Installation
Mounting the Panel:
Carefully remove the ZP3-HCMS panel and
cover from the shipping carton. Slide the PC
board out of the snap track base and mount the
base to a flat surface either on or near the HVAC
indoor unit in an area that will facilitate easy
access for wiring. Reinstall the PC board by
carefully centering it over the base and snapping
it back into the track groves.
Wiring the Zone Thermostats and Dampers:
Refer to the logic panel wiring diagram. Wire
zone 1 thermostat and its associated damper to
the ZONE 1 terminals on the logic panel. Wire
zone 2 and 3 thermostats and dampers in the
same manner.
Wiring the HVAC Equipment:
Wire the HVAC unit to the panel terminals. Do not
wire the equipment common to the ZP3-HCMS
panel.
Installing and Wiring the ZPA-DTS
Discharge Temperature Sensor:
Drill a 15/32” hole in the middle of the main
discharge air plenum approximately 18” to 30”
from the heat pump electric strip heater or the
furnace heat exchanger in a fossil fuel
application. Slide the discharge air probe into the
hole and use two self-tapping sheet metal
screws to secure the base to the plenum. Use
conventional 18-2 thermostat wire and wire nuts
to attach the sensor leads. Replace the cover
with the wire nut connections inside. Strip 1/8”
insulation off of each wire at the other end and
and the wires to the screw terminals marked DA
on the panel.
ZP3-HCMS Installation and Operation Instructions
(Versions 301) 2 Heat / 2 Cool - Auto Changeover
First Call Priority - Time Share
Wiring the Transformer:
Wire a separate 24 Volt transformer of the proper
VA to the logic panel terminals marked (R) and
(X). Do not power the panel up until wiring is
completed.
Test, Check and Startup:
1. Verify that all component wires have been
connected to the proper terminals and are secure.
2. Disconnect the HVAC equipment (R) terminal
wire at the panel and apply 24 Volts to panel.
3. Take a jumper wire and momentarily short the
DA terminals. This will put the panel’s time delays
in “speed up” mode.
4. Place the zone thermostats in the OFF position.
5. The panel accepts 2-wire (power close / spring
open) or 3-wire (power open / power close) zone
dampers. 2-wire dampers should be wired to the
(C) and (PC) terminals.
6. Place zone one thermostat in the fan ON mode.
ZD1 LED will remain on and ZD2 and ZD3 LED
will go out. The (G) FAN LED will come on.
7. Confirm that zone one damper is in the open
position and zone two and three dampers are
closed.
8. Leave zone one thermostat in fan ON and place
zone two thermostat in the fan ON mode. ZD2
LED will come on.
9. Confirm that both zone one and zone two
dampers are in the open position and zone three
damper is closed.
10. Leave zone one and zone two thermostats in
Fan ON and place zone three thermostat in the
fan ON mode. ZD3 LED will come on. Confirm
that all zone dampers are in the open position.
11. Place all zone thermostats in the Auto fan
mode.
12. Remove 24 Volts to the panel and reconnect
the HVAC ® wire.
10. When 24 Volts is applied again to the panel,
the internal time delays will be activated.
11. Place zone thermostats in proper mode of
operation.
12. Confirm that the LIMIT LED is ON. If not,
check LIMIT wiring. If the system goes out on high
or low limit, the LIMIT LED will blink.
