Installation Example - Gree EVO Série Manuel D'utilisateur

Mini Chiller

6 Installation Example

CASE 1: Connection of Terminals for Heating and Cooling (Under floor Loop, Fan Coil Unit,
and Radiator)
Notes:
① The two-way valve is very important to prevent dew condensation on the floor and radiator while
cooling mode;
② Type of thermostat and specification should be complied with installation of this manual;
③ The by-pass valve must be installed to secure enough water flow rate, and should be installed
at the collector.
CASE 2: Connection between the Electric Heater and the Main Unit
Two groups of electric heaters are available, as well as control terminals for two groups of auxiliary
electric heaters. These two groups of electric heaters can be activated at the same time. When only
one group of the electric heater is installed, please follow the wiring of any group of the diagram
shown below.
(1) See the following statement for installation of two groups of auxiliary electric heaters, including
wiring of the AC contactor, the thermostat and the tank-type electric heater.
Wiring of the AC Contactor
◆
L1, L2 and L3 are three-phase input terminals. T1, T2 and T3 are three-phase output terminals. A1
and A2 are terminals of input and output signals which are used to control the AC contactors. NO and
NC are normally open and closed terminals of the AC contactors.
The tank-type electric heater and AC contacts should be selected according to the selection
instructions and the thermostat and its upper limit should be decided by the protection function of the
electric heater.
In order to ensure product quality and service life, it is unallowable to do wiring directly at the main
board by the user themselves to prevent the main board from being damaged. The AC contactor
control signal input terminal X17 (AC contactor 1) and X18 (AC contactor 2) of the main board AP1
should be connected to terminal 7 and terminal 8 of the electric box. The single pins of terminal
CN26 (AC contactor 1) and CN27 (AC contactor 2) should be connected to terminal 35 and 36 of the
electric box. Besides, other two pins of CN 26 and CN27 both should be connected to XT2 (see the
diagram below for more details).
Only qualified cables are allowed and see the table below for the corresponding wiring terminals.
T
Remote room thermostat (field supplied)
B Bypass valve (field supplied)
High temperature line
Under Floor Coil
T
M
FCU 1 FCU 2
M
2-Way Vavle (field supplied)
Controll Cable
Low temperature line
7
B
Radiator
eries