Hitachi RCIM-0.8FSRE - Optional Signal Configuration

5 Optional functions
Indoor units input and output signals
SMGB0137 rev.0 - 05/2021
96
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/O󰀨
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 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 CO
2
sensor.
5.1.2 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 (for 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 (for
heating)
This signal controls the unit through an external thermostat.
? NOTE
It can reduce problems caused by indoor air stratication.
CN3
03
Remote ON/OFF 1 (Level)
Function 1: remote on/o󰀨 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 oces to control the indoor units
from the building management system.
CN3
04
Remote ON/OFF 2
(Operation)
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 oces to control the indoor units
from the building management system.
CN3
05
Remote ON/OFF 2
(Stoppage)
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 oces to control the indoor units
from the building management system.
CN3
06
Forbidding remote control
after manual stoppage
This signal stops the indoor unit and cancels the commands from the
remote control while it is enabled.
CN3
07
Remote Cooling / Heating
Change
This function controls operating mode changes from a remote
location.
CN3
08
Up/down input signal for
grille (not available)
Not available CN3
09 Setback operation
Setback Temperature Control becomes activated when the card key
is taken out from the card holder
CN3