External Connectivity - TESY HPWH 2.1 260 U02 S Instrucciones De Uso Y Mantenimiento

H U
9.

EXTERNAL CONNECTIVITY

9.1. Solar collector (thermal power) integration
The illustration (Fig. 8) shows an example of solar power system integration. It is obligatory to install all hydraulic
elements shown on Fig. 8
Connection and adjustment of main controller should be done as follow: The Parameter no. 14 must be configured by
the installer (2 = solar water circulation). External circulation pump 15, Fig.8 (I max = 5A) must be connected, as well as the
solar thermosensor 18 and flow switch 17 (optional). If the flow switch is not present, short connect contact FS 17 (Fig. 13).
The logic of solar thermal power function is as follow:
•
The pump will start when the below conditions are satisfied at the same time:
o
The unit is on;
T6 (temperature of solar collector - thermosensor 18 – Fig. 8) ≥ T2 (lower tank water temperature) + parameter 17;
o
T2 (lower tank water temperature) ≤78°C；
o
•
The pump will stop when one of the below conditions is satisfied:
o
The unit is off;
T6 (temperature of solar collector - thermosensor 18 – Fig. 8) ≥ T2 (lower tank water temperature) + parameter 18
o
T2 (lower tank water temperature) ≥83°C；
o
While solar thermal function is active, the compressor of heat pump is running too!
Parameters for solar thermal function:
Code Description
14 I Type of water pump
17 I The temperature difference to start the solar water
pump
18 I The temperature difference to stop the solar water
pump
15. Recirculating pump; I max = 5A (solar or recirculation
17. Flow switch
Device's solar heat exchanger is intended for use with circulating clean water and mixture of it and
Propylene Glycol at liquid state. The presence of anticorrosion additives is obligatory. Using different
fluids in different states leads to warranty violation!
Only qualified persons should design and install solar loop with all elements according to the Fig. 8!
Flow switch: After the pump is running for 30 sec, if the water flow switch signal is checked to OFF for
5 sec, the pump stops. The pump will restart after 3 min. If this malfunction occurs 3 times in 30 min,
the pump cannot start until the unit is re-powered. The relating error code will be shown on the
controller. Only the pump will be stopped but not the unit itself.
Tank water setting temp
"T calc".
(real value)
Fig. 13. Wiring external devices
TS1
Range Default
0/1/2 0
5-20℃ 5℃
1-4℃ 2℃
18. External thermosensor (solar or recirculation)
19. PV switch
23
Remark
0: no water pump
1: (circulation pump)
2: (solar water pump)
Adjustable
Adjustable