tekmar 345 Power Manager - Manual (Page 2)

© 2009 D 345 - 02/09 2 of 4
Sequence of Operation
The primary purpose of the 345 is to provide power to a
Reset Module 420, 421, 422, or 423, and to provide power
to other tN4 devices such as tN4 Thermostats or tN4
Setpoint Controls.
Single Zone Application
A basic application allows a 345 to connect to a reset module
and to a single tN4 Thermostat or tN4 Setpoint Control to
operate single zone systems. The auxiliary pump is used
to operate the system pump.
Remote Manifold Location Application
Another application is to locate the 345 and the Reset
Module in the mechanical room while the Zone Managers
can be located at remote manifold locations.
Test
345 Power
Manager
tN4 Thermostat
or
tN4 Setpoint Control
System
Pump
Reset
Module
tN4 Bus
Mechanical Room Manifold Location
Zone
Manager
Zone
Expansion
Module
345
Power
Manager
Reset
Module
System
Pump
Test
tN4 Zone Expansion Module 325