- 63 -
• External analog input
Use the supplied connector.
If no temperature settings are made via the MA remote controller,
the temperature changes with the current of generator.
External output terminal
External output terminal (refer to Fig. V. 1.(7).2) is ineffective when the circuit is open.
Refer to Table V. 1.(7).1 for information about each contact.
The current in the circuit to be connected to the external output terminal must be 0.6A or less.
Table V. 1.(7).1
External input terminal
The piping length must be within 100 m.
External input terminal (refer to Fig. V. 1.(7).2 is ineffective when the circuit is open.
Refer to Table V. 1.(7).2 through Table V. 1.(7).4 for information about each contact.
Only the “pump interlock” function is ineffective when the circuit is short-circuited.
Connect a relay circuit to the external output terminal as shown in Fig. IV. 3.(8).1.
The specifi cations of the relay circuit to be connected must meet the following conditions.
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
[Table V. 1.(7).2] TB142A [Table V. 1.(7).4] TB142C
[Table V. 1.(7).3] TB142B
*1
PWFY-P100VM-E-BU
Hot Water
PWFY-P100, 200VM-E-AU Heating
*2
Effective when SW 4-3 is set to ON.
*3
Effective when SW 4-4 is set to ON.
*4
PWFY-P100, 200VM-E-AU only
*5
When Heating ECO mode is effective, the outlet water temp. will be changed
based on ambient temp. automatically. (Except for PQHY/PQRY-series)
*6
When Anti-freeze mode is effective, the unit will set the heating temperature range
between 10ºC~45ºC enabling the unit to maintain low water temperature to prevent
water pipes from freezing.
*7
PWFY-P100VM-E-BU only
Note: When setting Heating ECO or Anti-freeze mode, reset all power supply of all units (outdoor/indoor units).
Note: Dip S/W 1-1 OFF: Water Inlet Temp.
Dip S/W 1-1 ON : Water Outlet Temp.
The factory setting for Dip SW 1-1 is OFF.
Signal priority = External input > centralized controller > remote controller
(7) External input/output function
Preset temperature input (external analog input: 4mA-20mA)
• External input
Input through CN421, CN422 on the circuit board. (Fig. V. 1.(7).1)
OUT1
OUT2
OUT3
*7
OUT4
Operation ON/OFF
Defrost
Compressor
Error signal
IN1
Pump interlock
IN3
IN4
Connection demand
Operation ON/OFF
COM+
IN5
*1
IN6
*2
IN7
*3
IN8
*4
Common
Hot Water/Heating
Heating ECO
*5
Anti-freeze
*6
Cooling operation
[Fig. V. 1.(7).1]
[Fig. V. 1.(7).3]
[Fig. V. 1.(7).2]
OUT4
OUT3
OUT2
TB141A
OUT1
IN1
IN2
IN3
IN4
IN5IN6 IN7 IN8
TB142C
TB142B
TB142A
COM+
CN421
(BK)
(BU)
CN422
3
2
2
1
1
3
CN421
(BK)
(BU)
CN422
3
2
+
2
1
1
3
current
direction
Current generator
External
analog input
+
current
direction
Method
Input T(A), T(B)
4mA :T(A)
20mA:T(B)
S/W default
T(A)=10°C
T(B)=70°C.
*All setting with a controller.
T(B)°C
T(A)°C
4mA
20mA
la
Conversion equation:To=[{T(B) - T(A)}/16] × Ia + [ T(A) - {T(B) - T(A)}/4]
To: set temperature, Ia: analogue input value (mA)
Calculation example: T(A)=30°C, T(B)=70°C, Ia=10mA
Conversion equation: To=2.5 × Ia+20 To=45°C
Changeable with
PAR-W21MAA