Riello Array AR 399 SE User Manual

50
RECYCLING AND DISPOSAL
50
APPENDIX
APPENDIX
APPENDIX D - DE-RATING FOR ALTITUDE INSTALLATION
When the appliance is installed at an altitude higher than 2000 ft, the fan speed must be set to the maximum of the available range in
any case and a de-rating of the input capacity must be considered in function of the altitude combined with the total length of the vent
and combustion air pipe as reported in the following table (input BTU/hr)
NOTE: The following chart compensates for the affects of altitude on the energy content of the gas supply. No additional de-rate required.
ARRAY AR 399 SE
Altitude (ft) From 0% to 25% From 25% to 50% From 50% to 75% From 75% to 100%
0-2,000 399,220 399,22 399,22 399,22
3,000 383,251 376,48 369,83 363,30
4,000 367,921 361,42 355,04 348,77
5,000 353,204 346,97 340,84 334,82
6,000 339,076 333,09 327,21 321,43
7,000 325,513 319,76 314,12 308,57
8,000 312,493 306,97 301,55 296,23
9,000 299,993 294,69 289,49 284,38
10,000 287,993 282,91 277,91 273,00
ARRAY AR 500 SE
Altitude (ft) From 0% to 25% From 25% to 50% From 50% to 75% From 75% to 100%
0-2,000 500,000 500,00 500,00 500,00
3,000 480,000 471,52 463,20 455,02
4,000 460,800 452,66 444,67 436,82
5,000 442,368 434,56 426,88 419,34
6,000 424,673 417,17 409,81 402,57
7,000 407,686 400,49 393,41 386,47
8,000 391,379 384,47 377,68 371,01
9,000 375,724 369,09 362,57 356,17
10,000 360,695 354,32 348,07 341,92
To calculate the de-rating of the input capacity, follow this example:
The total equivalent length of the ue system is 55+35 = 90 ft. The maximum equivalent length for this type of installation is 100 ft (see
“Appendix G - Venting Size Data”).
The % range is 90/100 = 90%. This value is within the 75% and 100%.

Riello Array AR 399 SE Specifications

General

Brand	Riello
Model	Array AR 399 SE
Category	Water Heater
Language	English