Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. Chapter 5 Measurement 95 Chapter Name __________________________________ Date _____________ Class _____________ Capacity Measurement Exercises When a hydronic heating system is fi lled d with water, a water meter may be used to record the amount of water the system contains. This information is valuable to the technician when water treatment chemicals are added to the system. If no water meter is installed on the make-u line that fi lls the system, the water capacity can be calculated by the use of capacity charts. Use the chart shown here to answer the following questions. Copper Pipe Capacity Nominal Pipe Size (in) Water Content (gallons per foot) Type K Type L Type M 0.0016 0.0016 0.0014 1/8 1/4 0.0039 0.004 0.0043 0.0075 0.0083 0.0066 3/8 1/2 0.0113 0.0121 0.0132 0.0181 0.0194 0.0173 5/8 3/4 0.0226 0.0251 0.0268 0.0429 0.0454 0.0404 1 Goodheart-Willcox Publisher Use the system drawings of the Offices of Nicholas Brent, MD and the fi answers to the questions in the earlier Lin near Measurement Exercises to answer the questions below. Round all answers to the next highest gallon. Additional notes: ▪ Fin-tube radiation units have 3/4″ T pe L tubing running the length of the unit. ▪ Unit heaters have a water capacity of 0.5 gal. Exercise 5-3 1. How much water will Zone 1 hold? __________ gallons (Continued)