Hubbell MSH - Manual (Page 3)

3
Model MSH & MH
Shipboard Electric
Water Heater
Mode MSH/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, certified, and registered with the National Board
of Boiler and Pressure Vessel Inspectors.
2 . All internal tank surfaces are lined with a minimum of 5/8"
thick Hydrastone cement for superior protection and tank
longevity.
3 . Designed for 100psi working pressure and hydrostatically
tested at 150psi (1 1/2 times the WP).
General
1 . Heavy duty 2" thick fiberglass blanket insulation covers
the pressure vessel for maximum operating efficiency and
minimal standby heat loss.
2 . Heavy gauge galvanized steel protective jacket holds
insulation in place and protected to ensure highly efficient
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 five (5) year Non Pro-Rated tank warranty and one (1)
year electrical component warranty.
6 . Bronze ASME/CSA rated combination temperature and
pressure safety relief valve set at the vessel working
pressure and 210ºF.
7 . ABS approved and in conformance with USCG
regulations.
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 definite purpose magnetic contactor with
integrally mounted power fuse block assembly switches
power on/off to each branch circuit.
5 . Heavy duty removable flange 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).
Model MSH/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
General
1 . Skid mounting on heavy duty all welded I Beam
2 . Type 304 stainless steel protective jacket,
please specify if painted.
3. Dual energy package provides operational flexibility
for electric and (steam or boiler water) power.
See page 8 for details.
Electrical
1 . NEMA 4 watertight 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/Off 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
insufficient water in the tank.
7 . Dial thermometer and pressure gauge factory installed in
the tank.
8 . Intra-tank circulation pump package with On/Off switch to
continuously circulate water within the tank and thereby
reduce stratification. All bronze circulator pump is rated
1/12 HP, 120V, 1 Ph.
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