Section 5: Plumbing 3033-005B
5-6 Concordia Xpress Technical Support Manual
2900-300B
Temperature Probe
The CPU uses the temperature probe to monitor the water tank
temperature. The operating temperature of the tank is between 185-
205°F (85-96°C). The minimum measurable temperature of this device is
146°F (64°C), while the maximum is 257°F (125°C).
If the temperature is 146°F (64°C) or below, 146°F (64°C) will be
displayed.
If the temperature is 257°F (125°C) or above, 257°F (125°C) will
be displayed.
Pressure Relief Valve
175psi
The pressure relief valve functions as a safety relief valve.
If the pressure in the water tank exceeds 175psi, the pressure relief
valve opens to release excess pressure. A drain hose is routed from the
pressure relief valve to the drain tray.
High Temperature Limit Switch
210°F (99°C)
In the event that the water tank temperature exceeds 209°F (98°C), the
high temperature limit switch opens the control circuit to the solid state
relays and cuts the voltage to the heating elements. The high
temperature limit switch auto-resets, once the temperature cools, the
high temperature limit switch will reset, allowing the heater to be
activated.
Water Inlet
Water is supplied from the wall source to the hot water tank through the
water inlet fitting.
Viewing the hot water tank temperature
1. Navigate to CHK TEMPERATURES > BREW
WATER.
2. The tank temperature is displayed.