User Manual

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
OMM-0103_0A AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 25 of 178
GF-147 Phone: [phone] PRI: 10/28/2014
NOTE
The maximum working pressure for installations within the
Province of Alberta is 87 psig. Therefore, a pressure &
temperature relief valve with a setting of 75 psig/190°F is supplied
with Alberta shipments.
2.8 PRESSURE & TEMPERATURE RELIEF VALVE INSTALLATION
An ASME rated Pressure & Temperature (P&T) Relief Valve is supplied with each RECON
Water Heater. With the exception of Alberta installations (see above Note), the valve setpoint is
150 psig/190°F. The P&T Relief Valve and supply manifold are installed on the hot water outlet,
as shown in Figure 2-7. A suitable pipe joint compound should be used on the threaded
connections. Any excess should be wiped off to avoid getting any into the valve body. The P&T
valve should be piped to within 12 inches of the floor to prevent injury in the event of a
discharge. The relief outlet piping must be equal to the outlet size of the relief valve without
reduction. No valves, restrictions, or other blockages are allowed in the discharge line. In
multiple unit installations the discharge lines must NOT be manifolded together; each must be
individually run to a suitable discharge location.
Figure 2-7: Pressure and Temperature (P&T) Relief Valve
P&T RELIEF VALVE
HOT WATER OUTLET