
22 Fig. 13 — Base Unit Dime nsional Drawing — 48 P4,P5030,035 (Standard Ch assis Unit Shown) a48-8614.
23 Fig. 14 — Base Unit Dimensional Dr awing — 48P2,P3040- 050 (Standard Chassi s Unit Shown) a48-8615.
24 Fig. 15 — Base Unit Dimensional Dr awing — 48P4,P5040- 050 (Standard Chassi s Unit Shown) a48-8616.
25 Fig. 16 — Base Unit Dime nsional Drawing — 48 P2,P3055,060 (Standard Ch assis Unit Shown) a48-8617.
26 Fig. 17 — Base Unit Dime nsional Drawing — 48 P4,P5055,060 (Standard Ch assis Unit Shown) a48-8618.
27 Fig. 18 — Base Unit Dimensiona l Drawing — 48P2,P3070 (Standard Chassi s Unit Shown) a48-8619.
28 Fig. 19 — Base Unit Dimensiona l Drawing — 48P4,P5070 (Standard Chassi s Unit Shown) a48-8620.
29 Fig. 20 — Base Unit Dimensi onal Drawing — 48P2,P3075-1 00 (Standard Chassis Uni t with Optional High- Capacity Power Exhaust Shown ) a48-8621.
30 Fig. 21 — Base Unit Dimensional Drawing — 48P4,P5075-10 0 (Standard Chassis Un it with Optional Return Fan Shown ) a48-8622.
31 A B Fig. 22 — Units with Op tional Extend ed Chassis — Location of Coil T rac ks AUXILIAR Y COIL LOCA TION (in.) UNIT SIZES DIST ANCE A HEIGHT B 030,035 123.0 6.6 040,050 156.8 6.6 055-070 200.4 6.6 075-100 200.4 6.6 075-100 with High- Capacity Po wer Exhaust 279.
32 Step 9 — Install Outdoor Hoods (Units without Optional High-Capacity P ower Exhaust) UNIT SIZES 030-050 25% Outdoor-Air Hoods (Units without Economizer Option) (Fig. 28) 1. Outdoor -air hoods are shipped bolted to the unit in a ship- ping position.
33 Step 10 — Install Economizer Hoods (Units with Optional High-Capacity P ower Exhaust) — The economizer uses a total of 4 outdoor intake hoods, 2 on each side of the unit. See Fig. 36. T wo small hoods (one per side) are factory-installed and are pivoted inside the unit chassis for shipment.
34 ACCESS DOOR PE VFD EXHAUST AIR LARGE ECONOMIZER HOOD LOCA TION AUXILIARY CONTROL BOX POWER EXHAUST ACCESS DOOR SMALL ECONOMIZER HOOD LOCA TION LEGEND PE VFD — P o wer Exhaust V ar iab le F requency Drive Fig.
35 Step 11 — Route Field Wiring UN IT SIZ E S 03 0- 06 0 — Field wiring can be brought into the unit through the basepan and roof curb or through the corner post in the side of the unit next to the control box. A 3 1 / 2 -in. FPT coupling for field power and a 3 / 4 -in.
36 RECOMMENDED FIELD- S UPPLIED DI S CONNECT LOCA TION CONTROL BO X CONTROL BO X RECOMMENDED FIELD- S UPPLIED DI S CONNECT LOCA TION Fig. 39 — Disconnect Locatio n — Size 040-060 Units CA UTION Use care when drilling in to cor ner post to av oid damage to con- denser coil.
37 23 13 12 1 1 22 21 DISCONNECT PER NEC EQUIP GND FIELD WIRE F ACT ORY WIRE F ACT OR Y -IN S T ALLED DI S CONNECT HANDLE LOCA TION F ACT OR Y -IN S T ALLED DI S CONNECT (HIDDEN) 21 11 22 12 2 3 1 3 DI S CONNECT PER NEC EQUIP GND TB1 Fig. 43 — Field Po wer Wiring Conne ctions for Factory-In stalled Disconne ct Fig.
38 Table 10 — Elec trical Data, 48P2,P3,P4,P5030 Uni ts VO L T AG E 3 PH, 60 Hz VO L T AG E RANGE COMPRESSOR CONDENSER F AN MOT OR EV APORA T OR F AN MOT OR PO WER EXHA UST PO WER SUPPL Y No. A1 No. B1 Min Max Qty RLA (ea) LRA (ea) Qty RLA (ea) LRA (ea) Qty FLA Hp FLA Qty Hp (ea) FLA (ea) MCA FUSE OR HA CR BRKR* 208/230 187 253 1 51.
39 Table 10 — Electri cal Data, 48 P2,P3,P4,P503 0 Units (cont) LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 1 (low heat) or 2 (high heat) comb ustion f an motors rat ed at 0.
