External Input; Test Run; Test Run Using Outdoor Unit (Pc Board); Test Run Using Remote Controller - Fujitsu Airstage UTP-RU01AH Installation Manual

9. EXTERNAL INPUT

• RB unit can be switched cooling priority and heating priority by using RB unit
PC board CNA01 or CNA02.
• The "external input priority mode" must be set by changing DIP switch SET2-
1,2 on PC board of RB unit.
• A twisted pair cable (22AWG) should be used. Maximum length of cable is
492 ft (150 m).
• Use an external input cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
 INPUT SELECT

Use either one of these types of terminal according to the application. (Both types of
terminals cannot be used simultaneously.
 Dry contact terminal ([CNA01])

When a power supply is unnecessary at the input device you want to connect, use
the Dry contact terminal ([CNA01]).
PC Board
*a
GND
connected unit
When connected to Dry contact terminals of multiple RB units with a connected unit,
insulate each RB unit with relay, etc. as shown on below example.
Input device
NOTE :
When connected to multiple RB units directly, it will cause breakdown.
 Apply voltage terminal ([CNA02])

When a power supply must be provided at the input device you want to connect, use
the Apply voltage terminal ([CNA02])
Load
resistance
*c
connected unit
*1: Make the power supply DC12 to 24V. Select a power supply capacity with an
ample surplus for the connected load.
Do not impress a voltage exceeding 24V across pins 1-3.
*c: The allowable current is DC 5mA to 10 mA. (Recommended: DC 5mA)
Provide a load resistance such that the current becomes DC 10mA or less.
Select very low current use contacts (usable at DC 12V, DC 1mA or less).
*d: The polarity is [+] for pin 1 and [-] for pin 3. Connect correctly.
When connected to Apply voltage terminals of multiple RB units with a connected
unit, be sure to make a branch outside the RB unit using a pull box, etc. as shown on
below example.
En-11
*a: Select very low current use
contacts (usable at DC12V,
CNA01
DC1mA or less).
1
*b: The wiring is different from
Apply voltage terminals. Be suf-
2
fi ciently careful when wiring.
*b
PC board
CNA 01
K1
PC board
CNA 01
K2
K1-K2 : Relay
(Device for DC current)
DC power sup-
*1
ply 12 - 24V
+
-
+
-
Load
resistance
 COOLING/HEATING PRIORITY FUNCTION

 "Edge" input only

Connector
CNA01 or CNA02
CNA01 or CNA02
Priority mode

10. TEST RUN

10.1. Test run using Outdoor unit (PC board)

• Refer to the Installation Manual for the outdoor unit to perform the test run using the
outdoor unit.

10.2. Test run using Remote Controller

• Refer to the Installation Manual for the remote controller to perform the test run
using the remote controller.

11. CHECK LIST

Pay special attention to the check items below when installing the RB unit (s). After
installation is complete, be sure to check the following check items again.
CHECK ITEMS
Has the RB unit been installed
correctly?
Has there been a check for gas
leaks (refrigerant pipes)?
Has heat insulation work been
completed?
PC board
Is the voltage of the power source
1
the same as that indicated on the
label on the RB unit?
2
CNA02
Is the address setting correctly
3
configured?
*d
Are the wires and pipes all
connected completely?
Is the RB unit earthed (grounded)?
Is the connection cable the specified
thickness?
DC power
supply 12 - 24V
connected unit
Input signal
OFF → ON Heating priority
ON → OFF Cooling priority
On
Off
Heating
Cooling
If not performed correctly
Vibration, noise, RB unit may
drop
No cooling, No heating
Water leakage
No operation, heat or burn
damage
No operation
No operation, heat or burn
damage
Short circuit
No operation, heat or burn
damage
PC board
CNA
02
PC board
CNA
02
Command
CHECK
BOX