Rinnai REU-NP3237FF-US-N Installation guide

Place

Model/Serial #

Label Here

Located in Manual Bag

U334-0773X02(00)

INTERNAL INDOOR MODELS:

RURi REUNPFFUS

RURi REUNPFFUS

EXTERNAL OUTDOOR MODELS:

RURe REUNPWUS

RURe REUNPWUS

Tankless Water Heater (With Pump)

Installation and Operation Manual

ANSI Z21.10.3 ● CSA 4.3

06000012336788

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 ....................................................................................................................................... 65

  ................................................................................................................ 66

5.2 Operating Instructions ........................................................................................................... 67

5.3 Control Panel ........................................................................................................................68

Rinnai Tankless Water Heater Installation and Operation Manual 4

  .......................................................................................................69

  ................................................................................................................. 70

5.6 Diagnostic Codes .................................................................................................................. 72

  ................................................75

6. Maintenance .................................................................................................................................. 81

6.1 Maintenance ......................................................................................................................... 81

  .................................................... 83

  ............................................................................................... 85

6.4 Draining the Water Heater .................................................................................................... 86

7. Appendices ................................................................................................................................... 87

7.1 Massachusetts State Gas Regulations ................................................................................. 87

  ..................................................................................................................... 89

  .................................................................................................................... 90

  ................................................................................ 91

  ...................................................................... 92

  ............................................................... 93

8. Warranty ........................................................................................................................................ 94

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





• 

-





• 

the installer.

• 







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

CAUTION

WARNING

Rinnai Tankless Water Heater Installation and Operation Manual 7

2.2 Safety Precautions





section.





The design is such that





• -







• 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

Topics in this section

• 

• 

• 

• 

• 

• Accessories

Controller

Piping Connections

Vent

Connections



Duct

Figure 1: Front View

Rinnai Tankless Water Heater Installation and Operation Manual 10

3.2 Bottom View

Gas

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

RUR199i RUR160i RUR199e RUR160e

Minimum Gas Consumption

Btu/h



Maximum Gas

Consumption Btu/h

   

Flow Rate

(Min-Max)

0.26-9.8 GPM



0.26-8.0 GPM



0.26-9.8 GPM



0.26-8.0 GPM



Max Flow Rate

with Parameter Adjustment

   

Weight

73 lb (33 kg) 71 lb (32 kg) 73 lb (33 kg) 71 lb (32 kg)

Sound Level

49 dB 48 dB 53 dB 52 dB

Electrical Data

Normal

84 W 52 W 81 W 49 W

Standby

1.3 W

With Freeze

Protection

160 W 198 W

Max Current



Fuse



Temperature Setting





Bypass Flow Control

Electronic

Gas

Supply

Pressure

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











Rinnai Tankless Water Heater Installation and Operation Manual 13

3.5 Dimensions



Indoor Models

(RUR199i and RUR160i)

       

Outdoor Models

(RUR199e and RUR160e)

       

Vent Connection:





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 Mod-

ule (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

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



























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

• -



RUR160i.

• -



RUR160e.

• 

-





-









• 



• 



• 



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

• Control-R™ Wi-Fi Module

• 



• 

• 

-

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

• 3/4 in. Tee (For Dedicated Return)

• 

• 

• 

• 

• 

• 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







• 





• 

-







-











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Rinnai REU-NP3237FF-US-N Installation guide

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