FRIGOMAR ENG - CU50VFD-CU70VFD 20190108.doc81218 Page 8 of 24
3.4 MOUNTING
1.
The unit shall not be installed above an electronic or electrical panel, circuit breakers or
anything electrical.
2.
Installation and servicing of this system can be hazardous due to system pressure and
electrical components. When working on this equipment, always observe precautions
described in literature, tags and attached labels.
3.
The unit must be installed in a space with sufficient clearance on all sides for proper air
circulation and for services. Sufficient airflow is critical to the proper operation of the units. Air
temperature shall be below 60°C with relative humidity below 90% without condensing.
4.
The chilling unit is equipped with a cupronickel heat exchanger between refrigerant fluid and
seawater. To prevent corrosion due to stray electrical current or voltage, all metallic parts in
contact with seawater must be connected to the ship’s bonding system. A zinc anode is
mounted at the inlet of cupronickel heat exchanger: it must be replaced periodically
depending on the degree of wearing. Failure to properly ground and bond the system will
void the warranty.
5.
The axial fan help the system to cool the inverter drive during operation. Be careful the air
intake is not covered or obstructed during operation.
3.5 REMOTE CONTROL (DIGITAL INPUTS)
Digital inputs available:
O
= ON/OFF remote input
(open contact =
Compressor OFF
)
S
= Seasonal remote input (open contact =
HEATING
/ close contact =
COOLING
)
E
= ECO function
(close contact =
ECO
function activated)
A
= Alarm output
(open 230V contact = General
ALARM
)
M
= Minimal Operativity
(open contact =
disable O S E contact
) *
* This contact allows the machine to operate in case of display broken
Important
: in case of connecting two or more units in parallel the digital inputs of each unit must be
kept separated
3.6 HYDRAULIC CONNECTIONS
Recommended water pipe sizes (circulation and seawater):
FLOW RATE m3/h
PUMP INLET PIPE
PUMP DISCHARGE PIPE
0.9 – 1.5
3/4”
5/8”
1.5 – 2.5
1”
3/4”
2.5 – 3.4
1”
1”
WARNING!
Do not cover or
obstruct the air intake
