26
2) Applicable standard of water quality for the unit
Table 8-8
PH value
6.8~8.0
Sulfate
<50ppm
Total hardness
<70ppm
Silicon
<30ppm
Conductivity
<200μV/cm (25°C)
Iron content
<0.3ppm
Sulfide ion
No
Sodium ion
No requirement
Chloride ion
<50ppm
Calcium ion
<50ppm
Ammonia ion
No
/
/
8.5.9 Installation of multi-module water system pipeline
Multi-module combination installation involves special design of the unit, so relevant explanation is given as follows.
1) Installation mode of multi-module combination water system pipeline
....
No.n module
No. (n-1) address
No. (n-1) module
No. (n-2) address
No.1 module
No.0 address
Drill dead hole at the
position, and move the total
euent temperature sensor at
No.0 address to the position
Pump
Fig.8-22 Installation of multi-module (no more than 16 modules)
2) Table of diameter parameters of main inlet and outlet pipes
Table 8-9
Cooling capacity
Total inlet and outlet water pipe inside nominal diameter
15≤Q≤30
DN40
30˂Q≤90
DN50
90˂Q≤140
DN65
140˂Q≤210
DN80
210˂Q≤325
DN100
325˂Q≤510
DN125
510˂Q≤740
DN150
740˂Q≤1300
DN200
1300˂Q≤2080
DN250
•
Please pay attention to the following items when installing multiple modules:
- Each module corresponds to an address code which cannot be repeated.
- Main water outlet temperature sensing bulb, target flow controller and auxiliary electric heater are under control of the main
module.
- One wired controller and one target flow controller are required and connected on the main module.
- The unit can be started up through the wired controller only after all addresses are set and the aforementioned items are
determined. The wire length betweent the wired controller and outdoor unit should be <500m.
CAUTION
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