Carrier 48TC Manuale delle Istruzioni Scaricare il pdf (Pagina 20)

accessory. Locate the thermostat accessory on a solid wall

in the conditioned space to sense average temperature in

accordance with the thermostat installation instructions.

If the thermostat contains a logic circuit requiring 24--v

power, use a thermostat cable or equivalent single leads of

different colors with minimum of seven leads. If the

thermostat does not require a 24--v source (no “C”

connection required), use a thermostat cable or equivalent

with minimum of six leads. Check the thermostat

installation instructions for additional features which

might require additional conductors in the cable.

For wire runs up to 50 ft. (15 m), use no. 18 AWG

(American Wire Gage) insulated wire (35_C minimum).

For50to75ft.(15to23m),useno.16AWGinsulated

wire (35_C minimum). For over 75 ft. (23 m), use no. 14

AWG insulated wire (35_C minimum). All wire sizes

larger than no. 18 AWG cannot be directly connected to

the thermostat and will require a junction box and splice

at the thermostat.

Typical

Thermostat

Connections

Central

Terminal

Board

T–STAT

O/B/Y2

(see Note)

Note : Typical multi-function marking. Follow manufacturer’s configuration

instructions to select Y2.

Field Wiring

C09350

Fig. 28 -- Typical Low--Voltage Control Connections

Unit without thru--base connection kit —

Pass the thermostat control wires through the hole

provided in the end panel (see item “D” in the view

labeled “LEFT” in Fig. 1 & 2); then feed the wires

through the raceway built into the corner post to the

control box. Pull the wires over to the terminal strip on the

upper--left corner of the Central Terminal Board (CTB).

See Fig. 29.

NOTE: If thru--the--bottom connections accessory is

used, refer to the accessory installation instructions for

information on routing power and control wiring.

Heat Anticipator Settings —

Set heat anticipator settings at 0.14 amp for the first stage

and 0.14 amp for second--stage heating, when available.

RACEWAY

HOLE IN END PANEL (HIDDEN)

C08027

Fig. 29 -- Field Control Wiring Raceway

48TC*D

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Carrier 48TC Manuale delle Istruzioni Pagina 20

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