Whale S360EW Installation And Operation Manual

INSTALLATION AND OPERATION MANUAL

Whale® 12 V Water Heater

SYSTEM REQUIREMENTS:

Minimum of a 100HP engine with at least a 30A residual current at cruising speed within a dual
battery system

or

A dedicated 12 V battery source with 30A available

PLEASE NOTE: When connected to your boat 12 V system, care must be taken to ensure the heater is only
operational at cruising speed. The heater must be switched off when the vessel is idling, this will prevent battery

power drainage.

Model Number Description

S360EW

12V Electric Water Heater

INSTALLATION AND OPERATION MANUAL

Whale® 12 V Water Heater

Thank you for purchasing this Whale® product. For over 30 years, Seaward Products has manufactured high quality water
heating, cooking and gas supply products. The company has now been taken over by Whale

®, who has led the way in

the design and manufacture of water systems including freshwater, bilge, gray and black waste management, faucets,
showers, plumbing and accessories in the marine and RV industries for the past 60 years. Whale® products are built on a
reputation for quality, reliability and innovation backed up by excellent customer service. For more information please visit

www.whalepumps.com

*Note, ABYC Test requirements 125 psi, H-23

1. SPECIFICATION 9. INSTRUCTIONS FOR USE

2. CONTENTS AND DIAGRAMS 10. MAINTENANCE

3. PRINCIPLES OF OPERATION 11. WINTERIZING

4. TO THE USER 12. TROUBLE SHOOTING

5. TO THE FITTER 13. SERVICE SUPPORT DETAILS

6. APPLICATION 14. PATENTS/ TRADEMARKS

7. WARNINGS 15. WARRANTY STATEMENT

8. INSTALLATION 16. EU DECLARATION OF CONFORMITY

LIST OF DIAGRAMS:

1. Mounting the Water Heater 3. Grounding Instructions 5. Typical Installation 7. Internal Wiring

2. Inlet and Outlet Ports 4. Wiring Diagram 6. Replacing the Anode

The Whale

® 12 V Water Heater is designed for use on outboard boats to provide hot water on the go. It requires a 12 V

d.c. power supply to heat water to 1400F in less than 80 minutes and has integrated safety features including temperature
and pressure valves, thermal cutout and heating indication output.

Read the following carefully before installation and use.

WARNING: Please note that incorrect installation may invalidate the warranty.
Check that the product is suitable for the intended application, follow these installation instructions and ensure all relevant
personnel read the points listed below. Also ensure that these operating instructions are passed on to the end user.

This Whale

® 12 V Water Heater is designed for use in recreational marine vessels with a suitable power output operating

on 12 V d.c. electrical supply only. If it is intended for any other purpose, it is the user's responsibility to ensure that the
heater is suitable for the intended use. Whale® heaters are not suitable for domestic applications.

2

INSTALLATION & USER INSTRUCTIONS

ENG

1. SPECIFICATION

Product Code S360EW

Description 12 V Electric Water Heater

Capacity 3 US Gals (12 ltrs)
Electrical Supply 12 V d.c. , 300W
Recommended Fuse Size 35 Amps
Current Draw 30 Amps

Maximum Water Temperature

1400 F (600 C)

Temperature and Pressure Valve Specification

2100F (990C), 75 psi (5.2 bar)

Maximum Tested Pressure 300psi (20.7 bar)*

Dimensions (wxdxh) 13 ½ ” x 14 ½ ” x 13 ¼ ” (343mm x 369mm x 337mm)

Materials

Tank - ALCLAD

Casing - White Powder Coated Aluminium

Connections

½” NPT Female

For connection to 15mm Quick Connect use WX1514

Weight 11lbs (5kg)

2. LIST OF CONTENTS AND LIST OF DIAGRAMS

3. PRINCIPLES OF OPERATION

4. TO THE USER

5. TO THE FITTER

6. APPLICATION

3

Please note: When using electrical appliances, basic safety precautions must be followed to reduce the risk
of fire, electrical shock, or injury.

This Whale® Heater must be installed by a qualified marine electrician.

CAUTION

Hydrogen Gas

• Hydrogen Gas can be produced in a hot water system that has not been used for a long period of time

(generally 2 weeks or more). Hydrogen gas is extremely flammable.

