Hubbell MSH Water Heater User Manual


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7
Option Note
Anyandalloptionalequipmentforawaterheatermustbecalled
outinthewrittenspecications.Amodelnumberinandofitself
doesnotreectanyoptionalequipmentselected.
Example: MSH250-0-80SLT5
AHubbellmarinewaterheaterwithastoragecapacityof250
gallonsandan80KWelectricheatingelement.Thetankis
cementlined.Powerrequiredis440VAC,3phase,60Hz.
■
Step2
Gallon Capacity:
80-5000U.S.Gallons
■
Step1
Model:
MSH = Vertical
MH = Horizontal
■
Step5
Voltage / Phase / Hz:
RS= 208-1-60
R =208-3-60
S = 240-1-60
T = 240-3-60
W = 277-1-60
T3 = 380-3-50/60
T7 = 415-3-50/60
T5 = 440-3-60
T4 = 480-3-60
T4S= 480-1-60
T6 = 600-3-60
■
Step4
Vessel Type:
SL =Hydrastone
Cementlinedtank
GL = PhenolicLined
Steel
CN = Solid90/10
Copper-Nickel
SS = SolidStainless
Steel(SpecifyType
304or316L)
(Manufacturer reserves the right to change specications without notice.)
Model Number Designation
— —
0
■
Step3
Electric KW:
5-1600KW
Liters x 0.2641 = Gallons
Gallons x 3.79 = Liters
Gallons x 0.003785 = m
3
m
3
x 264.2 = Gallons
1
O
C ∆T = 1.8°F ∆T
O
F = (
O
C x 1.8) + 32
O
C = (
O
F - 32) x 0.556
Watts/Sq.Cm. x 6.4 =
Watts/Sq.In.
Watts/Sq.In. x 0.155 =
Watts/Sq.Cm.
psi x 0.06896 = Bar
Bar x 14.5 = psi
Model MSH & MH Sizing Information
Step 1: Solvefortheunknownusingtheformulasstatedbelow
Variables To Solve For:
Metric Conversions
psi x 6.86 = kPa
kPa x 0.1456 = psi
Kg/cm2 x 14.28 = psi
psi x 0.07 = Kg/cm2
Lbs x 0.4536 = Kg
Kg x 2.2 = Lbs
KW Requirement:  GPHx  °F ∆Tx0.00244= KW
Temperature Rise:  KWx410÷ GPH=  °F ∆T
Flow Rate:  KWx410÷  °F ∆T= GPH
Model MSH & MH
Shipboard Electric
Water Heater
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