Lochinvar CH 100 CE, Installation, Commissioning, User & Maintenance Instructions

Page: 15 / 66

Instruction manual CH 15
gis
2.5.3 T&P valve
A T&P valve is only mandatory in an unvented installation. However,
the supplier
also recommends the use of a T&P valve in vented installations.
A T&P (Temperature and Pressure Relief) valve monitors the pressure in the
tank and the water temperature at the top of the tank. If the pressure in the tank
becomes excessive (> 10 bar) or the water temperature is too high (> 97°C), the
valve will open. The hot water can now flow out of the tank. Because the
appliance is under water supply pressure, cold water will automatically flow into
the tank. The valve remains open until the unsafe situation has been rectified.
The appliance is fitted standard with a connecting point for a T&P
valve
(3.6.3 "Hot water side") .