Hubbell MSH - Manual (Page 7)

7
Option Note
Any and all optional equipment for a water heater must be called
out in the written specifications. A model number in and of itself
does not reflect 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 specifications 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