System Design Drawings

S
S
damage.
Note:
Warranty does not cover damage to freezing. The unit
may be drained manually. However, Rinnai highly
recommends that drain down solenoid valves be installed
that will automatically drain if power is lost. Rinnai also
recommends the installation of a surge protector with
terminals that attaches to the PC board in the unit and
allows the solenoid valves to operate if the unit is disabled
due to an error code. When electrical power to the water
heater fails, the normally closed solenoid valve closes
(stopping the flow of water into the heater) and the
normally open solenoid valve opens (allowing the heater
and associated piping to drain). Ensure that the drain for
the solenoids runs to the outside environment to prevent
discharging water inside the building causing water
Applies to HE and HE+ Models
Solenoid
L
ocal Code
Solenoid
Cold Water Supply
3/4" Normally Closed
located in the building structure.
Hot Water Supply
Gas Supply
1/2 "Normally Open
Vacuum Breaker
The vacuum breaker line should be
Route Drain per
Note:
Heat trace ALL water pipe and fittings
located outside home, attic, crawl
space, or building structure (ALL water
pipe and fittings above dashed line in
drawing).
Note:
ALL pipe and fittings shown below
dashed line should be located inside
home or building structure.
Non-Condensing Tankless
Single Unit Freeze Protection
12.15.2018
11.16.2018
RS
AB
This is not an engineering drawing; it is intended only as a guide and not
as a replacement for professional engineering project drawings. This
drawing is not intended to describe a complete system. It is up to the
contractor or engineer to determine the necessary components and
configuration of the particular system to be installed. The drawing does
not imply compliance with local building code requirements. It is the
responsibility of the engineer or contractor to ensure that the installation is
in accordance with all local building codes. Confer with local building
officials before installation.
MACHINED X.XXX =
PROHIBITED.
Systems Design Manual
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RINNAI AMERICA CORPORATION
SH
DO NOT SCALE DRAWING
12.15.2018
0.005
WH1-D
SHEET 1 OF 1
THIRD ANGLE PROJECTION
1-800-621-9419
SCALE: NTS
Angle =
WEIGHT:
PEACHTREE CITY, GA 30269
1
UNLESS OTHERWISE SPECIFIED:
REV
DWG. NO.
2
INTERPRET GEOMETRIC
103 INTERNATIONAL DRIVE
0.010
TOLERANCING PER:
MATERIAL
FINISH
DRAWN
CHECKED
ENG APPR.
COMMENTS:
DATENAME
TITLE:
SIZE
B
TOLERANCES:
Sheet Metal X.XX = 0.030
X.XXX = 0.010
Fraction = 1/32
Angle = 1.0
THE INFORMATION CONTAINED IN
THIS DRAWING IS THE SOLE
PROPERTY OF RINNAI AMERICA. ANY
REPRODUCTIONIN PART OR AS A
WHOLE WITHOUT THE WRITTEN
PERMISSION OF RINNAI AMERICA IS
PROPRIETARY AND CONFIDENTIAL