Venting; Start-Up, Adjustment, And Safety Check; General - Carrier 58TUA Installation, Start-Up, And Operating Instructions Manual

VOLTS—
UNIT SIZE HERTZ—
PHASE
040-12 115—60—1
060-08 115—60—1
060-12 115—60—1
080-14 115—60—1
080-16 115—60—1
100-12 115—60—1
100-16 115—60—1
100-20 115—60—1
120-16 115—60—1
120-20 115—60—1
135-20 115—60—1
* Permissible limits of the voltage range at which the unit will operate satisfactorily.
† Time-delay fuse is recommended.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
BLK BLK
WHT WHT
GND
115-VOLT FIELD- JUNCTION
SUPPLIED BOX
FUSED
DISCONNECT
Fig. 8—Heating and Cooling Application Wiring Diagram 1-Stage Thermostat and Condensing Unit
Screw terminals (HUM and Com) are provided for 24-v
humidifier connection. The terminals are energized with 24v,
0.5-amp maximum when the gas valve is energized.
Step 7— Venting
Refer to the enclosed Installations Instructions, GAMA venting
table for Category I furnaces, and QUIK•VENT™ table for 1- and
2- stage Category I fan-assisted furnaces. In Canada use venting
tables found in CAN/CGA B149.1 or .2. The horizontal portion of
the venting system shall maintain a minimum of 1/4-in. upward
slope per linear ft (away from furnace), and it shall be rigidly
supported every 5 ft or less with hangers or straps to ensure that
there will be no movement after installation.
Step 8—Start-Up, Adjustment, and Safety Check

GENERAL

The furnace must have a 115-v power supply properly connected
and grounded. Correct polarity must be maintained to enable gas
heating operation.
The gas service pressure must not exceed 0.5 psig (14-in. wc), and
no less than 0.16 psig (4.5-in. wc).
Table 5—Electrical Data
OPERATING
VOLTAGE RANGE
Max* Min*
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
W
FOUR
WIRE
TWO-WIRE
HEATING-
ONLY
W2
COM
W/W1
Y/Y2
R
CONTROL
G
BOX
24-VOLT
TERMINAL
BLOCK
NOTE: Connect Y-terminal as
FURNACE
MAX MIN
UNIT WIRE
AMPS GAGE
10.9 14
8.2 14
11.4 14
11.7 14
13.5 14
10.5 14
13.2 14
19.0 12
13.2 14
18.2 12
17.4 12
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
1-STAGE
THERMOSTAT
Y R G
TERMINALS
CONDENSING
UNIT
NOTE: If any of the original wire,
shown for proper
operation.
Thermostat wire connections at R and W/W1 are the minimum
required for gas heating operation. W2 must be connected for
2-stage heating thermostats. Com, Y/Y2, and G are required for
cooling, heat pumps, and some clock thermostats. These must be
made at the 24-v terminal block on the control. (See Fig. 10.)
This furnace can be installed with either a single-stage heating or
a 2-stage heating thermostat.
For single-stage thermostats, connect thermostat R to W/W1 at the
furnace control terminal block. (See Fig. 8.) For single-stage
thermostats, the control will determine, based on length of previ-
ous heating on and off cycles, when to operate in low- and
high-gas heat for optimum comfort. Setup switch-2 (SW-2) must
be in the factory-shipped OFF position. See Fig. 11 and Tables 6
and 7 for setup switch information.
If a 2-stage heating thermostat is to be used, move SW-2 to the ON
position at the end of the furnace installation. This overrides the
built-in control process for selecting high and low fire and allows
the 2-stage thermostat to select gas heating modes. The W2 from
the thermostat must be connected to W2 on the control terminal
block. (See Fig. 9.)
8
MAX FUSE OR
MAX WIRE
HACR-TYPE
LENGTH (FT)‡
CKT BKR AMPS†
34
45
32
31
27
35
28
30
28
31
33
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
GND
as supplied, must be replaced, use
same type or equivalent wire.
15
15
15
15
15
15
15
20
15
20
20
A93378