DX type water-cooled screw chiller (PCB Control)
MCAC-CTSM-2014-03
80
e Thermometer
f Platinum resistance thermometer
g Air vent
h Water pump
I Drain valve
j Y- shape strainer
Note:
All of water pipe accessories and flow switch is provide by user.
1) Chilled water piping suggested piping as follow
：
Ch
il
le
r
cool
er
WS
c
d
e
g
h
j
i
k
b
Cooler return
water
Cooler outlet water
Return
water
Outlet
water
make-up water
expansion
tank
(
Chiller cooler piping diagrammatic sketch
）
c Flexible connection
b Pressure type temperature controller
e Pressure gauge
d Butterfly valve
g Air vent
h Water pump
i Drain valve
j Y- shape strainer
k Flow switch
Note: All of water pipe accessories and flow switch is provide by user.
User must install flow switch in the outlet pipe of cooler and evaporator, the two sides must be level straight pipe
which length longer than five times of pipe diameter.
2) The water inlet pipeline and drain pipeline shall be connected according to the requirements of
markings on the unit. Generally, the refrigerant pipe side of the evaporator is the chilled water
outlet side.
3) The chilled water pipeline system must be provided with the soft connection, thermometer,
pressure gauge, water filter, electronic scale remover, check valve, target flow controller,
discharge valve, drain valve, stop valve, expansion tank, etc.
3) The water system must be fitted with the water pump with appropriate displacement and head,
so as to ensure normal water supply to the unit. The soft connection shall be used between the
water pump, unit and water system pipelines, and the bracket shall be provided to avoid stress
on the unit. Welding work for installation shall avoid damage to the unit.
(1) Determination of water pump flow:
Flow (m3/h) = (1.1 ~ 1.2) * Unit Cooling Capacity (kW)/5.8
(2) Determination of water pump head:
Head (m) = (Unit Resistance (see product parameters) + Resistance at Maximum End of
Pressure Drop (see product parameters) + Pipeline Resistance (length of the least favorable
loop pipe * 0.05) + Local Resistance (length of the least favorable loop pipe * 0.05 * 0.5)) * (1.1
~ 1.2)
4) The flow switch must be arranged on the drain pipe of the evaporator. The flow switch shall be
Inlet water
Cooler inlet water
