Carrier WeatherMaster 48P 030 Installation Instructions Manual
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Carrier WeatherMaster 48P 030 Installation Instructions Manual

Carrier WeatherMaster 48P 030 Installation Instructions Manual

Single package gas heating and electric cooling units with direct spark ignition and comfortlink controls
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CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
UNIT CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 3
Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1 - Perform Jobsite Survey . . . . . . . . . . . . . . . 4
Step 2 - Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 3 - Roof Mount Unit . . . . . . . . . . . . . . . . . . . . . 4
Step 4 - Slab Mount Unit . . . . . . . . . . . . . . . . . . . . . 4
Step 5 - Install Curb Gasketing . . . . . . . . . . . . . . . . 4
Step 7 - Rig Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Step 11 - Route Field Wiring . . . . . . . . . . . . . . . . . 38
Spring Compression Bolts . . . . . . . . . . . . . . . . . . . . 67
Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Step 16 - Connect Gas Piping . . . . . . . . . . . . . . . . 69
Modulating Gas Control . . . . . . . . . . . . . . . . . . . . 69
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Step 21 - Install Unit Accessories . . . . . . . . . . . . . 76
CONTROLS INSTALLATION . . . . . . . . . . . . . . . . . . . 76
Constant Volume (CV) Units . . . . . . . . . . . . . . . . . . 76
Variable Air Volume (VAV) Units . . . . . . . . . . . . . . . 76
Optional UPC Open Installation . . . . . . . . . . . . . . . . 81
Smoke Control Modes . . . . . . . . . . . . . . . . . . . . . . . 84
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480494-01
Single Package Gas Heating and Electric Cooling Units
with Direct Spark Ignition and ComfortLink Controls
Installation Instructions
. . . . . . . . . . 23
®
(CCN) Interface . . . . . . . 81
Printed in U.S.A.
Form 48P-11SI
Page
This installation instruction contains basic unit installation infor-
mation, including installation of thermostats and remote tempera-
ture sensors.
For additional information and service instructions, refer to the
Controls and Troubleshooting literature.
A factory-installed optional integral economizer and high-capacity
power exhaust is available on size 075-100 units.
A factory-installed optional return fan is available on size 075-100
units.
The staged gas control (SGC) option adds the capability to con-
trol the rooftop unit's gas heating system to a specified supply-
air temperature set point for purposes of tempering a cool
mixed-air condition.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
Before performing service or maintenance operations on unit,
turn off main power switch to unit. Electrical shock could
cause personal injury.
Pg 1
WeatherMaster
48P 030-100

GENERAL

. When you see this symbol on the unit and in
WARNING
2-24
®
Replaces: 48P-10SI

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Summary of Contents for Carrier WeatherMaster 48P 030

  • Page 1: Table Of Contents

    Variable Air Volume (VAV) Units ....76 or operation. Option and Accessory Control Wiring ..77 Carrier Comfort Network ® (CCN) Interface ..81 WARNING Optional UPC Open Installation .
  • Page 2 WARNING WARNING RISK OF FIRE OR EXPLOSION DO NOT USE TORCH to remove any component. System contains oil and refrigerant under pressure. If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal in- To remove a component, wear protective gloves and goggles jury or loss of life.

  • Page 3: Fire Hazard

    UNIT CONSIDERATIONS WARNING Temporary Operation for a Completed Building Carrier does not recommend operating the supply fan, cooling, de- FIRE HAZARD humidification, or heating systems of this equipment prior to Failure to follow this warning could result in severe personal equipment start-up being performed.

