Spec Sheet

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Table Of Contents

38MHRB

Outdoor Unit Single Zone Ductless System

Sizes 09 to 24

Product Data

NOTE: Images are for illustration purposes only. Actual models

may differ slightly.

TABLE OF CONTENTS

PAGE

MODEL NUMBER NOMENCLATURE 3.................

STANDARD FEATURES AND ACCESSORIES 4...........

DIMENSIONS − OUTDOOR 5..........................

CLEARANCES − OUTDOOR 8.........................

SPECIFICATIONS − OUTDOOR COOLING ONLY 9........

COMPATIBILITY 9...................................

PERFORMANCE 9...................................

SPECIFICATIONS − OUTDOOR HEAT PUMP 10..........

COMPATIBILITY 10..................................

PERFORMANCE 10..................................

COOLING PERFORMANCE DATA − (COOLING ONLY) 11..

COOLING PERFORMANCE DATA − (HEAT PUMP) 12.....

HEATING PERFORMANCE DATA − (HEAT PUMP) 13......

APPLICATION DATA 14...............................

WIRING 15..........................................

AIR FLOW DATA 16..................................

SOUND DATA 16.....................................

SOUND PRESSURE IN OCTAVE BANDS 16..............

ELECTRICAL DATA 17...............................

FAN AND MOTOR SPECIFICATIONS 18.................

WIRING DIAGRAMS 19...............................

GUIDE SPECIFICATIONS 25...........................

INDUSTRY LEADING

FEATURES / BENEFITS

A PERFECT BALANCE BETWEEN

BUDGET LIMITS, ENERGY SAVINGS AND

COMFORT.

The 38MHRB series ductless systems are a matched combination

of an outdoor condensing unit and an indoor fan coil unit

connected only by refrigerant tubing and wires.

The ductless system permits creative solutions to design problems

such as:

S Add−ons to current space (an office or family room

addition)

S Special space requirements

S When changes in the load cannot be handled by the

existing system

S When adding air conditioning to spaces that are heated

by hydronic or electric heat and have no ductwork

S Historical renovations or any application where

preserving the look of the original structure is essential.

The ideal compliment to your ducted system when it is impractical

or prohibitively expensive to use ductwork.

The compact indoor fan coil units take up very little space in the

room and do not obstruct windows. The fan coils are attractively

styled to blend with most room decors. Advanced system

components incorporate innovative technology to provide reliable

cooling performance at low sound levels.

Summary of content (26 pages)

