tekmar 345 Power Manager - Manual (Page 3)

3 of 4 © 2009 D 345 - 02/09
Auxiliary Pump
Zone Group Pump
The 345 includes an auxiliary pump input (terminal 1) and
a powered auxiliary pump output (terminals 9 and 10).
When the auxiliary pump input is powered with 24 V (ac),
the auxiliary pump output is energized with 115 V (ac).
The auxiliary pump can be used in two different ways:
1) In single zone applications, a tN4 Thermostat or tN4
Setpoint Control activates the auxiliary pump output to
power the system pump.
2) In applications with Mixing Expansion Modules, the low
voltage system pump output on the Mixing Expansion
Module activates the auxiliary pump output to power the
system pump.
Mixing Expansion Module Application
The 345 can also be used to provide power to up to four
Mixing Expansion Modules. The 345, Reset Module, and the
Mixing Expansion Modules can be located in the mechanical
room, while each Zone Manager can be remotely located
beside a manifold.
tN4 Zone Expansion Module 325
tN4 Zone Expansion Module 325
tN4 Zone Expansion Module 325
345
Power
Manager
Mix 3 Bus
Mechanical Room
Mix 1 Bus
Mix 2 Bus
423
Reset
Module
Mixing
Pump
Primary
Pump
Mixing
Pump
Mixing
Pump
Mixing
Expansion
Module
Mixing
Expansion
Module
Mixing
Expansion
Module
Zone Manager
Location 1
Zone Manager
Location 2
Zone Manager
Location 3