Fulton Pulse DWH (PDWH) Domestic Water Heater - Manual (Page 13)

Installing Water Heater
Trim
1. Each water heater is supplied with a
safety relief valve sized in accordance
with ASME requirements.The safety
relief valve shall be connected to the
coupling located in the top of the water
heater (Figure 3a). The safety relief
valve must be installed with a 6" nipple
between the water heater and the safety
valve. The safety relief valve must
always be installed in the vertical
position. The discharge pipe shall be not
less than the full area of the valve outlet.
The discharge pipe shall be as short
and straight as possible and so
arranged as to avoid undue stress on
the valve.
CAUTION
The discharge from safety relief valve
shall be so arranged that there will be no
danger of scalding of personnel. When
the safety relief valve discharge is piped
away from the water heater to the point
of discharge, there shall be provisions
made for properly draining the piping.
WARNING
No shutoff of any kind shall be placed
between the safety relief valve and the
water heater or on the discharge pipe
between such valve and the
atmosphere. Doing so can cause an
accidental explosion from overpressure.
2. Each water heater is supplied with a
pressure-temperature gauge. A nipple is
installed in the water heater water outlet. A
tee is installed on the nipple. In the side
port of the tee the temperature gauge is
installed.
Installing Water Piping
1. The bottom connection to the water
heater is the INLET and must be used
for the return from the system.
2. The top connection on the water
heater is the OUTLET and must be
connected as the supply to the system.
3. Connect hot water supply to heating
system feed line.
4. Connect expansion tank.
5. Connect cold water supply to water
heater inlet connection.
6. Install expansion tank
7. Clearence from hot water pipes to
combustibles must be at least 6”.
8. The water heater is furnished with a
probe type low water cutoff. No field
piping is required. If the probe does not
sense water, the water heater will shut
down and a red indicator will be
illuminated on the control panel.
9. The water heater is not provided with
external drain connections. A drain
valve must be installed near the inlet
connection to the water heater and
piped to a suitable floor drain.
10. Before filling the water heater clean
and flush the system to remove any
debris. Clean and flush old piping
thoroughly before installing the water
heater. Consider installing a strainer
ahead of the water heater.
Installation
Figure 3a
11-PDWH