  • Page 4: Installation

    Level by using unit frame as a reference. Physical data is shown in INSTALLATION Tables 1-12. Step 1 — Perform Jobsite Survey Step 3 — Roof Mount Unit Complete the following checks before installation. Check building codes for weight distribution requirements. Unit Consult local building codes and the NEC (National Electri- weight is shown in Tables 1-4 and 8.
  • Page 5 Table 1 — Physical Data 48P 030-035 BASE UNIT 48P 030 48P 035 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Standard Chassis Extended Chassis Standard Chassis Extended Chassis Base Unit Low Heat 5310 5810 5410 5910 High Heat 5440 5940 5540 6040 With Economizer Low Heat...
  • Page 6 Table 2 — Physical Data 48P 040-050 BASE UNIT 48P 040 48P 050 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Standard Chassis Extended Chassis Standard Chassis Extended Chassis Base Unit Low Heat 5810 6310 6025 6525 High Heat 5940 6440 6155 6655 With Economizer Low Heat...
  • Page 7 Table 3 — Physical Data 48P 055-070 BASE UNIT 48P 055 48P 060 48P 070 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Standard Chassis Extended Chassis Standard Chassis Extended Chassis Standard Chassis Extended Chassis Base Unit Low Heat 7810 8360 7865 8415 8205 8755...
  • Page 8 Table 4 — Physical Data 48P 075-100 BASE UNIT 48P 075 48P 090 48P 100 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Standard Chassis Extended Chassis Standard Chassis Extended Chassis Standard Chassis Extended Chassis Base Unit Low Heat 9065 9615 9665 10,215 9685 10,235...
  • Page 9 Table 5 — Optional Return Fan Physical Data 48P 030-050 48P 055-070 48P 075-100 BASE UNIT Plenum Fan (Any motor available on any unit) RETURN/EXHAUST FAN 30 in. 36 in. 47.13 in. Quantity...Motor Hp 1...10 1...15 1...20 1...25 1...15 1...20 1...25 1...30 1...20...
  • Page 10 Table 9 — Supply Fan Drive Data SHAFT SPEED MOTOR MOTOR WHEEL WHEEL QUANTITY...BELT DIA (in.) (rpm) SHEAVE PITCH DIA (in.) SHEAVE PITCH DIA (in.) Sizes 030-050 1-3/8 2BK36 2B5V136 13.7 2...BX60 1-3/8 2B5V42 2B5V136 13.7 2...5VX630 1-5/8 2B5V48 2B5V136 13.7 2...5VX630 1-5/8...
  • Page 11 Table 12 — Optional Return Fan Drive Data MOTOR SHEAVE BLOWER SHEAVE MOTOR CENTER TOTAL MOTOR SPEED SHAFT QTY...BELT DISTANCE Part Pitch Part Pitch QTY...HP DIA. (in.) RANGE (in.) Number Diameter (in.) Number Diameter (in.) Sizes 030-050 1...10 1.375 1300 2B5V48 D4700 2...BX80...
  • Page 12 NOTES: Roof curb is shipped disassembled. Roofcurb: 14ga (VA03-56) STL. Dimensions are inches (millimeters). Installation instructions are shipped with roofcurb. 50V Standard Chassis 50V Standard Chassis With Extension Section 48V Standard Chassis and 50V Standard Chassis with Plenum Section 48V Standard Chassis with Extension Section 50V Standard Chassis with Extension and Plenum Sections Fig.
  • Page 13 Fig. 3 — Roof Curb — Sizes 055, 060...
  • Page 14 Fig. 4 — Roof Curb — Sizes 070-100...
  • Page 15 Fig. 5 — Condenser Section Roof Curb (Sizes 070 and 075)
  • Page 16 Fig. 6 — Condenser Section Roof Curb (Sizes 090 and 100)
  • Page 17 "X" CONDENSER END SUPPORT 4 REF. 9-3/4" "X"- NO GASKET DETAIL A-A Fig. 7 — Gasket Location on Roof Curb (Size 070-100 Units) Fig. 8 — Gasket Location — Condenser Section Roof Curb (Size 070-100 Units)

  • Page 18: Step 6 - Install Field-Fabricated Ductwork

    Fig. 9 — Gasket Location on Roof Curb (48P075-100 Units with Optional High-Capacity Power Exhaust) Secure all ducts to the building structure, using flexible duct con- Step 6 — Install Field-Fabricated Ductwork nectors between roof curbs and ducts as required. Ducts passing through an unconditioned space must be insulated and covered WARNING with a vapor barrier.
  • Page 19 Fig. 10 — Rigging Label — 030-070 Units...
  • Page 20 Fig. 11 — Rigging Label — 075-100 Units...
  • Page 21 Corner Weights (lb) Total Weight Units Size A (in.) B (in.) (lb) 48 P2,P3,P4,P5,P6,P7,P8,P9 2002 1009 1008 2000 6019 170.62 45.81 Vertical Supply/ Return 2056 1031 1029 2053 6169 170.93 45.81 Horizontal Supply/ Return 1983 1374 1372 1981 6710 198.24 45.81 Low Gas Heat 2044...
  • Page 22 Corner Weights (lb) Total Weight Units with Optional Return Fan Size A (in.) B (in.) (lb) 48 P2, P3, P6, P7 Low Gas Heat 2295 1167 1165 2292 6919 170.11 45.81 Vertical Supply/ Return 2349 1188 1186 2346 7069 170.45 45.81 2239 1569...

