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Carrier Performance 48VG-K Installation Instructions Manual
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Carrier Performance 48VG-K Installation Instructions Manual

Carrier Performance 48VG-K Installation Instructions Manual

15.2+ seer2 2-stage packaged air conditioner and gas furnace system with puron® (r-410a) refrigerant single and three phase 2-5 nominal tons (sizes 24-60)
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48VG-K: Installation Instructions
48VG-K
Performance™ 15.2+ SEER2 2-Stage Packaged Air
Conditioner and Gas Furnace System with Puron®
(R-410A) Refrigerant
Single and Three Phase
2-5 Nominal Tons (Sizes 24-60)
IMPORTANT: Effective January 1, 2015, all split system and packaged
air conditioners must be installed pursuant to applicable regional
efficiency standards issued by the Department of Energy.
NOTE:
Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Receiving and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Identify Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspect Shipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Slab Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
High-Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Special Procedures for 208-v Operation . . . . . . . . . . . . . . . . . . 13
Control Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Standard Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Transformer Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pre-Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Check Heating Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Check Gas Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Adjust Gas Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Check Burner Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Airflow and Temperature Rise . . . . . . . . . . . . . . . . . . . . . . . . . 25
Heating Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . 25
Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Rollout Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Checking Cooling Control Operation . . . . . . . . . . . . . . . . . . . . 25
Checking and Adjusting Refrigerant Charge . . . . . . . . . . . . . . 26
Indoor Airflow and Airflow Adjustments . . . . . . . . . . . . . . . . 26
Cooling Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . 27
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Indoor Blower and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Flue Gas Passageways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Limit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Burner Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Main Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Outdoor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Installation Instructions
6) . . . . . . . . . . . . . . . . . . . . . . 4
Electrical Controls and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 56
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Gas Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Evaporator Airflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Puron (R-410A) Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Loss of Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
High-Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Start-up Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Fig. 1 - Unit 48VG(Low NOx Model Available)

Safety Considerations

Improper installation, adjustment, alteration, service maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in literature and
attached to the unit. consult local building codes, the current editions of
the National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1, and the
National Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the National Standards of
Canada CAN/CSA-B149.1 and .2 Natural Gas and Propane Installation
codes, and Canadian Electrical Code CSA C22.1
1
A09033

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Summary of Contents for Carrier Performance 48VG-K

  • Page 1: Table Of Contents

    48VG-K: Installation Instructions 48VG-K Performance™ 15.2+ SEER2 2-Stage Packaged Air Conditioner and Gas Furnace System with Puron® (R-410A) Refrigerant Single and Three Phase 2-5 Nominal Tons (Sizes 24-60) Installation Instructions IMPORTANT: Effective January 1, 2015, all split system and packaged Electrical Controls and Wiring .

  • Page 2: Electrical Shock Hazard

    48VG-K: Installation Instructions Recognize safety information. This is the safety-alert symbol . When CAUTION you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: FIRE, EXPLOSION, ELECTRICAL SHOCK AND DANGER, WARNING, and CAUTION.

  • Page 3: Receiving And Installation

    48VG-K: Installation Instructions Slab Mount requirements of 40 nanograms/joule or less as shipped from the factory and must be installed in California Air Quality Management Districts or Place the unit on a solid, level pad that is at least 2 in. (51 mm) above any other regions in North America where a Low NOx rule exists.

  • Page 4: Inspection

    48VG-K: Installation Instructions available, use a spreader bar of sufficient length to protect the unit WARNING from damage. 2. Attach shackles, clevis pins, and straps to the base rails of the unit. PERSONAL INJURY OR PROPERTY DAMAGE Be sure materials are rated to hold the weight of the unit (See HAZARD Fig.
  • Page 5 48VG-K: Installation Instructions A230027 Fig. 3 – 24 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 6 48VG-K: Installation Instructions A230028 Fig. 4 – 36-60 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 7 48VG-K: Installation Instructions SMALL/COMMON CURB SMALL SUPPLY BASE UNIT LARGE BASE RETURN UNIT UNIT PLACEMENT ON COMMON CURB SMALL OR LARGE BASE UNIT LARGE CURB A180216 B (small / common UNIT CATALOG B (large base) base) SIZE NUMBER IN. (mm)* IN.
  • Page 8 48VG-K: Installation Instructions CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS MINIMUM HEIGHT: 36"...

