SuperGuard and Piguard Plus
|
1.09
54
12 MECHANICAL INSTALLATION GUIDE
CAUTION
The Piguard Plus must be installed by an authorized electrician. Power must
be disconnected to avoid electrical shock and damage.
CAUTION
To avoid exposing the Piguard Plus to harmful gases or high humidity, it is
recommended to install it in the service room.
NOTE:
Installation Category (Over voltage Category) II
•
The power supply to the controller should be protected by 10 amps circuit breaker
•
All electrical connections should comply with National Electrical code (NEC)
1. Screw the metal sheet on the back of the box using the 4 supplied screws. Mount the Piguard
Plus through the mounting holes (see next page).
2. Open the enclosure lid by unfastening the four screws.
3. Drill holes at bottom of the box and place cable holders.
4. Place the required cables through the cable holders at the bottom of the unit. Connect the
wires according to the wiring diagrams.
5. Make sure that you use wires large enough for the load of the variable speed.
6. To connect temperature and humidity sensors use shielded two or four conductor #18-#24
gauge cables. Connect the shields to the Ground metal strip. Do not connect the shields to more
than one point, or you may induce ground loop currents.
7. Close the Piguard Plus enclosure lid carefully and tightly. Use RTV silicon or equivalent sealant
to seal the cable holders.
8. After installation is completed, operate the Piguard Plus for a few hours and re- check for
proper operation.
12.1 Environmental Protection
Recycle raw materials instead of disposing as waste. The controller, accessories and
packaging should be sorted for environmental-friendly recycling. The plastic
components are labeled for categorized recycling.
12.2 Sensors and Shielded Wiring
•
For long shielded wires, connect the shield to ground at
one end
only.
•
From the ground terminal, run a heavy wire directly to the ground rod. It is acceptable, if
necessary, to run the heavy ground wire to the electrical service grounding system rather
than directly to the ground rod.
•
Do not use light wires for these ground connections. They must carry heavy lightning
currents, sometimes exceeding thousands of amperes. Certainly, do not use the shielding of
sensor and low voltage wiring for this purpose.
•
Ensure that all ground connections go to a single local point. When lightning strikes, grounds
a meter or two apart will be at significantly different voltages. If you have several electronic
boxes with individual grounds, connect all these together to a single point (If Possible),
preferably to the surge protector ground. This should continue to the ground rod or the
electrical service. In particular, avoid grounding any controls remotely through shield wiring.
•
Do not use shields to create a path for lightning. For long shield wires, such as building to
building runs, connect the shield to ground at
one
end
only, to reduce the chance of
conducting lightning from one building to another.
•
When splicing sensors to longer wires, ensure that the splice is
waterproof
. Use adhesive
lined heat shrink (marine grade) to make waterproof connections.