  • Page 23: Step 8 - Connect Condensate Drain

    SECONDARY DRAINS (UNITS INSTALLED ON STEEL Step 8 — Connect Condensate Drain BEAM OR SLAB) There are a total of five drain connections required on each unit: one primary drain (on right-hand side of the unit) and four second- There are two secondary drain connections required on each side ary drains (two on each side of unit).
  • Page 24 Fig. 13 — Base Unit Dimensional Drawing — 48P2,P3,P6,P7030,035 (Standard Chassis Unit Shown)
  • Page 25 Fig. 14 — Base Unit Dimensional Drawing — 48P4,P5,P8,P9030,035 (Standard Chassis Unit Shown)
  • Page 26 Fig. 15 — Base Unit Dimensional Drawing — 48P2,P3,P6,P7040-050 (Standard Chassis Unit Shown)
  • Page 27 Fig. 16 — Base Unit Dimensional Drawing — 48P4,P5,P8,P9040-050 (Standard Chassis Unit Shown)
  • Page 28 Fig. 17 — Base Unit Dimensional Drawing — 48P2,P3,P6,P7055,060 (Standard Chassis Unit Shown)
  • Page 29 Fig. 18 — Base Unit Dimensional Drawing — 48P4,P5,P8,P9055,060 (Standard Chassis Unit Shown)
  • Page 30 Fig. 19 — Base Unit Dimensional Drawing — 48P2,P3,P6,P7070 (Standard Chassis Unit Shown)
  • Page 31 Fig. 20 — Base Unit Dimensional Drawing — 48P4,P5,P8,P9070 (Standard Chassis Unit Shown)
  • Page 32 Fig. 21 — Base Unit Dimensional Drawing — 48P2,P3,P6,P7075-100 (Standard Chassis Unit with Optional High-Capacity Power Exhaust Shown)
  • Page 33 Fig. 22 — Base Unit Dimensional Drawing — 48P4,P5,P8,P9075-100 (Standard Chassis Unit with Optional Return Fan Shown)
  • Page 34 AUXILIARY COIL LOCATION (in.) UNIT DISTANCE A HEIGHT B SIZES 030,035 123.0 040,050 156.8 055-070 200.4 075-100 200.4 075-100 with High- 279.2 Capacity Power Exhaust Fig. 23 — Units with Optional Extended Chassis — Location of Coil Tracks Fig. 26 — Secondary Condensate Drain Location (Curb Mount) Fig.

  • Page 35: Step 9 - Install Outdoor Hoods (Units Without Optional High-Capacity Power Exhaust)

     Economizer Hoods (Units with Economizer Option) (Fig. 34-36) Outdoor-air hoods are shipped bolted to the unit in a shipping position. Remove the holddown screw from the lower corner of each economizer hood. Pivot hoods out and upward (4 hoods). Apply seal strip to upper horizontal flange of the hood top extensions.

  • Page 36: Step 10 - Install Economizer Hoods (Units With Optional High-Capacity Power Exhaust)

    SIDE HOOD (ROTATE SIDE HOODS OPEN) (ROTATE OPEN) END HOOD (FIXED) END HOODS (FIXED) SIDE HOOD HOOD TOP (ROTATE EXTENSION OPEN) HOOD TOP SIDE HOODS EXTENSION POWER EXHAUST (FIXED) RETURN/ (ROTATE EXHAUST (FIXED) OPEN) Fig. 32 — Economizer with Power Exhaust Fig.
  • Page 37 Place seal strip on backside of bottom support (Item 7) along 10. Attach top hood to unit and to hood sides. Be sure seal strip is entire length of support, covering 6 clearance holes. between hood top and unit. Attach bottom support piece (Item 7) to unit. Be sure seal 11.

