Hydraulic Connections; Diameters Of The Hydraulic And Refrigeration Connections - CIAT DYNACIAT power LG Manuel D'instructions

13 HYDRAULIC CONNECTIONS

13.1 Diameters of the hydraulic and refrigeration connections

power
DYNACIAT
Chilled water inlet/outlet
Cooling water inlet/outlet
These values can be considered identical to the copper piping diameters for a maximum developed length of 15 m with a
maximum slope of 6 m.
Hydraulic connections must be made in accordance with
the diagram delivered with the unit. This diagram shows the
positions and dimensions of the water inlets and outlets on the
exchangers.
Follow the requirements below when making these connections:
- Ensure the inlet and outlet pipes are connected in the
direction shown on the unit.
- In order to meet the operating conditions (flow rates, pressure
loss), a sizing calculation must be performed. The diameter
of the pipes may therefore be different to that specified on
the exchanger.
- The pipes and tubes should not transmit any axial or radial
forces to the exchangers or any vibrations.
- The water must be analysed and, if necessary, treated (we
recommend contacting a qualified water treatment specialist).
The analysis will reveal whether the water is suitable for use
with the various materials it will come into contact with and
prevent the formation of electrolytic couples:
• 99.9% copper tubes brazed with copper and silver
• Threaded bronze couplings or flat steel flanges, depending
on the unit model
• Plate heat exchangers and AISI 316 - 1.4401 stainless steel
connections brazed with copper and silver
- The water circuit must have as few bends and horizontal
sections at different levels as possible.
- Install shut-off valves near the water inlets and outlets in order
to isolate the exchangers.
- Install manual or automatic air bleed valves at the high points
of the circuit(s).
- The manual or automatic air bleed valves fitted on the
machine are not intended to be used to bleed the rest of the
hydraulic circuit.
- A static pressure of 1 bar must be maintained at all times
(machine and pump off or on) on the pump intake.
- Install drain connections at all circuit low point(s).
- Install the accessories that are essential for any hydraulic
circuit (balancing valves, expansion vessel, safety valve,
thermometer pockets, etc.).
- Insulate the pipes and tubes (after performing leak tests) in
order to reduce heat losses and prevent damage from frost.
1
2
700 V 800 V
Ø DN 100 PN 16 - VICTAULIC
 
Ø DN 100 PN 16 - VICTAULIC
 
DYNACIAT power
LG – LGP
900 V 1000 V 1100 V 1200 V 1400 V 1600 V 1800 V 2100 V 2400 V
DN 125 PN 16 - VICTAULIC
DN 125 PN 16 - VICTAULIC
- Install heating elements on all pipes that could be exposed
to frost.
- The installer must provide the necessary systems for filling
and draining the energy transfer fluid.
- To keep the pressure in the coolant circuit below the intended
operating pressure, avoid introducing static or dynamic
pressure into the circuit.
IMPORTANT:
- To prevent any risk of fouling or damage to the plate heat
exchangers (evaporator and condenser), it is essential to
fit a strainer to the water inlets as close as possible to the
exchangers and in a place which is easily accessible for
disassembly and cleaning. The mesh size of this filter must
be more than 800 µm (see price option)
- Flexible couplings must be used on the hydraulic pipework
(evaporator and condenser).
The system pipework must be secured to the wall of the
building and must not place any additional load on the unit.
- Using untreated or incorrectly treated water may cause
corrosion or erosion or the formation of scale, algae or sludge
deposits. CIAT shall not be held liable for damage resulting
from the use of untreated or incorrectly treated water, or of
saline or brackish water.
When the (DYNACIAT
pump, the maximum water return temperature of the
installation will be 55 °C maximum. Never series-connect
the condenser with a high-temperature water network
(boiler). Doing so will result in damage.
NOTE: The maximum operating pressure on the water side
should be 10 bar (evaporator and condenser). The water flow
sensor is supplied fitted to the unit. Stopping the pumps
will automatically cause the unit to stop to avoid any risk
of freezing. The pump or pumps must be slaved to the
refrigeration unit (auxiliary operation switch of the pump to
be wired).
EN - 8
4
3
DN 150 PN 16 VICTAULIC
DN 150 PN 16 VICTAULIC
LGP) device is used as a heat
power