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R75LSI
Rinnai R75LSI User Manual
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VA Series Indoor LS Manual
41
Ladder
Diagram
RELAY 1
IG
FROST
SENSI
NG
SWI
TCH
ANT
I-
FRO
S
T
HEA
TER
IG
N
IT
ION
COMB
USTI
ON
FA
N
3A
(
F
US
E
)
3A
(
F
US
E)
HOT
NE
UTR
AL
VA
RI
S
TO
R
DC1
2.6V
SOLENO
ID
D
R
IV
IN
G
CI
RC
U
I
T
CP
U
CENT
RA
L
PR
OC
E
SS
I
N
G
UNIT
FA
N
REMOTE
CONTROLLER
POV
FA
N
CONTROL
CI
RCUI
T
BY
-
P
ASS
FLOW
CONTROL
DE
VI
C
E
CI
RC
U
I
T
THE
RM
A
L
FUS
E
OV
ER
H
E
AT
SWI
TCH
MODUL
A
TI
NG
SOL
ENOID
VA
LV
E
DC40V
DC
5
V
A
B
C
SG
SWITC
HING
POW
ER
SUPPL
Y
THERMI
STOR
CI
RCUI
T
B
SG
REL
AY
1
A
WAT
E
R
F
L
O
W
SENS
OR
CI
RC
U
I
T
WAT
ER
F
L
O
W
CONTROL
DE
VI
C
E
CI
RC
U
I
T
A
SG
A
SG
SG
A
QS
SG
FR
FL
AM
E
DE
T
E
C
TI
N
G
CI
RCUI
T
FLA
ME
R
OD
GND
SG
A
REMOTE
CONT
ROL
LER
CI
RCUI
T
A
B
E
PG
A
BC
SG
SG
B
VARI
ST
O
R
AR
RESTER
GND
SG
WAT
E
R
F
L
OW
SENSOR
WAT
E
R
F
L
O
W
CONTROL
D
EVI
C
E
BY
-
P
AS
S
F
LOW
CONTR
OL
DEVI
C
E
M
M
DC1
2V
DC1
70V
D
E
PG
SV3
SV2
SV1
SV0
RELAY
DRIVI
NG
CIRC
U
I
T
D
BY-
PAS
S
SE
RVO
M
ODEL
O
N
L
Y
OUTGOI
N
G WA
TER
THERMISTOR
HEAT
EXCHANGER
THERMI
STOR
AIR
TEMPE
RATUR
E
THERMISTOR
IN
DO
O
R
MOD
EL
ON
L
Y
MO
D
U
LA
T
IN
G
VA
LV
E
P
OWE
R
CONTROL
CI
RC
U
I
T
40
42
Table of Contents
Default Chapter
1
Table of Contents
1
Table of Contents
2
Specifications
3
Consumer Safety Information
4
Safety Definitions
4
Safety Behaviors and Practices
4
Safety Features
4
Operating Instructions
5
Description of Operation
5
Features Available on Temperature Controllers
5
Temperature Controllers - Models
6
Setting the Temperature
8
Temperature Options Without a Temperature Controller
8
Temperature Ranges
9
Setting the Sound Volume
9
Setting the Clock
9
Using the Water Smart Bath Fill Function
10
Overview
10
Setting the Water Volume
10
Filling the Tub
11
Setting Controller to Mute
11
Maintenance
12
Cleaning
12
Vent System
12
Motors
12
Temperature Controller
12
Lime / Scale Buildup
12
Snow Accumulation
12
Visual Inspection of Flame
12
Error Codes
13
Error Code Table
13
Trouble Shooting for Common Issues
15
Accessing Operating Information
15
Water Quality
15
Flushing the Heat Exchanger
16
Error Code: LC or
16
Installation Instructions
17
General Instructions
17
Clearances from Appliance
18
Attachment of the Water Heater
18
Electrical Connection
19
Gas Piping General Instructions
19
Pipe Sizing Procedure - Example
20
Water Piping General Instructions
21
Pressure Relief Valve
21
Freeze Protection
21
Freeze Protection Piping
22
Recommended Piping for Basic Installation
23
Recommended Piping for Circulation Systems
24
Optional Piping for Circulation Systems
25
Venting Instructions Intake / Exhaust Guidelines
26
Condensate
26
Maximum Vent Length
27
Vent Products
28
Flue Terminal Clearances (ANS Z21.10.3 ● CSA 4.3 )
29
Additional Clearances
30
Flue Installation - Concentric Venting (R50Lsi, R75Lsi, R85Lsi)
31
Flue Installation (R98Lsi, R98Lsi-ASME)
32
Horizontal Terminations
32
Vertical Terminations
33
High Altitude Installation
34
Connecting Multiple Water Heaters
34
Temperature Controller Installation
35
Location
35
Configurations
35
Cable Lengths and Size
35
Mounting the Controller
36
Operating Instructions
37
Technical Data
38
Pressure Drop Curve
38
Outlet Flow Data
38
Space Heating
39
Dimensions
40
Ladder Diagram
41
Consumer Support
42
Warranty Information
42
Limited Warranty
42
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Rinnai R75LSI Specifications
General
Brand
Rinnai
Model
R75LSI
Category
Water Heater
Language
English
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