PAGE 1
38MHRB Outdoor Unit Single Zone Ductless System Sizes 09 to 24 Product Data INDUSTRY LEADING FEATURES / BENEFITS A PERFECT BALANCE BETWEEN BUDGET LIMITS, ENERGY SAVINGS AND COMFORT. The 38MHRB series ductless systems are a matched combination of an outdoor condensing unit and an indoor fan coil unit connected only by refrigerant tubing and wires. The ductless system permits creative solutions to design problems such as: NOTE: Images are for illustration purposes only. Actual models may differ slightly.
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Inverter Technology Fast Installation The inverter driven compressor is designed to run at various input power frequencies (Hz) which controls the compressor’s motor speed. Even Temperature – The control package, including the inverter, monitors the outdoor and indoor temperatures as they relate to the selected indoor set point and adjusts the compressor speed to match the load and keep the system operating continuously rather than cycling and creating temperature swings.
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MODEL NUMBER NOMENCLATURE OUTDOOR UNIT 38 MH R B Q 09 A A 3 VOLTAGE 1 =115-1-60 3 = 208/230-1-60 38 = OUTDOOR UNIT MH = MODEL VARIATIONS A = STANDARD UNIT TYPE R = OUTDOOR UNIT MAXIMUM NUMBER OF FAN COIL UNITS THAT CAN BE CONNECTED TO THE OUTDOOR UNIT A = 1:1 MAJOR SERIES NOMINAL CAPACITY 09 - 3/4 TON 12 - 1 TON 18 - 1-1/2 TONS 24 - 2 TONS SYSTEM TYPE C = COOLING ONLY Q = HEAT PUMP Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program For verification of ce
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STANDARD FEATURES AND ACCESSORIES Ease Of Installation Low Voltage Controls Comfort Features Microprocessor Controls Auto Restart Function Auto Changeover Energy Saving Features Inverter Driven Compressor 46°F Heating Mode (Heating Setback) Safety And Reliability 3 Minute Time Delay For Compressor High Compressor Discharge Temperature Low Voltage Protection Compressor Overload Protection Compressor Over Current Protection IPM Module Protection Condenser High Temp Protection in Cooling Mode Aluminum Golden H
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DIMENSIONS − OUTDOOR System Size Depth (D) in. (mm) Weight-Net lbs. (kg) 57.8(26.2) 12K (115V) 21.85(555) 30.31(770) 11.81(300) 12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 53.8(24.4) 18K (208/230V) 21.85 (555) 30.31 (770) 11.81 (300) 65.9 (29.9) 24K (208/230V) System Size 27.64(702) 33.27(845) 14.29(363) 88.6(40.2) Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg) 69(31.3) 12K (115V) 21.85(555) 30.31(770) 11.81(300) 9K (208/230V) 21.
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H 0.47 (1 2) 21.81 (554) DIMENSIONS − OUTDOOR (CONT) 20.24 (514) 13.11 (333) D W1 31.50 (800) 2.76 (7 0) W2 2.43 (6 1.8) B1 D3 H1 R0 3.37 (8 5.5) B2 13.39 (340) D2 12.24 (311) 12.80 (325) 2.36 (6 0) 4.17 (1 06) W . 79 (R 2 0) 0.87 (2 2) A1 R 0. 24 ( R 6) H2 2.43 (6 1.6) A2 Fig.
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DIMENSIONS − OUTDOOR (CONT) Unit: inch (mm) Fig.
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CLEARANCES − OUTDOOR A Air-inlet E D B C Air-outlet Fig. 4 – Outdoor Unit Clearance UNIT A MINIMUM VALUE in. (mm) 24 (610) B 24 (610) C 24 (610) D 4 (101) E 4 (101) NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth. 9.8in (25cm) or more for proper airflow 24in (61cm) or more is recommended for service 118in (300cm) or more 9.
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SPECIFICATIONS − OUTDOOR COOLING ONLY System Electrical Operating Range Piping Refrigerant Outdoor Coil Compressor Outdoor Size Outdoor Model Voltage, Phase, Cycle MCA MOCP - Fuse Rating Cooling Outdoor DB Min - Max Total Piping Length Piping Lift* Pipe Connection Size - Liquid Pipe Connection Size - Suction Type Charge Metering Device Face Area No. Rows Fins per inch Circuits Type Model Oil Type Oil Charge Rated Current Unit Width Unit Height Unit Depth Net Weight Airflow Sound Pressure V/Ph/Hz A.
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SPECIFICATIONS − OUTDOOR HEAT PUMP Size Outdoor Model Voltage, Phase, Cycle MCA MOCP - Fuse Rating V/Ph/Hz A. A. Cooling Outdoor DB Min - Max ° F (° C) Heating Outdoor DB Min - Max ° F (° C) Total Piping Length Piping Lift* Piping Pipe Connection Size - Liquid Pipe Connection Size - Suction Type Refrigerant Charge Metering Device Face Area No.
