Carrier WeatherMaker 48TC 04, Руководство по установке

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Fig. 59 — PremierLink Filter Switch Connection
When the filter switch’s NO contact set closes as filter pres-
sure drop increases (indicating dirt-laden filters), the input sig-
nal to PremierLink causes the filter status point to read
“DIRTY”.
Using Filter Timer Hours — Refer to PremierLink Installa-
tion, Start-up, and Configuration Instructions for instructions
on using the PremierLink Configuration screens and on unit
alarm sequence.
Supply Fan Status Switch — The PremierLink control can
monitor supply fan operation through a field-supplied/installed
differential pressure switch. This sequence will prevent (or in-
terrupt) operation of unit cooling, heating and economizer
functions until the pressure switch contacts are closed indicat-
ing proper supply fan operation.
Install the differential pressure switch in the supply fan sec-
tion according to switch manufacturer’s instructions. Arrange
the switch contact to be open on no flow and to close as pres-
sure rises indicating fan operation.
Connect one side of the switch’s NO contact set to CTB’s
THERMOSTAT-R terminal. Connect the other side of the NO
contact set to TB1-8. Setpoint for Supply Fan Statuses set at the
switch. See Fig. 60.
Fig. 60 — PremierLink Wiring Fan Pressure Switch
Connection
Remote Occupied Switch — The PremierLink control per-
mits a remote time-clock to override the control’s on-board oc-
cupancy schedule and place the unit into Occupied mode. This
function may also provide a “Door Switch” time delay function
that will terminate cooling and heating functions after a 2-20
minute delay.
Connect one side of the NO contact set on the timeclock to
CTB’s THERMOSTAT-R terminal. Connect the other side of
the timeclock contact to the unit’s TB1-2 terminal (see
Fig. 61).
Fig. 61 — PremierLink Wiring Remote Occupied
Refer to PremierLink Installation, Start-up, and Config-
uration Instructions, for additional information on configuring
the PremierLink control for Door Switch timer function.
Power Exhaust (Output) — Connect the accessory Power Ex-
haust contactor coil(s) per Fig. 62.
Fig. 62 — PremierLink Power Exhaust Output
Connection
NOTE: The Power Exhaust and Humidi-MiZer ® options
can not be used with PremierLink controller at the same
time as both options require connection at TB1-15 (AUX
OUT).
CCN Communication Bus — The PremierLink controller
connects to the bus in a daisy chain arrangement. Negative pins
on each component must be connected to respective negative
pins, and likewise, positive pins on each component must be
connected to respective positive pins. The controller signal pins
must be wired to the signal ground pins. Wiring connections
for CCN must be made at the 3-pin plug.
At any baud (9600, 19200, 38400 baud), the number of con-
trollers is limited to 239 devices maximum.
Bus length may not exceed 4000 ft, with no more than 60
total devices on any 1000-ft section. Optically isolated RS-485
repeaters are required every 1000 ft.
NOTE: Carrier device default is 9600 band.
Communications Bus Wire Specifications — The CCN
Communication Bus wiring is field-supplied and field-in-
stalled. It consists of shielded 3-conductor cable with drain
(ground) wire. The cable selected must be identical to the CCN
Communication Bus wire used for the entire network.
See Table 28 for recommended cable.
Table 28 — Recommended Cables
NOTE: Conductors and drain wire must be at least 20 AWG,
stranded, and tinned copper. Individual conductors must be
insulated with PVC, PVC/nylon, vinyl, Teflon, or polyeth-
ylene. An aluminum/polyester 100% foil shield and an outer
jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a
minimum operating temperature range of –4°F to 140°F
(–20°C to 60°C) is required. Do not run communication
wire in the same conduit as or next to any AC voltage wir-
ing.
The communication bus shields must be tied together at
each system element. If the communication bus is entirely
within one building, the resulting continuous shield must be
connected to ground at only one single point. If the communi-
cation bus cable exits from one building and enters another
building, the shields must be connected to the grounds at a
lightning suppressor in each building (one point only).
Connecting CCN Bus
NOTE: When connecting the communication bus cable, a
color code system for the entire network is recommended to
simplify installation and checkout. See Table 29 for the recom-
mended color code.
R
TB1
J4-4
PL
Filter S witch (NO, clo s e on ri s ing pre ssu re (high drop))
CTB
Thermo s t a t
10
R
8
TB1
J4-6
PL
F a n (Pre ssu re) S witch (NO, clo s e on ri s e in pre ssu re)
CTB
Thermo s t a t
R
2
TB1 PL
Time Clock
Remote Occ u pied
CTB
Thermo s t a t
J4-12
MANUFACTURER CABLE PART NO.
Alpha
2413 or 5463
American
A22503
Belden
8772
Columbia
02525
J 8 - 3
15
C
TB1 PL
PEC
TAN
GRA
Power Exh aus t
CTB
THERMO S TAT