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Part Number PLUS-E017-A/1206
PLUS LINE
Indirect-Fired Water Heaters – Series 3
Water heater piping continuedA2
Figure 3
Piping — OPTION 2
Models 30/40/60/80 or
Plus 40/60/80
(Required for Commonwealth of
Massachusetts)
Drain valve
GOLD Plus 30/40/60/80
or Plus 40/60/80
Option 2
Apply the following and Figure 3 to water heaters installed in Massachusetts. The drain valve
is mounted in the AUX tapping on top of the water heater.
1. Insert a close nipple and then an open-ended “draining” dip tube into the AUX tapping
on top of the heater.
2. Connect a ¾” NPT elbow to the AUX tapping, using suitable pipe dope or tape.
3. Pipe the drain valve (supplied with water heater) to the elbow, using suitable pipe dope or
tape, as shown in Figure 3.
4. Pipe the T & P relief valve in the run of the ¾” NPT brass tee (supplied with heater), located
in the domestic water outlet piping as shown in Figure 3.
An expansion tank may be required on
the DHW piping. See Thermal expan-
sion WARNING on page 13. Failure to
comply could result in severe personal
injury, death or substantial property
damage.
When the water supply pressure is higher than 70 psig, install a pressure-reducing valve on the cold water supply
line to prevent leakage from the T & P relief valve.