TM 10-6640-238-13 5-34 INSTALL Install Electric Steam Boiler.  See Figure 5-12. a. Install wiring as tagged, conduit and junction boxes onto back of boiler.  Remove tags. b. Apply teflon tape to male fittings.  Be sure to wrap tape in same direction as pipe thread. c. Install pipe fittings, drain valve (6) and safety valve (10) on electric steam boiler (4). WARNING To prevent injury, two personnel are required to install electric steam  boiler.    Boiler  is very heavy. d. Position electric steam boiler (4) in mechanical room. e. Install four bolts (7), lockwashers (8), and washers (9). f. Connect pipe union (5) at drain valve (6). g. Connect two pipe unions (3) located on top of electric steam boiler (4). h. Open access door (1) and connect power input electrical wiring as tagged and conduit.  Remove tags. i. Close drain valve (6). j. Install electric steam boiler low water pump (paragraph 5-15). k.     Install electric steam boiler low water cutoff pump control (paragraph 5-14). l. Open water feed boiler valve located on equipment wall. m.   At Power Panel No. 2, set circuit breaker A15CB5 to ON. n. Prepare and operate water system using internal water tank as source in accordance with procedures listed in paragraph 2-6j. o. Inspect for leaks and check for proper operation.