Table of Contents
Advertisement
38MURA
Residential Single Zone Heat Pump System
Sizes 18 to 60
Fig. 1 -Sizes 18K, 18K HH, 24K, 24K HH, 30K,
30K HH, 36K
Fig. 2 -Sizes 36K HH, 48K, 48K HH, 60K, 60K HH
NOTES: Read the entire instruction manual before starting the
installation. Images are for illustration purposes only.
Actual models may differ slightly. HH Denotes High Heat
Models.
Installation Instruction
Specifications subject to change without notice.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS........................................................2
MODEL NUMBER AND ACCESSORIES.....................................3
DIMENSIONS..................................................................................4
CLEARANCES ................................................................................8
INSTALLATION REQUIREMENTS .............................................9
INSTALLATION .............................................................................9
Step 1 - Check Equipment ................................................................9
Step 2 - Mount Unit ..........................................................................9
Step 3 - Condensate Drain Installation .............................................10
Step 4 - Operating Ambient..............................................................10
Step 5 - Refrigerant Piping Connections ..........................................10
Step 7 - Evacuate Coil And Tubing System .....................................15
ELECTRICAL DATA......................................................................16
24V CONNECTION DIAGRAMS ..................................................16
START-UP .......................................................................................18
CARE AND MAINTENANCE........................................................18
TROUBLESHOOTING ...................................................................18
OUTDOOR UNIT DIAGNOSTIC GUIDES ...................................19
CROSSOVER SOLUTIONS............................................................20
PAGE
Advertisement
Table of Contents
Related Manuals for Carrier 38MURA
Summary of Contents for Carrier 38MURA
-
Page 1: Table Of Contents
38MURA Residential Single Zone Heat Pump System Sizes 18 to 60 Installation Instruction TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS............2 MODEL NUMBER AND ACCESSORIES........3 DIMENSIONS..................4 CLEARANCES ................8 INSTALLATION REQUIREMENTS ..........9 INSTALLATION ................9 Step 1 - Check Equipment ..............9 Step 2 - Mount Unit ................9 Step 3 - Condensate Drain Installation ..........10... -
Page 2: Safety Considerations
38MURA: Installation Instructions SAFETY CONSIDERATIONS WARNING Installing, starting up, and servicing air- conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). ELECTRICAL SHOCK HAZARD Only trained, qualified installers and service mechanics should install, Failure to follow this warning could result in personal injury or start- up, and service this equipment. -
Page 3: Model Number And Accessories
38MURA: Installation Instructions MODEL NUMBER AND ACCESSORIES The system is shipped with the following accessories. Use all of the NOTE: installation parts and accessories to install the system. Improper - If the outdoor unit is higher than the indoor unit, prevent rain... -
Page 4: Dimensions
38MURA: Installation Instructions DIMENSIONS Table 4 — Dimensions (208/230V) Packaging System Height (H) Width (W) Depth (D) Net Weight Height (H) Width (W) Depth (D) Net Weight Size in (mm) in (mm) in (mm) lbs. (kg) in (mm) in (mm) in (mm) lbs. - Page 5 38MURA: Installation Instructions DIMENSIONS (CONT) 4.81 [122.053] 35.23 [894.71 26.1 13.29 [663] [337.562] DETAIL A SCALE 2:1 2.82 35.06 2.89 [71.521] [890.603] [73.517] Fig. 5 — Sizes 18K HH / 24K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 6 38MURA: Installation Instructions DIMENSIONS (CONT) Fig. 6 — Sizes 24K HH / 30K / 30K HH / 36K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 7 38MURA: Installation Instructions DIMENSIONS (CONT) 38.4(976) 37.5(952) W 41(1045) W1 16.3(415) D 27.9(708) 2.9(74) 25(634) A 17.6(448) C 15.9(404) B Fig. 7 — Sizes 36K HH / 48K / 48K HH / 60K / 60K HH Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
-
Page 8: Clearances
38MURA: Installation Instructions CLEARANCES Air inlet Air outlet Fig. 8 — Clearances Table 5 — Clearance Dimensions MINIMUM VALUE UNIT IN. (MM) 24 (610) 24 (610) 24 (610) 4 (101) 4 (101) NOTE: The outdoor unit must be mounted at least 2in (50mm) above the maximum anticipated snow depth. -
Page 9: Installation Requirements
38MURA: Installation Instructions INSTALLATION REQUIREMENTS INSTALLATION • A location which is convenient to installation and not exposed to Step 1 - Check Equipment strong winds. Unpack the unit and move to the final location. Remove the carton, taking • A location which can bear the weight of the outdoor unit and where the outdoor unit can be mounted in a level position. -
Page 10: Step 3 - Condensate Drain Installation
38MURA: Installation Instructions Step 3 - Condensate Drain Installation NOTE: Images are for illustration purposes only. NOTE: Install drains must meet local sanitation codes. CAUTION Install the outdoor unit drain joint EQUIPMENT DAMAGE HAZARD Fit the seal into the drain joint, then insert the drain joint into the base pan In cold climates, ensure the drain hose is as vertical as possible to hole of the outdoor unit. - Page 11 38MURA: Installation Instructions IMPORTANT: The suction line must be insulated. Use refrigeration grade tubing ONLY. No other type of tubing may be used. Use of other types of tubing will void the 90° manufacturer's warranty. Oblique Rough Warped • The minimum refrigerant line length between the indoor and outdoor unit is 10 ft.
