Panasonic WH-MXC16J9E8 Service Manual page 75

11. Bivalent connection
Set if heat pump linked with boiler operation.
Connect the start signal of the boiler in boiler contact terminal (main PCB).
Set Bivalent connection to YES.
After that, please begin setting according to remote controller instruction.
Boiler icon will be displayed on remote controller top screen.
After Bivalent connection Set YES, there is two option of control pattern to be select, (SG Ready / Auto)
1) SG ready (Only available to set when Optional PCB set to YES)
- SG Ready input from Optional PCB terminal control ON/OFF of boiler and heat pump as below condition
SG signal
Vcc-bit1 Vcc-bit2
Open Open
Short Open
Open Short
Short Short
* This bivalent SG ready input is sharing same terminal as [16. SG ready] connection. Only one of these two setting can be set at the same time.
When one is set, another setting will reset to not set.
2) Auto (If Optional PCB no Set, bivalent control pattern will set to this auto as default value)
There are 3 different modes in the boiler operation. Movement of each modes are shown below.
Alternative (switch to boiler operation when drops below setting temperature)
①
Parallel (allow boiler operation when drops below setting temperature)
②
Advanced Parallel (able to slightly delay boiler operation time of parallel operation)
③
When the boiler operation is "ON", "boiler contact" is "ON", "_"(underscore) will be displayed below the boiler icon.
Please set target temperature of boiler to be the same as heat pump temperature.
When boiler temperature is higher than heat pump temperature, zone temperature cannot be achieved if mixing valve is not installed.
This product only allows one signal to control the boiler operation. Operation setting of boiler shall be responsible by installer.
Alternative mode
operate boiler only
-10°C (setting from remote controller)
Advanced Parallel mode
For heating
operate boiler and heat
pump simultaneously
-10°C (setting from remote controller)
AND
Although heat pump operates
but water temperature does
not reach this temperature for
more than 30 mins (setting
from remote controller)
Boiler temp. ON Boiler temp. OFF
= Setting -8°C = Setting -2°C
(setting from (setting from
remote controller) remote controller)
In Advanced Parallel mode, setting for both heating and tank can be made
simultaneously. During operation of "Heating/Tank" mode, when each time
the mode is switched, the boiler output will be reset to OFF. Please have
good understanding on the boiler control characteristic in order to select the
optimal setting for the system.
12. External SW
Initial setting: No
Able to turn ON/OFF the operation by external switch.
Initial setting: No
Operation pattern
Heat pump OFF, Boiler OFF
Heat pump ON, Boiler OFF
Heat pump OFF, Boiler ON
Heat pump ON, Boiler ON
operate heat pump only
Outdoor temp.
operate heat pump only
Outdoor temp.
Circulation water temp.
Setting temp
System setup
Tank heater
Base pan heater
Alternative outdoor sensor
Bivalent connection
Parallel mode
operate boiler and heat
pump simultaneously
-10°C (setting from remote controller)
For DHW tank
operate boiler and heat
pump simultaneously
Tank temp. Heat pump
Lowering thermo ON
Tank
Boiling initial
temp.
temp.
Heat
pump 30 min (setting from
remote control)
Boiler
System setup
Base pan heater
Alternative outdoor sensor
Bivalent connection
External SW
75
12:00am,Mon
Select Confirm
operate heat pump only
operate heat pump only
-10°C (setting from remote controller)
AND
If actual tank temp. does
not achieve the setting
temp. within 30min achieved, both
(setting from remote
controller), the boiler
turn ON
12:00am,Mon
Select Confirm
Outdoor temp.
Outdoor temp.
When tank
temp. is
operations
stop
Tank setting
temp.
time