PV Models

Model SID3.5
A 3.5-watt driver, intended for PV domestic hot water and instant hot water circulation without glycol. Requires a 5 watt Amorphous/CIS module or larger such as Shell ST5. It is rated for 2.0gpm and can be used in open loop water systems with one 4x10 solar collector.

Model SID7.0
A 7-Watt driver, intended for PV domestic hot water and 24 hour instant hot water circulation. Requires a 7 watt Crystalline module or larger such as BP SX5M.  It is rated for 2.5gpm and can be used in open loop water systems with one 4x10 solar collector.

Model SID10
A 10-Watt driver used for domestic solar hot water and 24 hour instant hot water in large homes. Requires a 10watt Crystalline module or larger such as BP SX10M. It is rated for 3.3gpm and can be used in open loop water systems with up to three 4x10 solar collectors or in closed loop antifreeze systems with up to two 4x10 solar collectors.

Model SID20
Requires a 30 watt Crystalline module or larger.  It is rated for 5.0gpm and can be used in larger systems [call for details].

Battery Operated

SID10B12
A 10-Watt driver used with 12-volt battery systems. The speed of this driver will change with battery condition [voltage]. Often used in radiant floor application, etc.

SID10B24
A 10-Watt driver used with 24-volt battery systems. This driver has a built in dc-dc converter, causing the pump to be "constant-speed" from 20 to 35 volts. An excellent driver for "off-grid" or "lost-grid" radiant floor zone circulation. Because it is "constant-speed" a zone will not change characteristics, as batteries discharge. The built-in 3rd generation converter exceeds 96% efficiency. By distributing conversion among the zone circulators, instead of one central converter, system reliability is increased; a single failure does not stop all zones. Simplicity of wiring is also improved, as no central converter need be wired. Just fuse each zone pump branch [at the battery] and wire the battery through the thermostat and then to the zone pump.