15
OVERFLOW LINE CONNECTION
For ease of installation, the protective cap can be taken o by removing the 2 screws.
We recommend the use of CPVC for the overflow line.
DO NOT over-tighten the connector. The applied torque shall not exceed 2 lb.ft. Make sure the overflow
line opening is at least 6’’ from the ground.
WARNING! In any case, water shall be fully drained to a suitable floor open drain. Respect the correct
slope so that no water can be trapped in the overflow line.
WARNING! Use a ¾’’ MNPT fitting compliant with ASTM D2846 or ASME B16.22 or other standard,
and ensure an inner diameter not less than ⁄’’ (0.625’’).
WARNING! The overflow line piping shall have an inner diameter not less than ¾’’.
WARNING! The protective cap is to be reinstalled after connection of the overflow line.
NOTICE: The overflow line connection is non-pressurized. Using glue for line connection is NOT
recommended as the unit fitting can be damaged in case of future operation on the line.
T/P VALVE
Unlike other tank water heaters, the water in the tank of the Essency EXR is at atmospheric pressure. Per
its construction, UL has evaluated that this water heater does not need a T/P valve. However please refer to
your local codes for specific local requirements.
EXPANSION TANK
This water heater operates at atmospheric pressure. No expansion tank is therefore required. However
please refer to your local codes for specific local requirements.
Electrical junction box
(Use only copper conductor)
Hot water outlet
to fixture
Shuto valve
Union
Union
Touchscreen
Upper element access panel
To electric distribution panel
To cold water supply
Shuto valve
Overflow line to suitable
open drain
Thermal expansion tank
(if required)
TP valve
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