Bell and Gossett ecocirc 19-16, Инструкция по эксплуатации

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4.2 Piping requirements
Precautions
CAUTION:
• Use pipes suited to the maximum working pressure of the
pump. Failure to do so can cause the system to rupture, with
the risk of injury.
• Make sure that all connections are performed by qualified
installation technicians and in compliance with the
regulations in force.
• Do not use a shut-off valve on the discharge side in the
closed position for more than a few seconds. If the pump
must operate with the discharge side closed for more than a
few seconds, a bypass circuit must be installed to prevent
overheating of the water inside the pump.
Piping checklist
• Pipes and valves must be correctly sized.
• Pipe work must not transmit any load or torque to pump flanges.
• Be sure to minimize any pipe-strain on the pump:
– Support suction and discharge piping by the use of pipe hangers near
the pump.
– Line up the vertical and horizontal piping so that the bolt-holes in the
pump flanges match the bolt-holes in the pipe flanges.
– Do not attempt to spring the suction or discharge lines in position. This
may result in unwanted stress in the pump body, flange connections and
piping.
– The code for pressure piping (ANSI B31.1) lists many types of supports
available for various applications.
Install the check valve
The discharge nozzle is machined to accept a 1” Noryl check valve. If a check
valve is required for installation follow these steps:
1. Insert the O-ring end of the check valve into the discharge port of the pump
body.
2. Hand press the check valve body into place until it snaps into position.
The check valve will be shipped loose with each pump for field installation.
Once it is installed, it cannot be removed without damage.
See
Figure 5: Parts on page 23 for proper installation of the check valve.
4.3 Electrical requirements
• The NEC, CEC and local codes must be followed at all times. If a branch
circuit is fitted with ground fault circuit breaker, ensure that the circuit
breaker is suitable for use with inverter-driven appliances.
4 Installation
14 ecocirc ® 19-16 INSTRUCTION MANUAL