GREE ELECTRIC U Match UMAT18HP230V1AD User manual

Models:
Indoor Unit Outdoor Unit
UMAT18 P230V1AD UMAT18 P230V1AO
UMAT24 P230V1AD UMAT24 P230V1AO
UMAT30 P230V1AD UMAT30 P230V1AO
UMAT36 P230V1AD UMAT36 P230V1AO
UMAT42 P230V1AD UMAT42 P230V1AO
UMAT48 P230V1AD UMAT48 P230V1AO
S IM CONCEA ED DUCT
AIR CONDITIONING & HEATING SYSTEM
INSTA ATION MANUA

Thank you for choosing a
Slim Concealed Duct
unit for your customer.
Please read this installation manual carefully before installing and starting up the
U-Match System. Take a moment to fill out the product and installation form on the
back cover. Retain both the manual and installation record for future reference.
Table of Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Suggested Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standard Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation Site Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 9
Indoor Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12
Outdoor Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-14
Piping Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-19
Ductwork Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-22
Power and Wiring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25
Controller Installation and setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-27
Testing and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-30
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-32
Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-36
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

SAFETY PRECAUTIONS
Please read the following before installation.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
This mark indicates procedures which, if improperly performed,
might lead to the death or serious injury of the user.
This mark indicates procedures which, if improperly performed, might
possibly result in personal harm to the user, or damage to property.
Notice is used to address practices not related to personal injury.
General Safety Precautions
1. Instructions for installation and use of this product are provided by the manufacturer.
For proper operation, the system must be installed in accordance with this
installation manual.
2. Installation must be performed in accordance with local laws, regulations and
National Electrical Codes (NEC).
3. If refrigerant leaks while work is being carried out, ventilate the area. Do not allow
refrigerant to come in contact with a flame as it produces toxic gas.
4. Disconnect all electrical power to the indoor and outdoor units until the system is
ready for start-up and checkout.
5. When installing or repairing the system, use only R410A refrigerant. Do not
mix refrigerant with other gases. If air or other gas enter the refrigeration system,
the pressure inside the system may rise to an abnormally high value and cause
damage or injury.
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
WARNING
CAUTION
NOTICE
2
WARNING

3
Indoor unit
Outdoor unit
NOMENC ATURE
UMAT 18 1 A D
Series Designation
UMAT – U-Match Series
Product Type
S- System
O - Outdoor Units
H- Indoor High Wall
D - Indoor Duct
C - Indoor Cassette
F - Indoor Floor/Ceiling
Revision Level
Style/Color Designation
Electrical Rating
230V - 208/230V60Hz 1PH
115V- 115V 60Hz 1PH
HP 230V
Cooling Capacity
18 - 18,000 BtuH
24 - 24,000 BtuH
30 - 30,000 BtuH
36 - 36,000 BtuH
42 - 42,000 BtuH
48 - 48,000 BtuH
Model Type
AC - Cooling Only
HP - Heat Pump
HC - Heat/Cool
Example: UMAT18HP230V1AD
UMAT 18 1 A O
Series Designation
UMAT – U-Match Series
Product Type
S - System
O - Outdoor Units
H - Indoor High Wall
D - Indoor Duct
C - Indoor Cassette
F - Indoor Floor/Ceiling
Revision Level
Style/Color Designation
Electrical Rating
230V - 208/230V 60Hz 1PH
115V - 115V 60Hz 1PH
HP 230V
Cooling Capacity
18 - 18,000 BtuH
24 - 24,000 BtuH
30 - 30,000 BtuH
36 - 36,000 BtuH
42 - 42,000 BtuH
48 - 48,000 BtuH
Model Type
AC - Cooling Only
HP - Heat Pump
HC - Heat/Cool
Example: UMAT18HP230V1AO

