•
• •
• Be sure to set DIP switch 1-8 to ON when setting twin/triple addresses. If DIP switch 1-1 is set to ON without setting 1-
8 to ON also, group addresses will be set instead, and the remote control open circuit error code (F26) will be displayed.
Automatic address resetting for twin systems
Function
•
• •
• This clears the current twin addresses which have been set automatically, and causes automatic twin address setting to
be carried out once more.
Procedure: Press the ADDRESS RESET switch SW3 (push button switch) on the outdoor unit circuit board continuously
until LEDs 2 to 8 on the outdoor unit circuit board are all illuminated (takes approx. 3.5 seconds).
Operation: The outdoor unit will reset the addresses for the indoor units which it is connected to, and will send an instruction
to carry out automatic address setting again. If the indoor unit DIP switches have not been manually set for
twin address setting, the indoor units receive this command and they then clear their existing settings and carry
out automatic address setting.
If an indoor unit has had its address set by the DIP switch (DIP switch 1-8 is ON), or if the remote control unit is connected to one
of the indoor units, then the addresses for those indoor units cannot be reset.
•
• •
• The indoor units will not run for approximately 1 minute while automatic twin address resetting is being carried out.
•
• •
• Do not turn off the power supply for at least 1 minute after automatic twin address resetting has been carried out.
19.2. Piping connections
•
• •
• The following table shows the pipe diameters for a twin-type system.
•
• •
• The following table shows the equivalent pipe lengths and height differences for twin-and triple-type systems
NOTE :
1. Use the main pipe to gain any rise or fall
required for the pipes.
2. The number of bends should be 8 or less in a single system (L + la, L + Ib, L + Ic), and 15 or less overall.
3. Branch pipes should be positioned horizontally.
•
• •
• The branch pipe should be horizontal to or perpendicular to the
indoor unit.
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