  • Page 9: Indoor Coil

    Table 1 – Physical Data UNIT SIZE 24040 24060 36060 36090 48090 48115 48130 60090 60115 60130 NOMINAL CAPACITY (ton) SHIPPING WEIGHT lb SHIPPING WEIGHT kg COMPRESSORS Scroll Scroll Quantity REFRIGERANT (R-410A) 7.05 7.05 Quantity lb 10.8 10.8 10.8 12.1 12.1 12.1 Quantity (kg.)

  • Page 10: Step 6 - Connect Condensate Drain

    48VG-K: Installation Instructions Step 6 – Connect Condensate Drain Step 8 – Install Gas Piping NOTE: When installing condensate drain connection be sure to comply The gas supply pipe enters the unit through the access hole provided. with local codes and restrictions. The gas connection to the unit is made to the 1/2-in.

  • Page 11: Fire Or Explosion Hazard

    48VG-K: Installation Instructions Table 2 – Maximum Gas Flow Capacity † LENGTH OF PIPE FT (m) NOMINAL INTERNAL IRON PIPE DIAMETER SIZE (IN.) (IN.) (12) (15) (18) (21) (24) (27) (30) (38) (46) (53) (61) .622 — — .824 1.049 1-1/4 1.380 1400...

  • Page 12: Step 10 - Install Electrical Connections

    48VG-K: Installation Instructions CAUTION PROPERTY DAMAGE HAZARD Basepan Downflow Failure to follow this caution may result in property damage. (Vertical) Basepan Supply Collect ALL screws that were removed. Do not leave screws on rooftop Downflow Knockout (Vertical) as permanent damage to the roof may occur. Return Knockout 3.

  • Page 13: High-Voltage Connections

    48VG-K: Installation Instructions 2. Connect ground lead to chassis ground connection. CAUTION 3. Locate the black and yellow wires connected to the line side of the contactor (if equipped). UNIT COMPONENT DAMAGE HAZARD 4. Connect field L1 to black wire from connection 11 of the Failure to follow this caution may result in damage to the unit being compressor contactor.

  • Page 14: Heat Anticipator Setting (Electro-Mechanical Thermostats Only)14

    48VG-K: Installation Instructions Pre-Start-up HIGH VOLTAGE POWER LEADS (SEE UNIT WIRING WARNING LABEL) POWER 3-PHASE SHOWN SUPPLY 1-PHASE USES ENVIRONMENTAL, FIRE, EXPLOSION, ELECTRICAL TWO POWER LEADS SHOCK HAZARD EQUIP GR FIELD-SUPPLIED Failure to follow this warning could result in personal injury or death. FUSED DISCONNECT Follow recognized safety practices and wear protective goggles CONTROL BOX...

  • Page 15: Start-Up

    48VG-K: Installation Instructions 4. Verify the following conditions: Follow the lighting instructions on the heating section operation label a. Make sure gas line is free of air. Before lighting the unit for the (located on the inside of the control access panel) to start the heating first time, perform the following with the gas valve in the OFF section.

  • Page 16: Check Gas Input

    48VG-K: Installation Instructions 6. With the desired temperature set several degrees higher than the Table 3 – Altitude Derate Multiplier for U.S.A. room temperature, most thermostats will energize low and high Derate Multiplier Altitude ft (m) Percent of Derate stage. Verify that the gas valve is energized on high stage and the †...
  • Page 17 48VG-K: Installation Instructions Table 4 – Natural Gas Orifice Sizes and Manifold Pressure ALTITUDE OF INSTALLATION (FT. [m] ABOVE SEA LEVEL) U.S.A. Nameplate Input, 2001 to High Stage 0 to 2000 3000* 3001 to 4000 4001 to 5000 5001 to 6000 (Btu/hr) [0 to 610] [610 to...