SYSTEM REQUIREMENTS
REFRIGERANT CHARGE
INDOOR UNIT E ECTRICA REQUIREMENTS
PIPE SIZE in (mm)
Notes: Insulate both refrigerant lines, separately.
Communication Cable: Recommended cable - 18/2 AWG stranded bare copper conductors
300V unshielded wire Note: Use shielded cable if installation is in close proximity of RF and EMI
transmitting devices.
Unit Size
(BtuH)
18,000 1/4 (6) 1/2 (12) 10 (3) 25(7.5) 66 (20) 49 (15)
24,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5) 98 (30) 49 (15)
30,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5) 98 (30) 49 (15)
36,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5) 98 (30) 49 (15)
42,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5) 164 (50) 98 (30)
48,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5) 164 (50) 98 (30)
Min ine
Max. Pre-Charge
Max ine Max Elevation
ength ine ength ength (ID over OD)
iquid Suction/Gas
ine ine
Unit Size Refrigerant Factory System Additional
(BtuH) Type Charge oz (kg)* Charge oz/ft (g/m)
18,000 R410A 49.4 (1.4) 0.3 (30)
24,000 R410A 78.4 (2.2) 0.6 (60)
30,000 R410A 84.6 (2.4) 0.6 (60)
36,000 R410A 123.2 (3.6) 0.6 (60)
42,000 R410A 131.2 (3.8) 0.6 (60)
48,000 R410A 141.8 (4.1) 0.6 (60)
Unit Size Voltage Min Circuit Max Overcurrent Main Power
(BtuH) Amps (MCA) Protection (MOCP) Wire Size (AWG)
18,000 208/230v - 1ph 60hz 1.0 15 14
24,000 208/230v - 1ph 60hz 2.0 15 14
30,000 208/230v - 1ph 60hz 2.0 15 14
36,000 208/230v - 1ph 60hz 3.0 15 14
42,000 208/230v - 1ph 60hz 3.0 15 14
48,000 208/230v - 1ph 60hz 5.0 15 14
OUTDOOR UNIT E ECTRICA REQUIREMENTS
Unit Size Voltage Min Circuit Max Overcurrent Main Power
(BtuH) Amps (MCA) Protection (MOCP) Wire Size (AWG)
18,000 208/230v - 1ph 60hz 17.0 25 10
24,000 208/230v - 1ph 60hz 24.0 40 10
30,000 208/230v - 1ph 60hz 24.0 40 10
36,000 208/230v - 1ph 60hz 29.0 45 8
42,000 208/230v - 1ph 60hz 31.0 50 8
48,000 208/230v - 1ph 60hz 45.0 70 6
*Precharge amount for up to 25-ft of refrigerant pipe.
REFRIGERANT INE ENGTHS ft (m)
4

• Standard Wrench
• Adjustable/Crescent Wrench
• Torque Wrench
• ex Keys or Allen Wrenches
• Drill & Drill Bits
• ole Saw
• Pipe Cutter
• Screw drivers (Phillips & Flat blade)
• Manifold and Gauges
• Level
• R410A Flaring Tool
• Clamp on Amp Meter
• Vacuum Pump
• Safety Glasses
• Work Gloves
• Refrigerant Scale
• Micron Gauge
SUGGESTED TOO S
5

SYSTEM SCHEMATIC
Indoor Unit
System Components*
1.Indoor Power Supply
2.Electric Box
3.Communication Cable
4.XK60 Wired Programmable Controller
5.Communication Cable
6.Front Panel
7.Service Cover
8.Liquid Pipe
9.Gas Pipe
10.Drain ose
11.Outdoor Power Supply
Outdoor Unit
3
1
Air outlet
Air outlet
Air inlet
2
10 9 87 11 6
The refrigerant pipe, drain pipe, electrical wiring, and duct for this unit should be installed
by a qualified VAC professional only.
6
4
CAUTION
5
* Not all components included
with equipment purchase.

STANDARD PARTS
Indoor Unit Accessories*
Outdoor Unit Accessories*
No. Name Appearance Qty Usage
1 Wired Controller 1 Controls the indoor unit
2 anger or 4 Supports the indoor unit
3 Nut with Washer 8 Fastens the hanger brackets
to the cabinet of the unit
4 Nut with Washer 4 Fastens the hanger brackets
to the cabinet of the unit
5 Nut 4 Used with the suspension
bolt for installing the unit
6 Washer 4 Used with the suspension
bolt for installing the unit
7 Pipe Insulation 1 Insulates the gas pipe
8 Pipe Insulation 1 Insulates the liquid pipe
9 Fastener 4
Fastens the insulation blanket
10 Flare Nut 1 Connects the liquid pipe
11 Flare Nut 1 Connects the gas pipe
7
No. Name Appearance Qty Usage
1 Drain Plug 2 or 3 Plugs the unused drain hole
2 Drainage Connecter
or 1Connects with the hard
PVC drain pipe
* Not included with equipment purchase.
* Not included with equipment purchase.

