Specifications

September 2012 Page
17
• No shuto valve shall be installed between the relief valve and boiler, or in the discharge line. Do not plug or
place any obstruction in the discharge line.
• Test the operation of the valve after  lling and pressurizing system by lifting the lever. Ensure the valve
discharges freely. If the valve fails to operate correctly, replace it with a new relief valve.
WIRE HANDLES (4)
Turn the wire handles on to the levers in a clockwise direction.
LOW WATER CUT OFF (IF REQUIRED)
Some State and Local Codes and some Insurance Companies require a Low Water Cut O device (LWCO)
when the heat source is installed above radiation. If required, the LWCO must be installed at a high point in the
system, in a Tee near the top of the boiler.
AUTOMATIC FILL VALVES
These devices help maintain water volume in the advent that the relief valve has a discharge event. It is more dif-
 cult to recognize a leak in a system with a valve continuously making up lost water. If an auto  ll valve is installed,
it is recommended that a routine system check for leaks be established. Also careful monitoring of the relief valve
discharge area should be conducted.
If a feed water line and valve are incorporated, a back  ow preventer is required to preclude
heating system water from entering the domestic system.
INSTALLATION: ELECTRICALS BASIC ELECTRICALS
For your safety, turn o electrical power supply at service entrance panel before making any electrical
connections to avoid electric shock hazard. Failure to do so can cause severe personal injury or death.
Ensure power is shut o while making connections. Failure to do so may result in
severe personal injury or death.
To ensure that the appliance always has  ow when operating, it is recommended that the pump
and the appliance receive power from the same breaker. This is most important if the pump is
located remote from the appliance in the structure being heated. DO NOT apply power to the
pump until system has been  lled. The pump is water cooled and must never be run dry due to
risk of damage from overheating.
WARNING
DANGER
WARNING
PRESSURE RELIEF VALVE (#3) (CONT.)