UTICA BOILERS MAHF-75 Installation, Operation And Maintenance Manual page 70

1 2 .3 H igh Alt it ude Ra t ings
For elevations between 2000 ft (600 m) and 10,000 ft (3048 m), use the following information:
Model
Alt it ude
Num ber
MAHF- 75
MAHF- 100
MACF- 115
2,000- 4,500 ft
MAHF- 125
( 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)
*
1 2 .4 H igh Alt it ude Cha rt
Param eter
P71
High Fire
Fan Speed
75 & 100
Param eter
P72
Low Fire
Fan Speed
1 2 - RATI N GS AN D CAPACI TI ES
I nput , MBH ( KW)
Maxim um Minim um
69.5 16.5
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
Setting
75
RPM
Setting
100
RPM
Setting
115
RPM
Setting
125
RPM
Setting
150
RPM
Setting
165
RPM
Setting
205
RPM
Setting
RPM
Setting
115
RPM
Setting
125
RPM
Setting
150
RPM
Setting
165
RPM
Setting
205
RPM
Heat ing
AFUE, %
Capacit y,
MBH*
62.7 92.0
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
N at ural
0- 2,000 ft. 2,000- 10,000 ft
[ 0- 610 m ] [ 610- 3,048 m ]
75 52
4,600 4,500
85 75
5,350 5,250
220 190
7,200 6,900
115 60
6,150 5,600
220 170
7,200 6,700
105
6,050
225
7,250
50
1,250
55
1,300
40
1,150
40
1,150
43 60
1,180 1,350
40 60
1,150 1,350
CO Lim it < 2 0 0 ppm
6 6
Dom est ic Hot Wat er ( DHW) Circuit
Min
Max I nput ,
I nput ,
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 ]
75
4,600
85
5,350
220
7,200
65
5,650
170
6,700
120
6,200
220
7,200
70
1,450
55
1,300
25
1,000
25
1,000
45
1,200
45
1,200
240013503 REV A, [ 03/ 15/ 2022]
* *
Max
Min Out put ,
Out put ,
MBH
MBH
100.2 15.3
122 19
157 23
143 20
120 17
2,000- 10,000 ft
[ 610- 3,048 m ]
52
4,600
75
5,250
190
6,900
40
5,400
150
6,500
60
1,350
60
1,350