CHILLER 607NT-608NT User manual N - REV20160118_EN.docx
Page 7 of 18
3.2
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.
Select a location for noise considerations. In some location, acoustic baffles may be
required.
4.
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 45°C with relative humidity below 90% without
condensing.
5.
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.
6.
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.
3.3
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 contact = General
ALARM
)
Important
: in case of connecting two or more units in parallel the digital inputs of each unit must be
kept separated
3.4
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