Page 2 - Installation & service manual; IMPORTANT! Please Read Before Starting; Electrical
Installation & service manual IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is animportant part of your job to install or service the system so it operates safely and efficiently. For safe i...
Page 3 - CONTENTS
Installation & service manual CONTENTS Safety considerations 1 Accessories 2 Installation recommendations (indoor unit) 3 Installation recommendations (outdoor unit) 4 Electrical installation 5 Wiring system diagram 6_7 Electrical connections for indoor and outdoor units 8 Refrigerant line conne...
Page 4 - About the indoor unit; SAFETY CONSIDERATIONS
This manual is a guide for properly installing the Williamson-Thermoflo Wall-mounted split air conditioner. Improper installation can result in unsafe and dangerous conditions that will void the factory warranty. Prior to installation, readthese instructions and any instructions that are packaged wi...
Page 5 - Accessories in the Indoor Unit Case; ACCESSORIES
The following accessories are supplied with the air conditioner.• The quantities are indicated in parenthesi s. Installation plate (1) Remote control (1) “AAA” batteries for remote control (2) Remote control holder (1) Accessories in the Indoor Unit Case Owner’s manual (1) Installation manual (1) Se...
Page 6 - POSITION THE MOUNTING PLATE LEVEL; INSTALLATION RECOMMENDATIONS (INDOOR UNIT)
1. Before fixing the installation plate to a wall, you must determine the position of the 2 3 / 4 in (70 mm) hole through which the conduit, piping and drain hose pass to connect the indoor unit to the outdoor unit. The piping and conduit can be con-nected from the: Rear, Right or Left side of indoo...
Page 7 - Air outlet; INSTALLATION RECOMMENDATIONS (OUTDOOR UNIT)
Attach the outdoor unit with 4 anchor bolts and nuts (not supplied) positioned as per dimensions A, B. 9SRAO-HE Caution: The outdoor unit should not be exposed to strong winds or where it is very dusty.- Take your neighbors into consideration so that they will not be disturbed by air blowing into th...
Page 8 - ELECTRICAL INSTALLATION
1. The air conditioner shall be installed by a qualified technician in accordance with national and local electrical codes.2. A disconnect switch shall be installed near the outdoor unit for easy disconnect of power to the air conditioner. 3. An electrical circuit dedicated to the air conditioner sh...
Page 9 - WIRING SYSTEM DIAGRAMS; INDOOR UNIT
3 2 1 Terminal block of indoor unit 3 2 1 L1 N Terminal block of outdoor unit Power supply, 1 phase, 60 Hz INDOOR UNIT OUTDOOR UNIT Installation & service manual _6 WIRING SYSTEM DIAGRAMS Ground wire ACN wire ACL wire Communication wire L1 N 1 2 3 1 2 3 OUTDOOR UNIT BU BN OR ACN ACL CMU INDOOR C...
Page 10 - Terminal block of indoor unit
Installation & service manual _7 WIRING SYSTEM DIAGRAMS 3 2 1 Terminal block of indoor unit 3 2 1 L1 L2 Terminal block of outdoor unit Power supply, 1 phase, 60 Hz INDOOR UNIT OUTDOOR UNIT Ground wire ACN wire ACL wire Communication wire L1 L2 1 2 3 1 2 3 OUTDOOR UNIT BU BN OR ACN ACL CMU INDOOR...
Page 11 - Figure B; ELECTRICAL CONNECTIONS FOR INDOOR AND OUTDOOR UNITS; Figure A
1. The indoor unit is powered from the outdoor unit. A sufficient length of conduit and wiring shall be used from the outdoor unit to the indoor unit. 2. To access the terminal block inside the indoor unit, remove the screw on the cover plate. (See Fig. A.) 3. Connect the inter unit conductors to te...