INSTA ATION SITE INSTRUCTIONS
Indoor Unit
The unit must be installed in a location which can withstand twice the weight of the unit.
Inadequate building support at the installation location may result in serious property
damage and injuries.
Review the installation location with the customer as follows:
1. Ceiling is strong enough to support twice the weight of the unit.
2. Ductwork can easily be installed using the shortest amount of duct.
3. Location allows easy installation of drain pipe.
4. Electrical power can easily be run as a dedicated circuit.
5. Space is left around the unit as required in Fig. 1.1 for future service and maintenance.
6. Air inlet and outlet of the unit should never be blocked, so airflow can reach every
corner of the room.
8
WARNING
Fig. 1.1
>12 in.
>72 in.
>12 in.

INSTA ATION SITE INSTRUCTIONS
Outdoor Unit
9
Do not install the unit at a location where the distance exceeds the maximum length indicated in
the table. The maximum length of the connection pipe is listed in the System Requirements section.
CAUTION
WARNING
Outdoor Unit Minimum Distances
in (mm)
A 20 (500)
B 20 (500)
C 24 (610)
D
78 (1980)
E 12 (305)
Air inlet
Air outlet
A
BC D
E
Fig. 1.2
The unit should be installed level on a pad that can support twice the weight of the unit.
If the outdoor unit will be exposed to strong winds, it must be adequately secured.
1. Install the outdoor unit at a location that is capable of withstanding twice the weight of the unit.
2. Install the outdoor unit where it is convenient to connect refrigerant lines to the indoor unit.
3. I nstall the outdoor unit where the condensate water can be drained unobstructed during the
heating mode to a safe location.
4. Do not locate the unit where the noise may be objectionable to neighbors.
5. Provide the space shown in Fig. 1.2, so that the air flow is not blocked and future service and
maintenance can be performed.

For the units: 18K
For the units: 24-42K
INDOOR UNIT INSTA ATION
10
Model ABCD EFGH I J
UMAT24 P230V1AD 43-3/8 20-3/8 32-1/4 45-5/8 50-3/8 22 39-1/2 6-1/4 9-1/4 10-1/2
UMAT30 P230V1AD (1101) (517) (820) (1159) (1279) (558) (1002) (160) (235) (268)
UMAT36 P230V1AD 39-3/4 29-1/2 32-1/4 43-7/8 48-1/4 30-1/2 38-1/2 6-1/4 9-1/8 11-3/8
UMAT42 P230V1AD (1010) (748) (820) (1115) (1226) (775) (979) (160) (231) (290)
INDOOR UNIT DIMENSIONS in (mm)
Model ABCD EFGH I J
UMAT18 P230V1AD 37-1/4 24-3/8 29 35-1/8 40-7/8 28-3/8 29 4-7/8 8 10-1/2
(945) (618) (738) (892) (1037) (721) (738) (125) (203) (266)
INDOOR UNIT DIMENSIONS in (mm)
(Approx)

For the units: 48K
INDOOR UNIT INSTA ATION
11
Model ABCD EFGH I J
UMAT48 P230V1AD 43-3/8 25-3/8 33-1/2 45-1/4 52-3/4 29-1/2 37-1/2 7-1/2 12-1/2 13-3/4
(1101) (646) (852) (1150) (1340) (750) (953) (190) (316) (350)
INDOOR UNIT DIMENSIONS in (mm)

INDOOR UNIT INSTA ATION
Mounting Indoor Unit
It is critical to properly secure the indoor unit to a stable and rigid structure that can support twice
its weight for safety and product reliability.
Select the proper size suspension bolts or anchoring devices (field supplied) to support twice the
weight of the unit.
1. Locate a structure strong enough to support twice the weight of the unit.
2. Using the installation template supplied with the unit, mark the hole locations as shown in fig 2.1.
3. Drill 4 mounting holes for suspension bolts per the manufacturer's instructions.
4. Install 4 suspension bolts into pre-drilled holes.
5. Install the 4 hanger brackets to unit as shown in fig 2.2.
6 Add an upper nut to each suspension bolt.
7. Carefully lift unit and position the 4 hanger brackets on the suspension bolts.
8. Install a lower washer and nut to each suspension bolt to secure unit as shown in fig 2.3.
9. Adjust the unit height to desired position.
eveling
After the indoor unit is installed and adjusted to proper height, check the unit position to ensure that the
unit is level as shown below.
12
Fig. 2.1 Fig. 2.2
Fig. 2.4
Fig. 2.3
Level Bar

