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26 Manual - Rinnai Condensing Water Heaters
Example: If you have one elbow then your maximum vent length is 35 feet (10.7 m). If your actual length is
greater than 15 ft (4.6 m) then move switch no. 1 (SW1) to OFF.
Maximum Vent Length
1. Determine the number of 90 degree elbows in the vent system. Two 45 degree elbows count as one 90
degree elbow.
2. Refer to the table to find the maximum vent length based on the number of elbows.
3. Follow the applicable note.
If you have a longer vent length, switch no. 1 is required to be in the OFF position. This ensures the water
heater will run properly. Blocked flue error codes and shutdowns may result if switch no. 1 is not in the correct
position.
NOTICE
Number of 90° Elbows
0 1 2 3 4 5 6
41 ft 1
(12.5 m)
35 ft 2
(10.7 m)
29 ft 3
(8.8 m)
23 ft 4
(7.0 m)
17 ft 4
(5.2 m)
11 ft 4
(3.4 m)
5 ft 4
(1.5 m)
Notes 1234
1 If the length is greater than 21 ft (6.4 m) then move
switch no. 1 (SW1) to OFF.
2 If the length is greater than 15 ft (4.6 m) then move
switch no. 1 (SW1) to OFF.
3 If the length is greater than 9 ft (2.7 m) then move
switch no. 1 (SW1) to OFF.
4 Move switch no. 1 (SW1) to OFF.
Switch No.
F
O
F
8
5
7
6
4
3
ON
1
2
Vent Products
Listed and Tested Vent Products for RC80i ...................... REU-KA2530FFUD-US
RC98i ...................... REU-KA3237FFUD-US
Manufacturer Product Parts
Rinnai/Ubbink Rolux Condensing Vent
System
Refer to the manufacturer’s technical literature for
specific part numbers and instructions.
Selkirk / Heat-Fab Saf-T Vent SC system
Metal-Fab Corr/Guard Vent/Air
Intake System
Vent Manufacturer Contact Information for Installation Instructions and Parts Lists:
Heat-Fab
Telephone: 800-772-0739
Fax: 413-863-4803
E-mail: custsvc@heat-fab.com
Web Site: www.heatfab.com
Rinnai/Ubbink
Telephone: 800-621-9419
Fax: 678-829-1666
Web Site: www.rinnai.us
Metal-Fab Inc.
Telephone: 800-835-2830
316-943-2351
Fax: 316-943-2717
E-mail: info@mtlfab.com
Web Site: www.metal-fabinc.com