Xylem Bell & Gossett ecocirc XL Series Instruction Manual page 7

4 Installation
Nominal Suction Fluid tempera-
Diameter ture 77°F (25°C)
3" 7.5 PSI
NOTICE:
• Ensure that the suction pressure is never below the values specified
above, as this could cause cavitation and damage the pump.
• The inlet pressure plus the pump pressure against a closed valve
must be lower than maximum admissible system pressure.
4.3.3 De-rating table
The following table indicates percent decrease in input power draw,
with the increase in temperature of circulating water and the ambient.
Ambient
temperature
-10
32°F–77°F 100%
(0°C–25°C)
86°F (30°C) 100%
104°F (40°C) 100%
4.3.4 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 regula-
tions 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 hang-
ers 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 posi-
tion. 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.
4.4 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.
Electrical connection checklist
Check that the following requirements are met:
• The electrical wires are protected from high temperature and vibra-
tion.
• The current type and power supply voltage connection must corre-
spond to the specifications on the name plate on the pump.
• Use wires at least 14 AWG to supply power to the pump. Follow all
local and NEC wiring codes and practices.
6
Fluid tempera- Fluid tempera-
ture 203°F ture 230°F
(95°C) (110°C)
19 PSI 28 PSI
Fluid Temperature (°C)
60 95
100% 100%
100% 80%
100% 70%
The electrical control panel checklist
NOTICE:
The electrical supply must match the electrical rating of the pump. Im-
proper combination could fail to guarantee protection of the unit.
Check that the following requirements are met:
• The control panel circuit breaker is sized properly to protect the
pump against short-circuit.
• Both single and 3–phase pumps have built in overload and thermal
protection, no additional overload protection is required.
The motor checklist
Electrical supply and grounding wires must be suitable for at least
194°F (90°C).
4.5 Pump installation
1. Install the pump according to the liquid flow direction.
110
– The arrow on the pump housing shows the flow direction
100%
through the pump body.
– The pump must be installed with the motor in a horizontal posi-
tion. For more information about allowed positions, refer to the
70%
following image:
55%
Figure 1: Allowed pump installation
2. If necessary, rotate the position of the motor for better visibility of
the user interface.
Section 4.6 below describes the procedure of changing of motor
orientation.
3. If applicable, install the thermal insulation shells.
– Only use the pump thermal shells that are included in the deliv-
ery. Do not insulate the motor housing, the electronics can over-
heat and cause the pump to thermally overload.
– The thermal shells that are included with the pump must only be
used in hot water circulation applications with fluid temperature
above 68°F (20°C). The thermal shells are permeable to water
vapor.
– If the customer installs vapor barrier insulation for cold water ap-
plication, then the pump housing must not be insulated above
the motor flange. The drain opening must be kept unobstructed
in order that the accumulated condensation can run out.
NOTICE:
Improper installations shown above can cause the pump to fail prema-
turely and create an electrical hazard and/or damage caused by water
leakage.
ecocirc ® XL INSTRUCTION MANUAL