
MATERIALS
Heaters
117
(1) Inlet air temperature. Outlet air temperature.
(2) Air volume through heater in m
3
/second.
(3) Type of heater required :
(a) Electric. State phase, frequency, volts.
(b) Hot water. State temperature.
(c) Steam. State gauge pressure.
(4) Method of control, manual or thermostat.
(5) Address of building or site to which heater is to be delivered.
(6) Latest date for delivery.
Air Filters
( 1 ) Air temperature.
(2) Air volume through filter in m
3
/s.
(3) Any special air condition, i.e. presence of excessive dust, or
fumes.
(4) Type of filter required :
(a) Viscous oblique type.
(b) Viscous self-cleaning type.
(c) Cotto