• To reduce the risk of injury under these conditions, prior to using electrical appliances, the user must ensure

that the hot water faucets in the galley are opened for several minutes until there is a smooth water flow. If
hydrogen is present, there will be an unusual sound similar to air escaping through the pipe as the water begins
to flow.

• Run the faucet for several minutes until there is a smooth water flow to release all the gas.

• WARNING - Do not smoke or have any open flame near the faucet when checking for hydrogen.

Galvanic Corrosion

• To help prevent possible damage due to electrolysis, installing a galvanic isolator is recommended.

• Galvanic corrosion is not covered under warranty.

Corrosion

• Corrosion may occur in your Water Heater due to high current or in areas of hard water with a higher
concentration of dissolved salts.

• This Water Heater is therefore supplied with a sacrificial anode to prevent rapid corrosion.

• Anode rods preserve the life of a Water Heater by corroding themselves instead of the heater.

• These anode rods are easy to replace and must be checked for corrosion every 6 months. Please see
Maintenance (Section 10) for more information.

• Please note - Zinc anodes do not prevent corrosion, magnesium anodes are recommended.

Warnings - Please read prior to installation

1. Read all instructions prior to installation and use.

2. This Water Heater must be connected to a properly grounded source for aluminium boats (see Section 8 iv).

3. WARNING This Water Heater is powered by 12 V d.c. and can draw up to 30 amps. Turn off power prior to
installation or maintenance to prevent injury or death.

4. Install and locate this Water Heater only in accordance with the provided installation instructions.

5. This Whale

® Water Heater is designed for use in a marine vessel only to provide hot water. If it is intended for

any other purpose, it is the user's responsibility to ensure that the heater is suitable for the intended use.

6. The water temperature cannot be adjusted. It is automatically set to approximately 1400 F / 600 C to prevent
bacteria growth.

7. To avoid scalding, the temperature of the hot water supplied to faucets and showers must be controlled via a
thermostatic mixer valve or similar as per ABYC H-23 standards (see section 8 vii.).

8. Do not use water from the Water Heater as drinking water.

9. Close adult supervision is necessary when this heater is being used by children or vulnerable adults.

10. Do not operate this Water Heater if the power supply line is damaged, if the heater is not working properly, or if
it has been damaged or dropped.

11. Do not flush caustic chemicals through your system as this will cause damage to your heater. Damage that
occurs to the heater due to caustic chemicals is not covered under warranty.

12. WARNING: Fire hazard. Wiring must comply with applicable electrical standards and include a properly sized
fuse or circuit breaker. Improper wiring can cause a fire resulting in injury or death. Switch off the power while
making connections. Suggested wiring information is given as guidance only. For full information, refer to the
USCG, ABYC and ISO regulations for marine applications and wiring gauges, connectors and fuse protection.

Contact Whale® Support team for further technical advice

USA: [phone] or email: [e-mail]

ROW: [phone] or email [e-mail]

NOTE: Incorrect installation will invalidate warranty and could make the Water Heater unsafe for use. Ensure your
heater is properly installed and grounded by a qualified marine electrician.

8.i Preparation

• Always disconnect power sources before installing.

7. WARNINGS

8. INSTALLATION

4

8.ii Location

• Locate the Water Heater as close to the power supply as possible.

• Locate the heater in a dry location away from the bilge area and standing water.

• Do not install the Water Heater on its side or upside down.

8.iii Mounting Instructions

• Mount this product on a flat, horizontal surface only.

Step 1 Secure mounting brackets to structure with eight #12 minimum screws or ¼” (6.3mm) screws and nuts (See

figure 1.). The minimum mounting surface depth is ½” (12.5mm).

Step 2 Connect the cold water supply and hot water outlet to heater (see figure 2) using ½” N.P.T. fittings or

WX1514 / WX1524B for a Whale

® Quick Connect system.

NOTE: Whale

® recommends the use of a metal Braided Hose Connector on the hot outlet for connection to standard

flexible pipework.

Step 3 The Temperature and Pressure Relief Valve (provided with tubing) must be oriented so that discharge can exit

no more than 6” (152.3mm) above, or at any distance below the structural floor. This must not be in contact

with any live electrical part.

The Temperature and Pressure Relief Valve is factory installed. The pressure relief limits the pressure to 75 psi
(5 bar) +/- 10% and the temperature to 210ºF / 99ºC +/- 10%. For replacement parts see Maintenance
(Section 10) or contact Whale

® Support.

