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MODEL INPUT BTU/HR. THERMAL 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
NUMBER NATURAL & L.P. EFFICIENCY UNITS 22°C 28°C 33°C 39°C 45°C 50°C 56°C 61°C 67°C 72°C 78°C
GX90-550(A) 550,000 NAT 80% GPH 1333 1067 889 762 667 593 533 485 444 410 381
LPH 5047 4037 3364 2884 2523 2243 2019 1835 1682 1553 1442
GX90-640(A) 640,000 NAT 80% GPH 1551 1241 1034 887 776 690 621 564 517 477 443
LPH 5873 4698 3915 3356 2936 2610 2349 2135 1958 1807 1678
GX90-715(A) 715,000 NAT 80% GPH 1733 1387 1156 991 867 770 693 630 578 533 495
L
PH 6561 5249 4374 3749 3280 2916 2624 2386 2187 2019 1875
GX90-500(A) 500,000 LP 80% GPH 1212 970 808 693 606 539 485 441 404 373 346
L.P.
LPH 4588 3670 3059 2622 2294 2039 1835 1668 1529 1412 1311
GX90-600(A) 600,000 LP 80% GPH 1455 1164 970 831 727 647 582 529 485 448 416
L.P.
LPH 5506 4404 3670 3146 2753 2447 2202 2002 1835 1694 1573
GX90-680(A) 680,000 LP 80% GPH 1649 1319 1099 942 824 733 659 599 550 507 471
L.P.
LPH 6240 4992 4160 3565 3120 2773 2496 2269 2080 1920 1783
Recovery ratings are based on thermal efficiencies obtained in a CSA certified laboratory. Recovery rate shown on the rating plate (80%) Thermal Efficiency in accordance with ANSI Z21.10.3
labeling requirements. (A) indicates available ASME model.
RECOVERY CAPACITIES Recovery in U.S. Gallons/Hr. (GPH) and Liters/Hr. (LPH) at Various Temperature Rises.
MODEL TANK CAPACITY INPUT BTU/HR. TEMP. 5 10 15 20 30 45 60 120 180 Min. to Rec.
N
UMBER
GALLONS LITERS
N
AT. & L.P. RISE UNITS Min. Min. Min. Min. Min. Min. Min. Min. Min. Contents
GX90-550(A) 90 341 550,000 NAT 100°F GAL 107 152 196 241 330 463 596 1130 1663 10
3
7.7°C LTR. 407 575 743 911 1248 1752 2257 4276 6294
GX90-640(A) 90 341 640,000 NAT 100°F GAL. 1
15 166 218 270 373 529 684 1304 1925
9
3
7.7°C LTR. 434 630 826 1022 1413 2000 2587 4936 7285
GX90-715(A) 90 341 715,000 NAT 100°F GAL. 1
21 179 236 294 410 583 756 1450 2143
8
3
7.7°C LTR. 457 676 894 1113 1551 2207 2863 5487 8111
GX90-500(A) 90 341 500,000 LP 100°F GAL. 1
03 144 184 225 305 427 548 1033 1518
11
L.P.
3
7.7°C LTR. 391 544 697 850 1156 1615 2073 3909 5744
GX90-600(A) 90 341 600,000 LP 100°F GAL. 1
12 160 209 257 354 499 645 1227 1809
9
L.P.
3
7.7°C LTR. 422 606 789 972 1340 1890 2441 4643 6845
GX90-680(A) 90 341 680,000 LP 100°F GAL. 118 173 228 283 393 558 722 1382 2041 8
L.P. 3
7.7°C LTR. 446 654 862 1070 1486 2110 2886 5230 7726
MAXIMUM DELIVERY In U.S. Gallons and Liters. (Includes useable storage and recovery for indicated times.)
4412
102 102 305
4412
102 102 305
4412
102 102 305
4412
102 102 305
4412
102 102 305
4412
102 102 305
GX90-550 inches
mm
GX90-640 inches
mm
GX90-715 inches
mm
GX90-500 inches
L.P.
mm
GX90-600 inches
L.P.
mm
GX90-680 inches
L.P.
mm
CLEARANCES TO COMBUSTIBLES
Allow a minimum of 18" (457mm) front clearance for servicing.
WATER CONNECTIONS APPROXIMATE
MODEL FRONT REAR
SHIPPING WEIGHT
NUMBER UNITS
ABCDEFG SIDE SIDE STD. ASME
GX90-550(A) inches 74.5 68 30 25 10 59 12 2905 945
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
GX90-640(A) inches 74.5 68 30 25 10 59 12 2905 945
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
GX90-715(A) inches 74.5 68 30 25 10 59 12 2905 945
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
GX90-500(A) inches 74.5 68 30 25 10 59 12 2905 945
L.P.
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
GX90-600(A) inches 74.5 68 30 25 10 59 12 2905 945
L.P.
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
GX90-680(A) inches 74.5 68 30 25 10 59 12 2905 945
L.P.
mm 1892 1727 768 635 254 1509 25.4 51 51 905 945
All Models Require a 120V Power Source. (A) Suffix Indicates ASME Tank Construction Available.
When you
can’t afford
to be without
hot water, go to
the Xtreme!
E
C
G
F
D
BA
OUTLET
FRONT SIDE
INLET
FRONT SIDE
SYSTEM
SENTINEL
T&P
MODEL
NUMBER UNITS SIDE REAR TOP
DIMENSIONAL INFORMATION All Dimensions Shown in English and Metric.
Rheem-Ruud Xtreme