Zonex ZonexCommander, Руководство по установке

Страница: 25 / 54

25
DESCRIPTION
The Zonex Systems RMOD is a microprocessor based digital communi-
cating HVAC Relay Module for the ZonexCommander (Plus) system. The
RMOD controls Gas/Electric 2-stage heat and cool, as well as Heat Pump,
2-stage cool and 3-stage heat, based on supply air temperature. The
RMOD provides high and low limits to protect HVAC system components.
Each RMOD can communicate with up to 20 thermostats. There can
be up to 4 RMOD controllers per Command Center; however, each
Command Center controls up to 20 thermostats. The total number of
thermostats cannot exceed 20 on each Command Center.
The RMOD and corresponding ModStats must be configured into the
ZonexCommander (Plus) system before the RMODs will communicate.
See Installation Guide.
INSTALLATION
RMOD circuit board
The RMOD can be installed with the Command Center or in the HVAC unit
it is controlling. It must be protected from the elements in an area
where the temperature range is from 25° to 125° non-condensing. DO
NOT install the Command Centers or
RMODs in close proximity to large
transformers, VFDs, or any device that produces electrical energy fields.
1. Install the RMOD where it can be properly accessed.
3. The RMOD is shipped from the factory to operate in the Gas Electric
mode. For Heat Pump operation, place the HP jumper tab over
both pins.
4. For Heat Pump “O” reversing valve operation the O/B jumper tab is
on one pin. For reversing valve “B” operation, place the jumper tab
over both pins.
intermittent fan. For Constant FAN in the Occupied mode, place the
jumper tab over the middle and upper pins (ON).
of the bypass
take-off.
bypass take-off (Gas Electric), or between the indoor coil and strip
heat elements (Heat Pump AHU).
Addressing & Calibration
button until the correct address appears, and release.
2. Energize the FAN only and check RMOD display calibration.
adjust calibration.
4. Return air temperature is displayed when the UP and DN buttons are
holding down these buttons.
Wiring
8740).
any other ac voltage wiring; it must be run completely separate. Use
switch to the EM terminals on the RMOD .
The RMOD is ready to be configured in the ZonexCommander (Plus)
program.
See Installation Guide.
RMOD UNIT DESCRIPTION / INSTALLATION
HVAC UNIT CONTROLLER
Sensors – Supply and Return (LAT)
2. Install the LV AIR sensor (
LAT
) in the supply duct ahead of the
1. Install the RA sensor (
LAT
) in the return duct, ahead
RMOD to ON from S1, and press the ADR button. To change the
address from 92, continue to hold the ADR button; and press the UP
1. Set the address for the RMOD (92, 93, 94 or 95) by switching the
5. Set the FAN jumper tab (JPR1) on the center and lower pin (AUTO) for
2. The RMOD is powered by the Command Center transformer
by daisy chaining the 24vac from Command Center to the RMOD .
You will need to properly size the transformer to the total number
of dampers on the system.
with 18 AWG thermostat wire.
3. When the sensor leads are too short, you may extend the wire
3. Constant display indicates supply air temperature. Rotate R52 to
pressed simultaneously. Rotate R45 to adjust the calibration, while
4. Connect the RMOD outputs to the HVAC system.
5. If Emergency Heat is to be controlled by a remote switch, wire a SPST
3. Connect the Supply Air sensor to the LV Air terminal screw block.
2. Connect the Return Air sensor to the RA terminal screw block.
NOTE: The twisted pair communication wire cannot be installed with
1. Connect the twisted pair communication wires to RX and TX (Belden
shielded twisted pair (Belden 8450) if there is any potential
for electrical interference.