Specification Sheet

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YMGI
Your Modern Green Idea
Submittal Data Sheet: WMMS-18KC-U2B(58)4
OUTDOOR UNIT
WMMS-18C-U2B(58)4
INDOOR UNIT
ACCESSORIES
THERMOSTAT
MOUNTING BRACKETS
FOOT RISERS
COPPER/WIRE/ACC.SET
LINESET COVERS
WINTER WIND BAFFLE
BRIDGE CONTROLLER
Engineering Submittal Data Sheet:
09.13.2018
Document No. ES2018.58.4.A.18K.001.A
YMGI’s ductless Ceiling Cassette Mini Split (WMMS) is designed for high
performance, easy installation and servicing. The single-zone WMMS system
consists of 1 ceiling cassette indoor unit and 1 outdoor unit. The outdoor unit
is designed for horizontal venting, making condenser installation in tight areas
simple. Ideal for multi-family and high-rise buildings in residential, commercial,
institutional, and industrial applications. Includes U-Touch remote control.
YMGI Group • 601 Arrow Ln. O’Fallon, MO 63366 • [e-mail] • ymgigroup.com • 866-833-3138
Product specifications and appearance are subject to change without notice. Copyright © 2018 YMGI Group
Job Name: Tag #:
Location Date:
General Contractor: Mechanical Contractor:
Sales Representative: Sales Engineer:
Submitted by: Drawing #:
Reference PO #:
System WMMS-18KC-U2B(58)4
Dimensions & Weight Indoor Unit
Indoor Unit Model WMMS-18EC-U2B(58)4
Dimension
(W×H×D)
inch 26.125 x 22.625 x 9.5
Net/Gross Weight lbs 44.0 / 52.8
Dimensions & Weight Outdoor Unit
Outdoor Unit Model WMMS-18C-U2B(58)4
Dimension of Unit
(W×H×D)
Inch 37.6 x 27.5 x 14.1
Net / Gross Weight lbs 105.6 / 114.4
Connection Pipes
Outer Diameter of
Liquid Valve
inch 1/4”
Outer Diameter of
Gas Valve
inch 1/2”
Max Elevation Difference
IDU-ODU
ft. 49
Max Copper Line Length ft. 164
System WMMS-18KC-U2B(58)4
Power Supply V/Ph/Hz 208-230 / 1 / 60
Power Voltage Allowed Min./Max. V 187 / 253
Surge Protector In Incoming Power Supply
Field-
Install
Recommended
Cooling Capacity Btu/h 17100
Capacity Range Btu/h 5400-18700
Cooling Power Input Max. W 1750
Heating Capacity @ 47 °F Btu/h 18800
Heating Power Input Min./Stand./Max. Btu/h 4700-22200
Heating Power Input Max. W 1900
Heating Capacity @ 17 °F Btu/h 9900
SEER 18
EER 10.1
COP W/W 2.7
HSPF 9.00
Indoor Unit Model WMMS-18EC-U2B(58)4
Air Flow Volume CFM 353/445
Dehumidifying Volume pt/hr .85
Fan Motor Power Output HP 1/5
Fan Motor FLA A 0.5
Max. Over Current Protection A 15
Min. Current (MCA) A 1.0
Evaporator Form Aluminum Fin-Copper Tube
Set Temperature Range °F 61-86
Sound Pressure Level dB (A) 37/46
Sound Power Level dB (A) 37/46
Outdoor Unit Model WMMS-18C-U2B(58)4
Compressor Type DC Inverter Driven Rotary
Compressor RLA A 12.0
Fan Motor Power Output HP 1/6
Fan Motor FLA A 1.5
Max. Over Current Protection A 25
Min. Current (MCA) A 17.0
Outdoor Unit Air Flow Volume CFM 2590
Condenser Fin / Tube Structure Aluminum Fin-copper Tube
Maximum Allowable Pressure PSIG 624
Throttling Method Electron expansion valve
Defrosting Method Automatic Defrosting
Sound Pressure / Power Level dB (A) 56/56
Cooling Operation Ambient Temp. Range °F 0 ~ 118
Heating Operation Ambient Temp. Range °F 0 ~ 75
R410A Refrigerant Factory Charge ozs 49.6
Factory Charge for Pipe Length ft. 25
Gas Additional Charge oz/ft. 0.3
WMMS-18EC-U2B(58)4