EX 700 EX 850
CSA Input (Natural Gas or Propane) - MBH 70 - 700 85 - 850
CSA Input (Natural Gas or Propane) - kW 20.5 - 205 24.9 - 249
CSA Output - MBH 679 824.5
CSA Output - kW 199 241.6
Thermal Efficiency 97% 97%
Minimum gas supply pressure (Natural Gas or Propane) - inch w.c. 4 4
Maximum gas supply pressure (Natural Gas or Propane) - inch w.c. 14 14
Ambient temperature:
Low °F / °C
High °F / °C
32 / 0
122 / 50
32 / 0
122 / 50
Max. relative humidity (non-condensing) 90% 90%
Minimum water temp. °F / °C 34 / 1 34 / 1
Maximum water temp. (electronic hi-limit) °F / °C 190 / 88 190 / 88
Max. ΔT - supply/return (electronic fence) °F / °C 80 / 44 80 / 44
Max. Water Temperature Lockout Limit °F / °C 201 / 94 201 / 94
Power use (120Vac/60Hz) @ full fire - Watts (less pumps) 195 228
Weight (empty) - lbs/Kg Approx. 440 /
200
Approx. 520 /
236
Heating Surface Area - ft
2
/ m
2
84.6 / 7.86 99.88 / 9.28
Pressure vessel water content - USG/Liters 17.5 / 66.2 17.5 / 66.2
Maximum boiler flow rate - USgpm 100 100
Minimum boiler flow rate - USgpm 18 21
Maximum operating water pressure* - psig 160 160
Minimum water pressure - psig 8 8
Relief valve pressure (supplied) - psig* 50 50
Approved installation altitude - ASL 0 - 12,000' 0-12,000'
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