English to Spanish Tech/Engineering Engineering: Industrial Boiler maintenance and operation manual

A continuación les comparto algunos extractos del texto fuente. En todos ellos aparece la expresión "from cold", por lo que me gustaría confirmar:

a. Si estaría correcto traducirlo como "en frío", considerando el contexto? Por ejemplo, en la primera oración "Como encender/ echar a andar el quemador **en frío**???"

Starting the Burner From Cold

Whilst this is catered for in mechanical design of the pressure vessel, the life expectancy of the boiler can be affected if the boiler is frequently heated to quickly from cold.

When starting from cold the furnace approaches its design temperature shortly after start-up, whereas the tube and shell temperatures are delayed by the time taken to bring the contained water up to temperature.

The life expectancy of the boiler and door insulation, ignoring other factors, is proportional to the number of the thermal/mechanical cycles that the boiler undergoes from cold/zero pressure to working temperature and pressure.

Differential thermal expansion and local temperature gradients all result from continuous pressure/temperature cycling and heating from cold too quickly.

To Achieve Long Trouble-Free Boiler Life:
i. When heating from cold do so slowly.