General Unit Requirements

The checklist listed below is a summary of the steps re- quired to successfully install a Commercial rooftop unit. This checklist is intended to acquaint the installing person- nel with what is required in the installation process. It does not replace the detailed instructions called out in the appli- cable sections of this manual.

[ ] Check the unit for shipping damage and material short- age; file a freight claim and notify Trane office.

[ ] Verify that the installation location of the unit will provide the required clearance for proper operation.

[ ] Assemble and install the roof curb. Refer to the current edition of SAHF-IN-5 for 20 through 75 Ton units or SXHG-IN-2 for 90 through 130 Ton units.

[ ] Fabricate and install ductwork; secure ductwork to curb.

[ ] Install pitch pocket for power supply through building roof. (If applicable)

[ ] Rigging the unit.

[ ] Set the unit onto the curb; check for levelness.

[ ] Ensure unit-to-curb seal is tight and without buckles or cracks.

[ ] Install and connect condensate drain lines to each evaporator drain connection.

[ ] Remove the shipping hardware from each compressor assembly.

[ ] Remove the shipping hold-down bolts and shipping chan- nels from the supply and exhaust fans ordered with rub- ber or spring isolators.

[ ] Check all optional supply and exhaust fan spring isola- tors for proper adjustment.

[ ] Verify that all plastic coverings are removed from the compressors.

[ ] Verify all discharge and liquid line service valves (one per circuit) are back seated.

Main Electrical Power Requirements

[ ] Verify that the power supply complies with the unit name- plate specifications.

[ ] Inspect all control panel components; tighten any loose connections.

[ ] Connect properly sized and protected power supply wir- ing to a field-supplied/installed disconnect and unit

[ ] Properly ground the unit.

Note: All field-installed wiring must comply with NEC and applicable local codes.

Installation (Continued)

Field Installed Control Wiring

[ ] Complete the field wiring connections for the constant volume controls as applicable. Refer to "Field Installed Control Wiring" for guidelines.

[ ] Complete the field wiring connections for the variable air volume controls as applicable. Refer to "Field Installed Control Wiring" for guidelines.

Note: All field-installed wiring must comply with NEC and applicable local codes.

Requirements for Electric Heat Units

All SEHF Units (380 minimum voltage) & SEHG units.

[ ] Verify that the power supply complies with the electric heater specifications on the unit and heater nameplate.

[ ] Inspect the heater junction box and control panel; tighten any loose connections.

[ ] Check electric heat circuits for continuity.

SEHF Units w/200V or 230V Electric Heat: (Requires Separate Power Supply to Heater)

[ ] Connect properly sized and protected power supply wir- ing for the electric heat from a dedicated, field- supplied/ installed disconnect to terminal block 4TB2, or to an op- tional unit mounted disconnect switch 4S15.

Requirements for Gas Heat

[ ] Gas supply line properly sized and connected to the unit gas train.

[ ] All gas piping joints properly sealed.

[ ] Drip leg Installed in the gas piping near the unit.

[ ] Gas piping leak checked with a soap solution. If piping connections to the unit are complete, do not pressurize piping in excess of 0.50 psig or 14 inches w.c. to prevent component failure.

[ ] Main supply gas pressure adequate.

[ ] Flue Tubes clear of any obstructions.

[ ] Factory-supplied flue assembly installed on the unit.

[ ] Connect the 3/4" CPVC furnace drain stubout to a proper condensate drain.

Requirements for Hot Water Heat (SLH_)

[ ] Route properly sized water piping through the base of the unit into the heating section.

[ ] Install the factory-supplied, 3-way modulating valve.

[ ] Complete the valve actuator wiring.