Hubbell Electric Heater MSH User Manual

Marine Products Division

Model MSH & MH

Shipboard Electric
Water Heater

80-5000 Gallon Capacity
15-1600 KW — All Voltages & Phases

The MSH is a storage
packaged water heater for
marine use.

Reliable

■

Only high grade materials

used in construction to
ensure long operating life

■

Hydrastone cement
lining provides superior
protection and tank
longevity

■

Heavy duty construction
withstands demanding
marine use

Marine Approvals

■

United States Coast Guard

(USCG) conformance
and Type Approved by
American Bureau of
Shipping (ABS)

■

USCG conformance
and ABS Type Approval
eliminates costly delays
and uncertainties during
ship inspection

Mounting Systems

■

Heavy-duty legs secure

the tank to deck

■

Side-sway bulkhead
attachment points provide
added mounting stability

■

The entire mounting
system is integrally welded
to tank for maximum
stability and safety

Packaged System

■

Fully packaged water

heater saves time and
money during installation

■

All electrical operating
controls are factory
selected and wired to
ensure reliable operation

■

Full range of styles, sizes,
and optional features to
meet your exact water
heating needs

A Heavy Duty Storage Electric Water
Heater For Marine Use

The Hubbell Model MSH and MH water heater is specically

designed for marine use on board a surface vessel or platform
and is in USCG conformance and is ABS Type Approved. By
utilizing deck and bulkhead mounting supports, the water
heater is securely fastened to the ship structure, thus providing
a secure and reliable water heater installation. The heavy-duty
carbon steel storage tank is lined with specially formulated
hydrastone cement that provides superior protection, tank
longevity and withstands demanding marine use.

When you specify and install a Hubbell model MSH or MH,
knowing that it is in conformance with USCG regulations and

is ABS Type Approved, you will have condence that the ship

owner will be provided with a quality product that is a long
lasting and trouble free source for hot water.

ISO 9001:2008

The Electric Heater Company

P.O. Box 288 ■ Stratford, CT 06615-0288

Phone: [phone]

E-mail: [e-mail]

ISO

■

FAX: [phone]

■

www.hubbellheaters.com

Cement Lined Tanks
Provide Longer
Service Life

NO

NO

GLASS

GLASS

LINING

LINING

What is the most common reason
why a water heater fails?

Failure of a tank’s protective lining allows
water to come into direct contact with the
steel tank causing it to corrode and leak.

Therefore, the type of protective lining is
the single most important feature when
determining the quality of any water heater.
The ability of a lining to protect the steel tank
is primarily based upon its thickness and
complete coverage of all steel surfaces.

Tank Cross Section

5

/8"

Hydrastone

Cement

Lining

Steel

Pressure

Vessel

Linings Available For A Steel Tank

Cement Lining

A specially formulated Hydrastone cement
applied to a minimum of
surfaces. The cement lining covers 100% of
all interior surfaces and is 125 times thicker
than glass lining. Due to the thickness and
guaranteed coverage of cement lining there is

no need for a sacricial anode. An extremely

durable and long lasting lining suitable for
hot and cold potable water storage in marine
applications.

5

/8" thickness on all

Phenolic Lining

An epoxy coating applied in 2 coats to a total
of 10-12 mils DFT. Typically used in process
applications using low conductivity D
or food grade water.

I, distilled

Non-Ferrous Tanks

A solid Non-Ferrous tank does not require a lining because the pressure vessel itself is

constructed from material which is impervious to the corrosive eects of hot water. This type of tank
will provide a signicantly longer service life than all lined steel tanks, but is initially more costly.

90/10 Copper-Nickel

A 90% Copper 10% Nickel alloy provides
excellent strength and corrosion resistance.
Typically used in applications with corrosive
environments (salt water) or in critical marine
applications requiring long tank life.

Stainless Steel

Stainless Steel (Specify: Type 304, 316, or
316L) is suited for applications requiring a
corrosion resistant tank with minimal leaching
of impurities into the water. Well suited for
process, RO and D

I water systems.

Note: Unlined non-ferrous tanks do not require a manway. Inspection openings will be provided as required.

2

2

Model MSH & MH

Shipboard Electric
Water Heater

Model MSH and MH
Standard Equipment

Vessel Construction

1. All welded carbon steel vessel designed and built in

strict accordance with the ASME Code Section IV and

stamped, certied and registered with the National Board

of Boiler and Pressure Vessel Inspectors.

2. All internal tank surfaces are lined with a minimum of

thick Hydrastone cement for superior protection and tank
longevity.

3. Designed for 100 psi working pressure and hydrostatically

tested at 150 psi (1 1/2 times the WP).

General

1. Heavy duty 2" thick berglass blanket insulation covers

the pressure vessel for maximum operating eciency and

minimal standby heat loss.

2. Heavy gauge galvanized steel protective jacket holds

insulation in place and protected to ensure highly ecient

operation.

3. Integrally welded bulkhead attachment points.

4. Entire vessel is supported on heavy duty integrally welded

steel supports for sturdy deck mounting.

