GAS￿

SUPPLY

MANUAL￿ SHUTOFF￿ VALVE￿ (REQUIRED)

SEDIMENT￿

TRAP

UNION

Fig. 13—Typical Gas Pipe Arrangement A89414

EAC - ELECTRONIC￿ AIR CLEANER￿

(115-VAC 1 AMP MAX)

NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, the furnace control status LED will flash rapidly and prevent heating operation.

→The cabinet must have an uninterrupted or unbroken ground according to NEC ANSI/NFPA 70-1996 and Canadian Elec- trical Code CSA C22.1 or local codes to minimize personal injury if an electrical fault should occur. This may consist of electrical wire or conduit approved for electrical ground when installed in accordance with existing electrical codes. Do not use gas piping as an electrical ground.

24-V WIRING

Refer to ESD Precautions Procedure before proceeding with 24-v connections.

Make field 24-v connections at the 24-v terminal block. (See Fig. 14.) Connect terminal Y/Y2 as shown in Fig. 15 or 16 for proper operation in cooling mode. Use AWG No. 18 color-coded, copper thermostat wire only.

When furnace is installed in horizontal position with RH discharge air, 24-v wire connections can be made easier by removing the 2 control box mounting screws and letting control box turn so that 24-v screw terminals are visible. Be sure to reinstall control box after connections are made.

The 24-v circuit contains an automotive-type, 3-amp fuse located

7 8 9

4 5 6

1 2 3

PR2

L2

COM

EAC-2

EAC-1

PARK

 

 

PR1

L1

HI-COOL

HI-GAS￿ -HEAT

LO-GAS￿ -HEAT

 

 

FU1 3

 

 

 

 

 

 

SEC-1

SEC-2

 

 

 

 

 

10

11

12

 

 

 

 

 

7

8

9

 

 

 

 

 

4

5

6

 

 

 

 

 

1

2

3

MASTER

1

3-AMP￿

FUSE

LED -￿

DIAGNOSTIC￿ LIGHT

TWIN / TEST￿

TERMINAL

on main control. Any 24-v electrical shorts during installation, service, or maintenance could cause this fuse to blow. If fuse replacement is required, use ONLY a 3-amp fuse. The control will flash code 24 when fuse needs replacement.

ACCESSORIES

1. Electronic air cleaner (EAC)

A terminal block (EAC-1 [hot] and EAC-2 [neutral]) is

 

 

 

TWIN￿ TEST

LED

 

 

 

 

1

 

 

 

 

HUM

 

 

 

 

G

 

 

 

 

W/W1Y/Y2 R

 

 

 

OFF

COM￿ 24V

4

3

2

1

 

 

 

 

ON

W2

 

 

 

 

HUM -￿

HUMIDIFIER￿ (24-VAC 0.5￿

AMP MAX)

24-VOLT￿

THERMOSTAT￿ TERMINALS

provided for EAC connection. (See Fig. 14.) The terminals are

energized with 115v, 1-amp maximum during blower motor

operation.

2. Humidifier (HUM)

Screw terminals (HUM-1 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.

FURNACE AND￿

BLOWER OFF DELAY￿

SETUP SWITCHES

Fig. 14—Control Center

A93348

 

Step 8—Electrical Connections

115-V WIRING

Refer to unit rating plate or Table 6 for equipment electrical requirements. The control system requires an earth ground for proper operation.

Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire.

→Make all electrical connections in accordance with the current edition of the National Electrical Code (NEC) ANSI/NFPA 70-1996 and any local codes or ordinances that might apply. For Canadian installations, all electrical connections must be made in accordance with CSA C22.1 Canadian Electrical Code or authori- ties having jurisdiction.

Step 9—VENTING

→Refer to National or Local Installation Code such as; National Fuel Gas Code NFPA No. 54-1996/Z223.1-1996, or the Canadian Installation Code, CAN B149.1- and .2-M95, for proper vent sizing and installation requirements. Use enclosed Venting Tables for Category I Fan-Assisted Furnaces for quick, easy reference. The horizontal portion of the venting system shall maintain a minimum of 1/4-in. upward slope per linear ft, 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 10—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 be no less than 0.16 psig (4.5-in. wc).

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 24-v terminal block on control. (See Fig. 14.)

10

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Carrier 58TMA operating instructions Wiring, Accessories
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58TMA specifications

The Carrier 58TMA is a high-efficiency gas furnace designed to provide reliable heating solutions for residential spaces. As part of Carrier's extensive range of heating products, the 58TMA series exemplifies innovation in home comfort technology, offering advanced features that cater to both performance and energy savings.

One of the standout features of the Carrier 58TMA is its variable-speed blower motor. This technology allows for precise airflow control, ensuring consistent temperatures throughout the home while minimizing energy consumption. The variable-speed operation also contributes to quieter operation, enhancing indoor comfort without the disruptive noise commonly associated with traditional furnaces.

The furnace operates with a multi-stage gas valve, enhancing its efficiency. With the ability to modulate heating output based on demand, the 58TMA ensures that the home is heated only as needed. This not only improves energy efficiency but also maintains a more stable and comfortable indoor environment. The combination of the multi-stage gas valve and variable-speed blower results in significant energy cost savings for homeowners.

Another impressive aspect of the Carrier 58TMA is its high Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE of up to 96%, this gas furnace is engineered to convert a majority of the fuel it consumes into heat, reducing waste and lowering utility bills. Such efficiency ratings make the 58TMA an attractive option for eco-conscious consumers looking to minimize their carbon footprint.

In addition to efficiency and performance, the Carrier 58TMA is designed with durability in mind. The unit features a robust cabinet made from high-quality materials, along with an advanced heat exchanger that ensures long-lasting performance. Moreover, it comes equipped with an advanced electrical ignition system, providing reliable start-up under various conditions without the need for a pilot light.

For added convenience, the 58TMA can be integrated with Carrier's Smart Thermostat technology. This allows homeowners to monitor and adjust their heating settings remotely, facilitating an optimized comfort experience while further enhancing energy savings.

Overall, the Carrier 58TMA's combination of efficiency, advanced technology, and durability makes it a standout option in the market for homeowners seeking dependability and energy savings in their heating solutions. With its innovative features and user-friendly operation, the 58TMA represents a significant advancement in modern furnace design, providing peace of mind and comfort year after year.
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