Description Of Optional Input Signals - Hitachi RCI Service Manual

6 Optional functions
Changing the optional signals and setting conditions
In optional setting mode, the remote control indication changes as shown
below:
1 The assigned port for the input signal and the output signal are displayed
in the time indication segments for the timer setting. See the following table
a.
for the indicated port and the PCB connector of the indoor unit.
2 The input and output signal codes are indicated in the temperature setting
segments.
Press the TIME▲ or TIME▼ button on the remote control to select the port to
b.
which the input and output signals are to be assigned.
Press the OK button. The port indication in the timer setting time indication
c.
segments changes as shown in the figure below.
Returning from optional function setting mode
Press RESET to store the optional function settings and return to normal mode.
Indoor unit selection
In optional function setting mode, press TEMP ▲ or TEMP ▼ to select the indoor unit on which the optional function is to
be set.
Connectors CN3, CN7 and CN8 are factory-set with the following optional functions.
Connector
no.
Inlet CN3
CN7
Outlet
CN8 (Not
for RPK)
(*)
If the Econofresh kit is connected, CN3 terminals 1 and 2 are locked for the enthalpy sensor or the CO

6.1.4 Description of optional input signals

Control by field-supplied room thermostat
On-screen display: 01 or 02.
When a field-supplied room thermostat is used instead of the inlet thermistor on the indoor unit, connect the wiring and use
the materials as indicated in
Specifications for field-supplied room thermostat:
• Manufacturer or type: equivalent to YAMAKATE R7031P005, R7031Q005.
• Contactor charge: 12 Vdc
189
SMGB0063 rev. 1 - 10/2010
Connector
Function
terminal
1–2
03
2–3
06
1–2
01
1–3
02
1–2 06
Available ports, see on page 194.
Factory settings
Function 1. Remote unit On/Off
Cancellation of commands from the remote control after
a forced stoppage
Operation signal
Alarm signal
Thermostat enabled signal during heating
6
sensor.
2