13
OUTDOOR UNIT INSTA ATION
The unit should be located with the unit support feet firmly on the equipment pad.
If the outdoor unit is exposed to wind, it must be properly secured.
WARNING
Model ABCDE
UMAT18 P230V1AO 37-5/8 15-5/8 27-1/2 22 14-1/8
(955) (396) (700) (560) (360)
UMAT24 P230V1AO 38-5/8 16-3/4 31-1/8 24 15-1/2
UMAT30 P230V1AO (980) (427) (790) (610) (395)
UMAT36 P230V1AO 43-5/8 17-3/8 43-1/4 24-7/8 15-3/4
UMAT42 P230V1AO (1107) (440) (1100) (631) (400)
UMAT48 P230V1AO 37-3/4 16-1/4 53-1/8 22-1/2 14-3/4
(958) (412) (1349) (572) (376)
OUTDOOR UNIT DIMENSIONS in (mm)
18K-36K
42K-48K

OUTDOOR UNIT INSTA ATION
Drain Joint
Chassis
Bottom
Drain pipe mounting hole
Condensate Drainage of the Outdoor Unit
The outdoor unit should be installed with a drain pipe to drain condensate water during the
heating mode.
1. Insert the drain joint (included) into the selected hole located on the bottom of the
base pan and then connect the drain hose (field supplied) to the drain joint.
2. All other holes must be sealed with plugs (included) to avoid water leaks, except for
the drain pipe mounting hole.
3. Route drain hose to safe location for disposing of condensate water.
14

Piping Preparation
1. Do not open service valves or remove protective caps on pipes until instructed by this manual.
2. Keep tubing free of dirt, sand, moisture and contaminants.
3. Insulate each refrigerant pipe and condensate hose with minimum 3/8” (10 mm) wall
thermal pipe insulation.
4. Bind refrigerant pipes and interconnecting cable together with cable ties at 12-inch intervals.
5. Include the condensate hose in bundle for exterior portion only.
15
PIPING INSTA ATION
Refrigerant Piping
Drill Hole in Wall
1. Locate and mark proper location for the wall hole.
2. Cut the 2 3/4” wall hole with a 5° to 10°
downward slant to the outdoors.
3. Insert a wall sleeve (field supplied) into hole to
to prevent damage to refrigerant pipes, insulation,
condensate drain hose and wiring.
4. Proper weather proofing of the wall surface and
wall sleeve is essential to assure a trouble-free
installation. Apply sealant, caulking or equivalent weather proofing material around
the perimeter of the wall sleeve (interior & exterior) to eliminate outdoor air and water
leaks into the living space.
NOTE: Expandable foam insulation may be added to fill large wall gaps. Apply per
manufacturer's instructions.
Seal ole
ole Size
Indoor Outdoor
Wall ole Diagram
Oil return bend
Indoor
Outdoor
20 ft. 30 ft.
Oil return bend
Indoor Unit below Outdoor Unit Application
When height difference between indoor unit and outdoor
unit is more than 30 feet, an oil return bend should be added
for every 20 feet of connection pipe as shown.
Wall
ole Sleeve
Insulate entire interior section of condensate hose to prevent sweating which may cause water
stains or wall damage.
CAUTION

16
PIPING INSTA ATION
Indoor Unit Pipe Connections
1. Feed refrigerant pipes, drain hose and interconnecting wires assembly through wall hole
from outdoor to the indoor unit.
2. Pull the piping assembly to the unit. Carefully bend refrigerant pipes to meet indoor unit
connection ports. Use proper tools to avoid kinks.
3. Add a small amount of refrigerant oil to
both ends of the flare fittings.
4. Starting with either refrigerant pipe, carefully
center the pipe to the indoor unit connection
port then hand tighten the flare nut.
5. Repeat procedure with remaining pipe.
6. Tighten both flare nuts using a standard wrench and a torque wrench as shown below.
7. Carefully tighten flare nuts to correct torque level referring to the Torque Table below.
8. Individually insulate each bare refrigerant pipe and joint as shown below to prevent sweating.
Pipe Diameter Nut Size Tightening Torque
inch (mm) inch (mm) ft-lbs N-m
1/4 (6.35) 1/4 (17) 10 to 13 14 to 18
3/8 (9.5) 3/8 (22) 25 to 30 34 to 42
1/2 (12.7) 1/2 (25) 36 to 45 49 to 61
5/8 (15.9) 5/8 (29) 50 to 60 68 to 82
Liquid pipe
Gas pipe
Front outlet
Insulate pipe connection
Insulate pipe
Reference A:
Cover this portion with insulation
Pipe insulation
Over tightening may damage flare connections and cause leaks.
CAUTION
Copper
piping
Oil applied
(to reduce friction
with the flare nut)
Flare nut Oil applied
(i proves seal
air-tightness)
90
90
Holding spanner
Torque wrench