40 Table 11 — Elec trical Data, 48P2,P3,P4,P5035 Uni ts VO LT AG E 3 PH, 60 Hz VO L T AG E RANGE COMPRESSOR CONDENSER FA N M O TO R EV APORA TOR F AN MO T OR PO WER EXHA UST PO WER SUPPL Y No. A1 No. B1 Min Max Qty RLA (ea) LRA (ea) Qty RLA (ea) LRA (ea) Qty FLA Hp FLA Qty Hp (ea) FLA (ea) MCA FUSE OR HA CR BRKR* 208/230 187 253 1 55.
41 Table 11 — Electri cal Data, 48 P2,P3,P4,P503 5 Units (cont) LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 1 (low heat) or 2 (high heat) comb ustion f an motors rat ed at 0.
42 Table 12 — Elec trical Data, 48P2,P3,P4,P5040 Uni ts VO L T AGE 3 PH, 60 Hz VO L T AG E RANGE COMPRESSOR CONDENSER F AN MOT OR EV APORA TOR F AN MOT OR PO WER EXHA UST PO WER SUPPL Y No. A1 No. B1 Min Max Qty RLA (ea) LRA (ea) Qty RLA (ea) LRA (ea) Qty FLA Hp FLA Qty Hp (ea) FLA (ea) MCA FUSE OR HA CR BRKR* 208/230 187 253 1 55.
43 Table 12 — Electri cal Data, 48 P2,P3,P4,P504 0 Units (cont) LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 1 (low heat) or 2 (high heat) comb ustion f an motors rat ed at 0.
44 Table 13 — Elec trical Data, 48P2,P3,P4,P5050 Uni ts VO L T AGE 3 PH, 60 Hz VO L T AG E RANGE COMPRESSOR CONDENSER F AN MOT OR EV APORA TOR F AN MOT OR PO WER EXHA UST PO WER SUPPL Y No. A1 No. B1 Min Max Qty RLA (ea) LRA (ea) Qty RLA (ea) LRA (ea) Qty FLA Hp FLA Qty Hp (ea) FLA (ea) MCA FUSE OR HA CR BRKR* 208/230 187 253 2 33.
45 Table 13 — Electri cal Data, 48 P2,P3,P4,P505 0 Units (cont) LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 1 (low heat) or 2 (high heat) comb ustion f an motors rat ed at 0.
46 Table 14 — Elec trical Data, 48P2,P3,P4,P5055 Uni ts LEGE ND * Used to determine minimum disconnect per NEC (National Elect rical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combustion f a n motors rated at 0.
47 Table 15 — Elec trical Data, 48P2,P3,P4,P5060 Uni ts LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combusti on fa n motors rated at 0.
48 Table 16 — Elec trical Data, 48P2,P3,P4,P5070 Uni ts LEGE ND * Used to determine minimum disconnect per NEC (National Elect rical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combustion f a n motors rated at 0.
49 Table 17 — Electric al Data — 48P2,P3,P4, P5075 Standard Units LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code).
50 Table 18 — Electric al Data — 48P2,P3, P4,P5075 Units wi th Optional High-Cap acity Power Ex haust LEGE ND * Used to determine minimum disconnect per NEC (National Elect rical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combustion f a n motors rated at 0.
51 Table 19 — Electri cal Data — 48P2, P3,P4,P5075 Uni ts with Option al Return Fan LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combusti on fa n motors rated at 0.
52 Table 20 — Electrical Data — 48P2,P3, P4,P5090 Standa rd Units LEGE ND * Used to determine minimum disconnect per NEC (National Elect rical Code).
53 Table 21 — Electric al Data — 48P2,P3, P4,P5090 Units wit h Optional High-Cap acity Power Ex haust LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combusti on fa n motors rated at 0.
54 Table 22 — Electri cal Data — 48P2 ,P3,P4,P5090 Un its with Opti onal Return Fan LEGE ND * Used to determine minimum disconnect per NEC (National Elect rical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combustion f a n motors rated at 0.
55 Table 23 — Electric al Data — 48P2,P3,P4, P5100 Standard Units LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code).
56 Table 24 — Electr ical Data — 48P2,P3,P4, P5100 Units with Opt ional High-Capaci ty Power Exhaus t LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat) co mbustion f an moto rs rated at 0.
57 Table 25 — Electri cal Data — 48P2, P3,P4,P5100 Uni ts with Option al Return Fan LEGE ND * Used to determine minimum disconnect per NEC (National Electrical Code). NO TE: Units use 2 (lo w heat) or 3 (high heat ) combusti on fa n motors rated at 0.
58 Step 13 — Connect Air Pressure T ubing — Be- fore options such as the variable frequency drive (VFD) and/or modulating power exhaust can ope rate properly , the pneumatic tubing for pressure sensing must be installed. Use fire-retardant plenum tubing (field-supplied) .
59 A UXILIAR Y CONTROL BO X BP DP OA CFM TRANSDUCER FS DP OA CFM TRANSDUCER BP FS Fig. 45 — Auxiliar y Control Box Lo cation (Sizes 05 5-100) LEGEND Fig.
60 Step 14 — Remo ve Suppl y-F an Shipping Brackets — Supply-fan shipping brackets (4 per unit) must be removed from each corner of the fan sled before starting unit. UNIT SIZES 030-050 1. T o remove brackets, raise fa n sled by turning adjusting bolt counterclockwise until spring is compressed slightly .