  • Page 18: Check Burner Flame

    48VG-K: Installation Instructions 4. For 208/230 VAC models only: turn the low stage plastic Measure Manifold Pressure (Propane Units) adjustment screw clockwise to increase input Refer to propane kit installation instructions for properly checking gas counterclockwise to decrease input (see Fig.
  • Page 19 48VG-K: Installation Instructions A230125 Fig. 15 – 208/230-1-60 Connection Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 20 48VG-K: Installation Instructions A230126 Fig. 16 – 208/230-1-60 Ladder Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 21 48VG-K: Installation Instructions A230123 Fig. 17 – 208/230-3-60 Connection Wiring Diagram Gas Inputs Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 22 48VG-K: Installation Instructions A230124 Fig. 18 – 208/230-3-60 Ladder Wiring Diagram Gas Inputs Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 23 48VG-K: Installation Instructions A230044 Fig. 19 – 460-3-60 Connection Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 24 48VG-K: Installation Instructions A230045 Fig. 20 – 460-3-60 Ladder Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

  • Page 25: Normal Operation

    48VG-K: Installation Instructions Normal Operation completes the control circuit. The direct-spark ignition system cycles and the unit returns to normal heating operation. An LED (light-emitting diode) indicator is provided on the integrated Table 6 – LED Indications gas unit controller (IGC) to monitor operation. The IGC is located by removing the control access panel (see Fig.

  • Page 26: Checking And Adjusting Refrigerant Charge

    48VG-K: Installation Instructions temperature control is set to “call for Cooling” (below room is more than 2°F (1.1°C) lower than required liquid line temperature). temperature. NOTE: Once the compressor has started and then has stopped, it should NOTE: If the problem causing the inaccurate readings is a refrigerant not be started again until 5 minutes have elapsed.

  • Page 27: Cooling Sequence Of Operation

    48VG-K: Installation Instructions heating airflow at minimum external static pressure. Table 11 (208/230 pressure, Table 12 (460 VAC models) to find the airflows available at the VAC models) provide airflow data for higher external static pressures. total static pressure. The speed chosen must provide airflow of between 350 to 450 CFM per ton of cooling.
  • Page 28 48VG-K: Installation Instructions HEAT HIGH OILL AB A15 R3 R5 R6 C 24VAC SSTZ-8 A09058 Fig. 22 – Interface Fan Board (IFB) 460 VAC Models Table 10 – Subcooling Charging Chart A230122 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 29 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan SW1-7 SW1-8 Dehumidification Low SW1-3 SW1-4...
  • Page 30 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High SW1-1 SW1-2 High Stage Cooling 0.11...
  • Page 31 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 32 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High SW1-1 SW1-2 #VALU #VALU...
  • Page 33 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 34 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1164 1107 1051 SW1-1...
  • Page 35 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 36 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1164 1107 1051 SW1-1...
  • Page 37 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 38 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 39 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 40 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 41 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 42 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 43 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 44 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 45 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 46 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 47 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW2-5 SW2-6 Continuous Fan* SW1-7 SW1-8 Dehumidification Low SW1-3...
  • Page 48 Table 11 – Dry Coil Air Delivery** - Horizontal and Downflow Discharge Sizes 24-60 208/230 VAC - 1, 3 Phase (Continued) Heating ESP (in. W.C.) Motor Motor Speed Unit Size Rise Allowable Functions Speed Selection SW1-5 SW1-6 Dehumidification High 1383 1339 1296 1254...
  • Page 49 Table 12 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 36-60 460 VAC - 3 Phase Heating Rise ESP (in. W.C.) Unit Size Motor Speed 1064 0.26 0.26 0.27 0.29 0.31 0.32 0.34 0.36 0.38 0.39 Low† Blue Gas Heat Rise ( Gas Heat Rise (...
  • Page 50 Table 12 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 36-60 460 VAC - 3 Phase (Continued) Heating Rise ESP (in. W.C.) Unit Size Motor Speed 1312 1264 1214 1165 1117 1070 1020 0.41 0.43 0.45 0.47 0.48 0.50 0.51...
  • Page 51 Table 12 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 36-60 460 VAC - 3 Phase (Continued) Heating Rise ESP (in. W.C.) Unit Size Motor Speed 1312 1264 1214 1165 1117 1070 1020 0.41 0.43 0.45 0.47 0.48 0.50 0.51...
  • Page 52 Table 12 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 36-60 460 VAC - 3 Phase (Continued) Heating Rise ESP (in. W.C.) Unit Size Motor Speed 1312 1264 1214 1165 1117 1070 1020 0.41 0.43 0.45 0.47 0.48 0.50 0.51...
  • Page 53 Table 13 – Wet Coil Pressure Drop (IN. W.C.) Unit Standard CFM (SCFM) Size 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 0.02 0.03 0.04 0.04 0.05 0.06 0.03 0.04 0.05 0.05 0.06 0.07 0.08 0.08 0.09 0.10...

