rough order of magnitude (ROM) Definition. An estimate of costs and time provided in the early stages of a project when its scope and requirements has not been fully defined. An ROM is used to reduce the uncertainty of cost outcomes for both parties when project details have yet to be identified. Use this term in a sentence.
Prior To Fitting Your Wickes Water Softener. The water softener must be installed inside a plastic water tank, this tank should then be you may hear a hissing noise as the water rushes through the valve. Once the hissing noise has stopped, open the outlet valve and run some water.
Fergus, ON, Canada N1M 2X1 GAS FIRED WATER HEATER â JohnWood. GAS FIRED WATER HEATER the burner causing a sizzling noise as the water is evaporated. onto the burner and make a hissing or sizzling sound. This is normal and should not be a reason for concern.