Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
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AERCO International, Inc.
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100 Oritani Dr.
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Blauvelt, NY 10913
OMM-0078_0J
PRI: 11/22/2013
Phone: 800-526-0288
GF-128
2.8 PRESSURE & TEMPERATURE RELIEF VALVE INSTALLATION
An ASME rated Pressure & Temperature (P&T) Relief Valve is supplied with each Innovation
Water Heater. With the exception of Alberta installations (see above Note), the valve setpoint is
150 psig/210°F. The P&T Relief Valve is installed on the hot water outlet at the top of the
Recirculation Loop Assembly as shown in Figure 2-5. 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 relief 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.
2.9 CONDENSATE DRAIN & PIPING
The Innovation Water Heater is designed to condense water vapor from the flue products.
Therefore, the installation must have provisions for suitable condensate drainage or collection.
The condensate drain port is located on the exhaust manifold at the rear of the unit (Figure 2-6).
This drain port must be connected to the Condensate Trap (part no. 24060) which is packed
separately within the unit’s shipping container. The Condensate Trap inlet and outlet
connections contain tapped 3/4” NPT ports.
PARTIAL REAR VIEW
Figure 2-6. Condensate Drain Connection Location
A sample Condensate Trap installation is shown in Figure 2-7. However, the actual installation
details for the trap will vary depending on the available clearances, housekeeping pad height/
dimensions and other prevailing conditions at the site. The following general guidelines must be
observed to ensure proper condensate drainage:
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The condensate trap inlet (Figure 2-7) must be level with, or lower than the exhaust
manifold drain port.
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The base of the condensate trap must be supported to ensure that it is level (horizontal).
COLD WATER
INLET 2” NPT
DRAIN VALVE
AIR INLET
EXHAUST MANIFOLD
CONDENSATE DRAIN
CONNECTION (3/4” NPT)
