Install Instructions

SF100, SF100-L SF100-HP and SF100-L-HP HYDRONIC SYSTEM FEEDER
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Installation Instructions
WARNING: “Risk of electrical shock”. This pump is supplied with a grounding connector and grounding-type
attachment plug. To reduce the risk of electrical shock, be certain that it is connected only to a properly grounded,
grounding-type receptacle. To prevent electrical shock, disconnect power before initiating any work. In the case of
pump failure, the motor housing and/or the pumped fluid may carry high voltage to components normally
considered safe.
Set the solution feeder on a secure and level base. Connect the flexible hose supplied with the unit to your system
connection point - use a union and isolation valve to allow for future service. Note that the check valve supplied
with the unit must be on the system end of the flexible hose.
NOTE - Relief and drain valves may be piped to the SF100 tank, but any holes for entry of these pipes should
be cut into the side of the tank near the top rather than through the cover. This will allow the cover and top to
be easily removed if necessary.
Fill the SF100 tank with fluid. The unit is suitable for water or glycol/water solutions of up to 50% glycol
concentration.
Operation Instructions
Leave the field installed isolation valve closed until the SF100 has been cycled and checked for leaks.
Plug the SF100 into an approved electrical outlet. The pump will start, charge the pressure tank, and stop
automatically. Check to ensure that all joints are tight and there are no leaks.
NOTE - It may be necessary to purge air from the lines before the pump can draw fluid from the tank. This
can be done with the diverting valve, which is accessible through the hole on the left-hand side of the cover.
Turn the valve handle so that it is vertical to purge air - return it to horizontal for normal operation.
Verify that the outlet pressure registered on the pressure gauge meets your system needs. It is factory set at 12 psig
(83 KPa), but can be increased by turning in the adjusting stem on the top of the regulating valve. The regular SF100
or SF100L can but increased to 55 psi and the SF100-HP or SF100-HP-L can be increased to 85 psi.
Fill your system, and then slowly open the valve isolating the system from the SF100.
NOTE: Do not use the SF100 to fill large systems. The pump does not have a high flow rate; using it to fill
large systems will cause unnecessary wear on the pump and may void the warranty.