VC Series Manual
3
7
Isolation Valves and Pressure Relief Valve
Pressure Relief Valve (PRV) Installation Instructions:
The PRV must be connected to the
3/4”
threaded port on the HOT (RED) water service valve (will be adjacent to
or above the shut off, never below). Installation must maintain a ¾
”
port size with no shut off valve or line
restriction in
-
between the appliance and the PRV. The discharge line from the PRV should pitch downward and
terminate
6”
above drains where discharge will be clearly visible. The discharge end of the line shall be plain
(
unthreaded
) and a minimum of ¾
”
in diameter. The discharge line material must be suitable for water at least
180° Fahrenheit. No valve of any type may be installed in the discharge line of the pressure relief valve.
Pressure Relief Valve Maintenance:
For proper care of this approved pressure relief valve, it is recommended that the valve is manually operated
once a year. In doing so, it will be necessary to take precautions with regard to the discharge of potentially
scalding hot water under pressure. Ensure discharge water has a safe place to flow. Contact with your body or
other property may cause damage or harm.
Please note that only the PRV in this package is certified by CSA International as an approved item.
The isolation valves provide the ability to isolate the water heater from the structure
’
s plumbing and allow quick
access to flush the heat exchanger. Check with local codes to determine if a pressure and temperature relief
valve is required. The included valves meet
American National Standard (ANSI Z21.10.3) / Canadian Standard
(CSA 4.3)
and are ANSI/NSF 61 approved for potable water.
Isolation Valves Installation Instructions:
1. Wrap the threaded end of the approved pressure relief valve with a minimum of 5 wraps of Teflon® tape.
2. Install the pressure relief valve to the
3/4”
threaded port on the HOT (RED) water service valve (will be
adjacent to or above the cut off, never below). See Pressure Relief Valve Section for proper installation
requirements.
3. Position the Hot Isolation Valve (Red) below the Hot Outlet side of the water heater.
4. Hand tighten the Swivel Nut of the Hot Isolation Valve (Red) to the Hot Outlet side of the water heater.
5. Rotate the Drain Valve to an accessible position. With a wrench, tighten the Swivel Nut to the water heater.
6. Repeat steps 3
-
5 for the Cold Isolation Valve (Blue).
7. Connect the Cold Isolation Valve (Blue) to the Cold Water Supply Line.
8. Connect the Hot Isolation Valve (Red) to the Hot Water Supply Line.
9. Ensure that both Drain Valves are in the closed position before turning on water supply.
Cold Inlet
Swivel Nut (Integrated Gasket)
Drain Valve
Cold Isolation Valve
(Blue)
Hot Isolation Valve
(Red)
Hot Outlet
Pressure
Relief Valve
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