101
JOHNSON CONTROLS
FORM 100.50-EG12 (918)
4. Controls and BAS Communications
BACnet
®
MS/TP (RS-485) or Modbus
™
: The unit shall include BACnet or Modbus
communications directly from the unit controller. Equipment that is not native BACnet
at the unit control board shall include any necessary interface or translator device fac-
tory-mounted and wired within the unit. If a field-installed gateway device is required by
the manufacturer, the manufacturer shall include all necessary materials, equipment,
service and commissioning of the gateway. A control points list, BIBBs and PICS state-
ment shall be provided by the manufacturer to facilitate communications programming
with the building automation system. Programming, establishing communications and
commissioning shall be the responsibility of the installing controls contractor. Start-up
assistance and support may be purchased from the manufacturer.
Analog inputs: 0–5VDC inputs shall be provided for remote reset of supply air tem-
perature, and duct static pressure
Binary inputs: Dry (or wet) contacts shall be provided for alarm outputs for supply fan
fault, cooling/heating fault, or general/sensor faults. Contacts shall also be provided for
occupied/unoccupied (start/stop) switching; shutdown, smoke purge, exhaust or pres-
surization operations; call for cooling or heating; and for morning warm-up.
EXECUTION
Installation
General: Installing contractor shall install single package unit(s), including components
and controls required for operation, in accordance with single package unit manufactur-
er’s written instructions and recommendations. Single package units shall be installed as
specified.
1. Unit(s) specied shall include a protective covering membrane for such equipment
being shipped by truck, rail, or ship. The membrane is fully formed around the equip-
ment exterior. The membrane covers the entire top, side and end panel surface as
to protect the product effectively during shipping and storage including long term
storage. Storing on job-site shall no longer require the unit(s) to be covered with a
tarp as long as the covering membrane has not been removed.
2. All size or shape equipment including electrical components, especially those not
built with weatherproof enclosures, VFDs, and end devices shall be effectively cov-
ered for protection against rain, snow, wind, dirt, sun fading, road salt/chemicals,
rust, and corrosion during shipping cycle. Equipment shall remain clean and dry.
3. Manufacturers of units not having a protective membrane, fully formed around the
equipment exterior, covering the entire top, side and end panel surface area shall
be required to ship equipment covered with a tarp, in crating or in a closed truck as
is necessary to ensure product protection from road salt/chemicals damage, mois-
ture and dirt inltration. Arrangements for long term storage at the job site shall be
required.
Location: Locate the single package unit as indicated on drawings, including cleaning
and service maintenance clearance per Manufacturer instructions. Adjust and level the
single package unit on support structure.
INSPECTION AND START-UP SUPERVISION
A factory-trained service representative of the manufacturer shall supervise the unit start-
up and application specific calibration of control components.
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