TM 10-6640-238-13 5-20 INSTALL Install Water Heater.  See Figure 5-7. a. Connect conduit (7) and wiring as tagged to water heater (1).  Remove tags. b. Install two threaded pipe adapters (12) and relief valve (11) on water heater (1). c. Position water heater (1) on mounting supports (10) and secure with two screws (8) and lockwashers (9) in each of four mounting supports (10). d. At junction box (6) in cabinet U, connect wiring as tagged and conduit (7).  Remove tags. e. Apply teflon tape to male fittings.  Be sure to wrap tape in same direction as pipe thread. f. Connect water heater outlet line union (3). g. Connect water heater inlet line union (4). h. Connect water heater relief valve union (5). i. Close hot water faucet and water heater drain valve (2). j. Install shelf in cabinet U. k. Set water heater circuit breaker A1CB17 to ON. l. Prepare and operate water system using internal water tank as source in accordance with procedures listed in paragraph 2-6j. m.   Inspect for leaks and check for proper operation. n. Install water bath (Paragraph 4-75). o. Install grease working machine (Paragraph 4-75). p. Install hot plate (Paragraph 4-75).