Fulton Pulse DWH (PDWH) Domestic Water Heater - Manual (Page 24)

to vent these locations. When only water is
discharged from all vents, the initial purging is
complete.
WARNING
Never leave an opened manual air vent
unattended. In the event an opened vent is
left unattended, water damage could occur.
f. Visually inspect all pipe joints and
equipment connections for leaks. If
necessary, drain system, repair leaks and
refill/purge the system. If no pressure drop is
detected for a period of two hours under
pressure, the system may be considered
water tight.
g. When purging is completed, make sure
the following are open—shutoff valve in cold
water fill line, and shutoff valve in return line.
h. Make sure the following are closed--all
drain cocks and all manual vents.
2. Open gas shutoff valve, allowing gas to
flow to water heater.
Installation
Glossary
1. Temperature/Pressure Indicator
2. Hot Water Outlet Stop Valve
3. Safety Valve
4. Combination Shutoff-Purge Valve
5. Stop Valve
6. Check Valve
7. Diaphragm Expansion Tan
8. Drain Valve
Piping Configuration for System Purge
(represents any heating load)
22-PDWH
Figure 15
Piping Configuration for System Purge (represents any heating load)