Rinnai REU-N3237FF-US-P Installation guide

REU-N3237FF-US-P
Rinnai
Brand
Rinnai
Model
REU-N3237FF-US-P
Category
Water heaters & boilers
Type
Installation guide
Place
Model/Serial #
Label Here
Located in Manual Bag
U334-0771X02(00)
INTERNAL INDOOR MODELS:
RUi REUNFFUS
RUi REUNFFUS
RUiREUNFFUS
RUi REUNFFUS
EXTERNAL OUTDOOR MODELS:
RUe REUNWUS
RUe REUNWUS
RUe REUNWUS
RUeREUNWUS
Tankless Water Heater (Residential)
Installation and Operation Manual
ANSI Z21.10.3 ● CSA 4.3
06000012336368
Rinnai Tankless Water Heater Installation and Operation Manual 2
WARNING
If the information in these instructions is not followed exactly, a re or explosion may result
causing property damage, personal injury, or death.
• 
other appliance.
• WHAT TO DO IF YOU SMELL GAS
– 
– 
– -
tions.
– 
• 
or the gas supplier.
Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute
blessure ou la mort.
• -
ité de cet appareil ou de tout autre appareil.
• QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :
– 
– -

– 

– 
• -

AVERTISSEMENT
Full-length French and Spanish versions available online at rinnai.us
Rinnai Tankless Water Heater Installation and Operation Manual 3
Contents
1. Welcome ..........................................................................................................................................5
2. Safety ............................................................................................................................................... 6
  ....................................................................................................................... 7
  .................................................................................................................. 7
3. About the Water Heater .................................................................................................................. 9
  ............................................................................................................................... 9
  .......................................................................................................................... 10
  ......................................................................................................................... 11
  ........................................................................................................................ 12
  ........................................................................................................................... 13
3.6 Accessories .......................................................................................................................... 15
4. Install the Water Heater ................................................................................................................ 17
4.1 Installation Guidelines .......................................................................................................... 17
4.2 What You Will Need .............................................................................................................. 18
4.3 Choose an Installation Location ............................................................................................ 19
4.4 Mount the Water Heater to the Wall ...................................................................................... 24
4.5 Vent the Water Heater .......................................................................................................... 26
  .......................................................................................................... 50
  .................................................................................................... 51
  ................................................................................................. 52
4.9 Connect Condensate Drain .................................................................................................. 54
  ....................................................................................................... 57
  ................................................................................................... 60
  ............................................................................................. 61
  ............................................................................................. 63
4.14 Post-Water Heater Installation Checklist ............................................................................. 64
5. Operation ....................................................................................................................................... 66
  ................................................................................................................ 66
5.2 Operating Instructions ........................................................................................................... 68
5.3 Control Panel ........................................................................................................................69
Rinnai Tankless Water Heater Installation and Operation Manual 4
  .......................................................................................................70
  ................................................................................................................. 71
5.6 Diagnostic Codes .................................................................................................................. 73
6. Maintenance .................................................................................................................................. 76
6.1 Maintenance ......................................................................................................................... 76
  .................................................... 78
  ............................................................................................... 80
6.4 Draining the Water Heater .................................................................................................... 81
7. Appendices ................................................................................................................................... 82
7.1 Massachusetts State Gas Regulations ................................................................................. 82
  ..................................................................................................................... 84
  .................................................................................................................... 85
  ................................................................................ 86
  ............................................................... 87
8. Warranty ........................................................................................................................................ 88
Rinnai Tankless Water Heater Installation and Operation Manual 5
ANSI 
Institute
BTU 
DHW 
GPM 
LP 
NG Natural Gas
PP 
PRV 
PSI 
W.C. 
To The Consumer
• -


• 
• 


-
tions.
• 

• 


Acronyms and Abbreviations







To The Installer
• 

-


• 

– Gas sizing
– 

– 
and local codes
– 
– 
heaters. Training on Rinnai Tankless
Water Heaters is accessible at

• 
-


• 

• 



1. 1. WelcomeWelcome
Table 1
WARNING AVERTISSEMENT
Rinnai Tankless Water Heater Installation and Operation Manual 6
• -
tions données dans cette notice pour

-

• -
tions données dans cette notice pour

-

• 
-

autre appareil.
• QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ :
– 
– 


– -


– -

• 


de gaz.
• -

-

• 



• -


• WHAT TO DO IF YOU SMELL GAS:
– 
– 

– 


– 

• 


• 


2. 2. SafetySafety
WARNING
WARNING
CAUTION
Rinnai Tankless Water Heater Installation and Operation Manual 7
2.2 Safety Precautions





-


• -



• Keep the area around the appliance clear



• -






• -

• -

– 




– -


– 



building.


and others.




