Sizing – ThermElect Commercial Furnaces
Thermal Output Graphs – Hydronic Furnace
The size and quantity of units needed to satisfy your heating requirements will depend upon the application and how the system is being used. The thermal load and the demand profile of the facility will affect the heating capability of the furnaces. The daily rate structure of the utility can also affect the size of furnace needed. The thermal output graphs can be used to determine actual system output over time.
Thermal Output Graphs – Forced Air Furnace
The maximum discharge air temperature of the ThermElect commercial forced air furnace is 150oF (66oC). Actual system output is based on the difference between the inlet air temperature and the outlet temperature. The temperature rise chart can be used to determine the maximum temperature rise and actual system output.
Temperature Rise Matrix – Forced Air Furnace
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30
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55º F / 12.8º C
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37º F / 2.8º C
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35
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64º F / 17.8º C
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43º F / 6.1º C
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40
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74º F / 23.3º C
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49º F / 9.4º C
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45
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83º F / 28.3º C
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55º F / 12.8º C
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50
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92º F / 33.3º C
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62º F / 16.7º C
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55
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101º F / 38.3º C
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68º F / 20º C
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60
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110º F / 43.3º C
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74º F / 23.3º C
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65
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120º F / 48.9º C
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80º F / 26.7º C
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70
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129º F / 53.9º C
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86º F / 30º C
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75
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138º F / 58.9º C
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93º F / 33.3º C
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80
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147º F / 63.9º C
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98º F / 36.7º C
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If you are sizing a system to provide space heating under a fixed, daily control cycle, refer to the Sizing Table for information on the amount of heat loss each heater model can satisfy under a sampling of various specific off-peak hour control strategies. Simply select the heater model that will satisfy your heating requirements based on the corresponding off-peak hours. For maximum heating abilities of the furnaces under control strategies that may not be listed, contact Steffes.
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