Page 12 - When connecting the refrigerant tubing; - Keep all tubing runs as short as possible.; Indoor unit; REFRIGERATION LINE CONNECTIONS
When connecting the refrigerant tubing - Keep all tubing runs as short as possible. - Use the flare method for connecting tubing. - Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tightenthe nut with a torque wrench for a leak-free conne...
Page 13 - REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN INSTALLING UNIT; General Information
Installation & service manual _10 REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN INSTALLING UNIT General Information Systems using R-410A refrigerant run at a pressure of approximately 1.6 times that of similar systems using R-22 and theenergy efficiency is comparable. The R-410A refrigerant is a 5...
Page 14 - TIGHTENING REFRIGERANT PIPING CONNECTIONS; Applicable size
Installation & service manual _11 TIGHTENING REFRIGERANT PIPING CONNECTIONS Caution: Remove the protection caps on the pipes and connect the assembly piping to each connector. First, tighten the nuts manually and then with a wrench by applying the tightening torque shown below. 17 x 14 to 18 22 ...
Page 15 - SYSTEM EVACUATION; Manifold valve; Refrigerant must not be discharged into the atmosphere.
Installation & service manual _12 SYSTEM EVACUATION Condensing unit liquid and suction valves are closed to contain the charge within the unit. The unit is shipped with the valvestems closed and caps installed. Do not open the valves until the system is evacuated. 1. Connect the vacuum pump with...
Page 16 - ADDITIONAL CHARGE AND DISTANCE; Limit of tubing length; Additional refrigerant
Installation & service manual _13 ADDITIONAL CHARGE AND DISTANCE Refrigerant suitable for a piping length of 20 ft (6 m) is charged in the outdoor unit at the factory. When the pipe is longerthan 20 ft (6 m), additional charging is necessary. This operation can only be performed by a qualified r...
Page 17 - GAS LEAK CHECK; A and B are the liquid and suction valves of the outdoor unit.
Installation & service manual _14 GAS LEAK CHECK Check that no gas escapes from the connections by using a leak detector or soapy water. A and B are the liquid and suction valves of the outdoor unit. C and D are the extremities of the indoor unit flared connections. Indoor unit check points B A ...
Page 18 - CHECKING AND TESTING OPERATIONS
Installation & service manual _15 CHECKING AND TESTING OPERATIONS Perform the operation test after completing the gas leak check of the flare nut connections and the electrical connections. 1. To begin the test, turn on the power.2. Press the auxiliary control button in the indoor unit or use th...
Page 19 - TECHNICAL SPECIFICATIONS; SPECIFICATIONS
Installation & service manual _16 TECHNICAL SPECIFICATIONS SPECIFICATIONS *Note: Design and specifications are subject to change without notice for product improvement. Comply with ARI STANDARD 210/240. CoolingCooling MaximumMinimumMaximumMinimum Cooling LiquidSuction WidthHeightDepthShippingNet...
Page 20 - OUTLINE AND DIMENSIONS
In AB C D E F GH I Models: 9SRA-HE | 12SRA-HE | 15SRA-HE | 18SRA-HE | 24SRA-HE Indoor unit Outdoor unit A F B D E H I G C Installation & service manual _17 OUTLINE AND DIMENSIONS 9SRA-HE 10 7/8 31 1/2 8 1/4 31 3/4 11 23 1/2 11 1/4 14 1/8 12SRA-HE 10 7/8 31 1/2 8 1/4 33 7/8 12 25 5/8 12 14 3/4 15...
Page 21 - INSIDE UNIT
Installation & service manual _18 PARTS DIAGRAM (INDOOR UNIT) INSIDE UNIT 9SRAI-HE 12SRAI-HE15SRAI-HE18SRAI-HE24SRAI-HE
Page 23 - OUTSIDE UNIT
Installation & service manual _20 PARTS DIAGRAM (OUTDOOR UNIT) OUTSIDE UNIT 9SRAO-HE12SRAO-HE15SRAO-HE18SRAO-HE24SRAO-HE
Page 25 - NOTE
