A full unobstructed return air path should be provided to enable the air to return to the heater. The Parmet Range of Gas Fired Warm Air Heaters covers applications with outputs 3. Positioning the Unit from 300,000 to 800,000 Btu/h.
60 Kw) GP800 1100CM (b) Heaters installed in a plant room. Position of Air Vent HIGH Low level 540cm2 +4.5cm2/kW GP300 820CM2 1640CM2 in excess of 60 kW (83.7in2 + 0.7in2/kW in excess of 60 kW) GP400 1100CM2 2200CM2 High Level 270cm2 + 2.25cm2/kW...
Model Flue Size (Nominal Bore) GP-300 230mm (9 in) GP-400 230mm (9 in) GP-500 230mm (9 in) GP-750 255mm (10 in) GP-900 255mm (10 in) Wherever possible horizontal runs should be avoided, but where this is unavoidable every one foot of horizontal flue must be followed by three feet of vertical.
subjected to local heat gain e.g.in front of will occur each time the external control windows allowing the sun to act directly on circuit is completed. the thermostat. With all the controls on and the thermostat Note: The main electric supply should be calling for heat, the burner starts up going protected by a fused isolating switch rated through a pre-purge period before ignition...
Before commencing maintenance, isolate the unit from electricity supply. 5. The sequence of events is:- Check and clean the main fan and vent and (1) Burner fans start. housing. Check there is no impingement of (2) Air pressure switch made. the housing.