Carrier 30KAV-ZE Series - Page 67

12 - OPTIONS
12.1.2 - Flow rate calculation
Units equipped with the hydraulic module enable the ow rate to
be monitored directly via the unit's user interface (see the control
manual).
The pressure of the uid is measured by the pressure sensors at
the inlet of the pump and outlet of the unit. The system calculates
the ow rate corresponding to measured di󰀨erential pressure.
The calculations are only applicable for cold water. For a brine
solution (e.g.: glycol) other than cold water, the calculated ow
rate will not be accurate.
These values are given as a guide for the user and may vary
depending on fouling of the hydraulic circuit and correct operation
of the pump. The manufacturer cannot be held liable for the
accuracy of this information.
12.1.3 - Hydraulic circuit diagram
The hydraulic module options are compatible only with closed loops.
The use of the hydraulic module on open systems is prohibited.
Typical hydraulic circuit diagram with hydraulic module
T
T
P
P
B
C
D
F
E
G
L
Q
Q
V
V
W
H
M
R
I
X
J
T
T
K
U
U
N
P
P
O
Option
Option
Option
Option
Key
Components of the unit and hydraulic module
B
Screen lter (particle size of 1.2 mm)
C
Water drain tap
D
Relief valve
E
Pressure sensor
NOTE: Provides pressure information for the pump suction inlet (see
Control manual)
F
Variable speed dual pump (high or low pressure)
G
Water exchanger ow rate sensor
H
Temperature probe
NOTE: Provides temperature information for the water exchanger inlet
(see Control manual)
I
Evaporator
J
Water purge (evaporator)
K
Air purge (evaporator)
L
Temperature probe
NOTE: Provides temperature information for the water exchanger outlet
(see Control manual)
M
Pressure sensor
NOTE: Provides pressure information for the water exchanger outlet (see
Control manual)
N
Expansion vessel (Option 293)
O
Heater for evaporator frost protection (option 41A & 41B)
P
Heater for hydraulic module frost protection (option 41B)
Installation components
Q
Pressure gauge
R
Bypass valve for frost protection (if shut-o󰀨 valves (item 19) are closed during
winter)
S
Water ow control valve
T
Shut-o󰀨 valve
U
Pocket
V
Flexible connection
W
Charge valve
X
Air bleed
……... Included with the unit
- - - - - Hydraulic module (unit with hydraulic module option 116A & 116W)
NOTES:
- The system must be protected against freezing.
- The unit's hydraulic module and the water type heat exchanger may be
protected against freezing using electric heaters and heat trace cables
(factory-tted options 41A & 41B).
- The pressure sensors are assembled on connections without Schrader.
Depressurise and drain the system before any work.
O
O
O
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