8.iv Grounding Instructions - Aluminium Boats

NOTE For aluminium boats the earth of the water heater must

be connected to a separate sacrificial anode or galvonic

isolator.

NOTE Do not connect the earth wire to the negative of the 12 V

circuit.

Step 1 Remove the electrical access panel to gain access to the

earth tab. This is located at the top of the internal panel
and labelled with the earth symbol (see figure 3).

Earth Symbol:

Step 2 The separate ground / bonding strip must be connected

to the water heater using the supplied green and yellow
wire. The connection is made to the internal earth tab
using the bolt and nut supplied.

NOTE: Do not place a switch in the grounding circuit.

Figure 1 - Mounting the Water Heater

Cold Water Inlet

Hot Water
Outlet

Figure 2 - Hot and Cold Ports

Temperature
and Pressure
Valve

Figure 3 ­Grounding
Instructions

8.v Electrical Wiring

• WARNING: Fire hazard. Wiring must comply with applicable electrical standards and include a properly sized

circuit breaker. Improper wiring can cause a fire resulting in injury or death.

• Switch off the power prior to making connections.

• Suggested wiring information is given as a guide only. For full information, refer to USCG, ABYC and ISO
regulations for marine applications and wiring gauges, connectors and circuit protection.

NOTE: Electrical wiring must comply with the wiring diagram (Figure 4). The switch must be connected to the 12 V

ignition switch in the engine run position to ensure the heater is only operational when the engine is
running.

Care must be taken to ensure the heater is only operational at cruising speed. The heater must be switched off
when the vessel is idling, this will prevent battery power drainage.

NOTE: On 12 volt circuits a 35 amp circuit breaker must be used.

NOTE: For a dual battery system, Whale

® recommends the use of a Battery Management System.

8.vi Fitting The Circuit Breaker

The purpose of this circuit breaker is to protect the appliance from serious damage, therefore please ensure a 35 Amp
circuit breaker is installed between the water heater and auxiliary battery prior to use. This will protect the system from
damage.

If the breaker blows:
a) Check for reverse polarity connection.
b) Check the breaker in the system is correct for the model.
c) Check there have been no power surges.
d) Check all electrical connections.

8.vii. Thermostatic Mixer Valve

NOTE: A Thermostatic Mixer Valve must be installed as a

temperature control device to prevent risk of injury. This is as
per ABYC H-23 standards.

• The Thermostatic Mixer Valve can be installed either
on each outlet or as a central control in a hot water
system. (See figure 5).

• Whale

® recommends the use of the Whale®

Thermostatic Mixer Valve - WX1599B.

5

Figure 4 - Wiring Diagram for
Dedicated Battery Installation

Figure 5 - Typical Hot Water System

6

Before using this Water Heater please read the instructions for use:

• Do not operate heater unless it is completely full of water. If heater has been operated without water and fails to
work, follow the switch reset instructions in Section 9.ii.

• The 12 V d.c. Water Heater can only be operated when the engine(s) are running at cruising speed to ensure
batteries remain fully charged. Alternatively the Water Heater can be connected to a dedicated 12 V battery.

• If the boat is connected to the dockside water system, ensure that the system is turned off at the dock when not
attended. Also ensure that a pressure regulator is fitted to the vessel.

• Heat up times are dependant on your installation and other variable factors including initial temperature of the
water, power available and ambient temperatures.

• The water temperature cannot be adjusted. It is automatically set to approximately 1400 F / 600 C to prevent
bacteria growth.

• To avoid scalding, the temperature of hot water supplied to faucets and showers must be controlled via a
thermostatic mixer valve as per ABYC H-23 standards (See section 8.vii).

• Do not use water from the Water Heater as drinking water.

9.i Instructions for Use

1. Fill the water system and completely fill the Water Heater tank according to boat or pump manufacturer’s
instruction, purging all pipes and outlets. NOTE - Depending on the boat system size, it may take time to fill and
deliver a smooth flow of water from hot and cold outlets.

NOTE This water heater is not designed to run dry. Running the heater dry will result in damage to the system.

2. Locate and switch ‘ON’ the remote electrical switch for your water heater, if a running light is installed this will
illuminate.

