BYC-007TG1 
BYC-010TG1 
BYC-013TG1   
BYC-017TG1   
BYC-021TG1 
 
●The  pipe  pressure and  flow  rate  should  be  calculated  before  selecting the  diameter  of  the  pipe, 
pressure drop range is 0.3〜0.5 kgf/cm2(3〜5m"head pipe flow rate range is 1 .2〜2. 5 m/s. 
●The hydraulic calculation should be made after selecting the pipe diameter. If the resistance is more 
than the pump head, then a more powerful pump or larger pipes are required. 
 
5.2.4 Required Water Quality 
● Bad quality water will produce more lime scale and sand: this kind of water should be filtered and 
demineralized. 
●The water quality should be analyzed before operating the unit: PH value, conductivity, Chloride ion 
concentration and sulphate ion concentration should be checked. 
●Acceptable water quality shown below: 
● Suggested filter mesh = 40. 
 
 
 
6.1 Selection of the water pump 
●The circulation pump is required for the system to operate, there is a terminal connection for the 
pump (single phase) 
NOTE    For single-phase pumps, please check the wiring diagram. 
●Head  of  circulation  pump  =  height  difference  between  water  level  and  main  unit  +  total  pipeline 
resistance (determined by the hydraulic calculation) + pressure loss of main unit (see nameplate on 
heat pump). 
NOTE    Multiple units are installed in parallel place more demand on the water pump 
requirement. 
 
6. Installation of optional accessories