Technical Drawings

High Temp Return
Aquastat Connection
Bypass
Optional Tank
Bypass
Optional Pump
Setting)
Storage Tank
(No Burner or
Heating Element)
Submersible
Aquastat (Set at
Setting)
Temperature
20F below Rinnai
Storage Tank
(No Burner or
Heating Element)
Submersible
Aquastat (Set at
20F below Rinnai
Temperature
Low Temp Return
RS
Recovery and Circulation Pumps should
11.16.2018
12.15.2018
direct vent installations only.
be of bronze or stainless construction.
Reference the Rinnai Hot Water System
For this application:
Do not use electronic cascade controls
with storage recovery system.
Reference mixing valve manufacturer
instructions regarding recirculation.
guidelines.
Reference the Common Vent
Installation Manual for common vent
options. Air intake manifold shown for
Design Manual for recovery pump sizing
Note:
Condensate piping shall be CPVC or
PVC material and shall not be smaller
than the drain connection on the
appliance.
Components of the condensate
drainage shall be CPVC or PVC
material. All components shall be
selected for the pressure and
temperature rating of the installation.
Where the drain pipes from more than
one unit are manifolded together for
condensate drainage, the pipe or tubing
shall be sized in accordance with an
approved method as dictated
by local codes.
Condensate must be disposed of
according to local codes.
Circulation Pump should be controlled
by an Aquastat or Combination
Aquastat and Timer. Aquastat should be
set to a 10-20F differential of water
heater set temperature.
Circulation Pump should be sized to
maintain circulation loop temperature.
Circulation Pump should be sized to
overcome the pressure loss through the
tankless water heater, supply, and
return plumbing. Reference the Rinnai
Hot Water System Design Manual for
circulation pump sizing guidelines.
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.PROPRIETARY AND CONFIDENTIAL
D
C
B
A
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6 5
4
3
2
1
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
PROHIBITED.
MACHINED X.XXX =
TRSCU-IL4BB8-BC2
0.005
Systems Design Manual
RINNAI AMERICA CORPORATION
103 INTERNATIONAL DRIVE
SH
PEACHTREE CITY, GA 30269
12.15.2018
1-800-621-9419
UNLESS OTHERWISE SPECIFIED:
Angle =
REV
INTERPRET GEOMETRIC
SCALE: NTS
0.010
TOLERANCING PER:
MATERIAL
FINISH
DRAWN
CHECKED
ENG APPR.
COMMENTS:
DATENAME
TITLE:
SIZE
B
DWG. NO.
SHEET 1 OF 1
WEIGHT:
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
AB
Cold Water Supply
Gas Supply
Applicable Rack
Configurations
2 x TRW02CU
2 x TRS02CUIL
2 x TSR02CUILW
2 x TRS04CU
TRS04CU + TRS03CU
Pump / Aquastat
C
ontroller
Low Temp Supply
Aquastat Connection
Tankless Rack System
4-8 Unit Back2Back InLine w 2 Storage Tanks
High Temp Supply
Condensate Drain Line