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"
