Friedrich FSHW091 Service And Parts Manual page 94

Installation Instructions
4.2 Installation Requirements
(1) Prohibit installing the wired controller at wet places.
(2) Prohibit installing the wired controller at the places with direct sunshine.
(3) Prohibit installing the wired controller at the place near high temperature
objects or water-splashing places.
4.3 Installation Methods
Fig. 23 is the simple installation process of wired controller; please pay attention to
the following items:
(1) Before installation, please cut off the power for indoor unit; NOTE:
CN2 terminal is used for connecting indoor unit and it must be connected.
(2) Pull out the four-core twisted pair line from the installation holes and then let it go
CN3 terminal and CN4 terminal are used for connecting the centralized
through the rectangular hole behind the soleplate of the wired controller.
controller, and these two terminals have the same function. Customers can
select one or two terminals for connection according to their requirements.
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WIRED CONTROLLER
CN4 CN3 CN2
CN4 CN3 CN2
CN4 CN3CN2
Fig. 23 Installation diagram for wired controller
Wired Controller FSWC1 Owner's Manual
CN2 terminal is used for connecting
indoor unit and it must be connected.
CN3 terminal and CN4 terminal are
used for connecting the centralized
CN4 CN3 CN2 controller, and these two terminals
have the same function. Customers
See NOTE Below
can select one or two terminal(s) for
connection according to the needs.
23
.