246756-CTG-C-0407

APPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW

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

1.Select the filter type.

2.Select the number of return air openings or calculate the return opening size in square inches to determine the proper filter pressure drop.

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

4.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 3 to determine the total system static.

5.If total system static matches a ESP value in the airflow table (i.e. 0.20 w.c. (50 Pa), 0.60 w.c. (150 Pa), etc,) the system airflow corresponds to the intersection of the ESP column and Model/Blower Speed row.

6.If the total system static falls between ESP values in the table (i.e. 0.58 w.c. (144 Pa), 0.75 w.c. (187 Pa), etc.), the static pressure may be rounded to the nearest value in the table determining the airflow using Step 5 or calcu- late the airflow by using the following example.

Example: For a 60,000 BTUH (17.58 kW) furnace with a bot- tom return opening and 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:

Obtain the airflow values at 0.50 w.c. (125 Pa) & 0.60 w.c. (150 Pa) ESP.

Airflow @ 0.50”: 1250 CFM (35.4 m3/min)

Airflow @ 0.60”: 1180 CFM (33.4 m3/min)

Subtract the airflow @ 0.50 w.c. (125 Pa) from the airflow @ 0.60 w.c. (150 Pa) to obtain airflow difference.

1180 - 1250 = -70 CFM (-12 m3/min)

Subtract the total system static from 0.50 w.c. (125 Pa) and divide this difference by the difference in ESP values in the

table, 0.60 w.c.

(150 Pa) - 0.50 w.c. (125 Pa), to obtain a

percentage.

 

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

Multiply percentage by airflow difference to obtain airflow reduction.

(0.8) X (-70) = -56

Subtract airflow reduction value to airflow @ 0.50 w.c. (125 Pa) to obtain actual airflow @ 0.58 in. w.c. (144 Pa) ESP.

1250 - 56 = 1194

ACCESSORIES

PROPANE (LP) CONVERSION KIT - 1NP0347 - All units

This accessory conversion kit may be used to convert natural gas (N) units for propane (LP) operation. Conversions must be made by qualified distributor or dealer personnel.

SIDE RETURN FILTER -

1SR0302 - All Models

1SR0200 - All Models

BOTTOM RETURN FILTER -

1BR0114 or 1BR0214 - For 14-1/2” cabinets 1BR0117 or 1BR0217 - For 17-1/2” cabinets 1BR0121 or 1BR0221 - For 21” cabinets 1BR0124 or 1BR0224 - For 24-1/2” cabinets

INTERNAL FILTER WITH FIBER FILTER -

1HF0801 - All Models

HIGH ALTITUDE PRESSURE SWITCHES -

For installation where the altitude is less than 8,000 feet it is not required that the pressure switch be changed. For alti- tudes above 8,000 feet see kits below. Conversion must be made by qualified distributor or dealer personnel.

1PS0313 - 040, 060, 080, 100 MBH 1PS0314 - 120 MBH

ROOM THERMOSTATS - A wide selection of compatible thermosets are available to provide optimum performance and features for any installation.

1 Heat Stage only, manual, mechanical thermostat. Add sub- base for 1H/1C.

1H/1C, manual change-over electronic non-programmable thermostat.

1H/1C, auto/manual changeover, electronic programmable, deluxe 7-day, thermostat.

1H/1C, auto/manual changeover, electronic programmable.

*For the most current accessory information, refer to the price book or consult factory.

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Unitary Products Group

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Coleman LC8T-UH, FC8T-UH warranty Applying Filter Pressure Drop to Determine System Airflow, Accessories
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FC8T-UH, LC8T-UH specifications

The Coleman LC8T-UH and FC8T-UH are versatile heating solutions designed to provide effective warmth in diverse settings, whether at home, in a workshop, or during outdoor activities. Here, we’ll explore the main features, technologies, and characteristics that make these units stand out in the crowded heating market.

Both models boast a powerful heating capacity, ensuring reliable warmth even in extreme cold conditions. Their robust design allows for efficient heating while maintaining energy efficiency, making them an economical choice for consumers mindful of their energy usage.

One of the standout characteristics of the Coleman LC8T-UH is its user-friendly control panel, which enables easy adjustments to temperature settings. The intuitive interface ensures users can quickly find their comfort level without complicated programming or excessive trial and error.

The FC8T-UH model, on the other hand, incorporates advanced heating technologies designed to maximize performance and heat distribution. This model features a patented heating element configuration that provides even warmth across a large area, ensuring no cold spots are left unattended.

Safety is paramount in the design of the LC8T-UH and FC8T-UH. Both models are equipped with multiple safety features, including overheat protection, which automatically shuts off the unit if it starts to overheat. This is particularly important for users who might leave the heater running for extended periods, offering peace of mind.

Portability is another key feature of these models. Equipped with built-in handles and lightweight construction, both the LC8T-UH and FC8T-UH can be easily moved from room to room or taken along on outdoor adventures.

Durability is a hallmark of Coleman products, and these heating units are no exception. Built with high-quality materials that withstand wear and tear, both models are designed for long-term use.

In conclusion, the Coleman LC8T-UH and FC8T-UH represent a blend of efficiency, safety, and portability, making them ideal choices for anyone in need of reliable heating solutions. Whether you’re heating your garage, workshop, or outdoor space, these models are designed to meet varied demands, ensuring comfort and warmth when it’s most needed. By combining user-friendly features with advanced technologies, Coleman continues to uphold its reputation as a leader in the heating industry.
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