DANGER










2.1 Safety Symbols
Rinnai Tankless Water Heater Installation and Operation Manual 8
• 

-

• 



• 
heater can be hot to touch.
• -


(Ne pas entreposer ni utiliser d’essence ou
ni d’autres vapeurs ou liquides inamma-
bles à proximité de cet appareil ou de tout
autre appareil.)
• -
tional codes.
• 


• 

• 


• 
-



– 






• 






(N’utilisez pas cet appareil s’il a été plunge
dans l’eau, même partiellement. Faites
inspecter l’appareil par un licence pro-
fessionnelle et remplacez toute partie du
système de contrôle et toute commande
qui ont été plongés dans l’eau.)
• 

• -


(En cas de surchaue ou si l’alimentation
en gaz ne s’arrête pas, fermez manuelle-
ment le robinet d’arrêt de l’admission de
gaz.)
• 

• 

• -


• 

• -








gas appliance.
Rinnai Tankless Water Heater Installation and Operation Manual 9
3. 3. About the Water HeaterAbout the Water Heater
3.1 Front View
Indoor Outdoor
Figure 1: Front view
Topics in this section
• 
• 
• 
• 
• 
• Accessories
Controller
Piping Connections
Vent
Connections

Duct
Rinnai Tankless Water Heater Installation and Operation Manual 10
3.2 Bottom View
Gas Inlet
Hot Water
Outlet
Cold Water
Inlet


Figure 2: Bottom view
Rinnai Tankless Water Heater Installation and Operation Manual 11
3.3 Components
Air Intake

Ignition Unit

Control Panel





Air Inlet Filter

Venturi
Silencer
Intake

Figure 3: Components
Rinnai Tankless Water Heater Installation and Operation Manual 12
3.4 Specifications
Indoor Units Outdoor Units
RU199i RU180i RU160i RU130i RU199e RU180e RU160e RU130e
Minimum Gas
Consumption
Btu/h

Maximum Gas
Consumption
Btu/h
       
Flow Rate
1
(Min-Max)
0.26-9.8 GPM

0.26-9.0 GPM

0.26-8.0 GPM

0.26-6.6 GPM

0.26-9.8 GPM

0.26-9.0 GPM

0.26-8.0 GPM

0.26-6.6 GPM

Max Flow Rate
with Parameter
Adjustment
11 GPM

10 GPM

9 GPM

7 GPM

11 GPM

10 GPM

9 GPM

7 GPM

Weight 64 lb (29 kg) 62 lb (28 kg) 64 lb (29 kg) 62 lb (28 kg)
Sound Level 48 dB 47 dB 53 dB 52 dB
Electrical Data
Normal 84 W 65 W 52 W 38 W 81 W 62 W 49 W 36 W
Standby
1.3 W
With Freeze
Protection
148 W 152 W
Max Current

Fuse

Temperature
Setting


Bypass Flow
Control
Electronic
Gas Supply
Pressure
2
Natural Gas

Propane 
Type of Appliance 
Ignition System Direct Electronic Ignition
Electric
Connections


Water Supply
Pressure


Remote Control
Cable

ENERGY STAR®
Qualied
Yes
Complies with
South Coast
Air Quality
Management
District 14 ng/J
or 20 ppm NOx
emission levels
Yes
1

2



Rinnai Tankless Water Heater Installation and Operation Manual 13
3.5 Dimensions

Indoor Models

 
Outdoor Models

 
Vent Connection:


3 in./5 in. Concentric.
Figure 4: Indoor Dimensions
Figure 5: Outdoor Dimensions
Rinnai Tankless Water Heater Installation and Operation Manual 14
5.6. (142)
5.10 (129)
7.75 (197)
5.25 (133)
3.5 (89)
2.8 (71)
7.6 (193)
6.2 (157)
1.22 (31)
.36 (9)
Cold Inlet
Gas
Hot Outlet
Condensate
Drain
Pressure

