5- Instruction for the fitter:
The fitter has to read the following notice and explain the instructions to the user.
5-1 Devices of control and safety:
The heat pump is equipped with:
2 control devices:
A defrost temperature probe located on the evaporator, starts the defrost sequence.
A thermal probe located on the exchanger, ensures the cut of the heat pump when the temperature of the water reaches
the temperature instructed
The meaning of code name:
T1: water temperature
T2: ambient temperature
T3: exhaust temperature from compressor
T4: coil temperature in outdoor heat exchanger
TC: water temperature setting
Control function:
1. TC can be set between 10
℃
-60
℃
in heating mode. Original TC is 45
℃
. When T1≤TC-1
℃
, Compressor and fan motor
start; When T1≥TC+1
℃
, Compressor and fan motor stop.
When compressor is running, if T2≤14
℃
, the four way valve2 on; if T2≥16
℃
, the four way valve2 off.
5-2 Defrost operation:
1. Defrost:
The system begins to defrost if the following three terms are met in the same time:
a. T4
≤
-7
℃
lasts for a while;
b. compressor runs continuously for more than 5 minutes
c. Compressor runs accumulative total for 45 minutes(the interval between two defrost is a cycle, time accumulates)
While the system begin to defrost, compressor and fan motor stop at first and four way valve1 is on after 1
minutes and
begins to work, compressor restarts after it stop for 3 minutes. If the sensor for T4 is damaged, the system begins defrosting
after compressor runs continuously for 45 minutes.
2. Terms of defrost exiting:
When defrosting time reach 3 minutes and T4 reaches 10
℃
or defrosting time reaches 8 minutes, defrost exits and enter
heating water mode. While defrost exiting, after compressor and fan motor stop for 1 minute, four way valve1 is off.
Compress restart after it stops for 3 minutes, the system will run the mode the same as before defrost.
5-3 Instruction of the solar coil
Instruction of the solar coil
Type
Data
150L
200L
300L
Thickness (mm)
1.0
1.0
1.0
Length (m)
19
19
19
Diameter(mm)
15.88
15.88
15.88
Connecting Size (inch)
1/2’ male thread
1/2’ male thread
1/2’ male thread
16
Summary of Contents for KS25-C120
Page 18: ...8 Gas Flow Diagram 18...
