Bock Water Heaters 541E - Manuals

– 2 – PERFORMANCE SPECIFICATIONS AND ROUGHING-IN DIMENSIONS Leave ample room for servicing when the water heater is in- stalled – do not block access to the burner, inspection door, handholes or controls. Leave room to pipe the unit and connect the fuel and electricity. CAUTION: The recommended wate...

– 3 – Care must be taken to insure an adequate air supply for the water heater. A. Install equipment only where the water heater will have satisfactory combustion, proper venting, and the maintenance of temperature at safe limits all around the unit under normal operating con- ditions. Free circulat...

– 4 – 2. Bock recommends a two-pipe (suction and return) system for these heaters. Use 1/2" O.D. soft cop- per tubing (5/8” O.D. soft copper on Sun Tec H pumps) and install a bypass plug on two-pipe system. (See instructions packed with pump.) Note: Do not install a bypass plug if using a gravit...