  • Page 38: Step 11 - Route Field Wiring

    APPLY RTV IN THE INDICATED AREAS ITEM 5 ITEM 3 SEE DETAIL Z ITEM 6 DETAIL Z SCALE 3:4 ITEM 1 ITEM 8 ITEM 7 ITEM 2 APPLY RTV TO BOTH ENDS OF BOTTOM FILTER ROW ITEM 10 ITEM 9 ITEM 4 Fig.

  • Page 39: Control Box

    CONTROL BOX RECOMMENDED FIELD-SUPPLIED CAUTION DISCONNECT LOCATION Use care when drilling into corner post to avoid damage to condenser coil. Fig. 39 — Disconnect Location — Size 030 and 035 Units CAUTION Use care when drilling into corner post to avoid damage to condenser coil.

  • Page 40: Step 12 - Make Field Electrical Connections

    Determine maximum deviation from average voltage: Step 12 — Make Field Electrical Connections (AB) 457 – 452 = 5 v IMPORTANT: Units with VFDs (variable frequency drives) (BC) 464 – 457 = 7 v generate, use, and can radiate radio frequency energy. If units are (AC) 457 –...
  • Page 41 FACTORY-INSTALLED DISCONNECT HANDLE LOCATION FACTORY-INSTALLED DISCONNECT (HIDDEN) Fig. 44 — Factory-Installed Disconnect Location (End of Unit Shown)
  • Page 42 Table 13 — Electrical Data, 48P 030 Units VOLTAGE COMPRESSOR CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE FUSE OR 3 PH, 60 Hz HACR (ea) (ea) (ea) (ea) (ea) (ea) BRKR —...
  • Page 43 Table 13 — Electrical Data, 48P 030 Units (cont) VOLTAGE COMPRESSOR CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE FUSE OR 3 PH, 60 Hz HACR (ea) (ea) (ea) (ea) (ea) (ea) BRKR —...

  • Page 44: Power Exhaust

    Table 14 — Electrical Data, 48P 035 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR FAN POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR MOTOR VOLTAGE No. A1 No. B1 3 PH, FUSE OR 60 Hz HACR (ea) (ea) (ea) (ea) (ea) (ea) BRKR —...
  • Page 45 Table 14 — Electrical Data, 48P 035 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR FAN POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR MOTOR VOLTAGE No. A1 No. B1 3 PH, FUSE OR 60 Hz HACR (ea) (ea) (ea) (ea) (ea) (ea) BRKR —...
  • Page 46 Table 15 — Electrical Data, 48P 040 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 47 Table 15 — Electrical Data, 48P 040 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR VOLTAGE POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 48 Table 16 — Electrical Data, 48P 050 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 49 Table 16 — Electrical Data, 48P 050 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR VOLTAGE POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 50 Table 17 — Electrical Data, 48P 055 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 51 Table 17 — Electrical Data, 48P 055 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR VOLTAGE POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 52 Table 18 — Electrical Data, 48P 060 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 53 Table 18 — Electrical Data, 48P 060 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR VOLTAGE POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 54 Table 19 — Electrical Data, 48P 070 Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 55 Table 19 — Electrical Data, 48P 070 Units (cont) COMPRESSOR VOLTAGE CONDENSER EVAPORATOR VOLTAGE POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 56 Table 20 — Electrical Data — 48P 075 Standard Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY VOLTAGE RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 3 PH, FUSE OR HACR 60 Hz (ea) (ea) (ea) (ea) (ea) (ea) BRKR —...
  • Page 57 Table 21 — Electrical Data — 48P 075 Units with Optional High-Capacity Power Exhaust COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1,A2 No. B1,B2 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea)
  • Page 58 Table 22 — Electrical Data — 48P 075 Units with Optional Return Fan COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea) (ea)
  • Page 59 Table 23 — Electrical Data — 48P 090 Standard Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...

