AUX EL Series Instruções de Operação descarregar pdf (Página 12)

09/11/2014 10 NI401

To Earth Loop

From Earth Loop

From

Flush

Cart

Flush

Cart

Step 3

From Heat Pump

To Heat Pump

Step 5

Flush

Cart

From

Flush

Cart

From Heat Pump

To Heat Pump

To Earth Loop

From Earth Loop

Step 6B

From Heat Pump

To Heat Pump

Step 6A

From

Flush

Cart

Pressurize Loop

Flushing and Filling the System Using 3-Way Valves

Step 1

Use water and a high volume head circulator pump to flush air and debris and to fill the loop system.

• Refer to recommendations provided by IGSHPA or CGC when choosing a pump for the flushing process.

• It is recommended that pump suction be from the bottom of a large volume container. Use a suction line

strainer to prevent debris discharged into the container from being recycled to the system.

Step 2

Pump water into the system by connecting the pump discharge hose to one (not both) of the 1.00” NPT water

connections located on the sides of the module. Connect a return hose to the opposite side of the module to

discharge debris and air as water is added to the loop.

Step 3

Rotate the module valves as shown in step 3 diagram:

Step 4

Start the pump. Add anti-freeze and water to the container as needed so that no air enters the system. This will

push any air out of the loop. If flushing assembly is equipped with valves to reverse flow direction, do so

occasionally to help remove trapped air. When bubbles cease in the return hose container, the earth loop has

been completely flushed.

Step 5

Flush the heat pump. Rotate the valves as shown in step 5

diagram while the pump is running. Flush the heat pump

using the same procedure as used to flush the earth loop.

Pressurizing the System (does not apply to Figure 5)

Step 6

After flushing and filling the system, rotate the module valve

discharging into the flush container as shown in step 6A

diagram to pressurize the loop. Then turn the valves as in step

6B.

Step 7

Turn off the flush cart pump. The system should remain

pressurized. Release excess pressure by rotating either

module valve to allow a small amount of water to pass

through and out of the system and into the container. Some

initial loss of pressure can be expected and is due to the

expansion of the earth loop pipe under pressure. The pressure

will stabilize if the system has no leaks.

Step 8

Flushing, filling and pressurization should be complete. Start

the loop pump module circulators.

Step 9

Troubleshoot. If for some reason the circulators are not

operating, power off and diagnose the problem.

Step 10

Using a single water pressure gauge, measure the pressure

drop at the pressure/temperature plugs across the heat pump

heat exchanger. Compare the measurement with the flow

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 55 56

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AUX EL Series Instruções de Operação Página 12

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