Step 7. Remove the caps from the quick-disconnect coupling for the fuel supply end return lines in the
skid assembly base. Connect the fuel supply ad return hose quick-disconnect coupling halves (Figure
32) to the connectors. Pull on the connected hoses to make certain they are securely fastened.
NOTE: Make certain that the voltage regulator switch (located by the heater receptacle) is in the OFF
Step 8. Remove the electrical power cable from the storage compartment. Remove the cap from the
voltage regulator socket receptacle (heater receptacle) on the control panel of the pump unit assembly.
Connect the free end of the power cable to the socket receptacle. Make certain that the power cable is
Step 9. Turn the handle of valve 1 until it is fully closed. This closes off the lower manifold from the
upper manifold, thus water is routed from the pump into the lower manifold and out through the lower
discharge piping to the M2 water heater and back through the upper discharge piping into the upper
Step 10. Make certain valve 2 or 3 is open.
Step 11. Open the tank drain valve.
The unit should now be correctly configured to heat water (Figure 33).