
MATERIALS 105
(5) Primary hot water temperature (if indirect cylinder).
(6) Whether primary circulation is to be gravity or pump
operated.
(7) Sketch of tappings. Position of manholes, surface of heater
battery.
(8) Metal required, galvanised steel, or copper.
(9) Steam pressure (for calorifiers).
(10) Steel or copper heater.
(11) Chemical analysis of water.
(12) Date when delivery will be expected.
With regard to item (11), the chemical composition of the water
may affect the output of a steam calorifier, and for this reason it is
advisable that the manufacturer should see a chemical analysis when
quoting for the equipment.
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