Williamson-Thermoflo 9SRA-HE Supplement
R-410A
This system uses
M00036-V00
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 an
important part of your job to install or service the system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electric codes.
• Pay close attention to all danger, warning, and caution notices given in this manual.
WARNING:
This symbol refers to a hazard or unsafe practice, which can result in severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice, which can result in personal injury and the potential for product or
property damage.
Caution:
In order to avoid injury, take proper precaution when lifting heavy objects.
Electrical
Safety / alert
Caution:
Sharp sheet metal edges can cause injury. When installing the unit, avoid accidental contact with
sharp edges.
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 connections 9
Refrigerant R410A: special precautions when installing unit 10
Tightening refrigerant piping connections 11
System evacuation 12
Additional charge 13
Gas leak check 14
Checking and testing operation 15
Technical specifications 16
Outline and dimensions 17
Parts diagram (indoor unit) 18
Parts list (indoor unit) 19
Parts diagram (outdoor unit) 20
Parts list (outdoor unit) 21
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, read
these instructions and any instructions that are packaged with separate pieces of equipment that make up the system.
Please read these instructions thoroughly and carefully before attempting installation or operation. Failure to follow these
instructions may result in improper installation, operation, service, or maintenance, possibly resulting in fire, electrical
shock, property damage, personal injury, or death.
General:
This device must be installed in compliance with national electrical standards.
About the indoor unit
1. There must be no obstacles near the air inlet and outlet.
2. Install the indoor unit on a surface that can support its weight.
3. Choose a position that enables the piping and wiring to be easily connected to the outdoor unit.
4. Leave enough clearance beneath the indoor unit to enable the filters to be removed without hinderance.
5. Maintain sufficient clearance around the indoor unit.
6. Make sure that the water from the drain hose runs away correctly and safely.
7- Install the indoor unit on a strong wall which is not subject to vibration.
8- Do NOT install the unit where it will be exposed to direct sunlight.
About outdoor unit
1. The outdoor unit must NEVER be placed on its side or upside down, as the compressor lubrication oil will run in the
cooling circuit and seriously damage the unit.
3. Choose a location where the noise of the air conditioner when running and the discharged air do not disturb any neighbors.
4. Choose a position that enables the piping and wiring to be easily connected to the indoor unit.
5. Install the outdoor unit on a flat, stable surface that can support its weight and does not generate any unnecessary
noise and vibration.
6. Position the outdoor unit so that the air flow is directed away from exterior walls, as indicated by the arrows on the top
of the unit.
7. Maintain sufficient clearance around the outdoor unit.
8. If the outdoor unit is installed above grade with brackets, ensure that its base is firmly fixed in position.
Installation& service manual _1
SAFETY CONSIDERATIONS
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)
Service manual (1)
Warranty (1)
Rubber leg (4)
Interconnecting wiring and conduits
from the outdoor unit to the indoor unit
are not provided with the air conditioner.
Wall plastic sleeve (1)
Accessories in the Outdoor Unit Case
Installation & service manual _2
ACCESSORIES
1. Before fixing the installation plate to a wall, you must determine the position of the 2 3
/
4in (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 indoor unit.
2. Determine the position of the pipe and drain hose hole using one of the figures shown, and drill the hole with an inner
diameter of 70 mm (2 3
/
4inch) so that it slants slightly downwards.
3. The correct mounting of the indoor unit is as shown below.
CORRECT
INCORRECT
POSITION THE MOUNTING PLATE LEVEL
CORRECT INCORRECT INCORRECT
Right side 2 in
minimum
Left side 2 in
minimum
59 to 79 in
minimum
59 in minimum
2 3/8 in minimum
Caution:
Take servicing into consideration and leave the spacing shown in the figure above. Also install the unit where
it can be removed.
Installation & service manual _3
INSTALLATION RECOMMENDATIONS (INDOOR 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 their window
or by noise.
- Provide enough space between the wall and the unit, so that the airflow is not blocked. Also, for efficient
operation, leave enough clearance on both sides and front.
