ACV Smart ME 200 Installation, Operation And Maintenance Instructions, For The User And The Installer

en21Smart ME : A1003499 - 661Y2000 • CENFRNLESITDEPLRUTECHNICAL CHARACTERISTICSWorked example of discharge pipe sizingFigure on the left shows a G1/2 temperature relief valve with a discharge pipe (D2) having 4 No. elbowsand length of 7m from the tundish to the point of discharge.From Table:Maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from a G1/2temperature relief valve is 9.0m.• Subtract the resistance for 4 No. 22mm elbows at 0.8m each = 3.2m• Therefore the permitted length equates to: 5.8m• 5.8m is less than the actual length of 7m therefore calculates the next largest size.Maximum resistance allowed for a straight length of 28mm pipe (D2) from a G1/2 temperature reliefvalves equates to 18m.• Subtract the resistance of 4 No. 28mm elbows at 1.0m each = 4.0m• Therefore the maximum permitted length equates to: 14m• As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.Essential recommendations for safety• The temperature/pressure relief valve should only be replaced by a competentperson.• No control or safety valves should be tampered with or used for any other purpose.• The discharge pipe should not be blocked or used for any other purpose.• The tundish should not be located adjacent to any electrical components