Pump Controller Wiring Notes
Connections to Nortec Valve Controller
The pump controller can accept control input from many different valve controllers at once. This
is useful for cases when a single large pump skid is used to supply high-pressure water to
different zones / manifold groups. For example, 1 large pump skid supplies water to 3 different
air-handlers, each with their own manifolds, valves, and valve controller.
If there are more than 4 valve controllers, additional controllers can be added by doubling up
wires on the pump controller terminal strip. For example; valve controller 5 would share
terminals 1 and 5 with valve controller 1.
Connections to Valve Controllers by Others
Non-Nortec valve controllers can be used with the HP HVAC system. In these cases the valve
controller is wired to the pump controller, as it would be with a Nortec valve controller. The
valve controller need only close the loop, and does not need to provide a voltage or current. If
the valve controller does provide a signal, it should be wired to a relay which will then close the
pump controller loop.
Remote Monitoring
The pump controller terminal strip features several sets of dry contacts to allow for connections
to a building management system, status lights, or other types of equipment. They are
controlled by a relay and activated under certain conditions. Wire gauge is determined by the
equipment to be using the contacts. Refer to the manufacturers recommendations.
On (Terminals 10 and 11): Closed when the HP HVAC system is powered on and ready.
Active (Terminals 12 and 13): Closed when the HP HVAC system is humidifying.
Service (Terminals 14 and 15): Closed when the HP HVAC system requires regular
maintenance. (See Chapter X for service information.)
Fault (Terminals 16, 17 and 18): Terminal 16 is normally open and closes when an operation
fault occurs. Terminal 18 is normally closed and opens when an operational fault occurs.
Terminal 17 is a common terminal for both cases.
25 | HP Series Installation Manual