25
FRESH WATER PLUMBING SYSTEM
STE
60 Gallon Fresh Water Tank, 11 Gallon Hot Water Heater, 3.5 GPM Fresh Water Pump
Water pressure switch is located on the DC breaker panel
Head connection
Head sink cold
Head sink hot
Water heater cold in
Water heater hot out
Fresh water fill
Fresh water vent
Water
Heater
Water
Tank
Fresh water pump
(Filter should be inspected
and cleaned monthly)
Cabin sink hot
Cabin sink cold
Shower hot
Shower cold
Cockpit shower cold
Cockpit sink cold
Water tank gauge
Cockpit sink hot
Cockpit shower hot
H-23
7/14
© 2014 American Boat & Yacht Council, Inc.
6
APPENDIX - POTABLE WATER SYSTEMS
The information contained in this appendix provides supplementary data about disinfecting a potable water system.
A SUGGESTED METHOD OF DISINFECTION
Perform the following steps in the order indicated:
a.
Flush entire system thoroughly by allowing potable water to flow through it;
b.
Drain system completely;
c.
Fill entire system with a chlorine solution having a strength of at least 100 parts per million, and allow to
stand for one (1) hour. Shorter periods will require greater concentrations of chlorine solution.
See Table I
d.
Drain chlorine solution from entire system;
e.
Flush entire system thoroughly with potable water;
f.
Fill system with potable water.
Table I shows how much disinfecting agent is required to make up various quantities of 100 parts per million chlorine
solution.
TABLE I – CHLORINE CONCENTRATIONS
Amount of chlorine compound required for 100 ppm solution
Solution
(Gallons)
Chlorinated Lime
25% (ounces)
High Test Calcium
Hypochlorite 70%
(ounces)
Liquid Sodium
Hypochlorite 1% (quarts)
5
0.3
0.1
0.2
10
0.6
0.2
0.4
15
0.9
0.3
0.6
20
1.2
0.4
0.8
30
1.8
0.6
1.2
50
3.0
1.0
2.0
100
6.0
2.0
4.0
NOTE: This table contains information taken from the Handbook on Sanitation of Vessel Water Points,
Public Health Service Publication No. 274 - Reprinted June 1963.
* * * * *
Origin and Development of ABYC H-23, Water Systems for Use on Boats
ABYC H-23, Installation of Potable Water Systems for Use on Boats was first published in 1970. Revised editions
were published in 1974, 1983, 1996, and 2008. In 2014 the title was revised to H-23, Water Systems for Use on
Boats. The 2014 version is the work of the Hull Piping Project Technical Committee.
* * * * *
ABYC technical board rules provide that all reports, including standards and technical information reports, are
advisory only. Their use is entirely voluntary. They represent, as of the date of publication, the consensus of
knowledgeable persons, currently active in the field of small craft, on performance objectives that contribute to small
boat safety.
The American Boat & Yacht Council assumes no responsibility whatsoever for the use of, or failure to use, standards
and technical information reports promulgated by it, their adaptation to any processes of a user, or any consequences
flowing therefrom.
Prospective users of the standards and technical information reports are responsible for protecting themselves
against liability for infringement of patents.
The American Boat and Yacht Council standards and technical information reports are guides to achieving a specific
level of design or performance, and are not intended to preclude attainment of desired results by other means.
