O P E R A T I O N O F O P T I O N A L F E A T U R E; Bow Thruster; Helm Air Conditioner - Grady-White 330 Express Owner's Manual

O p e r a t i o n O f O p t i o n a l F e a t u r e s
B T
OW HRUSTER
The optional bow thruster aids in maneuvering your boat. The outboard engines can control
the direction of the stern while the bow thruster drives the bow. Use the joystick control located at
the helm to control the thruster. The emergency shut-off switch provides a simple method to
quickly disconnect power from the thruster motor. Depress this button to disengage the thruster in
the event of an emergency. Reference "Bow Thruster Layout" on page 35 for a layout diagram.
H A C
ELM IR ONDITIONER
The helm air conditioning system operates on AC power only; therefore, the generator or
dockside power must be in use. The helm air conditioner switch on the AC/DC panel activates the
unit's control pad located in the galley area near the cabin door. The air/cooler pump switch must
also be on and the air conditioner seacock must be open to supply the unit with raw water. The
thermostatic control is similar to household units. A supply vent is located in the port deckwing
insert and the return vent is located forward of the port helm seat. The helm air conditioning unit
is located directly outboard of the return vent. The condensation drain for the unit drains to the
shower sump. Therefore, the shower sump pump should be switched on when using the air
conditioner to remove any condensation. Refer to the Operation and Maintenance manual in your
Owner's Packet for specific instructions on using the unit. See "Helm Air Conditioning Layout"
on page 8–26 for a layout of the helm air conditioning system. See "120V Air Con. & Coolers
One-line Diagram" on page 8–42 for a wiring diagram.
If your boat is removed from the water, leaving the seacock open will drain the water in the helm
air conditioning system. This may cause an airlock in the air conditioner water pump in
subsequent operation. To prevent this drainage, close the air conditioner seacock. If the boat is
being winterized, leave the seacock open so the water can drain. Then, remove any remaining
water by blowing pressurized air through the system. See the Operation and Maintenance
Manual included in your Owner's Packet for additional winterizing information.
To avoid restriction due to debris in the raw water intake strainer, turn off the helm air
conditioner and close the intake seacock while docking or operating in shallow water.
With the helm air and refrigerated boxes options installed, your distribution panel will contain
the air cooler pump, air conditioner, helm air conditioner, and the refrigerated boxes. Turning all
of these accessories on at the same time will create a load that is greater than 30 amps. This load
will exceed the capacity of the shore breaker causing it to trip. However, this tripping may be
avoided by turning these accessories on in stages. The amperage draw of each accessory is at its
highest level during initial startup. The total amperage draw from these accessories may be kept
below 30A by turning on each accessory individually, letting the startup phase finish (i.e. let the
cabin cool down, etc.), and then turning on the next accessory.
N O T I C E
!
C A U T I O N
8–19
3 3 0 E
X P R E S S