Table of Contents
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A. Technical Data ...................................................................................................................................................................... 5
General Description ........................................................................................................................................................ 5
General Specification ..................................................................................................................................................... 6
2-Pipe Systems ........................................................................................................................................................ 6
4-Pipe Systems ........................................................................................................................................................ 7
Coil Data ........................................................................................................................................................................ 8
2-Pipe Systems ........................................................................................................................................................ 8
4-Pipe Systems ........................................................................................................................................................ 8
Sound Power Data .......................................................................................................................................................... 9
Dimensions .................................................................................................................................................................. 14
Valve Information (Optional) ........................................................................................................................................ 15
B. Installation ......................................................................................................................................................................... 18
Safety Precautions ........................................................................................................................................................ 18
Installation and Location .............................................................................................................................................. 19
Front Panel Removal .................................................................................................................................................... 20
Electrical Connection .................................................................................................................................................... 20
Piping Connections ....................................................................................................................................................... 22
Valve and External Drain Pan Installation ..................................................................................................................... 23
C. Maintenance ...................................................................................................................................................................... 25
General Maintenance ................................................................................................................................................... 25
Regular Maintenance ................................................................................................................................................... 25
Filter Installation & Cleaning ........................................................................................................................................ 25
Fan Motor Assembly Maintenance ............................................................................................................................... 26
Water Fittings Interchange ........................................................................................................................................... 26
D. Control Specifications: Complete Function PCB - TOTAL Type Control .............................................................................. 27
I/O Port Definitions ...................................................................................................................................................... 27
Wiring Diagrams .......................................................................................................................................................... 28
Standard EC-TOTAL Type Control PCB .................................................................................................................... 28
Master-Slave Networking Wiring Diagram ............................................................................................................. 29
Configuration Settings .................................................................................................................................................. 30
Control Logics for 2-Pipe System ................................................................................................................................... 32
With Valve Configuration ....................................................................................................................................... 32
Without Valve Configuration ................................................................................................................................. 35
Control Logics For 4-Pipe System .................................................................................................................................. 37
Sleep Mode .................................................................................................................................................................. 39
Auto Fan Speed ............................................................................................................................................................ 39
Modulating Valve Control Under Energy Saving Mode ................................................................................................. 39
Buzzer .......................................................................................................................................................................... 39
Auto Restart ............................................................................................................................................................... 39
On/Off Switch On The Front Panel .............................................................................................................................. 40
Electric Heater Safety Switch ...................................................................................................................................... 40
Table of Contents
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SK2019 FSTD-SLIM-EC-FLEX-001_01
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