10
grounding screw to tie into the metal panel to assure the unit is
grounded, see Figure 23.
FIGURE 23
TANK ASSEMBLY SYSTEM
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.
FIGURE 25
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
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
Содержание ROOFTOP SRT80 120NE
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