System Application Drawings
Out
External
Safety
Contact
DHW
OT Bus
On/Off
Out
External
Safety
Contact
DHW
OT Bus
On/Off
Do not apply power
Boil
Com
Indr
DHW
UnO
Sw
Com
-
+
Mod 1 mA
7.5A7.5A7.5A7.5A
1 2 3 4 5
6 7 8 9 10 11 12 13 14
Boiler
Demand
DHW
Dem
Com
Dem
Setp
Dem
Prim
P1
Power
L
N
DHW
Pmp/Vlv
Relay Relay
1 2
2/ P2
15 16 17 18 19 20 21 22 23
Out
T2
Z2
T1
Z1
P1
Solo Boiler 1
RELAY
RELAY
Class 2 Transformer
24 V AC
S3
S2
S1
**FIELD SUPPLIED ZONE CONTROLLER**
Relay = 24 V AC DPDT Electrical Relay
P1 = DHW Circulator (for indirect tank)
Z1, Z2 = Zone Circulators
T1, T2 = Thermostats (heat demand control)
S1 = Outdoor Sensor
S2 = Boiler Supply Sensor
S3 = DHW Submersible Sensor (for DHW pump control)
Solo Boiler 2
120 V AC
D
C
B
A
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
TOLERANCES:
Sheet Metal X.XX =
0.030
X.XXX =
0.010
Fraction =
1/32
Angle =
1.0
MACHINED X.XXX =
0.005
Angle =
0.010
INTERPRET GEOMETRIC
TOLERANCING PER:
MATERIAL
FINISH
DRAWN
CHECKED
ENG APPR.
COMMENTS:
DATE
NAME
TITLE:
SIZE
B
DWG. NO.
REV
WEIGHT:
SCALE: NTS
UNLESS OTHERWISE SPECIFIED:
RS
0
SHEET 1 OF 1
MW-2S-2ZP-I
DO NOT SCALE DRAWING
RINNAI AMERICA CORPORATION
103 INTERNATIONAL DRIVE
PEACHTREE CITY, GA 30269
1-800-621-9419
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
PROHIBITED.
THIRD ANGLE PROJECTION
PROPRIETARY AND CONFIDENTIAL
AN
03/29/2019
03/22/2019
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.
Two M-Series Solo Boilers with
Indirect Tank, Two
Heating
Zones with Zone Pumps
Page 19