Tank Assembly System

LOW WATER CUTOFF BOARD AND PROBE

The Low Water Cutoff Board and Probe monitors the water level to confirm the tank is completely full. This function is very important when the unit is first filled with water and when complete loss of power is encountered during freezing temperatures (in case the unit drains while using the anti-freeze kit), see Figure 20.

FIGURE 20

THERMOSTAT/E.C.O. PROBES

The Outback utilizes a two probe system. The upper probe located on top of the unit toward the back of the cabinet consists of a thermostat and E.C.O. The thermostat monitors the top temperature in the tank. The E.C.O. high limit switch interrupts the main burner gas flow should the water temperature reach approximately 205°F. The lower probe measures the water temperature in the lower half of the tank assembly.

FIGURE 21

grounding screw to tie into the metal panel to assure the unit is grounded, see Figure 23.

FIGURE 23

The Tank Assembly is an 80 gallon unit with a U-shaped heat exchanger. It incorporates two inlet tubes to control flow inside the tank. The heat exchanger is equipped with a stainless steel baffle which is non-removable. The working pressure is 150 psi, see Figure 24.

FIGURE 24

TANK INSULATION

The tank assembly is wrapped in foam insulation sealed inside a round jacket. The ends of the tank consist of high temperature fiberglass insulation and foam dams to prevent foam leakage, see Figure 25.

TRANSFORMER

The control system utilizes a 120/24 VAC step down transformer. Most of the control system utilizes 24 VAC for operation. See wiring diagram for those components utilizing 24 VAC and 120 VAC, see Figure 22.

FIGURE 22

JUNCTION BOX

The junction box is where the 120 VAC is supplied to the unit and
tied into the rest of the controls. The junction box provides a	FIGURE 25