Carrier Performance 48VR-A Installation Instructions Manual

Also see for Performance 15 48VR-A: Owner's information manual Owner's information manual

Contents

15Use the Start--Up Checklist supplied at the end of this book andproceed as follows to inspect and prepare the unit for initialstart--up:1. Remove access panels (see Fig. 20).2. Read and follow instructions on all DANGER, WARNING,CAUTION, and INFORMATION labels attached to, orshipped with unit.3. Make the following inspections:a. Inspect for shipping and handling damage, such asbroken lines, loose parts, disconnected wires, etc.b. Inspect for oil at all refrigerant tubing connections andon unit base. Detecting oil generally indicates arefrigerant leak.c. Leak--test all refrigerant tubing connections usingelectronic leak detector, or liquid--soap solution. If arefrigerant leak is detected, see following Check forRefrigerant Leaks section.d. Inspect all field-- and factory--wiring connections. Besure that connections are completed and tight.e. Ensure wires do not touch refrigerant tubing or sharpsheet metal edges.f. Inspect coil fins. If damaged during shipping andhandling, carefully straighten fins with a fin comb.FIRE, EXPLOSION HAZARDFailure to follow this warning could result in personalinjury, death or property damage.Do not purge gas supply into the combustion chamber. Donot use a match or other open flame to check for gas leaks.Use a commercially available soap solution madespecifically for the detection of leaks to check allconnections. A fire or explosion may result causingproperty damage, personal injury or loss of life.! WARNING4. Verify the following conditions:a. Make sure gas line is free of air. Before lighting the unitfor the first time, perform the following with the gasvalve in the OFF position:NOTE: If the gas supply pipe was not purged before connectingthe unit, it will be full of air. It is recommended that the groundjoint union be loosened, and the supply line be allowed to purgeuntil the odor of gas is detected. Never purge gas lines into acombustion chamber. Immediately upon detection of gas odor,retighten the union. Allow 5 minutes to elapse, then light unit.b. Make sure that outdoor--fan blade is correctly positionedin the fan orifice.c. Make sure that air filter(s) is in place.d. Make sure that condensate drain trap is filled with waterto ensure proper drainage.e. Make sure that all tools and miscellaneous loose partshave been removed.START--UPStep 1 — Check for Refrigerant LeaksProceed as follows to locate and repair a refrigerant leak and tocharge the unit:EXPLOSION HAZARDFailure to follow this warning couldresult in death, serious personal injury,and/or property damage.Never use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.! WARNING1. Locate leak and make sure that refrigerant system pressurehas been relieved and reclaimed from both high-- andlow--pressure ports.2. Repair leak following accepted practices.NOTE: Install a filter drier whenever the system has been openedfor repair.3. Add a small charge of Puron (R--410A) refrigerant vapor tosystem and leak--test unit.4. Recover refrigerant from refrigerant system and evacuate to500 microns if no additional leaks are found.5. Charge unit with Puron (R--410A) refrigerant, using anaccurate scale. Refer to unit rating plate for required charge.Step 2 — Start--up Gas Heating and MakeAdjustmentsComplete the required procedures given in the Pre--Start--Upsection before starting the unit. Do not jumper any safety deviceswhen operating the unit. Make sure that burner orifices areproperly aligned. Unstable operation my occur when the burnerorifices in the manifold are misaligned.Follow the lighting instructions on the heating section operationlabel (located on the inside of the control access panel) to start theheating section.NOTE: Make sure that gas supply has been purged, and that allgas piping has been checked for leaks.Pipe Plug ManifoldA07679Fig. 11 -- Burner Assembly48VR-- A