MEES20K028
PWF
Y
-P-N
MU-E-
BU, P-N
M
U-E2-
A
U
47
13. CONTROL
AIR TO WATER
External input terminal
The piping length must be within 100 m.
External input terminal (refer to [Fig. 1-7-B]) is ineffective when the circuit is open.
Refer to [Table 2] through [Table 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. 3-1-F].
The specifications 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
*1 PWFY-P36NMU-E-BU … Hot Water
PWFY-P36, 72NMU-E2-AU … Heating
*2 Effective when SW 4-3 is set to ON.
*3 Effective when SW 4-4 is set to ON.
*4 PWFY-P36, 72NMU-E2-AU only
*5 When Heating ECO mode is effective, the outlet water
temp. will be changed based on ambient temp.
automatically.
*6 When Anti-freeze mode is effective, the unit will work for
keeping set water temp. automatically.
When setting Heating ECO or Anti-freeze mode, reset all power supply of all units (outdoor/indoor units).
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
[Table 2] TB142A
[Table 4] TB142C
IN1
Pump interlock
COM+
Common
IN5 *1
Hot Water/Heating
[Table 3] TB142B
IN6 *2
Heating ECO *5
IN3
Connection demand
IN7 *3
Anti-freeze *6
IN4
Operation ON/OFF
IN8 *4
Cooling operation
IN1
[Fig.1-7-B]
IN2
IN3
IN4
IN5IN6 IN7 IN8
TB142C
TB142B
TB142A
COM+
0000005923.BOOK 47 ページ 2020年8月6日 木曜日 午後12時38分