3
BOILER RATINGS AND CAPACITIES
Boiler Ratings and Capacities
Figure 1 - Dimensions
13 3/4”
PN 240013023, Rev. B [12/31/2020]
OIL-FIRED HOT WATER BOILERS
RATINGS & CAPACITIES
BOILER MODEL
No.
of
Sections
Firing
Rate
†GPH
Input
**MBH
***
Heating
Capacity
**MBH
Net
AHRI
Rating
**MBH
Minimum
Chimney
Size/Height
A.F.U.E.
††
Dimensions (Inches)
A
B
C
UH3KWC0.80(T)
3
0.80
112
98
85
8”x8”x15’
86.0
14-1/2
6
8
UH4KWC1.00(T)
4
1.00
140
122
106
8”x8”x15’
86.2
17-3/4
6
9-5/8
UH4KWC1.25(T)
4
1.25
175
152
132
8”x8”x15’
86.0
17-3/4
6
9-5/8
UH5KWC1.55(T)
5
1.55
217
189
164
8”x8”x15’
86.0
21
6
11-1/2
** MBH = 1,000 Btu Per Hour BTU = British Thermal Unit
*** Heating capacity based on 13.1% CO2 with -0.02” W.C. draft over fire, and #1 smoke or less. Testing was done
in accordance with D.O.E. (Department Of Energy) test procedure.
† GPH = Gallons Per Hour Of Oil At 140,000 Btu Per Gallon
†† A.F.U.E. = Annual fuel utilization efficiency based upon
D.O.E. Test procedure.
Net AHRI Water Ratings based on piping allowance of 1.15. Consult manufacturer before selecting a boiler for
installations having unusual piping and pickup requirements, such as intermittent system operation, extensive
piping systems, etc.
