Zodiac Pro 420 User manual

Owner's Manual
Volume 2

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VOLUME 2
DESCRIPTION - BUOYANCY CHAMBER
PROPULSION SYSTEM
INSTALLATION AND CIRCUITS
CONTENTS
PAGE
ÖI - GENERAL DESCRIPTIONS
I-1-Technical characteristics ---------------------------------------------------------- 3-4
I-2-Inventory ----------------------------------------------------------------------------- 5
I-3-Location of items-------------------------------------------------------------------- 6-7
I-4-Handling ------------------------------------------------------------------------------ 8-9
I-5-Location of accessories------------------------------------------------------------- 10–11
ÖII - BUOYANCY CHAMBER
II-1-Setting up the buoyancy chamber – Main steps----------------------------- 12
II-2-Inflation system--------------------------------------------------------------------- 13-14
II-3-Pressure ------------------------------------------------------------------------------ 15
ÖIII – PROPULSION SYSTEM 16

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DESCRIPTION - Technical characteristics
I-1-TECHNICAL CHARACTERISTICS
Dimensions
(m) 4.20
(ft) 13’ 9“
(m) 2.90
(ft) 9’6’’
(m) 1.90
(ft) 6’ 3"
(m) 0.95
(ft) 3’ 1"
(m) 0.455
(ft) 1’ 6"
Design category
(Directive 94/25/EC) C
Capacity
(ISO) 7
Maximum Kg (1) 780
lb.(1) 1720
Kg (2) 181
lb.(2) 399
Compartment
3
Engine configuration
Minimum power
recommended HP (3) 15
KW (3) 11
Maximum power
recommended HP 40
kW 30
Maximum power
allowed HP (3) 50
kW (3) 37
Maximum
Maximum engine
weight
Kg 115
Lbs 254
Overall dimensions
aa (4) 3.63 m
11’11”
b
c
b (4) 1.24 m
4’
c (4) 0.69 m
2’3’’
Len
g
th
Maximum
Maximum

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DESCRIPTION - Technical characteristics
NOTE
Dimension tolerance: +/- 4 %
NOTE
(1) The maximum payload has been calculated according to ISO 6185
standards. Operating at or near maximum payload is only advised in
calm water and at reduced speeds.
(2)Weight shown not including accessories
(3) The recommended power corresponds to optimum operation of the
boat's capabilities for an average load (4 people.) The minimum power is
exploitable in relaxed activities, such as fishing, while the maximum
recommended power is destined for performance activities such as
water-skiing.
(4)Hull dimensions without buoyancy chamber.
Use the maximum authorized power with extreme caution (see "Sailing
advice" chapter of Volume 1 of the manual.)
WARNING
THE MAXIMUM LOAD INDICATED ON YOUR DOCUMENTS
MUST NOT BE EXCEEDED, WHEN THE ENGINE, FUEL,
ACCESSORIES, PASSENGERS, THEIR KIT AND ANY OTHER
LOAD HAS BEEN ADDED.

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DESCRIPTION - Inventory
I-2-INVENTORY
HULL
•Polyester hull
•Non-slip deck
•1 Bow ring
•1 Anchor locker
•2 traction chain plates
•1 Hull drain hole
•1 high flow rate self-bailers with stern well
•1 self-bailer plug BUOYANCY CHAMBER
•Removable buoyancy chamber
•Easy push valves
•Anti-chafing band with wide profile
•4 Exterior handles
•Water shield
•Rails + lashing
•Short cones
•Bow roller
OPTIONAL ACCESSORIES
•Anchoring tarpaulin
•Roll bar
•Console
•Seat
•Side ladder
•Deck pump

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DESCRIPTION – Location of items
I-3-LOCATION OF ITEMS
1
2
3
4
5
6

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ITEM
REF. DESIGNATION
1 Buoyancy chamber
2 Anchor locker
3 Bow ring
4 Towing chain plates
5 High flow rate self-bailer
6 Hull drain hole
7 Handle
8 Lashing
9 Valve
10 Bow roller
11 Bollard
12 Self-bailer plug
87 9 8 7 10
7 12 8 9 8 7911

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DESCRIPTION - Handling
I-4-HANDLING
I-4-1-Transporting
yThe trailer installation recommendations are specified in VOLUME I of the owner's manual.
I-4-2-Storage
WARNING
THE BOAT MUST REST ON THE BOW LINE (SEE SKETCH
BELOW).
SECTION I-I SECTION J-J

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I-4-3-Lifting rings (not supplied)
- The PRO 420 has a reinforced area under the forward cover for securing the hoisting rings.
ITEM REF.
D
IMENSIONS
(mm)
A 185
B 163
C 159
- The aft transom chain plates can also be turned over inboard.
Reinforced area for
drilling

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DESCRIPTION – Location of accessories
I-5-LOCATION OF ACCESSORIES
I-5-1-Console / Seat (OPTION)
Your boat can accept certain optional accessories (console / seat). Position them in the
locations indicated below to optimise use of the boat.
The positioning dimensions are taken from the aft transom (distances in millimetres).
I-5-2-Bilge pump (OPTION)
Bilge pump placed at the
bottom of the aft well DB420
Intersection
between aft
transom and flat
deck
Position
defined in
the
installation
manual
Console
Seat
or
bolste
r

