6
Ratings
Notes:
1. As an Energy Star Partner, the manufacturer has determined
that Cadet heating boilers meet the Energy Star guidelines
for energy efficiency.
2. The ratings are based on standard test procedures prescribed
by the United States Department of Energy.
3. 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.
4. Cadet heating boilers require special gas venting. Use only
the vent materials and methods specified in the Cadet
Heating Boiler Installation and Operation Manual.
5. Standard Cadet heating boilers are equipped to operate from
sea level to 4,500 feet
only
with no adjustments. The boiler
will de-rate by 4% for each 1,000 feet above sea level up to
4,500 feet.
6. High altitude Cadet heating boilers are equipped to operate
from 3,000 to 12,000 feet
only
with no field adjustments.
The boiler will de-rate by 2% for each 1,000 feet above 3,000
feet. High altitude models are manufactured with a different
control module for altitude operation, but the operation
given in this manual remains the same as the standard
boilers. A high altitude label (as shown in FIG. A) is also
affixed to the unit.
Maximum allowed working pressure is located on the rating plate.
NOTICE
Cadet Heating Boiler
AHRI Rating
Model Number
Note: Change
“N” to “L” for
L.P. gas models.
Input
MBH
(Note 5)
Min Max
Heating
Capacity
MBH
(Note 2, 8
Net
AHRI
Ratings
Water,
MBH
(Note 3, 8)
AFUE
%
(Note 1, 8)
CDN040
9
40
37
32
94.0
CDN070
14
70
65
57
94.0
CDN100
20
100
93
81
94.0
C(C,D)(N)120
24
120
112
97
94.0
7. The Cadet heating boiler input rate, on some models, is
reduced for vent lengths beyond the minimum. Models
CD(N,L)070 and CD(N,L)100 with 2" vent will reduce
1% for every 10 feet of vent. Models CD(N,L)120 with
3" vent will reduce 0.5% for every 10 feet of vent.
8. Ratings have been confirmed by the Hydronics Institute,
Section of AHRI.
9. The manual reset high limit provided with the Cadet is
listed to UL353.
Other Specifications
Boiler Water
Content
Gallons
Water
Connections
Gas
Connections
Vent/Air
Size
(Note 4)
.3
3/4"
1/2"
2"
.4
1"
1/2"
2”
.5
1"
1/2"
2"
.6
1"
1/2"
3"
Figure A High Altitude Label Location
IMG00206
UNIT EQUIPPED FOR
HIGH ALTITUDE
3,000 FT. TO 12,000 FT.
Installation & Service Manual
A
S
M
E
H
LOW LEAD CONTENT
