Carrier 38MGQ Installation Instructions Manual

Multi-zone ductless system sizes 18k, 24k, 30k, 36k and 48k

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Service manual (76 pages)

Installation instructions manual (18 pages)

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Page 1: Table Of Contents
38MGQ / 40MAQ / 40MBC / 40MBD / 40MBF Multi---Zone Ductless System Sizes 18K, 24K, 30K, 36K and 48K Installation Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS ......
Page 2: Safety Considerations
SAFETY CONSIDERATIONS WARNING Installing, starting up, and servicing air- -conditioning equipment can be hazardous due to system pressures, electrical components, ELECTRICAL SHOCK HAZARD and equipment location (roofs, elevated structures, etc.). Failure to follow this warning could result in personal Only trained, qualified installers and service mechanics should injury or death.
Page 3: Piping Requirements
PIPING REQUIREMENTS IMPORTANT: Both refrigerant lines must be insulated separately. The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). The following lengths are allowed. Table 1—Piping Lengths System size Min. Piping Length per each indoor unit ft (m) 10 (3) 10 (3)
Page 4: Electrical Data
ELECTRICAL DATA Table 8—High Wall SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FAN UNIT SIZE VOLT / PHASE / HZ MAX / MIN V--- PH --- HZ 0.07 0.027 0.07 0.027 208 ---230/1/60 253 / 187 208 ---230/1/60 0.17 0.077 0.23 0.08 0.23 0.08 Table 9—Ducted...
Page 5 All wires must be sized per NEC (National Electrical Code) or CAUTION CEC (Canadian Electrical Code) and local codes. Use the Electrical Data table MCA (minimum circuit amps) and MOCP EQUIPMENT DAMAGE HAZARD (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively.
Page 6: Dimensions 6
DIMENSIONS - - INDOOR Fig. 1 --- High Wall Dimensions Table 13—High Wall Dimensions OPERATING WEIGHT UNIT SIZE W In. (mm) D In. (mm) H In. (mm) Lbs. (kg) 9K/12K 32.9(835) 7.8(198) 11.0(280) 19.2(8.7) 39.0(990) 8.6(218) 12.4(315) 26.5(12.0) 46.7(1186) 10.2(258) 13.4(343) 40.8(18.5) Fig.
Page 7: Dimensions
DIMENSIONS - - INDOOR (CONTINUED) Fig. 3 --- Ducted Dimensions Table 15—Ducted Dimensions OPERATING AIR OUTLET AIR RETURN HANGAR REFRIGERANT PIPE WEIGHT OUTLINE DIMENSIONS OPENING SIZE OPENING SIZE BRACKETS LOCATIONS Lbs. (kg) in(mm) in(mm) in(mm) in(mm) in(mm) in(mm) SIZE 27.6 22.4 19.4 23.4...
Page 8 DIMENSIONS - - INDOOR (CONTINUED) Fig. 4 --- Floor Console Dimensions Table 16—Floor Console Dimensions UNIT SIZE Height in (mm) 8.27 (210) 8.27 (210) Width in (mm) 27.56 (700) 27.56 (700) Depth in (mm) 23.62 (600) 23.62 (600) Operating Weight Lbs.
Page 9: Dimensions/Outdoor
DIMENSIONS - - OUTDOOR Table 17— Dimensions UNIT SIZE Height in (mm) 27.56(700) 31.89(810) 31.89(810) 36.93(1369) Width in (mm) 33.27(845) 37.20(945) 37.20(945) 53.9(938) Depth in (mm) 12.60(320) 15.55(395) 15.55(395) 15.43(392) Weight ---Net lbs (kg) 114.63(52) 154.76(70.2) 169.75(77) 255.50(115.9) Fig. 5 --- Outdoor Dimensions Size 18 NOTE: No master valves available on Size 18K.
Page 10 DIMENSIONS - - OUTDOOR (CONTINUED) Suction Fig. 6 --- Outdoor Dimensions Size 27...
Page 11 DIMENSIONS - - OUTDOOR (CONTINUED) Suction Fig. 7 --- Outdoor Dimensions Size 36...
Page 12 DIMENSIONS - - OUTDOOR (CONTINUED) Suction Fig. 8 --- Outdoor Dimensions Size 48...
Page 13 CLEARANCES - - INDOOR NOTE: Allow sufficient space for airflow and unit servicing. See Fig. 9 through 14 for minimum required clearances. CEILING 6" (0.15m) min. 5" 5" (0.13m) (0.13m) min. min. (1.8m) FLOOR Fig. 9 --- High Wall Clearance Fig.
Page 14: Clearances
CLEARANCES - - INDOOR (CONTINUED) 39.4in /1000mm 9.8in /250mm 7.9in 19.7in 3.9in /200mm /500mm /100mm 9.8ft Fig. 11 --- Ducted Clearance Fig. 12 --- Ducted Clearance Fig. 13 --- Floor Console Clearances...
