Carrier AQUASMART 30EX Series Installation Operation & Maintenance page 30

4. Instalation (cont.)
Maximum water fl ow on the evaporator
This is limited by the pressure drop allowed in the evaporator.
One must ensure a minimum Δ in the evaporator of 2.8 K,
which corresponds to a water fl ow of 0.9 l/s per kW.
Water fl ow into the loop
The minimum volume of the water loop, in liters, is given by
the following formula:
Volume = CAP (kW) x N * = liters, where CAP is the nominal
cooling capacity at nominal operating conditions.
*See the Application table below:
Application
Air conditioning
Industrial cooling
For applications in industrial cooling, where the water
temperature levels must be stable, the values above must
be increased. We recommend that you contact the factory
for these special applications.
Entrada de
Water
água
Inlet
Saída de
Water
água
Outlet
FIG. 21 - Interconnection diagram with by-pass
30
6
See NOTE
NOTE
Acionamento Pump
Drive
da bomba
REWT
RLWT
By-pass
This volume is necessary for temperature stability and accuracy.
To achieve this volume, it may be necessary to add a reservoir
tank to the circuit. This tank must be equipped with baffl es
to allow mixing of the fl uid water. Please check the examples
below.
When using a bypass on the water outlet to the water inlet, the
minimum volume of water in the loop must be considered. If it is
not considered, the volume of water circulating in the units will
be too small and the units may oscillate and even trigger alarms.
(See Figure 21 by-pass below).
Mestre Master Escrava
01
ULWT
WFC
Bad Good
Bad Good
Slave
02
ULWT
WFC
Escrava Slave
08
ULWT
WFC