Trane EXWA, WPWD, GSWD manual Installation, System Pressurization

Installation

Filling the Loop Pump Kit System Once the loop, pump module and unit are fully connected, the system will need to be filled with water or water/ antifreeze solution. See Page 14 for an- tifreeze/water mixture by volume.

Fill both sides of the outside portion of the loop first via the pump module. The hose kit and unit should be filled last after purging of the ground loop is complete.

To fill the outside loop; (1) attach a water hose to the 1-inch FPT brass valve ports located on the front of the pump module (the caps at the front of the module should be removed). (2) Rotate both valve 1 and valve 2 to the "Position B" to prevent water from go- ing to the unit. (3) Turn on the water and allow the earth loop to slowly fill with water. (4) Run the water until a steady flow of water without air bub- bles is observed coming out of the dis- charge hose.

To fill the hose kit and unit; (1) Re- position valve 1 to the "Position A" to fill the unit and hose kit. (2) Turn the water on and allow the hose kit and unit to be filled slowly with water. (3) Run the water until a steady flow of water without air bubbles is observed coming out of the discharge hose.

System Pressurization

(1)Rotate both valves 1 and 2 to the "Position D" to pressurize the system.

(2)Examine all internal unit fittings or connections for leaks. (3) After check- ing for leaks, the system is ready to be flushed.

Note: There may be a certain amount of entrained air left in the loop system.

Cleaning and Flushing

the Water Loop

Filling the Hose Kit and Unit and/or

Hose Kit and Unit Flush

Run System

normally suitable for jobs up to six tons. The loop must be flushed with a high volume of water at a minimum velocity of (2 feet per second) in both directions. See Table 3 for flow rates required to flush earth loops.

Table 3: System flushing flow rates

Filling the Outside Loop and/or

Outside Loop Flush

Full System Flush

Note: The plastic 1-inch MPT valve plugs must be replaced after filling and/or flushing is completed.

See "Position C" for valve rotation to place the valves in RUN position.

All installations must be thoroughly flushed to remove air and dirt from the earth loop before running the system. The pumps used in the pump module are not adequate to use for the flush- ing out of the unit. A secondary pump capable of delivering 50 gpm at 60 feet of head (a 1 1/2 hp or larger pump) is

Pipe

3/4" PE

1" PE

1 1/4" PE

1 1/2" PE

2" PE

Gallons per

100 Ft.

3.02

4.73

7.55

9.93

15.36

Minimum Flush GPM

3.8

6.0

9.5

13.0

21.0

WSHP-SVX02A-EN 15