Rinnai RU80E specifications Dimensions

Controller

Controller Cable

Safety Devices

Clearances from Combustibles

Clearances from Non-combustibles

* 24 inches required for serviceability

Min. / Max. Gas Supply Pressure

Manifold Gas Pressure (inches W.C.)

NOx

RU80e (KB2530WD)

MC-91-2 (included)

Deluxe controller: MC-100V-1US (optional)

Bathroom controller: BC-100V-1US (optional)

MCC-91-2 (optional; for hydronic and commercial applications) Non-polarized two-core cable, minimum 22 AWG

•	Flame failure - Flame Rod	•	Remaining flame (OHS)
•	Boiling protection	•	Thermal fuse
•	Combustion fan rpm check	•	Automatic frost protection

•Over current - glass fuse

• Top of heater - 12 inches		• Back of heater - 0 inches
•	Front (Panel) - 24 inches	• Bottom of heater - 12 inches
•	Front (Exhaust) - 24 inches	• Sides of heater - 6 inches
• Top of heater - 2 inches		• Back of heater - 0 inches
• Front (Panel) - 0 inches *		• Bottom of heater - 2 inches
•	Front (Exhaust) - 24 inches	• Sides of heater - 1/8 inch

Natural Gas:	min 5”	W.C.		max 10.5”	W.C.
Propane Gas:	min 8”	W.C.		max 13.5”	W.C.
Natural Gas:	high fire 1.9”		W.C.	low fire 0.46”		W.C.
Propane Gas:	high fire 2.1”		W.C.	low fire 0.50”		W.C.

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

Limited Heat exchanger: 12 years* for residential, 10 years for residential and space heating, and 5 years* for

Warranty 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.

	DIMENSIONS		WEIGHT: 70.5 lb (32 kg)
		18.5 (470)		0.4 (10.1)	10.1 (257.5)	0.6 (15)
2.0(50)		10.0 (253.8)

C

B

J

0.6 (15)
		28.4 (721.6)
	25.7 (654)

8.7 (222) A

D		I
	H

EG

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	0.9 (22.4)	H	2.0	(50)
OUTLET)
		I	3.0	(76)
B	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