Carrier 48TM016-028 User Manual download pdf (Page 2)

Date: Supersedes:

48TM16-028

SINGLE-PACKAGE COOLING UNIT

WITH FACTORY-INSTALLED GAS HEAT

48TM Rev.:

JOB NAME: LOCATION:

BUYER: BUYER P.O. # CARRIER #

UNIT NUMBER: MODEL NUMBER:

UNIT DESIGNATION:

PERFORMANCE DATA CERTIFIED BY: DATE:

ARI STANDARD

360

DESCRIPTION

48TM units are one-piece rooftop cooling units with gas heat. All units are pre-wired and

pre-charged with R-22 at the factory. Units are factory tested in both heating and cooling modes.

The 48TM units have bottom air openings for separate supply and return ductwork. The 48TMD

model is low heat and the 48TMF model is high heat. The 48TMM model is low heat with

stainless steel heat exchangers and the 48TMN model is high heat with stainless steel heat

exchangers. The 48TM unit is intended for installation on an accessory curb (ordered separately).

Horizontal supply and return connections are also possible with a factory-preassembled,

high-static regain, horizontal conversion adapter roof curb accessory (ordered separately).

Bottom discharge on concentric applications requires a transition duct (field-supplied) external to

the unit.

FEATURES

All units meet ASHRAE Standard 90.1.

Standard one-year product warranty.

Five-year non-prorated warranty on Alumagard™ coated Turbo-

tubular™ gas heat exchanger.

Five-year warranty on the compressor (48TM016). One year warranty

on the compressor (48TM020-028).

Units are rated in accordance with ARI standard 360. Standard unit is

certified and listed by ETL and ETL, Canada.

Low outdoor temperature cooling operation to 40 F (4 C) as standard.

Dual freezestat protection is provided as standard.

Dual scroll compressors with internal linebreak protection.

Indoor and outdoor coils constructed of aluminum fins mechanically

bonded to seamless internally grooved copper tubes.

Dual TXVs (thermostatic expansion valves) metering devices.

Liquid line filter driers provided in each refrigeration circuit.

Optional gear-driven EconoMi$er equipped with microprocessor

controller that includes CO

ventilation control capability.

Manually adjustable outside air intake for up to 25% outside air.

Automatic changeover (when used with an auto-changeover

thermostat).

Single point gas and electric connections. Disconnect in accordance

with NEC must be field-supplied and installed.

All units utilize 2-stage cooling.

Belt drive adjustable evaporator fan.

Choice of low-medium or high-static indoor fan drive capability.

Cabinet made of pre-painted, galvanized steel with baked enamel

finish.

Cooling systems have low and high-pressure switches. Two-inch

disposable type return air filters are factory installed.

Provision for alternate end return in base unit. Horizontal supply

available by using accessory curb. EconoMi$er may be used with

horizontal supply and return.

Direct drive propeller condenser fans with vertical discharge.

2-stage gas heat in a single 2-stage gas valve.

Induced draft combustion system with Hall effect sensor to detect

proper operation of induced-draft motor.

Heavy Alumagard coated heat exchangers with aluminized steel

burners.

Optional stainless steel heat exchangers.

Heating controls with solid-state direct spark ignition system (pilotless

system) and redundant gas valve. High temperature limit switches and

auto-reset flame rollout switch are standard.

Reliable IGC (integrated gas unit controller) with built in diagnostics

to determine error codes and control fan on/off delays for energy

savings and maximum comfort control.

Integrated gas unit controller provides anti-cycle protection for gas

heat operation.

PERFORMANCE DATA

Unit Operating Weight ___________________________________lb

COOLING

Gross Total Capacity _________________________________ Btuh

@ Condenser Air Temperature ___________________________ F

Gross Sensible Capacity _______________________________ Btuh

Compressor Power Input _______________________________ kW

Indoor Entering db _____________ F wb _______________ F

Airflow ___________ External Static Pressure ___________ in. wg

Indoor Fan Motor Size _________________________________ Hp

Exhaust Fan Motor Size ________________________________ Hp

Curb Weight ___________________________________________lb

HEATING

Heating Capacity:

Stage 1 ____________________________________________ Btuh

Stage 2 ____________________________________________ Btuh

Heating Capacity Total ________________________________ Btuh

Stage 1 _____________________________________________ kW

Stage 2 _____________________________________________ kW

Heating Capacity Total _________________________________ kW

1 2 3 4 5 6 7 ... 11 12

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Carrier 48TM016-028 User Manual Page 2

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