To Light Unit

(Units with Electro-Mechanical Control)

1.Do not turn off the electrical power to unit without first turning off the gas supply.

2.Before attempting to start the gas heating section, familiarize yourself with all the procedures that must be followed.

3.Never attempt to manually light the burners on the unit with a match, lighter, or any other flame. If the electric sparking device fails to light the burners, refer to the shutdown procedures, then call your dealer as soon as possible.

If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, injury, or loss of life.

See Fig. 1 for location of gas valve. Refer to Fig. 2 while proceeding with the following steps.

Step 1 — Set room thermostat to the lowest temperature setting and set SYSTEM switch to OFF position.

Step 2 — Close the shutoff valve on the gas supply piping.

Step 3 — Turn off the electrical supply to the unit and install lockout tag.

Step 4 — Open the heat section access panel.

Step 5 — Move ON/OFF switch on the internal main gas valve to the OFF position and wait 5 minutes.

Step 6 — Move ON/OFF switch on internal main gas valve to ON position.

Step 7 — Close the heat section access panel.

Step 8 — Remove lockout tag and turn on the electrical supply to unit.

Step 9 — Open the shutoff valve on the gas supply piping.

Step 10 — Set room thermostat selector slightly above room temperature and set system switch to HEAT position to start the unit. The induced-draft combustion air fan will start. Main burners light within 30 seconds. Indoor blower will start within 60 to 90 seconds of main gas ignition.

INDUCED

DRAFT

MOTOR

COMBUSTION

FAN HOUSING

MAIN GAS

VALVE

HEAT EXCHANGER	MAIN BURNER SECTION
SECTION

Fig. 1 — Typical Gas Heating Section

Step 11 — Set the temperature selector on room thermostat to desired setting.

If the main burners fail to light, or the blower fails to come on, shut down gas heating section and call your dealer for service. Failure to follow these requirements could result in serious personal injury.

TO LIGHT UNIT

(Units With ComfortLink™ Control)

1.Do not turn off the electrical power to unit without first turning off the gas supply.

2.Before attempting to start the gas heating section, familiarize yourself with all the procedures that must be followed.

If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, injury, or loss of life.

See Fig. 1 for location of gas valve. Refer to Fig. 3 while proceeding with the following steps.

Step 1 — Turn off the unit by using the Scrolling Marquee to put the unit into Service Test mode. The Scrolling Marquee is located on the front of the unit control box behind the control box and compressor access door. Thermostat inputs and remote network commands are ignored when Service Test mode is ON.

a. A password may be required to change Service Test values depending on previous settings configured in the unit. Default password is “1111.”

b.Press the ESCAPE key until a blank screen is shown.

c.Use the arrow keys to scroll the red LED on the display to the “Service Test” position and press ENTER .

d.The control will display the Field Service Test Mode (TEST) setting. Press ENTER once to select the TEST setting for configuration. Press ENTER again for “OFF” to begin flashing.

e.Use the arrow keys to change the configuration from “OFF” to “ON,” then press ENTER and ESCAPE to save the setting.

Step 2 — Close the shutoff valve on the gas supply piping.

Step 3 — Turn off the electrical supply to the unit and install lockout tag.

Step 4 — Open the heat section access panel.

Step 5 — Move ON/OFF switch on the internal gas valve to the OFF position and wait 5 minutes.

Step 6 — Move ON/OFF switch on internal gas valve to ON position.

Step 7 — Close the heat section access panel.

48PG03---16 specifications

The Carrier 48PG03---16 is a standout model in the realm of commercial rooftop air conditioning units, offering innovative technology and exceptional performance for a variety of applications. Designed with rigorous industry standards in mind, this unit combines efficiency, durability, and advanced features, making it a popular choice for both small and medium-sized commercial buildings.

One of the main features of the 48PG03---16 is its impressive cooling capacity, which allows it to effectively regulate indoor temperatures even in the hottest climates. The unit boasts a nominal cooling capacity of 3 tons, making it suitable for spaces that require consistent cooling throughout the hot months. Its effective cooling is complemented by an energy-efficient design that uses advanced refrigeration technology to maximize performance while minimizing energy consumption.

This Carrier model is equipped with a high-efficiency scroll compressor, which contributes to its reliability and overall low operational noise. The use of scroll compression technology ensures smooth operation and reduces the risk of mechanical failure, making this unit a long-term investment for building owners. Additionally, the 48PG03---16 features a robust heat exchanger designed to optimize heat transfer efficiency and ensure reliable performance across a wide range of outdoor conditions.

In terms of controls and management, the Carrier 48PG03---16 allows for advanced programmability, facilitating better temperature control and energy management. The unit can be easily integrated with smart building technologies, enabling users to monitor and adjust settings remotely for enhanced convenience and efficiency.

Durability is another hallmark of the Carrier 48PG03---16. Constructed with weather-resistant materials and equipped with a protective cover for critical components, this unit can withstand various environmental factors, including moisture and debris. Its compact design also makes it an ideal fit for rooftop installations, saving valuable ground space.

In summary, the Carrier 48PG03---16 embodies a blend of performance, efficiency, and durability tailored for commercial applications. With its advanced technologies, user-friendly controls, and robust construction, it not only meets but exceeds the expectations of building owners and facility managers looking for a reliable HVAC solution. Whether for retail spaces, office buildings, or larger facilities, the Carrier 48PG03---16 remains a top contender in commercial air conditioning.