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I-5-3-Engine plate (to be fitted with 5 plate screws FZ 4.2x25)
ITEM REF. DIMENSIONS
(mm)
A 147
B 35
C 50
D 15
E 294
F 3.5

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BUOYANCY CHAMBER – Main steps
II-1-SETTING UP THE BUOYANCY CHAMBER – MAIN STEPS
When assembling the boat, it is important that you follow the procedure in the correct order. Proceed
step by step, referring each time to the pages indicated for explanations.
INFLATION PROCEDURE PAGE SECTION
1. Make an inventory of all your boat’s components and
learn to recognize them 5 - 6 Inventory
Location
2. Start inflating the boat using working pressure. 9 & 10 Inflating the boat
11 & 12 Air pressure
II-2-INFLATION SYSTEM
THE INFLATION PUMP
a. adaptor
b. tube nozzle
c. tube connector
d. inflation port
a
b
cd
SEMI FLUSH-MOUNTED VALVES
To activate the valves In inflating position In deflating position
Push The membrane is closed, the
knob is up The membrane is open, the knob is down
NOTE:
The caps of the easy-push valves are designed to
screw and unscrew in a ¼ turn. Never force the
caps, as you will run the risk of unscrewing the
whole deflation system.

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BUOYANCY CHAMBER – Inflation system
PRESSURE INDICATOR (Screw it in using a ¼ turn replacing the valve cap)
zone verte
pression optimale
zone orange
zone rouge
sousgonflement
zone orange
zone rouge
surgonflemen
t
Atmospheric pressure Pressure too low
INFLATE Correct pressure Pressure too high DEFLATE
BOAT INFLATION
Activate all valves in the inflation position.
Attach the hose connector to the inflator inflation
port.
To inflate your boat properly, the inflator should
be correctly placed on the ground.
The boat inflates rapidly if the inflator is used
smoothly and without haste.
WARNING
DO NOT USE A COMPRESSOR OR COMPRESSED AIR CYLINDER.
Green zone
Optimal pressure
Orange zoneOrange zone
Red zone
Underpressure Red zone Overpressure

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BUOYANCY CHAMBER - Pressure
INFLATING THE BUOYANCY CHAMBER
•Place the adapter corresponding to the diameter of the semi built-in valve at the inflator hose
nozzle.
Inflate the buoyancy mechanism, balancing the pressure between the different compartments until
the partitions (a) are no longer visible (pressure = 240 mb)
NEVER PUT A
COMPARTMENT
UNDER PRESSURE
WHILE THE OTHERS
ARE STILL FULLY
DEFLATED.
a
100 % 0 % 0 %
1 50 % 50 % 50 %
2 100 % 100 % 100 %
Inflating is complete: Screw on the inflating valve caps.
NOTE: A slight loss of air is normal before the cap is screwed on.
Only the caps guarantee final air tightness.
II-3-PRESSURE
The correct pressure for the buoyancy chamber is 240 mb/ 3.4 PSI (middle of the green sector of
the pressure gauge).
Your boat is fitted with an ACCESS pressure indicator which provides a quick, efficient readout
during inflation (see explanations for use in the "Inflation system" section).
The temperature of the surrounding air or
water will proportionally influence the level
of internal pressure in the buoyancy
chamber
Ambient temperature buoyancy chamber internal
pressure
+1°C +4 mb / 0.06 PSI
-1°C -4 mb / 0.06 PSI
Thus, it is important to anticipate:
Check and adjust the pressure of the inflatable compartments (inflating or deflating according
to the case) according to the temperature variations (especially when there is a considerable
difference in temperature between morning and evening in particularly hot areas) and make
sure that the pressure remains within the recommended pressure range (from 220 to 270 mb /
green sector).

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BUOYANCY CHAMBER - Pressure
RISK OF PRESSURE LOSS:
EXAMPLE: Your boat is exposed to direct sunlight on the beach (temperature=50°C) at the
recommended pressure (240 mb/3.4 PSI). When you launch it (temperature=20°C), the temperature
and internal pressure of the inflatable compartments will drop simultaneously (up to 120 mb) and
YOU WILL THEN NEED TO REINFLATE until you regain the millibars lost due to the difference
between the ambient air and water temperatures. A drop in pressure at the end of the day, when the
outside temperature is dropping, is normal.
RISK OF OVERPRESSURE:
EXAMPLE: Your boat is inflated to its recommended pressure (240 mb/3.4 PSI) at the
beginning or end of the day (low outside temperature = 10°C). Later in the day, your boat is exposed
in the sun on the beach or on a yacht deck (temperature = 50°C). The temperature inside the inflatable
compartments may rise to 70°C (particularly for dark buoyancy chambers), doubling the initial
pressure (480 mb). YOU WILL THEN NEED TO DEFLATE the boat to return to the
recommended pressure.
WARNING
IF YOUR BOAT IS OVERINFLATED, THERE WILL BE UNDUE
PRESSURE ON THE INFLATABLE STRUCTURE THAT MAY
RUPTURE IT.
IN CASE OF OVERPRESSURE
EASY PUSH VALVE:
Release air by depressing the
valve plunger

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PROPULSION SYSTEM
Complies with Z Marine's recommendations and with the engine
manufacturer's recommendations.
For optimum use of your boat, seek advice from your dealer.