Ratings - Lochinvar Crest 2.5 Installation & Operation Manual

Ratings

Model Number
Note: Change "N" to
"L" for L.P. gas models.
FB(N,L)1500
FB(N,L)2000
FB(N,L)2500
00
00
FB(N,L)3000
FB(N,L)3500
of
*For LP models the minimum input is 420 MBH.
Maximum allowed working pressure is located on the rating plate.
NOTICE
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. Crest boilers require special gas venting.
the vent materials and methods specified in the Crest
Installation and Operation Manual.
4. Standard Crest boilers are equipped to operate from sea
level to 4,500 feet only with no adjustments.
5. High altitude Crest boilers are equipped to operate
from 3,000 to 12,000 feet. High altitude models are
manufactured with different control parameters for high
altitude operation, but the sequence of operation given
in this manual remains the same as the standard boilers.
A high altitude label (as shown in FIG A.) is also affi xed
to the unit.
6. Standard Crest boilers will de-rate by 2.2% for each 1,000
feet above sea level up to 4,500 feet when combustion
calibration is performed and CO
recommended levels.
7. High altitude Crest boilers will de-rate by 1.4% for each
1,000 feet above sea level up to 5,500 feet and 1.8% for
each 1,000 feet above 5,500 feet.
8. Ratings have been confi rmed by the Hydronics Section
of AHRI.
6
Crest
AHRI Rating
Gross
Input
Output
MBH
MBH
(Note 4)
(Note 1)
Min Max
60 1500 1380
80 2000 1840
125 2500 2300
150 3000 2760
200* 3500 3220
Use only
's are adjusted to the
2
Installation & Operation Manual
Other Specifications
Net
AHRI
Appliance
Pipe
Ratings
Water
Size
Water,
Content
Outlet
MBH
Gallons
(Note 2)
96 4"
1200
132 4"
1600
161 4"
2000
181 4"
2400
215 4"
2800
UNIT EQUIPPED FOR
HIGH ALTITUDE
3,000 FT. TO 12,000 FT.
Figure A High Altitude Label Location
Vent
Size
Pipe Air
Gas Inlet
Size Size
Size
Inlet
(Note 3)
4" 1 1/2" 7" 7"
4" 1 1/2" 8" 8"
4" 2" 8" 9"
4" 2" 10" 10"
4" 2" 10" 10"
Weight
w/Water
(lbs.)
2500
3055
3650
4125
4750