Rinnai Ru98E Reu Kb3237Wd Us Specification Sheet SP

: Rinnai Rinnai-Ru98E-Reu-Kb3237Wd-Us-Specification-Sheet-719864 rinnai-ru98e-reu-kb3237wd-us-specification-sheet-719864 rinnai pdf

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RU98e (KB3237WD)
Type of Appliance

Condensing, Tankless, Temperature controlled, continuous flow,
gas hot water system, Energy Star Qualified

Rinnai model number

REU-KB3237WD-US

Operation / Installation

Forced combustion; outdoor only

Minimum/Maximum Gas Rate (Input)

15,200 - 199,000 BTU/h

Electrical

Appliance:
Temperature Controller:

AC 120 Volts - 60 Hz
DC 12 Volts

Electrical Consumption

Normal: 63 w

Anti-frost protection: 168 w

Ignition System

Direct electronic ignition

Hot Water Capacity

Minimum flow rate: 0.26 GPM
Minimum activation flow rate: 0.4 GPM
Maximum flow rate: 9.8 GPM

Temperature

98° - 120° F (factory default) Maximum temperature is selectable at
120° F or at 140° F; 98° - 185° F available with the MCC-91-2
controller for commercial and hydronic applications

Temperature (without remote)

120° F (factory default) or 140° F

Approved Gas Types

Natural or Propane (ensure unit matches gas type)

Energy Factor (EF)

Natural Gas: 0.95

Service Connections

Gas supply: 3/4 inch MNPT
Cold water inlet: 3/4 inch MNPT
Hot water outlet: 3/4 inch MNPT

Isolation & Pressure Relief Valves Included

Heavy duty forged brass Webstone Isolator valves EXP E2, certified
to NSF/ANSI 61-8 for potable water

Water Flow Control

Water flow sensor, electronic water control and by-pass control

Minimum/Maximum Water Supply Pressure

15 - 150 PSI (50 PSI or above is recommended for maximum flow)

Standby: 2 w

Propane: 0.95

Rinnai is continually updating and improving products; therefore, specifications are subject to change without prior
notice. Local, state, provincial and federal codes must be adhered to prior to installation.
10.0

FLOW TABLE

Water Flow (gpm)

9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0

25

50

75

100

delta T - Temperature Rise (ºF)
© 2012 Rinnai Corporation

RU98e SP

3/2012

125

150

RU98e (KB3237WD)
Controller

MC-91-2US (included)
Deluxe controller: MC-100V-1US (optional)
Bathroom controller: BC-100V-1US (optional)
MCC-91-2US (optional; for hydronic and commercial applications)

Controller Cable

Non-polarized two-core cable, minimum 22 AWG

Safety Devices

•
•
•
•

Clearances from Combustibles

• Top of heater - 12 inches
• Front (Panel) - 24 inches
• Front (Exhaust) - 24 inches

• Back of heater - 0 inches
• Bottom of heater - 12 inches
• Sides of heater - 6 inches

Clearances from Non-combustibles

• Top of heater - 2 inches
• Front (Panel) - 0 inches *
• Front (Exhaust) - 24 inches

• Back of heater - 0 inches
• Bottom of heater - 2 inches
• Sides of heater - 1/8 inch

* 24 inches required for serviceability

• Remaining flame (OHS)
• Thermal fuse
• Automatic frost protection

Flame failure - Flame Rod
Boiling protection
Combustion fan rpm check
Over current - glass fuse

Min. / Max. Gas Supply Pressure

Natural Gas: min 5” W.C.
Propane Gas: min 8” W.C.

max 10.5” W.C.
max 13.5” W.C.

Manifold Gas Pressure (inches W.C.)

Natural Gas: high fire 3.0” W.C.
Propane Gas: high fire 3.5” W.C.

low fire 0.46” W.C.
low fire 0.50” W.C.

NOx

Complies with South Coast Air Quality Management District 14 ng/J or
20 ppm NOx emission levels

Limited
Warranty

Heat exchanger: 12 years* for residential, 10 years for residential and space heating, and 5 years* for
commercial; All other parts: 5 years*; Labor: 1 year;
(* 3 years if used as a circulating water heater within a circulation loop, when the water heater is in
series with a circulation system and all circulating water flows through the water heater, and where an
aquastat / thermostat, timer, or an on-demand recirculation system is not incorporated.)
Refer to the manual for complete warranty information.

2.0 (50)

DIMENSIONS
18.5 (470)
10.0 (253.8)

WEIGHT: 70.5 lb (32 kg)
0.4 (10.1)

10.1 (257.5)

0.6 (15)
C
J

0.6 (15)

B
D
G

A

28.4 (721.6)

25.7 (654)

E

8.7 (222)

I

H
F
K

DIM

Inches (mm)

DIM

Inches (mm)

A (GAS)

1.6 (40.2)

E

2.2 (56.3)

A (COLD)

2.0 (50.2)

F

2.3 (58.3)

A (HOT)

1.6 (41.2)

G

5.0 (127.2)

A (CONDENSATE
OUTLET)

0.9 (22.4)

B

H

2.0 (50)

I

3.0 (76)

5.0 (127.2)

J

7.1 (179)

C

1.9 (47.8)

K

18.3 (466)

D

0.52 (13.3)

Rinnai Corporation • 103 International Drive • Peachtree City, GA 30269 • Toll-Free: 1-800-621-9419 • Fax: 678-829-1666 • www.rinnai.us



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