61 After removing all shipping brackets, level the fan using the adjustment screws. On all 4 corners the dimension from cross rail to fan sled should be as shown in Fig. 52. Step 16 — Connect Gas Piping — Unit is equipped for use with natural gas only .
62 Step 18 — Install Flue/Inlet Hoo ds and Baffles — The flue/inlet hoods and baf fles are shipped in a package taped to the basepan in the fan section. The flue (out- let) hoods are pre-assembled. Th e flue deflector , inlet hoods, and baffles require assembly .
63 FLUE OUTLET HOOD FLUE HOOD AND FLUE DEFLECT OR HOOD 6-IN. INLET HOOD 3 0-IN. INLET HOOD INLET BAFFLE (14-in.) INLET BAFFLE ( 3 0-in.) FLUE OUTLET HOOD FLUE HOOD AND FLUE DEFLECT OR HOOD 6-IN. INLET HOOD 3 0-IN. INLET HOOD 3 0-IN. INLET HOOD Fig. 56 — Flue/Inlet Hood Locations, Sizes 055-100, Low Heat, Horizontal Supply Units Fig.
64 Table 26 — Flue Hood, Inlet Hood, and Baffle Usage HOOD OR BAFFLE TYPE P ART S LIST FIG. NO . QU ANTITY USED Sizes 030-05 0 (Low Heat) Sizes 030- 050 (High Heat) Sizes 055- 070 (Low Heat ) Sizes 055 -070 (High Heat) Sizes 075-10 0 (Low Heat) Sizes 075- 100 (High Heat) 6-in.
65 OBSERVE OFFSET MOUNTING HOLE LOCA TIONS WHEN INST ALLING FLUE DEFLECTOR HOODS. FLUE DEFLECTOR BAFFLE (BOTH HOOD S ) FLUE DEFLECTOR HOOD MAKE S CREW HOLE S ALIGN ACCE SS P ANEL OPENING HOOD S IDE (TYP BOTH S IDE S ) S PEED CLIP (TYP 3 ) COVER (14-IN.
66 Table 27 — SGC Thermistor Designations SGC — Staged Gas Controller Step 20 — Install Optional Motormaster ® V Contr ol — The Motormaster V control is a m otor speed control device which adjusts condenser fan motor speed in re- sponse to varying liquid refrigerant pressure.
67 WIND BAFFLE Fig. 70 — Wind Baff le Details NO TE: 48/50P030, 035, and 070-100 units do not require baffles. UNIT SIZE QU ANTITY DIMENSION “A” in.
68 Step 21 — Install Unit Accessories — For appli- cations requiring accessories, the following packages are available: All units: • barometric relief • space temperature sensor •C O 2 senso.
69 • smoke control — purge (Fig. 83) • smoke control — evacu ation (Fig. 83) • smoke contro l — pressurizatio n (Fig. 83) • CCN connections (Fig.
70 FIELD IN S T ALLED (FIELD S UPPLIED) JUMPER WHEN ENTHALPY S WITCH NO T U S ED RCB J4 6 5 1 3 14 15 10 9 RCB J 8 RELA Y 5 MBB J8 7 8 TB201 FIL TER ST A TUS MBB J8 Fig. 74 — Heat Interlock Relay Wiring Fig. 75 — Outdoor Air Enthalpy Switc h Wiring Fig.
71 RCB J4 CEM J6 4 3 RED BRN Fig. 78 — Fan Status Switch Wiring Fig. 79 — Space and Return Air Humidity Sensor Wiring Fig. 80 — Return Air CO 2 Sensor Wirin g a48-8482 a48-8483.
72 MBB J6 TB201 1 2 BLU WHT FIRE SHUTDOWN RCB J4 TB 202 14 15 16 17 18 19 TB201 TB201 1 2 Fig. 81 — Return Air Smoke Detector Wiring Fig. 82 — Fire Shutdown Wiring Fig.
73 Carrier Comfort Network ® (CCN) Interface — T he 48P Series units can be connected to the CCN system if desired. The communication bus wiring is supplied and installed in the field. It consis ts of shielded, 3-conductor cable with shield wire. The system elements are connected to the communic ation bus in a daisy chain arrangement.
74 c. Secure the black (–) wire to CCN screw terminal – on the COMM board. d. Secu re shield wire to CCN screw terminal SHIELD on the COMM board. Optional UPC Open Installation WIRING THE UPC OPEN T O THE MS/T P NET - WO RK — The UPC Open controller communicates using BACnet on an MS/TP network segment communications at 9600 bps, 19.
75 Table 30 — Open Syste m Wiring Sp ecif ications and Recommended Vendors LEGEND This allows the space to be ove rpressurized relative to adjacent zones and prevents or slows entry of smoke into this space from adjacent zones. See Fig. 82 for wiring.
Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No .
An important point after buying a device Carrier 48P2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 48P2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 48P2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 48P2 you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 48P2 will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 48P2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 48P2.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 48P2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 48P2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
