Split System Replacement | STANDARD
Standard Split System Replacement. Replacing an Air handling Unit/Furnace and condenser equipment with new modern equivalent.
This is a standard Split System swap wherein, we remove old equipment, replace with the modern equivalent and connect to existing power wiring, connect to existing drain systems as needed, install new disconnect and turn on and test. There are no enhancements to the duct work, new power wiring installations or configurations to existing plumbing systems.
Step 1: Perform required lockout/tag out safety protocol as per NFPA70E of all high-voltage electrical circuits prior to beginning work on the existing unit.
Step 2: Recover all of the existing refrigerant (Freon) into EPA approved recovery cylinders for safe disposal as per EPA guidelines.
Step 3: Provide off-site disposal of job site refuse/debris.
Step 4: Demo and dispose of the existing condensing unit in accordance with EPA regulatory guidelines.
Step 5: Demo and dispose of the existing air handler or furnace.
Step 6: Furnish and install (1) cannister of RX-11 line flush in order to clean the existing copper refrigerant line set.
Step 7: Furnish and install (1) 4oz bottle of Acid-away acidic neutralizer.
Step 8: If required provide crane or material lift for equipment placement at overhead locations.
Step 9: Furnish and install new AHU/Furnace.
Step 10: Furnish and install new condensing unit.
Step 11: Adapt and connect existing supply and return ducting, seal all seams and penetrations with UL rated foil-backed tape and applicable mastic sealant as needed.
Step 12: Attach to the existing copper refrigerant tubing, controls and electrical power wiring.
Step 13: Pressure test to 250 psi with dry nitrogen to ensure all newly soldered copper connections are leak free prior to evacuation.
Step 14: Evacuate system to 500 microns as per EPA industry regulatory guidelines.
Step 15: Confirm voltage prior to testing.
Step 16: Perform basic start-up and testing to ensure proper operation prior to departure and adjust refrigerant charge according to manufacturer’s recommendations. Depending on outside ambient air temperature at the time of system install, this may require a return trip in the future to further balance the charge to ideal specifications as listed by the nomenclature on the unit’s data tag.
Step 17: Adjust superheat and sub-cooling values to reflect the manufacturer’s recommendations.