Mitsubishi Electric SEZ-KD18NA User Manual

Job Name: Location: Date:
Purchaser: Engineer:
Submitted to: For Reference Approval Construction
System Designation: Schedule No.:
Cooling*
Rated Capacity...............................17,200 Btu/h
Total Input.........................................90 W
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.74 A
Heating*
Rated Capacity...............................20,100 Btu/h
Total Input.........................................70 W
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.63 A
* Rating Conditions (Cooling) - Indoor: 80ºF (27ºC) DB / 67ºF (19ºC) WB.
Outdoor: 95ºF (35ºC) DB / 75ºF (24ºC) WB.
(Heating) - Indoor: 70ºF (21ºC) DB / 60ºF (16ºC) WB. Outdoor: 47ºF (8ºC) DB /
43ºF (6ºC) WB.
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Power Supply ....................208 / 230V, 1-Phase, 60 Hz
MCA .............................................. 1 A
Voltage
Indoor - Outdoor S1-S2 ......................AC 208 / 230V
Indoor - Outdoor S2-S3 ............................DC 24V
Indoor Unit: SEZ-KD18NA
Fan
Type x Quantity............................ Sirocco Fan x 4
Motor .....................Direct-driven DC Brushless Motor
Motor Output.......................................96 W
Airow (Lo - Med - Hi)...................423 - 529 - 635 CFM
Air Filter ........................ Polypropylene Honeycomb
External Static Pressure...........0.02 - 0.06 - 0.14 - 0.20"WG
Sound Pressure Level (Lo - Med - Hi) .........30 - 34 - 38 dB(A)
 
W 46-7/8 / 1,190
D 27-9/16 / 700
H 7-7/8 / 200
Weight. ................................... 60 lbs. / 27 kg
Field Drainpipe Size O.D......................1-1/4" / 32 mm
Wall-mounted Remote Controller
................. PAR-21MAA
(See Data Submittal Sheet)
Refrigerant Type
.................................. R410A
Refrigerant Pipe Size O.D.
Gas Side
.................................1/2" / 12.7 mm
Liquid Side
................................1/4" / 6.35 mm
Connection Method
................................Flared
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Remote Controller: PAR-21MAA
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• M-NET Control Adapter (MAC-399IF)
• External Heat Adapter (PAC-YU25HT)
• CN24 Relay Kit (CN24RELAY-KIT-CM)
• Three-pole Disconnect Switch (TAZ-MS303)

• Ceiling-concealed ducted indoor unit for residential applications
• Ultra thin body: 7-7/8" high
• Built-in drain mechanism for condensate removal; lifts to 21-11/16"
• Air lter is included with indoor unit
• Quiet operation ― as low as 23 dBA
• PAR-21MAA wired remote controller is included
• Indoor unit powered from outdoor unit using A-Control
• Automatic fan speed control
• Auto restart following a power outage
• Limited warranty: one year on parts and defects
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• All Horizontal-ducted Indoor Units:
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• Select Wall-mounted Indoor Units:
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and

• A combination of both Horizontal-ducted
and Wall-mounted Indoor Units
Refer to the separate submittal forms for the
MSZ-A and MSZ-FD Indoor Units and MXZ
Outdoor Units.
Horizontal-ducted Indoor Unit: SEZ-KD-NA
Remote Controller
PAR-21MAA -
Packaged with SEZ
Wall-mounted Indoor Unit: MSZ-A09, 12, 15, 17, 24NA
Wireless Remote Controller -
Packaged with MSZ-A and MSZ-FD
(Optional Wired Remote Controller
PAR-21MAA)
Outdoor Unit: MXZ-3A30NA
Wall-mounted Indoor Unit: MSZ-FD-NA
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Mitsubishi Electric SEZ-KD18NA Specifications

General

Brand	Mitsubishi Electric
Model	SEZ-KD18NA
Category	Heat Pump
Language	English

Summary

General Features and Specifications

General Features

Describes key characteristics of the ceiling-concealed ducted indoor unit, including its thin body, drain mechanism, and quiet operation.

Optional Accessories

Lists optional accessories available for the indoor unit, such as control adapters and disconnect switches.

Cooling and Heating Specifications

Details the rated capacity, total input, and current for both cooling and heating modes under specified conditions.

Electrical Requirements

Specifies the power supply, MCA, and voltage requirements for the indoor unit's operation.

Indoor Fan Performance and Air Flow Charts

Fan Performance Curves

Presents corrected air flow charts showing external static pressure versus airflow rate for different fan speed settings (Low, Middle, High).

Unit Dimensions and Service Space

SEZ-KD18NA Dimensions

Provides detailed dimensional drawings and measurements in millimeters and inches for the SEZ-KD18NA indoor unit.

Required Service Space

Illustrates the necessary clearance and access space around the unit for maintenance and service operations.

Model Dimension Table

A comparative table listing dimensions (A through N) for different SEZ-KD models (09NA, 12NA, 15NA, 18NA).