Volvo Penta Volvo Penta, QL 20, QL 40, QL 60 Owner's Manual
Volvo Penta Quality Line Marine
Water Heaters
Owners Manual
1
Mounting Instructions
If operations are performed incorrectly, this could result
in personal injury, or damage to property or the Water
Heater. Read the Mounting Instruction carefully before
operating or servicing the Water Heater. If anything is
unclear, please contact your Volvo Penta dealer for
assistance.
This symbol is used in the book and on the Water
Heater to make you aware of safety information. Always
read these safety precautions very carefully.
In the Instruction Manual warning texts have the
following priority:
WARNING! If these instructions are not followed,
there is a danger of personal injury, extensive damage to
the product or serious mechanical malfunction.
IMPORTANT! Used to draw your attention to
something that can cause damage, product malfunction
or damage to property.
NOTE! Used to draw your attention to important
information that will facilitate work or operations.
This symbol is used in certain cases on our
products and refers to important information in the
Mounting Instruction. Ensure that warning and information symbols on the product are always visible and
legible. Replace symbols that have been damaged or
painted over.
Congratulations on your choice of a new QL
Water Heater. A choice that will help you bring
out the best in boating pleasure. To give you
the best benefit of the product and to facilitate
your installation, we kindly ask you to follow
the recommendations and instructions below.
The QL Water Heaters are built with materials that
withstand the rigors of the marine environment.
Being an electrical appliance, the Water Heater
should be installed in a ventilated location where it
will not be subjected to humidity and external
water spray. All QL Water Heaters are insulated
with high efficiency, auto extinguishable cellular
polyurethane.
The distance between the engine and the Water
Heater should be as short as possible. Locate the
Water Heater in an accessible position so that the
water connections, pressure relief/non return
valve and electrical heating element (30 cm long)
remain accessible. Install the Water Heater in a
ventilated location in order to prevent sweating
which might be mistaken for water loss.
The Water Heater should be firmly secured with
mounting brackets to a solid structure using bolts,
nuts and lock washers. Bear in mind that the total
weight of the Water Heater is its weight plus all
the water it contains.
The Water Heater can be mounted either horizontally or vertically to bulkhead, deckhead or floor.
The hot water outlet is placed in the far, top end of
the bowl to ensure that the warmest possible water
is used at every time even when vertically mounted.
Before mounting check the information on the
sticker inside the plastic cap. This information is
essential for the correct installation and maintenance of the Water Heater.
IMPORTANT! This product is covered by a
limited warranty. It is restricted to the product
itself and no liability will be assumed for damage
occurred due to negligance of the contents in this
manual.
The drawing of your Water Heater, found on page
6, will help you understand these instructions. To
ensure that your Water Heater functions correctly,
install it as follows:
Fit mounting brackets:
1. To bulkhead: the Water Heater must be
firmly secured to a bulkhead.
2. To deck: the Water Heater must be firmly
secured to the deck. Auxiliary bracing is advisable.
Ensure that Water Heater is mounted as
follows:
1. Secure the mounting bracket’s three anchorage
points with through bolts.
2. Install the Water Heater in the required position (see drawing) taking particular care that
the end marked ‘TOP’ is mounted accordingly.
3. Secure the brackets with the through bolts,
bend the stainless steel straps around the Water
Heater and use the screws and nuts (supplied
with brackets) as screw-stays to clamp down
the Water Heater.
English
2
Fresh water plumbing connection
For a better understanding of these instructions,
please refer to the “plumbing connection diagram”
found at the back of the booklet.
1. Connect water system to the pressure relief/
non return valve and then to the cold water
inlet marked with a blue rubber washer (see
plumbing connection diagram, points 2 and 6).
NOTE! When Water Heater is mounted vertically with its tubes upwards, the entry pipes
should be exchanged with the exit pipes and
vice versa.
2. Ensure that pressure relief valve is mounted
correctly (that the arrow points towards the
blue rubber washer). A gate valve, that cuts off
the Water Heater from the rest of the water
circuit during maintenance operations (see
plumbing connection diagram, point 8), is
recommended. Install the valve between the
accumulator tank and the pressure relief valve.
3. The hot water outlet marked with a red rubber
washer (see plumbing connection diagram,
point 1) should be connected to the hot water
taps with tubes or hoses that can withstand the
circuit’s temperature and pressure
(max. 120° –7 kg cm
2
).
4. An escape valve, useful for maintenance or
drainage operations (see plumbing connection
diagram, point 7) is recommended and should
be mounted between the tube and pipe fitting
connection.
WARNING! When the Water Heater has
been mounted, open hot water taps and allow
the water to run a few minutes (before electrical connection!) in order to expel all air from
the Water Heater and lines thus ensuring that
the heating element is totally submerged,
otherwise it will burn out within a few minutes
when power is turned on.
5. Ensure that all pipe fitting connections are
watertight. Mount a small tube to the safety/
non return valve and ensure that overflow runs
into the bilge or other suitable space where hot
water and steam will not cause any immediate
risk to people on board or damage any other
parts, particularly electrical ones.
NOTE! Ensure that the cold water inlet and hot
water outlet pipework has been connected
correctly (see plumbing connection diagram,
points 1–2) and not the heat exchanger pipes
marked with the engine symbol (see plumbing
connection diagram, points 3–4).
Electrical connection
WARNING! Before removing the black
plastic cap, be sure to turn off the electrical supply.
WARNING! Follow the norms and standards
of the local authorities when carr ying out electrical connections. Ensure that your AC voltage
corresponds to that indicated on the electrical
heating element.
Ensure that a high-sensitivity differential cut out
switch and an insulating transformer is mounted
into the electrical system.
Insert a bipolar switch (10AMP/220V or 15 AMP/
110V) in an accessible location from where the
electric supply of the Water Heater’s electric
heating element can be controlled.
Protect electric line with a 10 AMP/220V or
15AMP/110V fuse. Use only pliant and not rigid
cable, since vibrations might damage the latter.
The cable area should not be less than 2.5 mm².
The electric cables and connections should be
protected from sea spray and dripping. The cable
must not run in the bilge. Support it securely at
frequent intervals. Protect it from the possibility of
accidental contact with mobile parts.
Strip the insulation from the three wires to bare
about 1 cm of the stranded wire. The two wires
conducting electricity (generally blue/brown)
should be fastened to the thermometer’s contact
points marked by numbers 1 and 2. Connect the
earth wire (yellow or green) to the screw nut
contact on the Water Heater tank marked with the
earth symbol.
Adjust the thermostat setting by turning the dial
clockwise with a screwdriver blade until the arrow
points to the desired temperature setting (production setting is to 60°C).
Our thermostats are equipped with a high temperature cut out safety switch, which is an electromechanical device that opens the current circuit
and disconnects the electric heating element if the
thermostat fails. When activated, the pin located
near the temperature regulator dial is released. To
check that the pin has not been released and is set
correctly, check that the pin is lying a few millimeters below the structures edge.
After double-checking that the Water Heater is
filled with water, the power can be turned on (see
the plumbing connection above). Within a few
minutes it should be evident that the Water Heater
is beginning to heat the water.
English
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