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General Specification
MOTOR, 4 POLE VERSION--totally enclosed air cooled shaded pole, high impedance, 230 volt 50 Hz. Stainless steel shaft, silicone oiled bearings, 1/100hp 0.20 amps at 230 V. Thermal overload protected.
S.F.O. (2500 rev/min)
SF1 and SF2 (1250 rev/min)
CONSTRUCTION--Light alloy die cast motor mount and 24 gauge galvanised steel saddle.
MOTOR MOUNT--allows air circulation to insulate motor from flue pipe heat. Removable for easy maintenance.
IMPELLER FAN--4 bladed balanced for quiet operation.
FLUE GAS TEMPERATURES--up to 1020O F (550O C).
GENERAL--All Shur-Flo models may be installed on horizontal or vertical flue pipes running at any angle. Intended for closed combustion devices.
NOTE--SF1 and SF2 performance figures are those obtained using the standard 4 pole (1250 rev/min) motor. For excessively difficult installations these units can be supplied with 2 pole (2500 rev/min) motors, when volumetric capacity will be doubled. In addition for ultra quiet installations 4 pole motors can be supplied with S.F.O. units, but with a considerable reduction in performance.
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Installation Details
Select position of flue mount as close to boiler outlet as possible 12 inches from main stack or as close as possible. Note: The position selected must always be on the main stack side of any draught regulator.
Cut a rectangular hole 4 inches wide by 6 inches long. This hole should be on either side of the flue but not on top or underneath.
Attach fan blade to shaft at the point on the shaft that represents the approximate centre of the flue. Secure blade to shaft flat, using Allen screw provided
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Ensure sealing mat is in position.
Insert fan into flue through hole already cut, with the fan pointing towards the main stack or stack outlet.
Press saddle firmly against flue so that it conforms to pipe. Mark fixing centres on flue pipe through slots in saddle. Drill holes in flue and attach saddle with four sheet metal screws. To prevent vibration all flue pipe joints must be secured with sheet metal screws.
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