Outdoor Crest Supplemental Manual
Ratings
Outdoor Crest
AHRI Rating
Model Number
Note: Change “N” to
“L” for L.P. gas models.
Input
MBH
(Notes 4 - 8)
Min Max
Gross
Output
MBH
(Note 1)
Net
AHRI
Ratings
Water,
MBH
(Note 2)
OF(N,L)0751 50 750 720 626
OF(N,L)1001 50 999 960 835
OF(N,L)1251 62 1250 1200 1043
OF(N,L)1501 60 1500 1440 1252
OF(N,L)1751 70 1750 1680 1460
OF(N,L)2001 80 1999 1920 1670
OF(N,L)2501 125 2500 2403 2089
OF(N,L)3001 150 3000 2880 2504
OF(N,L)3501 175 3500 3360 2922
OF(N,L)4001 333 3999 3840 3339
OF(N,L)5001 500 4999 4800 4174
OF(N,L)6001 600 6000 5760 5009
Maximum allowed working pressure is located on the rating plate.
NOTICE
6
Notes:
1. The ratings are based on standard test procedures prescribed by the United States Department of Energy.
2. Net AHRI ratings are based on net installed radiation of sufficient quantity for the requirements of the building and nothing
need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance of 1.15.
3. Standard Outdoor Crest boilers are equipped to operate from sea level to 4,500 feet only. The boiler will de-rate by 1.4% for
each 1,000 feet above sea level up to 4,500 feet.
4. Ratings have been confirmed by the Hydronics Section of AHRI.
5. Outdoor Crest boilers comply with the requirements of CSD-1 Section CW-400 requirements as a temperature operation
control. The manual reset high limit provided with the Outdoor Crest is listed to UL353.
Other Specifications
Boiler Water
Content
Gallons
Water
Connections
Gas
Connections
73 3" 1 1/4"
77 3" 1 1/4"
87 3" 1 1/2"
94 4" 1 1/2"
106 4" 1 1/2"
111 4" 1 1/2"
157 4" 2"
156 4" 2"
202 4" 2"
201 4" 2 1/2"
254 6" 2 1/2"
304 6" 2 1/2"
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