Hitachi RCIM-1.5FSN4 Service Manual

6 Optional functions
Indoor units input and output signals
SMGB0099 rev.0 - 12/2016
202
Indoor unit inputs/outputs factory settings
Connectors CN3, CN7 and CN8 are factory-set with the following optional functions.
Connector
number
Connector
terminal
Function Factory settings
Input CN3
1–2 03 Function 1. Remote unit On/Off
2–3 06
Cancellation of commands from the remote control after a forced
stoppage
Output
CN7
1–2 01 Operation signal
1–3 02 Alarm signal
CN8
(Not for RPK)
1–2 06 Thermostat enabled signal during heating
(*) If the Econofresh kit is connected, CN3 terminals 1 and 2 are locked for the enthalpy sensor or the CO2 sensor.
6.1.2 Optional signal conguration
The following tables describe the optional signals available on indoor units.
Optional input signals
? NOTE
If an input signal is set, the on-screen display on the remote control automatically changes to the following.
Indication Input signal Application Port
00
Not set Not set CN3
01
Control by eld-
supplied room
thermostat (cooling)
This signal controls the unit through an external thermostat.
? NOTE
It can reduce summer cooling problems in certain applications
CN3
02
Control by eld-
supplied room
thermostat (heating)
This signal controls the unit through an external thermostat.
? NOTE
It can reduce problems caused by indoor air stratication.
CN3
03
Function 1: remote
on/off of the unit (by
contact)
This signal controls the starting and stopping of the system from
a remote location.
? NOTE
It is extremely practical in hotels and ofces to control the indoor
units from the building management system.
CN3
04
Function 2: unit on
(by pulse)
This signal controls the starting of the system from a remote
location.
? NOTE
It is extremely practical in hotels and ofces to control the indoor
units from the building management system.
CN3
05
Function 2: unit
stoppage (by pulse)
This signal controls the stoppage of the system from a remote
location.
? NOTE
It is extremely practical in hotels and ofces to control the indoor
units from the building management system.
CN3

Hitachi RCIM-1.5FSN4 Specifications

General

Brand	Hitachi
Model	RCIM-1.5FSN4
Category	Air Conditioner
Language	English