CAUTION
CAUTION
5
The choice and installation of components is the responsibility of the
installer who should follow good working practice and current
legislation. Before connecting the pipes, make sure they do not
contain stones, sand, rust, dross or other foreign bodies which might
damage the unit.Construction of a bypass is recommended to enable
the pipes to be washed through without having to disconnect the unit
(see drain valves). The connection piping should be supported in
such a way as to avoid it weighing on the unit.It is recommended
that the following devices are installed in the water circuit of the
evaporator.
A hydraulic safety valve shall be mounted in water system, which
should open constantly.
If the installation requires a useful head higher than that obtained by
installing a pump assembly and storage tank, it is recommended that
an additional pump is installed on the unit. Provided the additional
pump installed inside of unit, the pump must connected close to
plate heat exchanger. Provided the pump installed outside of unit,
the pump shall be connected at water pipe’s outlet.The pump can be
easily installed on the unit y removing the pump connection pipe.
Connect to terminal PL, PN on the electrical panel.
The chillers must be provided with a filling/top-up system
connected to the return line and a drain cock in the lowest part
of the installation.Installations containinganti-freeze or covered
by specific legislation must be fitted with hydraulic
disconnectors.
The manufactureris not liable for obstruction, breakage or noise
resulting from the failure to install filters or vibration dampers.
Particular types of water used for fillingor topping up must be
treated with appropriate treatment systems. For reference values,
see the table.
6
6. WATER PIPE INSTALLATION
.1 Connection drawing of pipeline system
1
Factory Connections
Installer Connections
A
F
WATER INLET
WATER OUTLET
3
4
7
2
5
6
8
9
10
10
11
12
14
13
11
6
9
9
1
Plate Heat Exchange
2
Differential Pressure Switch
3
Automatic Discharge Valve
4
Expansion Tank
5
Auto-watet replenishing
6
Circulating Pump
7
Pressure Gauge
8
Safety Valve
9
Drain/Chemical Washing Valve
10 Flexible Joint
11 Thermometer
12 Calibrating Valve
13 Y-shaped Filter
14 Water FlowSwitch
7
7
In certain occasion (especially in manufacture cooling
process), for conforming the system water content requirement,
it’s necessary to mount a tank equipping with a cut-off baffle at the
system to avoid water short-circuit, Please see the following
schemes:
kW is the unit for cooling capacity and L is the unit for G
water flow in the formula counting the minimum water flow.
Comfortable type air conditioner
G= cooling capacity×2.6L
6.2 Design of the tank in the system
The minimum chilled water flow is shown in the table 6-1
If the system flow is less than the minimum unit flow rate,
the evaporator flow can be recirculated, as shown in the
diagram.
6.3 Minimum chilled water flow
Evaporator
Recirculation
For minimum chilled water flow rate