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COOLING PERFORMANCE DATA − (COOLING ONLY) Model 12 (115V) 12 (208-230V) 18 (208-230V) 24 (208-230V) Cooling Indoor Conditions DB WB 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.
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COOLING PERFORMANCE DATA − (HEAT PUMP) Model 12 (115V) 09 (208-230V) 12 (208-230V) 18 (208-230V) 24 (208-230V) Cooling Indoor Conditions DB WB 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.6F (27C) 66.2F (19C) 89.6F (32C) 73.4F (23C) 69.8F (21C) 59F (15C) 75.2F (24C) 62.6F (17C) 80.
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HEATING PERFORMANCE DATA − (HEAT PUMP) Model Heating Indoor Conditions 59F (15C) 12 (115V) 64.4F (18C) 69F (20.5C) 71.6F (22C) 59F (15C) 09 (208-230V) 64.4F (18C) 69F (20.5C) 71.6F (22C) 59F (15C) 12 (208-230V) 64.4F (18C) 69F (20.5C) 71.6F (22C) 59F (15C) 18 (208-230V) 64.4F (18C) 69F (20.5C) 71.6F (22C) 59F (15C) 24 (208-230V) 64.4F (18C) 69F (20.5C) 71.
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APPLICATION DATA UNIT SELECTION METERING DEVICES Select equipment that either matches or supports slightly more than the anticipated peak load. This provides better humidity control, fewer unit cycles, and less part−load operation. For units used in spaces with high sensible loads, base equipment selection on unit sensible load, not on total anticipated load. Adjust for anticipated room wet bulb temperature to avoid undersizing the equipment.
PAGE 15
WIRING All wires must be sized per NEC (National Electrical Code) or CEC (Canadian Electrical Code) and local codes. Use Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively. Recommended Connection Method for Power and Communication Wiring: The main power is supplied to the outdoor unit.
PAGE 16
AIR FLOW DATA 38MHRBC Unit Size Outdoor (CFM) 12K (115V) 1,170 38MHRBQ Unit Size Outdoor (CFM) COOLING ONLY 12K (208/230V) 1,230 HEAT PUMP 9K (208/230V) 1,170 12K (115V) 1,170 18K (208/230V) 1,195 12K (208/230V) 1,170 24K (208/230V) 1,825 18K (208/230V) 1,170 24K (208/230V) 1,765 SOUND DATA 38MHRBC Unit Size Outdoor Sound Pressure Level Outdoor Sound Power Level COOLING ONLY 12K (115V) 12K (208/230V) 52 53.6 63.3 63.
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ELECTRICAL DATA COOLING ONLY Power Supply Outdoor Unit Size 12K 12K 18K 24K Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V) Max – Min* Oper. Voltage 127-104 253-187 253-187 MCA 13 11 15 18 MOCP 20 15 20 25 RLA 9.5 6.8 9 12 FLA 0.6 0.5 0.6 0.6 Rated HP 0.054 0.054 0.054 0.
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FAN AND MOTOR SPECIFICATIONS 12K (115V) 38MHRB Unit Size Outdoor fan Outdoor fan motor 24K (208/230V) Acrylonitrile Styrene +20%GF Acrylonitrile Styrene +20%GF Acrylonitrile Styrene +20%GF - ZL-425*127*8-3KN ZL-425*127*8-3KN ZL-420*143*8-3KN ZL-490*151*12-3KN Diameter Inch (mm) 16.73 (425) 16.73 (425) 16.54 (420) 19.29 (490) Height inch 5 (127) 5 (127) 5.63 (143) 5.94 (151) V Hz A HP W W Amps Amps µF rev/min rev/min W ZKFN-40-8-1L 115 1 60 0.6 0.054 40 DC E IPX4 63 0.6±10% 0.
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WIRING DIAGRAMS (COOLING ONLY) Fig.
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WIRING DIAGRAMS (COOLING ONLY (CONTINUED)) Fig.
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WIRING DIAGRAMS (COOLING ONLY (CONTINUED)) Fig.
PAGE 22
WIRING DIAGRAMS (HEAT PUMP) Fig.
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WIRING DIAGRAMS (HEAT PUMP (CONTINUED)) Fig.
PAGE 24
WIRING DIAGRAMS (HEAT PUMP (CONTINUED)) Fig.
PAGE 25
GUIDE SPECIFICATIONS HORIZONTAL DISCHARGE OUTDOOR UNITS Size Range: 3/4 to 2 Ton Nominal Cooling and Heating Capacity Model Number: 38MHRB PART 1 − GENERAL 1.01 System Description A. Outdoor air−cooled split system compressor sections suitable for on−the−ground, rooftop, wall hung or balcony mounting. Units consist of a rotary compressor, an air−cooled coil, propeller−type draw−through outdoor fan, reversing valve (HP), accumulator (HP units), metering device(s), and a control box.
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Copyright 2018 Carrier Corporation D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 08/18 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.