Water Connections; Connection To The System; Minimum Hydraulic Circuit Contents - RHOSS TCAEBY 269 Mode D'emploi

WATER CONNECTIONS

Connection to the system

IMPORTANT!
The layout of the water system and connection of the system to the unit must be
carried out in conformity with local and national rules in force.
IMPORTANT!
We recommend installing isolating valves that isolate the unit from the rest of the
time to time.
The unit is designed for outdoor installation.
The unit is provided with Victaulic type hydraulic connections on the
water inlet and outlet of the air conditioning system.
The unit should be positioned to comply with the minimum recommen-
ded clearances, bearing in mind the access to water and electrical
connections.
The unit can be equipped with anti-vibration mountings on request
(SAM).
Shut-off valves must be installed that isolate the unit from the rest of
the system. Elastic connection joints and system/machine drain taps
MUM/MINIMUM values indicated in the
Correct installation and positioning includes levelling the unit on a sur-
face capable of bearing its weight.

Minimum hydraulic circuit contents

For proper unit operation, a minimum amount of water must be
ensured in the hydraulic system. The minimum water content is
determined on the basis of the unit's nominal cooling capacity (or
heating capacity in the case of heat pumps) (table A Technical Data),
If the minimum content in the system is below the minimum value
indicated or calculated, it is advisable to select the TANK&PUMP ac-
cessory complete with inertial storage tank, and install an additional
tank if necessary. However, it is always recommended to use a stor-
age tank with greater system water content in process applications to
guarantee high system thermal inertia.
The minimum water content of the circuit is 2 l/kW
Model TCAEBY
Hydraulic technical data
Expansion tank capacity
Expansion tank pre-load
Expansion vessel maximum pressure
safety valve
Water contents TCAEBY
Plate heat exchangers
Tank water content (ASP/ASDP)
Model TCAEY T-S-Q and THAEY T-S-Q
Hydraulic technical data
Expansion tank capacity
Expansion tank pre-load
Expansion vessel maximum pressure
safety valve
Water contents TCAEY T-S-Q and THAEY T-S-Q
Plate heat exchangers
Tube and shell heat exchangers (STE accessory) TCAEY
Tube and shell heat exchangers (STE accessory) THAEY
Tank water content (ASP/ASDP)
Section II :: Installation and maintenance
-
section.
269
l 12
barg 2
barg 10
barg 6
l 4,8
l 230
269
l 12
barg 2
barg 10
barg 6
l 5,8
l 40
l 40
l 230
67
During long periods of inactivity, it is advisable to drain the water from
the system.
It is possible to avoid draining the water by adding ethylene glycol to
the water circuit (see "Use of antifreeze solutions").
The size of the expansion tank must be calculated by the installer
depending on the system. In the case of models without a pump, the
It is advisable to install an air bleed valve.
Once the connections to the unit are made, check that none of the
pipes leak, and bleed the air from the system.
Installation and management of utility pump outside of unit
The circulation pump to be installed in the main water circuit should
be selected to overcome any pressure drops, at nominal rates of
user pump operation must be subordinated to the machine operation;
the microprocessor controller runs the control and management of
the pump according to the following logic: upon the machine ignition
has priority over the rest of the system. During the start-up phase, the
temporarily excluded, for a preset period, in order to avoid oscillations
caused by air bubbles or turbulence in the water circuit. After this time,
on working all the time the unit is in operation, and it shuts down only
at the switch-off command. After switch-off, the pump will continue to
the residual heat in the water exchanger
See also section attachment "hydraulic circuits".
Example:
THAETY 2146 QT = 151 kW
If the unit envisages control with the AdaptativeFunction Plus func-
tion, the minimum system content must have:
QT (kW) x 2 l/kW = 151 kW x 2 l/kW = 302 l
279 289 296
12 12 12
2 2 2
10 10 10
6 6 6
4,8 5,8 5,8
230 230 230
279 289 296
12 12
12
2 2 2
10 10 10
6 6 6
6,6 7,8 7,8
38 38 36
38 38 36
230 230 230
2112
12
2
10
6
7,8
230
2112 2125 2146
12 12 12
2 2 2
10 10 10
6 6 6
8,8 10 11
35 35 59
64 64 59
440 440 440
EN