PIPING INSTA ATION
Outdoor Unit Pipe Connections
17
1. Remove service valve cover (if provided) to access
the service valves and refrigerant ports.
2. Carefully bend and adjust length of refrigerant pipes
to meet outdoor unit service valve connections
with proper tools to avoid kinks.
3. Add a small amount of refrigerant oil to both ends
of the flare fittings.
4. Starting with either refrigerant pipe, carefully
center the pipe to the indoor unit connection
port then hand tighten the flare nut.
5. Repeat procedure with remaining pipe.
6.
Tighten both flare nuts using a standard wrench
and a torque wrench as shown.
7. Carefully tighten flare nuts to correct torque level referring to the Torque Table below.
Pipe Diameter Nut Size Tightening Torque
inch (mm) inch (mm) ft-lbs N-m
1/4 (6.35) 1/4 (17) 10 to 13 14 to 18
3/8 (9.5) 3/8 (22) 25 to 30 34 to 42
1/2 (12.7) 1/2 (25) 36 to 45 49 to 61
5/8 (15.9) 5/8 (29) 50 to 60 68 to 82
Copper
piping
Oil applied
(to reduce friction
with the flare nut)
Flare nut Oil applied
(i proves seal
air-tightness)
Over tightening may damage flare connections and cause leaks.
CAUTION
Gas pipe
3-way valve
R
2-way valve
Liquid pipe
or
Pipe
coupling
Service
Valve Cover
Service
Valve Cover
90

18
PIPING INSTA ATION
Indoor Condensate Drain Piping
Observe all local sanitary codes when installing condensate drains.
WARNING
See Table below for Condensate Drainage port size.
Pitch the condensate drain pipe at a gradual 2.5% pitch (Example: ¼-in drop over a 10-in length)
without obstructions. Use pipe hanger/brackets to support the condensate drain pipe from dropping.
NOTE: Insulate entire interior section of condensate hose and/or pipes to prevent sweating
which may cause water stains or wall damage.
Gravity Drainage System with P-Trap and Vent
Typical Gravity Drainage System
Capacity Size (BtuH) Drain Connection Size (OD)
18,000 1-1/8 (30)
24,000-48,000 3/4 (20)
Ceiling Hangers
Wall
Ceiling Hangers
Trap
Vent
Wall
CAUTION When utilyzing gravity condensate drainage, the internal lift condensate
pump must be disconnected and its wiring insulated to prevent shorting. All unused
condensate drain ports must be plugged to prevent leakage.

19
PIPING INSTA ATION
Vertical Lift Drainage System (Internal Condensate Pump)
If a gradual pitch from the drainage port is not obtainable, the indoor unit has a lift condensate
drain pump * with limited head or lift. The condensate drain pipe may have a vertical height of
33 in. maximum above the unit drainage port within the first 12-in as long as the remaining
condensate drain pipe gradually descends from that point and is aligned with drainage port.
Use an auxiliary condensate pump with float valve for vertical height greater than 33 in. above the
unit drainage port. A float valve is recommended to shut off the system if the auxiliary pump fails.
The unit has two gravity drain ports and a factory installed condensate pump with an outlet port.
The condensate pump port must be utilized for condensate removal or the pump may be
disconnected from the control board if a gravity drain port is desired. If disconnected the
condensate pump plug must be electrically insulated to prevent an accidental short circuit. Use
piping of the same diameter or larger as the unit connection. Local code should be referenced for
approved condensate piping for your area.
•Include the condensate hose in the pipe/
wire bundle for the exterior/outdoor
section.
•Fasten the refrigerant and condensate pipe
assembly to the exterior wall for support.
•The drain pipe should terminate 6 inches
above grade.