Mitsubishi Electric PAC-IF032B-E Installation And Operation Manual page 20

5. Dip switch setting
The priority order of external signals is DHW>Heating>Heating ECO>Holiday>Cooling. However, the priority order might be changed if you put DHW, Heating or Heating
ECO or Holiday and Cooling signals at the same time.
When automatic change over mode is selected DHW always has priority over space heating.
System example
Example 1:
Only our remote controller is used for system control. No local
system controller exists.
Target temperature for each mode and Heating or Heating ECO or Cool-
ing mode are set with remote controller. Automatic change over mode is
selected (SW1-8 or SW1-9 must be switched to OFF). The system will
automatically change from Heating or Heating ECO or Cooling to DHW
mode and back dependent on the DHW tank temperature.
Example 2:
A local timer and our remote controller are used for system control.
Target temperature for each mode and Heating or Heating ECO or Cool-
ing mode are set with remote controller. A local timer is used rather than
automatic change over mode (SW1-8 and SW1-9 must be switched
to ON). The system runs in Heating or Heating ECO or Cooling until a
signal is received from the local timer (the signal received from local
timer must be longer than 200 ms). The system then switches to DHW
mode. Once DHW mode is satisfied the system automatically reverts to
Heating or Heating ECO or Cooling.
Example 3:
A Local controller and our remote controller are used for system
control.
Target temperatures for each mode are set with remote controller. A
local controller is used to select the running mode. Automatic change
over mode is available when SW1-8 and SW1-9 is OFF and the FTC2B
receives external signals for Heating or Heating ECO or Cooling, and
DHW at the same time from the local controller. Automatic change over
mode is not available when SW1-8 and SW1-9 is ON.
<IMPORTANT NOTE>
In this system, the operation mode must be switched by a local control-
ler which can output separate signals for each operation mode.
(This can be realised by using a schedule timer and relays.)
Example 4:
Only a Local controller is used for system control.
The system operates in the same way as Example 3 except that the
target temperatures for each mode must also be inputted via the
analogue signal
from the local controller. (SW1-8 and SW1-9 must be switched to ON)
<IMPORTANT NOTE>
In this system, the operation mode must be switched by a local controller
which can output separate signals for each operation mode. In addition,
the target temperature in each operation mode must be sent by analog
signal from the local controller.
20
SW1-1 OFF/SW1-2 OFF/SW1-8 OFF/SW1-9 OFF
or SW1-1 OFF/SW1-2 OFF/SW1-8 OFF/SW1-9 ON
or SW1-1 OFF/SW1-2 OFF/SW1-8 ON/SW1-9 OFF
Flow
switch
IN1 IN2 IN3
Emergency Legionella Flow
prevention switch
TH2 TH2
THW1
THW1
THW2
THW2
THW5 THW5
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
Water Booster
circulation heater 2
pump
Booster
heater 1
SW1-1 OFF/SW1-2 OFF/SW1-8 ON/SW1-9 ON
Flow
switch
IN1 IN2 IN3
Emergency Legionella Flow
prevention switch
TH2
TH2
THW1
THW1
THW2 THW2
THW5 THW5
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
Water Booster
circulation heater 2
pump
Booster
heater 1
SW1-1 ON/SW1-2 OFF/SW1-8 OFF/SW1-9 OFF
or SW1-1 ON/SW1-2 OFF/SW1-8 ON/SW1-9 ON
Local system controller
Flow
switch
IN1 IN2 IN3
Emergency Legionella Flow
prevention switch
TH2
TH2
THW1
THW1
THW2
THW2
THW5 THW5
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
Water Booster
circulation heater 2
pump
Booster
heater 1
SW1-1 OFF/SW1-2 ON/SW1-8 ON/SW1-9 ON
or SW1-1 ON/SW1-2 ON/SW1-8 ON/SW1-9 ON
Local system controller
Flow
switch
IN1 IN2 IN3
Emergency Legionella Flow
prevention switch
TH2
TH2
THW1
THW1
THW2 THW2
THW5 THW5
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
Water Booster
circulation heater 2
pump
Booster
heater 1
IN4 IN5 IN6 IN7 IN8
Cooling Heating Heating DHW Holiday
ECO
Ana.IN1
FTC2B
Room thermostat
3-port
Error
valve
Immersion
Defrost
heater
Remote controller
Local timer
External input
IN4 IN5 IN6 IN7 IN8
Cooling Heating Heating DHW Holiday
ECO
Ana.IN1
FTC2B
Room thermostat
3-port
Error
valve
Immersion
Defrost
heater
Remote controller
External input
IN4 IN5 IN6 IN7 IN8
Cooling Heating Heating DHW Holiday
ECO
Ana.IN1
FTC2B
Room thermostat
3-port
Error
valve
Immersion
Defrost
heater
Remote controller
External input
Analog input
IN4 IN5 IN6 IN7 IN8
Cooling Heating Heating DHW Holiday
ECO
Ana.IN2
FTC2B
3-port
Error
valve
Immersion
Defrost
heater