Page 15 CLEARANCES - - OUTDOOR Air-inlet Air-outlet Fig. 14 --- Clearances Outdoor Table 18— Clearances Outdoor Values MINIMUM VALUE UNIT in. (mm) 24 (609) 24 (609) 24 (609) 4 (101) 4 (101)
Page 16: Installation Guide
INSTALLATION GUIDE Up to five fan coil units can be connected to one outdoor unit. Refer to the Product Data for approved combinations. Ideal installation locations include: Each Indoor Unit S A location where there are no obstacles near inlet and outlet area. S A location which can bear the weight of indoor unit.
Page 17 INSTALL ALL POWER, INTERCONNECTING 10. Connect the refrigerant piping and the drain line outside of the indoor unit. Complete the pipe insulation at the flare WIRING, AND PIPING TO INDOOR UNIT connection then fasten piping and wiring to the wall as 1.
Page 18: Cassette Indoor Unit Installation
CASSETTE INDOOR UNIT INSTALLATION Select install location of the indoor unit 1. Obstructions should be removed from the indoor unit’s intake or outlet vents so the air can flow throughout the room. 2. Make sure the installation is in accordance with the requirements of the required clearances on the schematic diagram.
Page 19: Indoor Unit Installation
Fig. 27 --- Installation Clearances Fig. 29 --- Attach Screws (1.) Ceiling slab (1.) Paper pattern for installation (on some models) (2.) Expansible hook (optional) (2.) Center of the ceiling opening (3.) Installation hook (optional) (3.) Screws (supplied with the decoration panel) (4.) False ceiling 3.
Page 20 Install the Drain Pipes Use the drain hose and clamp attached. Insert the drain hose into the drain vent, and then tighten the clamp. Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air may not remain Entwine the big sponge on the clamp of drain hose to trapped inside the pipe.
Page 21 2. Check the smoothness of the drain after the installation. 3. Check the drain state by immitting 36 3/5 in. 3 (600 cc) water slowly from the outlet vent or test hole. 4. Check the drain in the state of refrigerating after installing the electric circuit.
Page 22: Installation Of The Decoration Panel
INSTALLATION OF THE DECORATION PANEL 3. After installing the decoration panel, ensure that there is no space between the unit body and decoration panel. Otherwise Detach the intake grill air may leak through the gap and cause dewdrop (see Fig. 44). 1.
Page 23: Test Operation
Grille Louver Motor Power. Grille Display 5 Pin Port 10 Pin Port Wired Remote Controller Grille Display. (Available as Accessory) 10 pin Molex plug to be 5 Pin Molex plug to be connected to Control Board. connected to Wired Controller’s cable Grille Louver Motor Power.
Page 24: Ducted Indoor Units Installation
5. Check the following points. If there is any malfunction, Hanger bolt Air conditioning unit resolve it according to the chapter “Troubleshooting” in the owner’s manual. Owners Manual The indoor unit - -Whether the switch on the remote controller works well. Anchor - -Whether the buttons on the remote controller works well.
Page 25 AIR SUPPLY DUCT INSTALLATION ROUND AIR SUPPLY DUCT INSTALLATION STEPS 1. Installation of the Rectangular Air Supply Duct 1. Pre- -install the outlet of the round duct on the transition duct and then secure it with the tapping screw. 2. Place the transition duct to the air outlet of the unit and secure it with a rivet.
Page 26: Adjust Air Inlet
ADJUST AIR INLET Take off the ventilation panel and flange, cut off the staples at the side rail. When installing the fi lter mesh, please plug it into flange Once the filter mesh, with the fixing blocks have been inclined from the air return ope ning, and then push up. inserted into the flange position holes, the installation is complete.