3. Typical heat up times for this Water Heater are as follows:

4. The running light will remain lit until the water has reached 140ºF / 60ºC, then cycle on and off as the
temperature is maintained. Once switched off, the Water Heater will retain usable hot water for up to 10 hours.

NOTE If the running light cuts out within the first 30 minutes of operation, turn off the Water Heater and refer to

Reset Instructions (Section 9.ii).

5. Switch the remote electrical switch ‘OFF’ prior to turning off engines and ensure it remains off when you restart
the engine.

6. The Temperature and Pressure Valve may weep during initial operation - this is normal and the valve will seal
itself with use.

9.ii Reset Instructions

If the Water Heater has accidently been operated without water and fails to work, the Water Heater is equipped with a
high limit switch which can be manually reset. If the limit switch activates, proceed as follows:

• Turn power off at main power panel and remote switch.

• Ensure that the Water Heater is filled with water by filling the fresh water tank and running a hot tap until

a smooth flow is achieved.

• Remove wiring access cover and fibrous dielectric paper.

• Depress red button on high temperature limit switch.

• Replace cover and turn power on.

• If temperature limit switch reactivates, contact Whale

® Support (section 13).

This Whale

® Water Heater is designed to only require minimal maintenance.

WARNING: Before servicing, turn off all power and drain the system.
Note Do not repair or replace any part of the Water Heater unless specifically recommended in the installation manual.

For technical support contact Whale

® Support (section 13).

Annual Checks

• Whale

® advise an annual boat electrical system check that must be completed by an marine electrician.

Optimal Performance

• Ensure this product is regularly cleaned to ensure consistent performance.

• To clean and sterilise the inside of the Water Heater, use diluted sterilising fluid and fully rinse through with
clean fresh water afterwards.

• The outside of the appliance should not require cleaning. If it does, turn off all electrical supply at breaker and
wipe down with a damp cloth only. Allow the Heater to fully dry prior to reconnecting the electrical supply.

NOTE Do not use abrasive cleaners on any Whale® Water Heater

• If de-scaling is required, this can be done using a de-scaling solution. Fully flush out the Water Heater after
de-scaling.

9. INSTRUCTIONS FOR USE

Heat Up Time

1400 F / 600 C

80 minutes

1040 F / 400 C

41 minutes

10. MAINTENANCE

7

Replacing the Anode

The Whale® replacement anode is Part # 75873.

• Drain tank fully and turn off power.

• To replace the anode, remove the drain
valve and the pre-installed sacrificial anode
(figure 6) and screw the new anode and
drain valve back in its place.

• Whale

® recommends checking the anode

regularly for signs of corrosion. If you have
any concerns about rapid corrosion, please
contact Whale® Support (Section 13).

The following service items are available for this Water Heater
from Whale

® (Figure 7).

Heating Element #75876 Relay #75878
High Heat Limit Switch #74607 Temperature and Pressure Valve #74659
Magnesium Anode #75873 Thermostat #73129

NOTE: Figure 7 depicts the internal

wiring of this Water Heater. For
advice on servicing any of
the highlighted components
please contact Whale

® Support

(Section 13) or a marine
electrician.

Note - If water is allowed to freeze in the system, serious damage to the pipe work and pump may occur. Failures of this

type will invalidate warranty. To best avoid this damage, completely drain the water system.

WARNING - The power source must be turned off before draining and refilling this Water Heater.

1. Drain the complete freshwater system either using the pump or a drain valve.

2. Open all the faucets (including the Water Heater drain valve) and allow pump to purge the water from the
system, and then turn the pump off.

3. Disconnect the pump and turn on to purge into an adequate basin. Only reconnect the pump when water system
is to be used.

4. Remember to leave all faucets including the Water Heater drain valve open to avoid any damage (except for
Whale Twist™ Deck Shower if installed).

Anode for use with
drain valve port
#75873

Hot water
outlet

Drain Valve
fitted to anode

Temperature
and
Pressure
valve

Cold water
inlet

Figure 6 - Replacing the anode

11. WINTERIZING

Figure 7 - Internal Wiring

8

For installation or service advice please contact Whale® Customer Support:

UK Tel: [phone] USA Tel: [phone]
UK Fax: [phone] USA Fax: [phone]
UK Email: [e-mail] Email USA: [e-mail]

Whale® is a registered trademark of Munster Simms Engineering limited (also trading as Whale® and Whale Seaward
Inc).

