Proper Refrigeration Piping Installation Practices

by | Refrigeration | 3 comments

Proper Refrigeration Piping Installation Practices – Installing a new air conditioning and heating system requires skill and knowledge of proper procedures in electrical wiring, controls wiring, and pipework. On commercial projects, a skilled electrician handles the electrical hookups, a controls technician handles the control wiring, and a pipe fitter handles the pipework, including the refrigeration piping, which can include chilled water and refrigeration pipework. (more…)

Condenser Coil Repair | HVAC Refrigeration

by | Refrigeration | 0 comments

New Condenser Coil Repair - HVAC Crane LiftCondenser Coil Repair - A crane is used here to lift a new condenser coil to a rooftop. The old condenser coil was leaking and could no longer be repaired. The process involved recovering all the refrigerant from the Trane rooftop unit.

The rooftop unit was then partially disassembled and the old coil cut out from the system taking great care and planning to ensure the new coil could be retrofitted to the old refrigeration piping system.

Good planning and skilled HVAC techs make the jobs go smoothly and make the replacement seem easy especially to the customer. (more…)

HVACR Pipe Soldering Brazing – Refrigeration Systems

by | Technical Reference | 0 comments

What You Will Learn in HVACR Pipe Soldering Brazing

  • Safety with Brazing and Soldering
  • Basic Soldering and Brazing
  • The Bread Trick with Water Pipes
  • Alternatives to the Bread Trick
  • Brazing with Oxyacetylene
  • Cleaning and Fluxing
  • Brazing with Nitrogen
  • Nitrogen Pressure Testing
  • Avoiding Problems with Oxidation

HVACR Pipe Soldering Brazing - In HVACR there are two major types of soldering done. Soft Soldering for soldering water pipes and brazing or silver soldering for soldering refrigeration piping. There are various techniques for both types of soldering and everyone develops their own in the field but it is important to follow the basics of soldering when joining the piping together. Following the basics of soldering will ensure success and we all enjoy a successful job completed.

As always safety is first with anything. Two big considerations must be adhered to when soldering or brazing:

  • Eye protection and burn protection for hot dripping soldering. Keep yourself safe when soldering or brazing.
  • The inherent risk of using an open flame around combustible materials. Always make sure you have a plan and use preventive techniques such as wet rags and fireproof clothe or barriers. This is especially true when soldering around wood or even outside (around a condenser) where pine needles or leaves can easily catch fire and spread rapidly. Always have either a hose or fire extinguisher handy.

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