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INSTALLATION AND OPERATING INSTRUCTIONS
SFC COMBI BOILERS SFC-99, SFC-125
SPECIFICATION SFC 99 SFC 125
CSA Input (Natural Gas or Propane) – MBH 15.5 - 99 16.5 - 99
CSA Input (Natural Gas or Propane) – KW 4.54 - 29.0 4.84 - 29.0
CSA Output – MBH 14.8 - 88.9 15.8 - 88.9
CSA Output - KW 4.34 - 26.0 4.63 - 26.0
DHW - CSA Input (Natural Gas or Propane) - MBH 15.5 - 99 16.5 - 125
DHW - CSA Input (Natural Gas or Propane) - KW 4.54 - 29.0 4.84 - 36.6
A.F.U.E 96% 95%
Min Gas Pressure (Nat. Gas or Propane) – inch w.c. 4
Max Gas Pressure (Nat. Gas or Propane) – inch w.c. 14
Power (120Vac/60Hz) - Watts @ full re with internal pump 120
Weight (empty) – lbs/Kg 85 / 39
Pressure Vessel water content – USG/Liters 0.5 / 1.9
Max boiler ow rate - USgpm 10
Min boiler ow rate - USgpm 2
Max Operating Pressure – Space Heating Coil - psig † 43.5
Max Operating Pressure – Domestic Hot Water Coil - psig 150
Minimum water pressure - psig
8
Approved installation altitude - ASL 10,000 ft
Ambient Temperature – Low (°F/°C) 32 / 0
Ambient Temperature – High (°F/°C) 122 / 50
Max relative humidity (non-condensing) 90%
Min water Temperature - Space Heating (°F/°C) 50 / 10
Max water Temperature – Space Heating (°F/°C) 194 / 90
Min water Temperature – Domestic Hot Water (°F/°C) 104 / 40
Max water Temperature – Domestic Hot Water (°F/°C) 149 / 65
Min ow rate to activate DHW heating - USgpm 0.5
Max ow rate DHW heating - USgpm 4.0
Max equivalent vent length 3" (each side) 120'
Max equivalent vent length 2" (each side) 35'
* Natural Gas units require a Propane conversion kit included with unit (see page #3-2, Table 11). Propane (LP) units require a Natural Gas conversion kit (see page
#3-2, Table 11) to be ordered separately if converting a Propane unit to Natural Gas.
† units are shipped with 30 psig pressure relief valve
SPECIFICATIONS
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