Aqua-Hot 375-LP, Руководство по установке

Страница: 28 / 56

© 2011 Aqua - Hot
®
375 - LP Installation Manual
S
ECTION
5: D
OMESTIC
W
ATER
S
YSTEM
— Page 28 —
Domestic Water System Requirements:
NOTE: As stated directly from the ANSI A119.2/NFPA
501C Standard on Recreation Vehicles, 1993 Edi-
tion:
“Piping Systems shall be sized to provide an ade-
quate quantity of water to each Plumbing Fixture
at a flow rate sufficient to keep the Fixture in a
clean and sanitary condition without any danger of
back- flow or siphoning.”
The Aqua-Hot is equipped with a pressure-relief
valve, which releases excessive pressure in the do-
mestic water system, if necessary, as well as a tem-
pering valve in order to regulate the temperature
of the hot water.
NOTE: A water heater or ice maker shall not be counted
as a “water - using fixture” when computing pipe
sizes.
Domestic Water System Plumbing:
1. Connect a domestic water plumbing line from
the domestic water demand pump/water mani-
fold to the cold water inlet port on the Aqua-
Hot. Reference Figures 33 and 34.
2. Connect a domestic water plumbing line from
the Aqua-
Hot’s hot water outlet port to the hot
water system’s distribution lines/water manifold.
Reference Figures 33 and 34.
Use the RVIA-provided table below in order to de-
termine the proper sizing of pipe and tubing re-
quired to insure maximum efficiency.
The size of water supply piping and branch line shall
not be less than specified in the table below.
NOTE: Please note that it may be necessary to utilize an
accumulator tank within the domestic water sys-
tem. Reference Figure 34. Although the Aqua-Hot
is equipped with a pressure-relief valve, the use of
an accumulator tank will help prevent excessive
“weeping” of the valve. Manufacturers of pressure
-relief valves indicate that excessive weeping of
these valves will cause the “seat” in the valve to
deteriorate, and, in turn, the valve will fail prema-
turely. For additional information regarding accu-
mulator tanks, please be sure to reference the Rec-
reational Vehicle Industry Association’s (RVIA)
technical publication titled “Recreational Vehicle
Plumbing Systems.” To obtain a copy of this par-
ticular publication, please contact RVIA at (703)
620-6003 or visit them online at www.rvia.org.