PRODUCT DESIGN

Thermostats:

It is recommended that a single-stage heat, non-power robbing thermostat be used. Refer to the product marketing literature for a complete list of thermostats offered.

THERMOSTATS

Thermostat

Man/Auto

Programmable

Cool

Heat

Batt. Powered

Batt. Bkup

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1213406*

Man. Or Auto

Yes

2

3

No

No

 

 

 

 

 

 

 

1213407

Man. Changeover

Yes

2

2

Yes

Yes

 

 

 

 

 

 

 

1213411

Man. Changeover

No

2

2

Yes

No

 

 

 

 

 

 

 

*1213406 is the recommended model for the G*S* furnaces when used with a heat pump in a fossil fuel application.

It is NOT for use with the G*S8 as a sole heating source. 1213406 thermstats are 24V powered with battery

Filters: backup.

Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty

Upflow Filters

SIDE RETURN

 

Cabinet

Nominal

Approx.

 

 

Width

Filter Size

Flow Area

 

 

(in.)

(in.)

(in2)

 

 

 

 

 

 

 

All

16 x 25 x 1

400

 

 

 

 

 

 

BOTTOM RETURN

Cabinet

Nominal

Approx.

Width

Filter Size

Flow Area

(in.)

(in.)

(in2)

 

 

 

17-1/2

14 x 25 x 1

350

21

16 x 25 x 1

400

24-1/2

20 x 25 x 1

500

 

 

 

Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere in the duct system such as a central return.

MINIMUM FILTER SIZES for DISPOSABLE FILTERS

FURNACE INPUT

FILTER SIZE

40M

320 in2

60M

483 in2

80M

640 in2

100M

800 in2

120M

738 in2

140M

738 in2

DISPOSABLE NOMINAL 300 F.M. FACE VELOCITY

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Goodman Mfg RT6621031r2, GMS8 33-3/8 GAS FURNACE UNITS service manual Furnace Input Filter Size

RT6621031r2, GMS8 33-3/8 GAS FURNACE UNITS specifications

Goodman Manufacturing is renowned for delivering reliable and efficient HVAC systems, and the RT6621031R2 GMS8 Gas Furnace is no exception. This gas furnace is specifically engineered for residential heating needs, ensuring comfort in various climates. Its design is both effective and energy-efficient, making it a popular choice among homeowners.

One of the main features of the GMS8 furnace is its two-stage heating capability. This technology allows the unit to operate at two different levels of heating output, which helps maintain a more consistent temperature within the home. During milder temperatures, the furnace can operate at a lower stage, saving energy while still delivering adequate warmth. On colder days, it seamlessly transitions to the higher stage, ensuring maximum comfort.

The GMS8 boasts a multi-speed blower motor, which enhances its overall efficiency and performance. This allows for variable airflow adjustments, improving air distribution throughout the home. The result is not only increased comfort but also reduced noise levels, making the operation of this furnace pleasantly quiet.

An important characteristic of the GMS8 is its durable construction, featuring a heavy-gauge steel cabinet designed to withstand harsh operating conditions. The integrated insulated blower compartment further ensures that the unit operates efficiently while minimizing heat loss. Its compact design allows for easier installation in various home configurations.

In terms of energy efficiency, the GMS8 is equipped with a 80% Annual Fuel Utilization Efficiency (AFUE) rating. This means that 80% of the gas consumed translates into usable heat, making it a cost-effective option for heating your home. Additionally, it is compatible with a range of programmable thermostats, allowing homeowners to optimize their heating schedules and further enhance energy savings.

The GMS8 furnace is also designed with safety in mind. It includes features such as an integrated self-diagnostic control board and a flame rollout switch for enhanced operational safety. The extended warranty options available also provide peace of mind, ensuring that homeowners feel secure in their investment.

In summary, the Goodman RT6621031R2 GMS8 Gas Furnace is an efficient, reliable, and durable heating solution for homes. With its two-stage heating capabilities, multi-speed blower motor, and a robust design, it stands out as a trusted choice for families seeking comfort and energy savings during the chilly months.