- Page 12 38MURA: Installation Instructions g. Turn the handle of the flaring tool clockwise until the pipe is fully flared. Flare the pipe in accordance with the dimensions in Table 8. CAUTION Wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite.
-
Page 13: Step 6 - Electrical Connections - Dip Switch Configuration
38MURA: Installation Instructions Step 6 - Electrical Connections - Dip Switch 8. Brazing Adapter (Optional) When flare to braze adapter is used, follow these steps: Configuration Refer to the liquid line and gas line connection O.D. sizes in Table 7 based on the model being installed. Cut and deburr the Install All Power and Interconnecting Wiring to tubing (review “Remove the Burrs on page 11.) to prepare it... - Page 14 38MURA: Installation Instructions 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 B W D respectively.
-
Page 15: Step 7 - Evacuate Coil And Tubing System
38MURA: Installation Instructions Step 7 - Evacuate Coil And Tubing System Evacuation Evacuation of the system will remove air or nitrogen (non-condensables) as CAUTION well as moisture. A proper vacuum will assure a tight, dry system before charging with refrigerant. The two methods used to evacuate a system are the deep vacuum method and the triple vacuum method. -
Page 16: Electrical Data
38MURA: Installation Instructions ELECTRICAL DATA Table 9 — Electrical Data 208/230-1-60 COOLING HEATING Maximum Minimum OUTDOOR Overcurrent MAX-MIN UNIT Circuit Running Power Running Power Protection VOLTAGE Power Factor Power Factor Ampacity Current Consumption Current Range Consumption Ampacity RANGE (MCA) (MOCP) - Page 17 38MURA: Installation Instructions W1/E W1/E THERMOSTAT THERMOSTAT W1 W2 C Y1 Y2 B W D C Y1 Y2 B W D W1 W2 INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OU TDOOR UNIT Fig. 31 —Wiring for 3H and 2C Thermostat Fig.
-
Page 18: Start-Up
38MURA: Installation Instructions START-UP CARE AND MAINTENANCE Test Operation To help ensure high performance and minimize possible equipment failure, periodic maintenance must be performed on this equipment. Perform a test operation after completing a gas leak and electrical safety Maintenance frequency may vary depending upon geographic areas. -
Page 19: Outdoor Unit Diagnostic Guides
38MURA: Installation Instructions OUTDOOR UNIT DIAGNOSTIC GUIDES For ease of service, systems are equipped with diagnostic code display LEDs on the indoor and outdoor units. Outdoor diagnostic is displayed on the outdoor unit microprocessor board. There may be a few error codes displayed in the indoor unit that might relate to the outdoor unit's problems. If possible, always check the diagnostic codes displayed on the indoor unit first. -
Page 20: Crossover Solutions
For AHRI ratings certificates, refer to the AHRI directory http://www.ahridirectory.org. Additional ratings and system combinations can be accessed via the Carrier database at: www.MyCarrierRatings.com. © 2022 Carrier. All rights reserved.
Need help?
Do you have a question about the 38MURA and is the answer not in the manual?
Questions and answers
Quel est le wattage requis pour le 38MURAQ24XB3
The Carrier 38MURAQ24XB3 corresponds to the 24K model. According to the electrical data, the power consumption for cooling is 2120W, and for heating, it is 2150W.
This answer is automatically generated