11
In the case of equipment other than the Central Hub, the update is sent over
the RS-485 communication link to the Mag-Mount / Local Display, or over the
RS-Bus to the RTU or other connected equipment.
In the case of updates to the Central Hub, the update is loaded into internal
flash memory and the Central Hub processor is restarted. HVAC operation is
not affected during the Central Hub processor restart – everything that was
going on before the restart continues during and after the restart.
If the same flash drive is again inserted into the USB port on the Central Hub,
or if a different flash drive containing the same iCON update is inserted, the
Central Hub will take no action because the image on the flash drive is not
newer than what is already installed.
10. Installation Recommendations
WARNING
Improper installation, adjustment, alteration, ser vice or maintenance can
cause property damage, personal injury or loss of life.
Installation and service must be performed by a li censed professional HVAC
installer (or equivalent) or a service agency.
Before beginning installation, note the type of equipment, number of stages,
and any accessories being installed.
Do
•
Read this entire document, noting which procedures pertain to your specific
equipment and system requirements.
• Make sure that all wiring conforms to local and national building and electrical
codes and ordinances.
Do Not
•
Install on voltages higher than 30VAC.
•
Short (jumper) across terminals on the gas valve or at the system controls to
test installation. This will damage the thermostat and void the warranty.
•
Exceed 300 feet (91 meters) run when using 18 #AWG thermostat wire or
larger.
• Allow power load from any thermostat connection to be more than 1 AMP.
11. Central Installation, External Components, LEDs and
Terminals
11.1. Installation
a.
Things to consider when installing the Central Hub:
• Install near the indoor unit such that there is a direct path to the
approximate location of the home Wi-Fi access point (the signal is not
blocked by the indoor unit or duct work, for example).
•
Can be attached to a vertical surface such as a wall stud or roof truss
web, or to a horizontal surface such as a floor or ceiling joist, or a roof
rafter.
• Central Hub antenna should be positioned such that it is roughly
vertical, no matter the orientation of the Central Hub, itself.
• Do not install the Central Hub on the indoor unit, duct work, or other
equipment that could induce vibration in the Central Hub
• Do not install the Central Hub on or near large metal objects. This could
adversely affect the range and directional coverage of the Central Hub
Wi-Fi signal.
• If the Central Hub MUST be installed on a metal object, orientate the
antenna perpendicular to the metal surface.
• In all cases, the Central Hub antenna orientation may need to be
adjusted to obtain best Wi-Fi results.
b.
Use the following procedure outlined in “Figure 2. Central Hub Installation”
on page 12.
c.
For low voltage wiring connections use diagrams in section titled “14.
Connecting Low Voltage Wiring” on page 17.