Page 27: Drain Pipe Installation
CONDENSATE PIPE INSTALLATION DRAIN PIPE INSTALLATION 1. The condensate pipe should keep a inclination angle of 5 ~ 1. The diameter of the drain pipe should be larger than or 10”, to facilitate the drainage of the condensate water. And equal to that of the refrigerant pipe (PVC pipe, outer the joints of the condensate pipe should be insulated by the ...
Page 28: Fan Performances (Ducted Units)
FAN PERFORMANCES (DUCTED UNITS) Static pressure curve (static pressure deducted) Table 22—Fan Performances Static Pressure Range In. WG (Pa) Size 9 & 12 0.02 (5) 0.04 (10) 0.08 (20) 0.12 (30) 0.16 (40) 0 ---0.18 (0 ---45) 0.04 (10) 0.10 (25) 0.14 (35) 0.18 (45) 0.22 (55)
Page 29 Size 9K...
Page 30 Size 12K...
Page 31 Size 18K...
Page 32 Size 24K...
Page 33: Floor Console Indoor Unit Installation
FLOOR CONSOLE INDOOR UNIT CAUTION INSTALLATION The suggested shortest pipe length is 8.2 ft. (2.5 m) to avoid Follow these key steps when selecting a location for the unit. noise from the outdoor unit and vibration. (Mechanical Select a place where cool air can be distributed throughout noise and vibration may occur depending on how the unit is the room.
Page 34: Installing The Indoor Unit
INSTALLING THE INDOOR UNIT For Side Piping Remove the pillars. 1. Preparation (1.) Remove the screws. Open the front panel, remove the 4 screws and dismount (2.) Remove the upper casing (2 tabs). the front grille while pulling it forward. (3.) Remove the left and right casings (2 tabs on each side).
Page 35: Outdoor Unit Installation
OUTDOOR UNIT INSTALLATION The mounting plate should be installed on a wall which can support the weight of the indoor unit. 1. Use a rigid base to support unit in a level position. (1.) Temporarily secure the mounting plate to the wall, 2.
Page 36: Connection Diagrams
Piping Guide: INSTALL ALL POWER AND INTERCONNECTING WIRING TO OUTDOOR UNIT S Do not open service valves or remove protective caps from tubing ends until all the connections are made. 1. Mount outdoor power disconnect. S Bend tubing with bending tools to avoid kinks and flat spots. 2.
Page 37 SYSTEM VACUUM AND CHARGE Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of CAUTION pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and UNIT DAMAGE HAZARD liquid water (see Fig.
Page 38: Start- -Up
START- -UP INDOOR UNIT 1. Do all Remote Control buttons function properly? Test Operation 2. Do the display panel lights work properly? Perform test operation after completing gas leak and electrical safety check. 3. Does the air deflection louver function properly? 4.
Page 39: Connection Diagrams
CONNECTION DIAGRAMS Fig. 80 --- Connection Diagram Size 18 Fig. 81 --- Connection Diagram Size 27...
Page 40 CONNECTION DIAGRAMS (CONT) Fig. 82 --- Connection Diagram Size 36 Fig. 83 --- Connection Diagram Size 48 Notes: 1. Do not use thermostat wire for any connection between indoor and outdoor units. 2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.
Page 41: Outdoor Unit Diagnostic Guides
Table 25—Indoor Unit Error Display OPERATION TIMER LAMP DISPLAY LED STATUS LAMP ☆ Indoor unit EEPROM error 1 time ☆ 2 times Communication malfunction between indoor and outdoor units. 4 times Indoor fan speed has been out of control ☆ 5 times Indoor room temperature sensor T1 open circuit or short circuit ☆...
Page 42 Catalog No: 38MGQ---02SI Copyright 2015 Carrier Corporation. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 10/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces:38MG--- 40MA--- MB--- 01SI...

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Carrier 38MGQ Installation Instructions Manual

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