  • Page 60: Power Exhaust

    Table 24 — Electrical Data — 48P 090 Units with Optional High-Capacity Power Exhaust COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea)
  • Page 61 Table 25 — Electrical Data — 48P 090 Units with Optional Return Fan COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea) (ea)
  • Page 62 Table 26 — Electrical Data — 48P 100 Standard Units COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea) (ea) HACR BRKR —...
  • Page 63 Table 27 — Electrical Data — 48P 100 Units with Optional High-Capacity Power Exhaust COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea)
  • Page 64 Table 28 — Electrical Data — 48P 100 Units with Optional Return Fan COMPRESSOR VOLTAGE CONDENSER EVAPORATOR POWER EXHAUST POWER SUPPLY RANGE FAN MOTOR FAN MOTOR No. A1 No. B1 VOLTAGE 3 PH, 60 Hz FUSE OR (ea) (ea) (ea) (ea) (ea) (ea)

  • Page 65: Step 13 - Connect Air Pressure Tubing

    MODULATING POWER EXHAUST Step 13 — Connect Air Pressure Tubing Before options such as the variable frequency drive (VFD) and/or The tubing for the building pressure (BP) control (achieved via modulating power exhaust can operate properly, the pneumatic the modulating power exhaust option) should sample building tubing for pressure sensing must be installed.
  • Page 66 OACFM TRANSDUCER OACFM TRANSDUCER LEGEND LEGEND — Building Pressure Transducer — Building Pressure Transducer — Duct Pressure Transducer — Duct Pressure Transducer — Filter Switch — Filter Switch OACFM — Outdoor Air cfm Sensor Transducer OACFM — Outdoor Air cfm Sensor Transducer Fig.

  • Page 67: Step 14 - Remove Supply-Fan Shipping Brackets And Spring Compression Bolts

    Step 14 — Remove Supply-Fan Shipping Brackets and Spring Compression Bolts Supply-fan shipping brackets (4 per unit) must be removed from each corner of the fan sled before starting unit. UNIT SIZES 030-050 To remove brackets, raise fan sled by turning adjusting bolt counterclockwise until spring is compressed slightly.

  • Page 68: Step 15 - Remove Optional Return-Fan Shipping

    Fig. 53 — Shipping Brackets Step 15 — Remove Optional Return-Fan Ship- ping Brackets Optional return fan shipping brackets must be removed from each corner of the fan sled before starting unit. To remove shipping brackets, remove 2 screws holding each bracket to the cross rail.

  • Page 69: Step 16 - Connect Gas Piping

    modulating low heat and horizontal supply), and Fig. 62 (sizes Step 16 — Connect Gas Piping 055-100 with modulating high heat). See Table 29 for a list of Unit is equipped for use with natural gas only. Installation must parts used to assemble each hood and quantities of each hood conform with local building codes, or in the absence of local type and baffle used with each unit.
  • Page 70 FLUE OUTLET HOOD FLUE HOOD 30 IN. INLET AND FLUE HOOD DEFLECTOR HOOD VIEW PORT COVER FLUE OUTLET 14 IN. INLET HOOD HOOD FLUE HOOD 30 IN. INLET AND FLUE HOOD DEFLECTOR 6 IN. INLET HOOD HOOD 6 IN. INLET HOOD Fig.
  • Page 71 INLET BAFFLE (30 IN.) Fig. 61 — Baffle Location, Sizes 055-100, Modulating Low Heat, Horizontal Supply Units INLET BAFFLE (30 IN.) Fig. 62 — Baffle Locations, Sizes 055-100, Modulating High Heat, Vertical and Horizontal Supply Units...

  • Page 72: Parts List

    Table 29 — Flue Hood, Inlet Hood, and Baffle Usage QUANTITY USED HOOD OR PARTS LIST FIG. NO. Sizes 030-050 Sizes 030-050 Sizes 055-070 Sizes 055-070 Sizes 075-100 Sizes 075-100 BAFFLE TYPE (Low Heat) (High Heat) (Low Heat) (High Heat) (Low Heat) (High Heat) Top (6 in.)
  • Page 73 VIEW PORT COVER OBSERVE OFFSET MOUNTING HOLE LOCATIONS WHEN INSTALLING FLUE DEFLECTOR HOODS. Fig. 66 — Mounting Deflector Hoods Fig. 68 — 14 in. Inlet Hood View Port Cover Installation ACCESS PANEL COVER OPENING (14-IN. HOOD ONLY) INLET HOOD SIDE INLET HOOD SCREEN...

