High Altitude Ratings; High Altitude Chart - UTICA BOILERS MAHF-100 Manual

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
MAHF-100
MACF-115
MAHF-125
2,000-4,500 ft
(600m-1350m)
MACF-150
MAHF-165
MACF-205
4,501-6,500 ft
MAHF-165
(1372 m -1981
MACF-205
m)
6,501-10,000 ft
MAHF-165
(1982 m -3048
MACF-205
m)
Max CH Supply temp 176° F (80° C) for MAHF-125 and MACF-150
*
Max DHW temp 140° F (60° C)
*

12.4 High Altitude Chart

Parameter
P71
High Fire
Fan Speed
Parameter
P72
Low Fire
Fan Speed
12 - RATINGS AND CAPACITIES
Input, MBH (KW)
Maximum Minimum
88.8 16.5
88.8 16.5
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
100
RPM
Setting
115
RPM
Setting
125
RPM
Setting
150
RPM
Setting
165
RPM
Setting
205
RPM
Setting
100
RPM
Setting
115
RPM
Setting
125
RPM
Setting
150
RPM
Setting
165
RPM
Setting
205
RPM
Heating
AFUE, %
Capacity,
MBH*
81.1 95.0
81.1 95.0
101 95.0
101 95.0
137 95.0
137 95.0
126 95.0
126 95.0
105 95.0
105 95.0
Natural
2,000- 10,000 ft
[610-3,048 m]
85 75
5,350 5,250
220 190
7,200 6,900
115 60
6150 5600
220 170
7200 6700
105
6050
225
7250
50
1,250
55
1,300
40
1150
40
1150
43 60
1180 1350
40 60
1150 1350
CO Limit < 200 ppm
63
Domestic Hot Water (DHW) Circuit
Min
Max Input,
Input,
MBH
MBH
109.7 16.6
137 22
184.5 26.5
168 24.1
141 20.3
** MACF-150 Max DHW Flow rate 3.5 gpm (13.2 l/min)
-205 Max DHW flow rate 5.0 gpm (18.9 L/min)
**
LP
Altitude
0-2,000 ft.
[0-610 m]
85
5350
220
7,200
65
5650
170
6700
120
6200
220
7200
70
1450
55
1,300
25
1000
25
1000
45
1200
45
1200
240013371 REV B, [10/01/2021]
**
Max
Min Output,
Output,
MBH
MBH
100.2 15.3
122 19
157 23
143 20
120 17
2,000- 10,000 ft
[610-3,048 m]
75
5250
190
6,900
40
5400
150
6500
60
1350
60
1350