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Heat Loss Express
Performing Heat Loss Calculations
When working on a new project, the first step is to create a new job as follows:
1. In the Heat Loss Express toolbar, click on the plus (+) icon in
Jobs. The Units of Measure dialog box is displayed. U.S.
Standard is automatically selected.
Units of Measure
2. Keep U.S. Standard or click on S.I. Metric. Click OK. The
Create New Job screen is displayed.
Create New Job Screen
Note the following:
Indoor Temp.is the minimum indoor temperature (
o
F) to be maintained by the heating system. •
• You must determine the correct Outdoor Temp. (
o
F) and Altitude (Ft.) for use in boiler selection
for the job’s geographical location. Outdoor design temperature data is available from the
Hydronic Institute Division of GAMA in their H-22 Heat Loss Guide. Visit the I=B=R
publications page on their website at http://www.gamanet.org/publist/hydroordr.htm
to order a
copy of H-22.
The system will automatically enter 180 (
o
F) as the default value for System Design Water
Temp. This can be changed if required.
•
New Room Screen
3. Enter all of the required data then click OK. The New Room
screen is displayed.
8 Slant/Fin Corporation