High Altitude Installations - Rinnai RU199i Installation Instructions Manual

Unless recovering a tank, Rinnai recommends electronically connecting with common
venting and where water heaters are in a manifold system. Refer to the Rinnai
Tankless Water Heater Installation and Operation Manual for additional details on
electronically connecting multiple water heaters.

High Altitude Installations

•
High altitude installations are certified up to 10,200 ft (3,109 m).
•
Reference the respective Rinnai Tankless Water Heater Installation and Operation Manual to set the water
heater up for the altitude at which they will be operating.
High Altitude Derate
Tankless water heaters using common venting at altitudes over 2,000 ft (610 m) will automatically derate according to
the tables below. Use the tables below for calculating your total BTU for multiple tankless water heaters.
PROPANE (LP GAS)
Number
2,001 -
of Water
5,200 ft
Heaters
1 168,000
2 332,640
3 493,920
4 651,840
5 806,400
6 957,600
7 1,105,440
8 1,249,920
PVC/CPVC Common Venting Installation Instructions
Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
NOTE
5,201 - 7,701 -
7,700 ft 10,200 ft
151,000 120,000
298,980 237,600
443,940 352,800
585,880 465,600
724,800 576,000
860,700 684,000
993,580 789,600
1,123,440 892,800
NATURAL GAS
Number
2,001 -
of Water
5,200 ft
Heaters
1 170,000
2 336,600
3 499,800
4 659,600
5 816,000
6 969,000
7 1,118,600
8 1,264,800
5,201 - 7,701 -
7,700 ft 10,200 ft
153,000 139,000
302,940 275,220
449,820 408,660
593,640 539,320
734,400 667,200
872,100 792,300
1,006,740 914,620
1,138,320 1,034,160
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