System Design Drawings

S
S
AB 11.16.2018
RS 12.15.2018
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.
THIRD ANGLE PROJECTION
D
C
B
A
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6 5
4
3
2
1
PROHIBITED.
WH2-D
MACHINED X.XXX =
SHEET 1 OF 1
0.005
RINNAI AMERICA CORPORATION
Systems Design Manual
103 INTERNATIONAL DRIVE
PEACHTREE CITY, GA 30269
12.15.2018
1-800-621-9419
SH
Angle =
UNLESS OTHERWISE SPECIFIED:
INTERPRET GEOMETRIC
SCALE: NTS
DO NOT SCALE DRAWING
WEIGHT:
0.010
TOLERANCING PER:
MATERIAL
FINISH
DRAWN
CHECKED
ENG APPR.
COMMENTS:
DATENAME
TITLE:
SIZE
B
DWG. NO.
REV
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
the solenoids runs to the outside environment to prevent
damage.
discharging water inside the building causing water
and associated piping to drain). Ensure that the drain for
Applies to HE and HE+ models
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
Note:
For lowest activation flow rate, ensure water heaters are
connected with appropriate cascade controls.
Solenoid
C
old Water SupplyHot Water Supply
Gas Supply
Normally Open
Normally Closed
Supply Line)
Solenoid(Full Size of
Local Code
Route Drain per
The vacuum breaker line should be
Vacuum Breaker
located in the building structure.
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
Two Unit Freeze Protection