  • Page 74: Step 19 - Install Supply-Air Thermistors

    Step — Install Supply-Air Thermistors Step 20 — Install Greenspeed/Low Ambient (Staged and Modulating Gas Units Only) Control (Optional) Supply-air thermistors are a field-installed, factory-provided com- The Greenspeed ® /Low Ambient control is a motor speed con- ponent. Three supply-air thermistors are shipped with staged and trol device which adjusts condenser fan motor speed in re- modulating gas units inside the unit control box.
  • Page 75 WIND BAFFLE BAFFLE INSTALLATION LOCATION (SIZES 050 AND 060 SHOWN) DIMENSION “A” UNIT SIZE QUANTITY 030,035 Not Used — — 040-060 78.125 ± 0.125 1984 ± 3 070-100 Not Used — — NOTE: 48/50P030, 035, and 070-100 units do not require baffles. Fig.

  • Page 76: Step 21 - Install Unit Accessories

    CONTROL WIRING wired to terminals in the unit main control box. To connect the space temperature sensor, see Fig. 74. The unit can be controlled with a Carrier-approved accessory electro-mechanical or electronic thermostat that has two stages SPACE TEMPERATURE SENSOR (T-56)

  • Page 77: Space Temperature Averaging

    Troubleshooting manual for more information concerning installa- tion and configuration of options and accessories. Figures 76-86 NOTE: Only Carrier sensors may be used for standard T-55 space contain wiring information on the following features: averaging. Sensors must be used in multiples of 1, 4, and 9 only, with total sensors wiring not to exceed 1000 ft.
  • Page 78 RELAY 5 Fig. 76 — Heat Interlock Relay Wiring FIELD INSTALLED (FIELD SUPPLIED) JUMPER WHEN ENTHALPY SWITCH NOT USED Fig. 77 — Outdoor Air Enthalpy Switch Wiring TB201 Fig. 78 — CO Space Sensor Wiring FILTER STATUS Fig. 79 — Filter Status Wiring Fig.
  • Page 79 RELATIVE HUMIDITY POWER SUPPLY 24VDC If the Humidity sensors (supplied or field provided) indicate swings in relative humidity, a local 24VDC power supply should be field installed to level out the reading from the device. Fig. 81 — Space and Return Air Humidity Sensor Wiring Fig.

  • Page 80: Fire Shutdown

    FIRE SHUTDOWN TB201 Fig. 84 — Fire Shutdown Wiring TB 202 RCB J4 Fig. 85 — Purge, Evacuation, and Pressurization Wiring TB201 Fig. 86 — CCN Connections...

  • Page 81: Carrier Comfort Network (Ccn) Interface

    Secure the black (–) wire to CCN screw terminal – on Carrier Comfort Network ® (CCN) Interface the COMM board. The 48P Series units can be connected to the CCN system if de- d. Secure shield wire to CCN screw terminal SHIELD on sired.
  • Page 82 If use linkage is set to Yes in the UPC, then the ZS sensor val- NOTE: All factory provided UPCs are shipped with a local ues will only be displayed in the Linkage values shared be- program for English or SI units. If Metric interaction is desired tween the UPC and the RTU.

  • Page 83: Specification

    BACnet ® BT 485 SHIELD PORT S1 BACnet MS/TP NET- NET+ EIA-485 485-2WIRE Fig. 89 — BT485 Installation Table 32 — MS/TP Wiring Recommendations SPECIFICATION RECOMMMENDATION Cable Single twisted pair, low capacitance, CL2P, 22 AWG (7x30), TC foam FEP, plenum rated cable Conductor 22 or 24 AWG stranded copper (tin plated) Insulation...

  • Page 84: Smoke Control Modes

    (optional inlet guide vanes open or optional VFD at normal duct static pressure set point) © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

This manual is also suitable for:

Weathermaster 48p 035Weathermaster 48p 040Weathermaster 48p 050Weathermaster 48p 055Weathermaster 48p 060Weathermaster 48p 070 ... Show all

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