Connection Connection Size
Gas 3/4 in. NPT
Cold Inlet 3/4 in. NPT
Hot Outlet 3/4 in. NPT
Condensate Drain 1/2 in. NPT
 M33 Thread
3.5.1 Supply Connections

Figure 6: Supply Connections

Rinnai Tankless Water Heater Installation and Operation Manual 15
Product Product Description Image

Part #: 108000105


Condensate Neutralizer
Part #: 804000074


ScaleCutter
Part #: 103000038




Cartridge
Part #: 103000039



Part #: 104000059
-


Additional Controller
Part #: MC-601-BK
MC-601-W
MC-195T-US



Part #: RGB-CTWH-4



Part #: PCD07-SM


Control-R™ Wi-Fi
Module (And
Accessories)
Part #: RWM101
-
-

The Control-R™ Wi-Fi Module and MC-


together.
3.6 Accessories




Table 4: Accessories
Rinnai Tankless Water Heater Installation and Operation Manual 16
Product Product Description Image

Part #: RWMGTK03




Part #: 105000250
-

EZConnect™ Cable
Part #: REU-EZC-2




Part #: REU-OPU3
-


handler applications.




Rinnai Tankless Water Heater Installation and Operation Manual 17
4. 4. Install the Water HeaterInstall the Water Heater
THIS SECTION IS INTENDED FOR THE
INSTALLER











Heaters is accessible online at

4.1 Installation
Guidelines

guidelines:
• 
-

• -



• 





-




• 





• 









• 



• 

-

-


• -


(En cas de surchaue ou si l’alimentation
en gaz ne s’arrête pas, fermez manuelle-
ment le robinet d’arrêt de l’admission de
gaz.)
• 

-
-
ance.
Topics in this section
• Installation Guidelines
• 
• Choose Installation Location
• Mount Water Heater to the Wall
• Vent Water Heater
• 
• 
• 
• Connect Condensate Drain
• 
• 
• 
• 
• Post-Installation Checklist
Rinnai Tankless Water Heater Installation and Operation Manual 18
DO NOT
• 


• 


• 
-


-




• 

• 

• 

spas) in the appliance.
• DO NOT use substitute parts that are not

4.2 What You Will
Need
4.2.1 Items Included
Unpack the Rinnai Tankless Water Heater



Care at 1-800-621-9419.
• Rinnai Tankless Water Heater
• 

• 
• 
-
nance)
• Literature Bag
– Tankless Water Heater Installation and

– 

– 
printed QR code)
• 
connection)
• 





• 

4.2.2 Items Needed (Field-
Supplied)
• 
• 
• Wire Cutters
• 
• 
• 
• Soap or gas leak detector solution
• 
• 

• Pipe insulation
• 
• 
• 
• 
• Torch set
• Copper tubing cutter
• Steel pipe cutter
• Heat tape
• 
• 
• 
• 
• 
Rinnai Tankless Water Heater Installation and Operation Manual 19
4.3 Choose an
Installation
Location









4.3.1 Water Quality
Guidelines






















SS
SS







4.3.2 Environment



















Regulation
Contaminant Maximum Level
Total Hardness 
 
Chlorides * 
Copper * 



Iron * 
Manganese * 
pH * 6.5 to 8.5

Solids) *

Zinc * 

Rinnai Tankless Water Heater Installation and Operation Manual 20
4.3.3 Internal (Indoor) Water
Heaters
• 
-



-





• 
be installed so that it is sheltered/protected



• 
-

• 


-

• 
-



-





4.3.4 External Water Heaters
and Vent Terminations
• 


• 
be installed so that it is sheltered/protected



• 


• 
-



-





Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71
  • Page 72 72
  • Page 73 73
  • Page 74 74
  • Page 75 75
  • Page 76 76
  • Page 77 77
  • Page 78 78
  • Page 79 79
  • Page 80 80
  • Page 81 81
  • Page 82 82
  • Page 83 83
  • Page 84 84
  • Page 85 85
  • Page 86 86
  • Page 87 87
  • Page 88 88
  • Page 89 89
  • Page 90 90
  • Page 91 91
  • Page 92 92

Rinnai REU-N3237FF-US-P Installation guide

REU-N3237FF-US-P
Rinnai
Brand
Rinnai
Model
REU-N3237FF-US-P
Category
Water heaters & boilers
Type
Installation guide
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents