U.S and Foreign Patents & patents pending
© Copyright 2004 by Arzel
®
Zoning Technology, Inc.
8
Rev 2.1.5
IF ALL ELSE FAILS...
1.
Turn the Arzel
®
power switch to OFF.
2.
Disconnect the thermostat wires from any zone and connect them to the HVAC OUTPUT terminals.
3.
Turn the MPS™ switch ON, this will open ALL zone dampers.
The HVAC system will work without the benefit of the zoning system. The heating and air conditioning equipment is now
controlled by that thermostat. All dampers will stay open. If the HVAC system does not work in this configuration, you
probably have a wiring, thermostat or other equipment problem.
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Troubleshooting Matrix
FAN CHECK-OUT
1.
Set all thermostats to the OFF position and all fan switches to AUTO.
2.
Turn the HVAC system and the Arzel
®
system PWR switches to ON. The LED light next to the switch will illuminate.
3.
Turn the Zone 1 thermostat fan switch ON. The S1 indicator, the Fan output (G) and Pump LED lights will
illuminate. The fan in the HVAC system will turn on. The pressure and vacuum pump will position all the dampers.
Check the air flow at all register outlets to determine that only Zone 1 dampers are open and all other dampers are
closed.
4.
Follow the above procedure for all other zones.
HEATING & COOLING CHECK-OUT
1.
Set all thermostats to the OFF position and all fan switches to AUTO before starting heating system check out.
2.
Set Zone 1 thermostat to the HEAT position and turn thermostat up so that the thermostat is calling for heat. The
S1 indicator, the W output, and the pump LED lights will illuminate. The pressure/vacuum pump will position
all the dampers. Check to see that the heating circuit is energized.
If heat pump is installed, check operation of Emergency Back-up heating. Turn the thermostat down until the
thermostat is satisfied. The LED lights will go out and the pump will stop. Dampers will remain open in the last
zone that called. For heat pump, LED indication will be Y & G.
3.
Set thermostat for Zone 1 to the COOL position. Turn thermostat down so that the thermostat is calling for cooling.
The S1 indicator, the Y and G output and the pump LED will illuminate. The pressure/vacuum pump will
position all the dampers. Check to see that the compressor contactor is energized. For heat pump, LED
indication will be Y, G & O.
4.
Place Zone 1 thermostat in the OFF position.
5.
Follow the above procedure for all other zones.
Commissioning Procedure
More tech information is available at:
www.arzelzoning.com
