UTICA BOILERS MAC-115, Manual

Page: 8 / 139

4
Dimensions
PHYSICAL DATA
Central Heating (Sealed System)
100 / 115 / 125 / 150
/
165 / 205
Heat Exchanger Max Allowable Working Pressure 50 psi [3.45 bar]
Max System Pressure
43 psi [2.96 bar]
Min System Pressure 7.25 psi [ 0.50 bar]
Max System temperature
176°F [80°C]
Pressure Relief Valve Setting 30 psi [2.11 bar]
Expansion Tank Minimum Size
(pre-charge press.)
( 100 /115)
1.5 gal at 11.6 psi
[7.0 L at 0.8 bar]
(125/150/165/205)
2.2 gal at 11.6 psi [10.0 L at 0.8 bar]
Recommended System Pressure (cold) 21.7 psi [1.5 bar]
Domestic Hot Water
115 150 205
Max Inlet Water Pressure 116 psi [8 bar]
Min Inlet Water Pressure 2.9 psi [ 0.2 bar]
Min DHW Flow Rate 0.55 gpm [2.50 L/min]
Max DHW Temperature 140°F [60°C]
DHW Water Content (Domestic Hot Water Flat Plate Content) 0.035 gal [0.13 L] 0.053 gal [0.23L] 0.10 gal [0.37 L]
SYSTEM
When boiler is operating at maximum operating temperature, providing heating with all heat emitters operating, pressure gauge
should not indicate more than 26.11 psi / 1.80 bar. If reading exceeds this figure larger expansion tank is required.
DIMENSIONS
100 / 125 115 / 150 165 / 205
Height 30" [763 mm]
Width 17
3/4
" [450 mm]
Depth 13 9/16 " [345 mm] 21 1/2" [571 mm]
DIMENSIONS
Condensate Trap Connection
13/16" [21 mm]
ID Hose
3/4" [19.1 mm]
NPT
System Supply
3/4” [19.1 mm] 1” [25.4 mm]
DHW Outlet (100 & 125 Optional)
3/4” [19.1 mm]
Copper Sweat
1/2” [15.9 mm]
Copper Sweat
165-NA
205 - 3/4” [19.1 mm]
Gas Connection
3/4” [19.1 mm]
DHW (Cold Water) Inlet
N/A
1/2” [15.9 mm]
Copper Sweat
165 - N/A
205 - 3/4” [19.1 mm]
Boiler Return
3/4” [19.1 mm] Copper Sweat 1” [25.4 mm]
Boiler Filling Connection External to Boiler
Primary Water Content 0.95 gal [3.60 L] 1 gal [3.60 L] 1 1/4 gal [4.73 L]
B B
I
H
G
F
E
C
A
240013354 REV B [09/15/2021]
A
C