  • Page 54: Maintenance

    48VG-K: Installation Instructions Maintenance 6. Check and inspect heating section before each heating season. Clean and adjust when necessary. To ensure continuing high performance and to minimize the possibility 7. Check flue hood and remove any obstructions, if necessary. of premature equipment failure, periodic maintenance must be Air Filter performed on this equipment.

  • Page 55: Flue Gas Passageways

    48VG-K: Installation Instructions season. For the first heating season, inspect blower wheel bimonthly to WARNING determine proper cleaning frequency. To inspect blower wheel, remove draft hood assembly. Shine a flashlight FIRE, EXPLOSION HAZARD into opening to inspect wheel. If cleaning is required, remove induced-draft blower assembly as follows: Failure to follow this warning could result in personal injury, death or property damage.

  • Page 56: Outdoor Fan

    48VG-K: Installation Instructions Outdoor Fan CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components. Keep the condenser fan free from all obstructions to ensure proper cooling operation. Never place articles on top of the unit. 1.

  • Page 57: Refrigerant Circuit

    48VG-K: Installation Instructions FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” Size Fig. 27 – Fan Blade Position Refrigerant Circuit pressure switches must not be used as replacements for the Puron (R-410A) system.

  • Page 58: Refrigerant System

    48VG-K: Installation Instructions Synthetic Roof Precautionary Procedure WARNING 1. Cover extended roof working area with an impermeable polyethylene (plastic) drip cloth or tarp. Cover an approximate 10 FIRE/EXPLOSION HAZARD X 10 ft. (3.1 m X 3.1 m) area. Failure to follow this warning could result in personal injury or death 2.
  • Page 59 48VG-K: Installation Instructions Table 16 – Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, or high-pressure, Replace component loss-of-charge or low-pressure switch Compressor and condenser fan will not start. Insufficient line voltage Determine cause and correct Incorrect or faulty wiring...
  • Page 60 48VG-K: Installation Instructions Table 17 – Troubleshooting Guide–Heating SYMPTOM CAUSE REMEDY Water in gas line Drain. Install drip leg. No power to furnace Check power supply fuses, wiring or circuit breaker. Check transformer. No 24-v power supply to control circuit NOTE: Some transformers have internal over-current protection that requires a cool-down period to reset.
  • Page 61 Access My Learning Center with your HVACpartners credentials at www.mlctraining.com. Please contact us a mylearning@carrier.com with questions. © 2023 Carrier. All rights reserved. Edition Date: 03/23 Catalog No: 48VG-08SI Replaces: 48VG-07SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.