High Altitude Ratings; High Altitude Chart - ECR International Dunkirk DCBF-125 Installation, Operation And Maintenance Manual

Condensing gas fired boiler
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12.3 High Altitude Ratings

For elevations between 2000 ft (600 m) and 10,000 ft (3048 m), use the following information:
Model
Altitude
Number
-125
-150
2,000-4,500 ft
(600m-1350m)
-165
-205
-165
4,501-6,500 ft
(1372 m -1981 m)
-205
-165
6,501-10,000 ft
(1982 m -3048 m)
-205
Max CH Supply temp 176° F (80° C) for -125 and -150
*
Max DHW temp 140° F (60° C)
*

12.4 High Altitude Chart

125
Parameter
150
P71
High Fire
165
Fan Speed
205
125
Parameter
150
P72
Low Fire
165
Fan Speed
205
12 - RATINGS AND CAPACITIES
Input, MBH (KW)
Capacity,
Maximum
Minimum
113
22
113
22
147
26.5
147
26.5
135
24.1
135
24.1
113
20.3
113
20.3
GAS
Model
0-2,000 ft.
[0-610 m]
Setting
115
RPM
5650
Setting
220
RPM
7200
Setting
RPM
Setting
RPM
Setting
RPM
Setting
RPM
Setting
43
RPM
1180
Setting
40
RPM
1150
CO Limit < 200 ppm
Heating
AFUE, %
Max Input,
MBH*
MBH
101
95.0
101
95.0
137
137
95.0
137
95.0
184.5
126
95.0
126
95.0
168
105
95.0
105
95.0
141
**-150 Max DHW Flow rate 3.5 gpm (13.2 l/min)
-205 Max DHW flow rate 5.0 gpm (18.9 L/min)
**
Natural
Altitude
2,000- 10,000 ft
[610-3,048 m]
60
5100
170
6700
105
5500
225
7250
40
1150
40
1150
60
1350
60
1350
55
Domestic Hot Water (DHW) Circuit
Min Input,
Max Output,
MBH
MBH
22
122
26.5
157
24.1
143
20.3
120
LP
0-2,000 ft.
2,000- 10,000 ft
[0-610 m]
[610-3,048 m]
65
40
5150
4900
170
150
6700
6500
120
5700
220
7200
25
1000
25
1000
45
60
1200
1350
45
60
1200
1350
240012879 REV A, [01/31/2020]
**
Min Output,
MBH
19
23
20
17

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