268890-UIM-B-0607

APPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW

To determine the approximate airflow of the unit with a filter in place, fol- low the steps below:

1.Select the filter type.

2.Determine the External System Static Pressure (ESP) without the filter.

3.Select a filter pressure drop from the table based upon the number of return air openings or return air opening size and add to the ESP from Step 2 to determine the total system static.

4.If total system static matches a ESP value in the airflow table (i.e. 0.20, 0.60, etc,) the system airflow corresponds to the intersection of the ESP column and Model/Blower Speed row.

5.If the total system static falls between ESP values in the table (i.e. 0.58, 0.75, etc.), the static pressure may be rounded to the nearest value in the table determining the airflow using Step 4 or calculate the airflow by using the following example.

Example: For a 120,000 Btuh furnace operating on high speed blower, it is found that total system static is 0.58" w.c. To determine the system airflow, complete the following steps:

1.Obtain the airflow values at 0.50" & 0.60" ESP.

Airflow @ 0.50": 2152 CFM

Airflow @ 0.60": 2042 CFM

2.Subtract the airflow @ 0.50" from the airflow @ 0.60" to obtain air- flow difference.

2042 - 2152 = -110 CFM

3.Subtract the total system static from 0.50" and divide this differ- ence by the difference in ESP values in the table, 0.60" - 0.50", to obtain a percentage.

(0.58 - 0.50) / (0.60 - 0.50) = 0.8

4.Multiply percentage by airflow difference to obtain airflow reduc- tion.

(0.8) x (-110) = -88

5.Subract airflow reduction value to airflow @ 0.50" to obtain actual airflow @ 0.58" ESP.

2152 - 88 = 2064

 

FIELD INSTALLED ACCESSORIES - NON-ELECTRICAL

MODEL NO.

DESCRIPTION

USED WITH

1NP0347

PROPANE (LP) CONVERSION KIT

ALL MODELS

1CT0302

CONCENTRIC INTAKE/VENT 2”

ALL MODELS EXCEPT 120 MBH

1CT0303

CONCENTRIC INTAKE/VENT 3”

ALL MODELS

1PS0904

 

40

1PS0901

HIGH ALTITUDE PRESSURE SWITCH KIT

60/100/120

 

(Does Not Include Orifices)

 

1PS0902

80/1200

1PS0903

 

80/1600

1NK0301

CONDENSATE NEUTRALIZER KIT

ALL MODELS

1HT0901

SIDEWALL VENT TERMINATION KIT 3”

ALL MODELS

1HT0902

SIDEWALL VENT TERMINATION KIT 2”

ALL MODELS

1CB0314

COMBUSTIBLE FLOOR BASE

14-1/2” CABINET

 

These kits are required in downflow application when using G*F*

 

1CB0317

17-1/2” CABINET

 

series coils. These kits are not required with MC/FC series coils,

 

1CB0321

21” CABINET

but please ensure that the coil and furnace are secured and that

1CB0324

24 1/2” CABINET

there are noair leaks.

 

 

 

1TK0914

 

14-1/2” CABINET

1TK0917

COIL TRANSITION KIT

17-1/2” CABINET

1TK0921

21” CABINET

 

1TK0924

 

24 1/2” CABINET

1VK0901

3-WAY TRANSITION KIT

All MODELS

38

Unitary Products Group

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Image 38
York GF9S*DH Applying Filter Pressure Drop to Determine System Airflow, Field Installed Accessories NON-ELECTRICAL
Page 37 Page 39

GF9S*DH, GY9S*DH, GM9S*DH specifications

The York GM9S*DH, GF9S*DH, and GY9S*DH series air conditioning systems are known for their robust performance, reliability, and energy efficiency. These models are well-suited for both residential and light commercial applications, making them versatile options for a range of users.

One of the standout features of these systems is their high efficiency. The GM9S*DH is equipped with advanced heating and cooling technologies that allow it to achieve excellent SEER (Seasonal Energy Efficiency Ratio) ratings. This translates to lower energy consumption and reduced utility bills for homeowners and business operators alike. The GF9S*DH model further enhances this efficiency by incorporating variable-speed blowers that adjust airflow based on specific needs, ensuring that the system operates only as necessary.

Reliability is another key characteristic of the York GM9S*DH, GF9S*DH, and GY9S*DH series. These models are engineered with durable components and rigorous performance testing, which contributes to their long lifespan and minimizes the need for repairs. Moreover, they come with robust warranties that provide peace of mind for consumers.

In terms of technology, these units utilize a smart thermostat feature that allows for precise temperature control and programmable settings. This feature not only enhances comfort but also contributes to energy savings by allowing users to set optimal cooling or heating schedules. The systems are also designed with quiet operation in mind, employing sound-dampening features that minimize noise levels, which is particularly beneficial for residential installations.

The installation of the York GM9S*DH, GF9S*DH, and GY9S*DH systems is straightforward, offering flexibility in placement and integration with various home or office setups. Their compact design allows them to fit seamlessly into different environments without compromising on performance.

Additionally, the systems are equipped with advanced filtration options that improve indoor air quality by capturing allergens and pollutants. This is particularly beneficial for families with children or members who suffer from allergies.

Overall, the York GM9S*DH, GF9S*DH, and GY9S*DH series provide exceptional performance, energy efficiency, and reliability, making them an ideal choice for maintaining a comfortable indoor environment. With their cutting-edge technologies and user-friendly features, these systems represent an excellent investment for anyone looking to enhance their heating and cooling experience.
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