Trane SCXG-SVX01B-EN manual Waterside Economizer Installation Procedure, pre-startup

pre-startup

Installation requirements

Waterside Economizer

Installation Procedure

1.Loosen and pull all end devices that go throught the bushing on the filter rack (upper right corner of rack).

2.Remove the filter rack from the back of

the unit by removing the 1/4” hex head screws from the top and bottom of the filter rack assembly.The filter rack assembly will hang on the unit when the screws are removed. Remove the filter rack by lifting it up off the unit.

3.Remove the economizer from the crate and position it behind the unit with the headers on the left side, when facing the back of the unit. Remove the plastic envelope that is taped to the economizer box assembly.This envelope contains the gasket that must be installed onto the vertical side flanges of the box.

4.Install the pressure sensitive gasket to the unit side of the vertical flange on the economizer box.

5.Hang the economizer on the unit as shown in Figure I-PR-7. Lift the economizer by using the holes provided in the top panel of the economizer.

6.Align economizer holes with the holes in the unit channel. Install screws in the top (6x) and bottom (6x) of the economizer.

7.Remove the unit’s rear middle panel and unbraze the two copper pipes in

the 2 5/8” water pipe. Do not remove the pipe outlet blockoff panel.

8.Remove the economizer tubing assemblies from the shipping box. Check ship-separate parts against those shown in Figures I-PR-8, I-PR-9, I- PR-10, and I-PR-11. Face the front of the unit to see which side the water pipe exits to determine if the unit has either right or left-hand piping.

9.Assemble tubing as shown in Figure I- PR-8 or I-PR-11.Tack all tubes in place before brazing to ensure proper fit-up. For right-hand piped units, install the ball valve actuator assembly and actuator as shown in Figure I-PR-10. Refer to the unit wiring diagram for wiring connection points.

10.Install the pipe insulation on all pipe line to prevent sweating

11.Install the rear panels.

12.Re-install the filter rack on the back of the economizer coil box and affix with screws provided.

Figure I-PR-7. Installing the waterside economizer.

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