5. Full ve (5) year Non Pro-Rated tank warranty and one (1)

year electrical component warranty.

6. Bronze ASME rated combination temperature and

pressure safety relief valve set at the vessel working
pressure and 210ºF.

7. ABS Type Approved and in conformance with USCG

regulations.

5

/8"

Model MSH and MH
Optional Equipment

Vessel

1A. Alternate protective lining:

Phenolic epoxy resin.

1B. Alternate vessel construction:

Stainless Steel (Please specify Type: 304, 316 or 316L)
90/10 Copper-Nickel, other.

1C. Alternate working pressure:

Please specify

1D. Alternate tank design:

ASME stamped to Section I or VIII

General

1. Skid mounting on heavy duty all welded I Beam

2. Type 304 stainless steel protective jacket,

please specify if painted.

. Dual energy package provides operational exibility

3

for electric and steam or boiler

See page 8 for details.

. Manway 12" x 16" size

4

. Inspection opening 3" NPT

5

. Specic third party approval including BV, NR-13,

6

Lloyds or MIL spec.

water power.

Electrical Operating Controls

1. All electrical operating controls are factory sized,

selected, wired, tested, and mounted in a NEMA 1
enclosure to ensure safe and reliable operation.

2. A power distribution block is supplied for single point

electrical installation.

3. Power fuses rated at a maximum of 60 Amps protect

each heating element branch circuit per NEC and UL
requirements. Each branch circuit has a maximum rating
of 48 Amps.

4. Heavy duty denite purpose magnetic contactor with

integrally mounted power fuse block assembly switches

power on/o to each branch circuit.

5. Heavy duty removable ange type immersion heating

element provides long service life.

6. Fully adjustable thermostat maintains accurate water

temperature and is sized by the factory to control the
appropriate number of heating element circuits.

7. A generously sized transformer provides fused 120V to

the control circuit

8. A fully adjustable (100-240 ºF) safety hi-limit device with

manual reset interrupts power to the control circuit in the
event of over-temperature water in the storage tank.

9. Safety door interlock mechanism interrupts power to the

control circuit upon opening the electrical control panel.

10. Louvers in the control panel allow for cooling of the

electrical components to ensure maximum electrical
component longevity (when required).

Electrical

1. NEMA 4 weather resistant enclosure for outdoor/wet

locations.

2. Explosion resistant enclosure for hazardous locations.

Please specify class, division, and group.

3. Built-in circuit breaker (with or without shunt trip) or a

built-in non-fused On/O disconnect switch.

4. Alternate element sheath material (Please specify:

Incoloy, Stainless Steel, other).

5. Specialized heating element construction including:

Special watt density rating, passivation, electropolishing,
hermetic seals or any other feature required to meet the
needs of your application.

6. Factory installed low water cut out device to disengage

electrically the heating element(s) in the event of

insucient water in the tank.

7. Dial thermometer and pressure gauge factory installed in

the tank.

8. Intra-tank circulation pump package with On/O switch to

continuously circulate water within the tank and thereby

reduce stratication.

9. Status indicating lamp(s).

10. Audible alarm system.

11. Digital display electronic temperature controller. Please

specify with or without RS485 communication port for
remote operation of the temperature controller.

12. Additional ground connections

3

Marine Products Division

Outline Dimensions

Model MSH (vertical)

Storage Tank

Protective Jacket

Hot Water Outlet

o

45

6" 6"

T&P Relief Valve

Mounting Hole

4 Places Equally

Spaced 90° Apart.

Tanks 26" diameter

and smaller 4" x 4" x

1

/4" Base Pads with 5/8"

mounting hole

Tanks 30" - 42" dia.

5” x 5” x 1/4" Base Pads

with9/16" mounting hole.

Tanks 48" diameter

and larger 6" x 6" x 1/4"

Base Pads with 9/16"

mounting hole.

Protective Jacket

Pressure Vessel

Insulation

Electric Control Panel

12" x 16" Manway

(when required)

Electric Heating

Element

10"

G

Base View

F

1 1/2"

Lifting

Lug

Hot Water

Outlet

Top View

Lifting

T&P Relief

Lug

Valve

3 1/4"

4"

B

Cement

Lining

7/8"

Bulkhead

Mounting Holes

2 Places

Tank Cross

Section

Hydrastone

5

/8"

Steel

Pressure

Vessel

Model MH (horizontal)

Electric Control

Electric Heating

Supports (Specify
Saddles Or Skids)

4

Panel

Element

D

Front View

Withdrawal

Space

6"

Combination Cold

Water Inlet And Drain

Side View Front View

4"

E

10"

Withdrawal

Space

Cold

Water

Inlet

Lifting
Lugs

T&P Relief
Valve

Side View

(Note: optional skid base shown)

A

C

Hot Water

Outlet

Pressure
Vessel

Insulation

Protective
Jacket

12" x 16"
Manyway
(when required)

Drain