13. SERVICE SUPPORT DETAILS

14. PATENTS AND TRADEMARKS

PROBLEM POSSIBLE CAUSES POTENTIAL SOLUTION

No hot water

Cold water inlet valve is incorrectly
orientated (if present)

Ensure check valve is the correct orientation (if present).

No water in the tank Fill the tank with water.

High Limit Switch activated

Press reset and try again. If this has no effect, contact a
local electrician to replace the switch or element.

Faulty element Replace element.
Incorrect wiring Check wiring and contact a marine electrician.

No / insufficient electricity supply

Contact a marine electrician to check the electrical
supply.

Faulty thermostat Replace the thermostat (Section 13).

Heavy calcification

Flush your hot water heater. If this has no affect, replace
the heating element (section 10).

Blocked ports or non return valve Clear the blockage.
Thermomixer valve set too cold Adjust to between 40ºC (104ºF) and 55ºC (131ºF).
Circuit breaker has blown Check and replace if necessary.
No power as water heater is activated

while engine is not running

Recharge batteries and only use the water heater while
the engine is activated.

Circuit breaker tripped due to insufficient
water supply or low power

Fill the water tank fully and only use while engine is
running.

No output from tank Air lock Bleed the system.

High limit Switch
continually trips

Insufficient water in the tank

Check non-return valve is not blocked and fill tank to
capacity.

Wrong breaker amperage

Check fuse rating to ensure correct amperage and
replace if necessary.

Faulty element Replace element.
Heavy calcification in water tank Flush and clean regularly.
Faulty wiring Have a marine electrician check the electric circuit.

Pressure relief Valve
(TMP/TMV) Leaking

Initial use

The T&P valve may leak on initial use until it seals itself.
Open the valve and re-run the system.

Faulty / old valve Replace the valve.

Water Heater left constantly on

Replace valve (due to deposit build-up on valve seat)
and do not leave Water Heater constantly ‘on’.

Tank not winterized Replace valve and winterize tank in future.
Electric thermostatic controls faulty Have a marine electrician check the system.

Leaking tank

Damage to tank due to improper service Replace Water Heater.

Electrolysis due to absent or faulty
galvonic isolator

Replace Water Heater and install galvanic isolator.

No anode fitted to tank Replace Water Heater and fit anode in drain valve fitting
Corrosion or damage due to tank not

winterized properly

Replace Water Heater and ensure it is winterized in
future.

Fittings not correctly attached Check all connections are water-tight.

12. TROUBLESHOOTING

9

This Whale® product is covered by 2 years warranty. For further details please see the enclosed Statement of Limited
Warranty. This product is manufactured by Whale Seaward Inc in the USA.

©Copyright Whale® 2015- All rights reserved.
WHALE®, is a registered trademark of Munster Simms Engineering Limited, Bangor Northern Ireland trading as Whale
Seaward Inc. Whale’s policy is one of continuous improvement and we reserve the right to change specifications
without prior notice. Illustrations are for guidance purposes only.

We hereby declare, under our sole responsibility, that the enclosed equipment is in conformity with the following
relevant EU legislation:

General Product Safety Directive 2001/95/EC
RoHS 2011/65/EU

Basis on which conformity is declared

The above equipment complies with the protection requirements of the stated directive.

Standards applied

ABYC E-11 AC and DC Electrical Systems on Boats (2003)
ABYC H-23 Installations of Potable Water Systems

Signature:

Name: Richard Bovill
Function: Engineering Director
Location: 2 Enterprise Road, Bangor, Northern Ireland, BT19 7TA
Date of Issue: 23rd October 2014

9

16. EU DECLARATION OF CONFORMITY, STANDARDS AND APPROVALS

Munster Simms Engineering Ltd - 2 Enterprise Road, Bangor, Co. Down, N.Ireland, BT19 7TA

Tel: [phone] Email: [e-mail] Web: www.whalepumps.com

Whale Seaward Inc - 91 Manchester Valley Road, Manchester Center, VT, 05255, USA

Tel: [phone] Email: [e-mail] Web: www.whalepumps.com

sh_184.40_v2_0315
Ref: 75874

15. WARRANTY STATEMENT