Installation
Mounting the Panel:
Carefully remove the Z-300 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 Z-300-HPS HVAC
UNIT terminals. Note: Do not wire the equipment
common to the Z-300-HPS panel.
Installing and Wiring the Z-300-DAS
Discharge Air Sensor:
Drill a ½”hole in the middle of the main discharge
air plenum approximately 18” downstream from
the heat pump electric stip heaters or furnace
heat exchanger. Remove the Z-300-DAS cover.
Slide the probe into the hole and use two self-
tapping sheet metal screws to secure the base
making sure that the gasket is in place. Use 18-2
thermostat wire and wire nuts to attach the
sensor leads. Replace the cover and wire the
sensor to the DAS terminals on the Z-300 panel.
Z-300-DAS
PLENUM
SENSOR PROBE
COVER
GASKET
TO
PANEL
DAS
TERMINALS
MOUNTING
SCREWS
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
DAS terminals. This will put the panel’s time
delays in “speed up” mode.
4. Place the zone thermostats in the OFF
position.
5. Place zone 1 thermostat in the heating mode
and have the thermostat call for heat. Confirm
that (ZD1) LED is ON and that (W) LED is ON.
Confirm that zone 1 damper is open and zone 2
and 3 dampers are closed. There will be no
voltage across zone 1 (D) and (D) terminals and
24 volts on zone 2 and 3 (D) and (D) terminals.
6. Put zone 1 thermostat in the cooling mode and
have the thermostat call for cooling. Confirm that
(ZD1) LED is ON and that the (Y) and (G) LEDs
are ON. If the thermostat has internal time
delays, the cooling call may not activate
immediately.
7. Turn zone 1 thermostat off and repeat steps 5
and 6 with zone 2 and 3 thermostat. Remember,
the zone calling will have its damper open and
there will be no voltage on the (D) and (D)
terminals for that zone.
8. Determine the ventilation mode of each zone
thermostat by setting the thermostats in the Fan
AUTO or ON mode.
9. Remove 24 Volts to the panel and reconnect
the HVAC (R) wire.
10. When 24 Volts is again applied to the panel,
the internal time delays will be activated.
11. 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.
COVER
RETAINER
SCREW
Z-300-HPS Installation and Operation Instructions
3 Heat / 2 Cool Heat Pump with Fossil Fuel option
Auto Changeover - First Call Priority - Time Share
Z NE
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Zone Control Made Simple
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