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1st Control Signal Output
2nd Control Signal Output
3rd Control Signal Output
4th Control Signal Output
Terminal Boards
(Located externally on the WSHP chassis)
Terminals Located on
MicroTech 2000 Auxiliary Board
J6
24VAC
Pilot Duty Relay
(by others)
Use contacts as needed for option
Terminals Located on
MicroTech 2000 Auxiliary Board
J7
24VAC
Pilot Duty Relay
(by others)
Use contacts as needed for option
Terminals Located on
MicroTech 2000 Auxiliary Board
J10
24VAC
Pilot Duty Relay
(by others)
Use contacts as needed for option
24VAC
Pilot Duty Relay
(by others)
MicroTech 2000 units can provide up to 4-outputs, that can
be configured for any of the following output control signals:
1) Scheduled Output
When using a Network Master Panel (NMP) these outputs
can be assigned to one of 32 available schedules. The
output will energize when the assigned schedule is occu-
pied and de-energize when in unoccupied. These outputs
could be used to control lights, etc.
2) Auxiliary Heat (Skin Heat)
When using a Loop Water Controller (LWC) the MicroTech
2000 receives loop water temperature information from
the LWC and will use the Auxiliary Heat output for heating
when loop water temperature is inappropriate for heat
pump heating. These outputs provide a signal that can be
used to control a remote electric heater. The output will
energize on a call for electric heat and de-energize when
not required.
3) Fresh Air Damper
These outputs provide a signal that can be used to control
a remote fresh air damper. The output will energize when
the unit fan is energized and de-energize when the unit
fan is de-energized.
4) Motorized Water Valve
These outputs provide control for a motorized water valve
that can be used to stop or divert flow away from the
WSHP when compressor operation is not needed. The
output will be energized when compressor operation is
required.
If more than one of the above control signals is required on
a single WSHP, the MicroTech 2000 Auxiliary Module Kit
(107239001) must be used and these additional output
control signals will be connected to the Auxiliary board. The
Auxiliary board is provided in all 2-circuit units. 1-circuit units
can provide up to 4-outputs while 2-circuit units only have 3-
outputs available. The 4
th
control signal output shown in the
diagrams below is not available on 2-circuit units.
If the Auxiliary board is added in the field to provide additional
outputs it will need to be mounted within the WSHP control
box so that J1 on the Auxiliary board can be connected to J6
on the MicroTech 2000 board without exceeding a maximum
wire length of 10".
Also, each output is by default configured to “none” and
must be field set to one of the four signal types listed above
using the Monitor software, cable, and a PC communicating
to the unit through an MCG panel.
Field Installed Options of MicroTech 2000 Units
IMPORTANT:
To use onboard 24VAC, change
the jumper PF1 on the
MicroTech 2000 controller from
factory default pins 1 and 2 to
pins 2 and 3.
