2 - Ra T Ings And Ca Pa Cit Ies; Domestic Hot Water Specifications - UTICA BOILERS MAHF-75 Installation, Operation And Maintenance Manual

1 2 TECH N I CAL DATA
1 2 .1 Ra t ings a nd Ca pa cit y
Model
Num ber
MAHF- 75
MAHF- 100
MACF- 115
MAHF- 125
MACF- 150
MAHF- 165
MACF- 205
( 1) 1000 Bt u/ hr ( Brit ish Therm al Unit s Per Hour)
(2) Heating Capacity and AFUE (Annual Fuel Utilization Efficiency) are based on DOE (Department of Energy) test
procedures.
( 3) Net AHRI Rat ings based on piping and pickup allowance of 1.15. Cont act Technical Support before select ing boiler
for inst allat ions having unusual piping and pickup requirem ent s, such as int erm it t ent syst em operat ion, ext ensive piping
syst em s, et c.
* Max CH Supply t em p 176° F ( 80° C)

12.2 Domestic Hot Water Specifications

I t em
I nput Rat ings ( MBH)
Out put Rat ings
( MBH)
Dom est ic Wat er Pressure
Minim um Flow Rat e
Maxim um Flow Rat e
Flow Rat e 77° F ( 43° C) Tem p. Rise
DHW Supply Connect ion Size
Cold Wat er I nput Connect ion Size
* Max DHW t em p 140° F ( 60° C)
* * 1/ 2" Copper st ub adapt ers included wit h boiler
1 2 - RATI N GS AN D CAPACI TI ES
( 1)
CH I nput , MBH
Maxim um Minim um
75 16.6
93.5 16.6
93.5 16.6
125 22
125 22
164 29.5
164 29.5
Min
Max
Min
Max
Copper Sweat * *
( 1) ( 2) ( 1) ( 3)
CH Net AHRI
Heat ing Rat ing Wat er,
Capacity, MBH * MBH
68.2
85.4
85.4
113
113
153
153
MACF- 115 MACF- 150
16.6 22
115.5 153
15.3 19
105.5 136
2.9 psi ( 0.2 bar) - 116 psi ( 8.0 bar)
0.55 GPM
2.64 gpm 3.50 gpm
2.35 gpm 3.25 gpm
1/ 2" BSPT at 1/ 2" NPT
boiler or 1/ 2"
1/ 2" NPT
6 5
( 2)
AFUE%
60 92.0
74 95.0
74 95.0
98 95.0
98 95.0
133 95.0
133 95.0
MACF- 205
29.5
205
26
180
0.50 GPM
5.00 gpm
4.65 gpm
3/ 4" NPT
3/ 4" NPT
240013503 REV A, [ 03/ 15/ 2022]