Carrier 12 Installation And Service Instructions Manual page 12

Fig. 14 — Conduit Installation
DISCONNECT EMT OR RIGID
MOUNTING CONDUIT
LOCATION (FIELD-
MAIN
SUPPLIED)
CONTROL
BOX
SINGLE SINGLE POINT CONTROL WIRE
POINT BOX MOUNTING TERMINAL
BOX SCREWS BLOCK
Fig. 15 — Component Location
FIELD CONTROL WIRING — Install a Carrier-approved
accessory thermostat assembly according to installation in-
structions included with the accessory. Locate thermostat as-
sembly on a solid wall in the conditioned space to sense av-
erage temperature in accordance with thermostat installation
instructions.
Route thermostat cable or equivalent single leads of col-
ored wire from subbase terminals to low-voltage connec-
tions on unit (shown in Fig. 16) as described in Steps 1-4
below.
NOTE: For wire runs up to 15 m (50 ft), use no. 18 AWG
(American Wire Gage) insulated wire (35 C minimum). For
Heater kW Anticipator Setting
9.5 0.3
14.6 0.3
22.7 0.6
29.3 0.6
38.8 0.9
43.9 0.9
*Requires 2 heater packages.
BRACKET AND MANUAL RESET
CONDUIT DRIP LIMIT SWITCH
BOOT LOCATION
(HIDDEN)
CENTER POST
HEATER
COVERS
HEATER
WIRING
LABEL
HEATER
MOUNTING
BRACKET
HEATER HEATER
MODULE MODULE
(LOCATION 1) (LOCATION 2)
Table 4 — Unit Voltage
220
Part No. 50DJ901—
711
601
611
621
711, 621*
711, 621*
15 to 23 m (51 to 75 ft), use no. 16 AWG insulated
wire (35 C minimum). For over 23 m (75 ft), use no. 14
AWG insulated wire (35 C minimum). See Table 3 for wire
conversions.
1. If unit is mounted on roof curb and accessory thru-the-
curb service plate connection is used, route wire through
connection plate.
2. Pass control wires through the hole provided on unit (see
connection D, Connection Sizes table, Fig. 5).
3. Feed wire through the raceway built into the corner post
to the 24-v barrier located on the left side of the control
box. See Fig. 17. The raceway provides the UL (U.S.A.
Standard) required clearance between high- and low-
voltage wiring.
4. Connect thermostat wires to screw terminals of low-
voltage connector. The connector plugs into the control
board and may be removed to make connection. Plug con-
nector back into the control board after making connec-
tion or unit will not operate.
HEAT ANTICIPATOR SETTINGS — Set first-stage heat an-
ticipator settings at 1.0. Set second-stage heat anti-
cipator settings at 0.6. For units with optional electric heat,
set anticipator for second stage as shown in Table 4.
Table 3 — American/European Wire Conversions
AMERICAN
Industry
Standard Size
18 AWG
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
3 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
250 kcmil
300 kcmil
350 kcmil
400 kcmil
500 kcmil
600 kcmil
LEGEND
AWG — American Wire Gage
kcmil — Thousand Circular Mils
Heater kW Anticipator Setting
10.5
12.5
21.0
25.0
31.5
37.5
12
EUROPEAN
American Industry
Conversion Standard
2
(mm ) Size (mm
0.82
1.30
2.08
3.30
5.25
6.36
13.29
21.14
26.65
33.61
42.39
53.49
67.42
85.00
107.19 120.0
126.64 150.0
151.97
177.90 185.0
202.63 240.0
253.29 300.0
303.95
400
Part No. 50DJ901—
0.3 681
0.3 631
0.3 641
0.3 651
0.6 681, 641*
0.6 631, 651*
2
)
1.0
1.5
2.5
4.0
6.0
10.0
16.0
25.0
—
35.0
50.0
—
70.0
95.0
—
—