24 in minimum
9 in minimum
16 in minimum
24 in minimum
12 in minimum
Air inlet
Air outlet
A
B
Installation & service manual _4
INSTALLATION RECOMMENDATIONS (OUTDOOR UNIT)
12SRAO-HE | 15SRAO-HE
21 3/8
13
18SRAO-HE 24SRAO-HE
13 3/8
25 24 3/8
15
23
15
A (in)
B (in)
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 shall be used for the power supply to the air conditioner.
4. Interconnecting wiring and conduits from the outdoor unit to the indoor unit are not provided with the air conditioner.
5. The supply voltage, size of over current protective device, and size of supply conductors for the air conditioner are as
shown below.
6. Unit must be installed in accordance with all applicable federal, state and local codes.
7. Check local electrical codes and regulations before obtaining wire.
8. Use copper supply wires only.
9. Each wiring connection must be done tightly and in accordance with the wiring system diagram. Improper wiring may
cause the unit to malfunction or become damaged.
Installation & service manual _5
ELECTRICAL INSTALLATION
BTU
3 2 1
Terminal block of indoor unit
3 2 1L1 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 CONTROL BOARD
DISPLAY AND
RECEIVE BOARD
COMPULSIVE SWITCHING
TEMP SENSOR
PIPE SENSOR
IN FAN
STEP
MOTOR
FUSE
3.15 A
INDOOR UNIT WIRING DIAGRAM
2
2
2
5
5
9
L1
N
1
2
3
1
2
3
OUT
FAN
COMPRESSOR
HIGH
PRESSURE
SWITCH
LOW
PRESSURE
SWITCH
FUSE
3.15 A
BN
WH
BU
BU
BN
OR CMU
ACN COM
NO
OUTDOOR CONTROL BOARD
OUTDOOR TEMP SENSOR
CAPACITOR
RD
C
R
S
5
2
PROTECTOR
OUTDOOR UNIT WIRING DIAGRAM
INDOOR UNIT
OUTDOOR PIPE SENSOR
2
9SRA-HE | 12SRA-HE | 15SRA-HE (115V - 60Hz)
INDOOR UNIT
OUTDOOR UNIT
Installation & service manual _7
WIRING SYSTEM DIAGRAMS
3 2 1
Terminal block of indoor unit
3 2 1L1 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 CONTROL BOARD
DISPLAY AND
RECEIVE BOARD
COMPULSIVE SWITCHING
TEMP SENSOR
PIPE SENSOR
IN FAN
STEP
MOTOR
FUSE
3.15 A
INDOOR UNIT WIRING DIAGRAM
2
2
2
5
5
9
L1
L2
1
2
3
1
2
3
OUT
FAN
COMPRESSOR
HIGH
PRESSURE
SWITCH
LOW
PRESSURE
SWITCH
FUSE
3.15 A
BN
WH
BU
BU
BN
OR CMU
ACN COM
NO
OUTDOOR CONTROL BOARD
OUTDOOR TEMP SENSOR
CAPACITOR
RD
C
R
S
5
2
PROTECTOR
OUTDOOR UNIT WIRING DIAGRAM
INDOOR UNIT
18SRA-HE | 24SRA-HE (208-230V - 60Hz)
INDOOR UNIT
OUTDOOR UNIT
Other manuals for 9SRA-HE
1
This manual suits for next models
4
Table of contents
Other Williamson-Thermoflo Air Conditioner manuals
Popular Air Conditioner manuals by other brands
Fujitsu
Fujitsu Inverter ASBA30JFC operating manual
Toshiba
Toshiba RAS-M10SMUV-E installation manual
Daikin
Daikin FXLQ20MAVE Operation manual
Hitachi
Hitachi RAS-E24CAK instruction manual
CIAT
CIAT Magister 2 Series Installation, Operation, Commissioning, Maintenance
Bestron
Bestron AAC6000 instruction manual
