96
Port
Description
Logic
Remark
CN5-
XIAO
Zone1 pump
1. Startup condition (and)
a. Main controller on or sub controller on
b. Or
①
Only controled by main and sub controllers, and thermo on
②
When controled by third party controller, Zone1 has indoor
controller signal
③
When room thermostat control, Zone1 Tai on
④
When there's hot water requirement and hot water thermo on
2. OFF condition (or)
a. Main controller off or sub controller off.
b. And
①
Only controlled by main and sub controllers, and thermo on
②
When controled by third party controller, Zone1 has indoor
controller signal on
③
When controlled by room thermostat, Zone1 Tai off
④
No hot water requirement or there's hot water requirement and
hot water thermo off
Water pump is foreced to open when in defrosting, oil return, anti
freezing operation;
Pump delay 1min OFF
Pump stop during flow error
220V
CN6-
XIAO
Zone2 pump
Note
：
When zone2 without zoning, pump no output
;
When zone 2 has
zoning, pump will be controlled by master controller water temp.
setting or zone controller 2.
1. Startup condition(and):
a. Main controller ON or sub controller ON
b. Or
①
Only control by main/sub controller, set heating/cooling mode
②
When controlled by 3rd party controller, zone2 has indoor
controller signal.
③
When controlled by room thermostat, zone2 indoor ambient
temp. sensor ON.
2. OFF condition (OR):
a. Main controller OFF OR sub controller OFF
b. And
①
Only controlled by main/sub controller, without heating/cooling
mode
②
When controlled by 3rd party controller, zone2 has indoor
controller signal
③
When controlled by room thermostat, zone2 indoor ambient
temp sensor OFF.
Pump forced ON during defrosting, oil return, anti-freezing
Pump delay 1min OFF
Pump stop during flow error
Zone2 pump OFF when in hot water priority operation
220V
CN* indicates the terminal on main control board
CN*-XIAO indicates the terminal on sub control board
