Centurion Water Heater- Edge [ii]: Install-Operation-Service
SECTION 2: INSTALLATION
OMM-0153_A
• 8/25/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 20 of 131
Figure 2-8: Dual Inlets
2.5.4 Sequencing Isolation Valve
If the CENTURION Water Heater was ordered for use with the Water Heater Management
(WHM) system, the unit will arrive with the actuator-controlled Sequencing Isolation Valve,
packed separately within the shipping container.
If installation is required, see Section 2.14: Sequencing Isolation Valve Installation. See Section
5.2.4:
Recommendations for WHM Operation
and SECTION 8:for more information on
implementing WHM.
NOTE:
Sequencing Isolation Valves are required in a multi-unit configuration.
2.6 TEMPERATURE AND PRESSURE RELIEF VALVE INSTALLATION
An ASME rated Temperature and Pressure Relief Valve is supplied with each CENTURION
Water Heater. The valve setpoint is 150 psig (1034 kPa) at 210°F (98.9°C). The relief valve is
installed on the hot water outlet of the Water Heater, as shown below. A suitable pipe joint
compound should be used on the threaded connections. Any excess should be wiped off to
avoid getting any joint compound into the valve body. No valve is allowed between the relief
valve and the heat exchanger.
The relief valve must be piped to
within 12 inches (30.5 cm)
of the floor to prevent injury in the
event of a discharge. No valves, restrictions, or other blockages are allowed in the full port
discharge line.
In multiple unit installations the discharge lines must
NOT
be manifolded together. Each must
be individually run to a suitable discharge location.
BUILDING RECIRCULATION
INLET (WARMER WATER)
COLD WATER INLET
(COOLER WATER)
