Weil-McLain PLUS-E017-A/1206 manual A2 Water heater pipingcontinued, Drain valve

PLUS LINE  Indirect-Fired Water Heaters – Series 3

A2 Water heater piping   continued

Figure 5

Piping — OPTION 2

PLUS 100/110/119

(Required for Commonwealth of Massachusetts)

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.

Drain valve

PLUS 100/110/119 Option 2

Apply the following and Figure 5 to water heaters installed in Massachusetts. The drain valve is mounted in the AUX tapping on top of the water heater.

1.Insert an open-ended “draining” dip tube into the AUX tapping on top of the heater.

2.Connect a elbow to the AUX tapping, using suitable pipe dope or tape.

3.Pipe the drain valve to the elbow, using suitable pipe dope or tape, as shown in Figure 5.

4.Pipe the T & P relief valve in the run of the brass tee, located in the domestic water outlet piping as shown in Figure 5.

5.Obtain brass tee and drain valve from local supplier.

12 Part Number PLUS-E017-A/1206