RACDYB Series Rooftop HVAC Unit

Unit Features & Benefits

The RACDYB Series offers advanced features for efficient and reliable heating and cooling.

• Factory charged with R-454B refrigerant
• Wired and run tested
• Scroll compressors with internal line break overload and high pressure protection
• Models feature two stages of cooling
• Convertible airflow: vertical down flow or horizontal side flow
• Forkable base rails for easy handling and lifting
• Cooling operation up to 125°F ambient
• MicroChannel evaporator and condenser coil
• Package includes: Qwik-Change Flex-Fit Rack, Qwik-Slide Blower Assembly, Qwik-Clean Drain Pan
• Overflow condensate sensor
• Diagnostics with Dual 7-Segment LED Display for code compliance
• One-piece top cover and base pan with drawn supply and return opening
• Two-piece control door
• 1/4 turn fasteners on filter access door
• Color-coded and labeled wiring
• External lockable gauge ports
• TXV refrigerant metering system
• Solid-core liquid line filter drier
• High pressure and low pressure/loss of charge protection with built-in Smart Logic
• Insulation encapsulated throughout the entire unit
• High performance belt drive motor with variable pitch pulleys and quick adjust belt system
• Blower with Variable Frequency Drive (VFD) control is standard
• Industry standard footprint and matching connections
• MERV 8 & MERV 13 filters are available as a field-installed option
• Refrigerant leak detection system

Designing for Sustainability with Low GWP

In anticipation of the Environmental Protection Agency's (EPA) global warming potential (GWP) limit of 700 for refrigerants in heating and cooling systems by 2025, the RACDYB Series utilizes R-454B refrigerant. This refrigerant offers a 78% lower GWP compared to previous-generation refrigerants, contributing to sustainability goals by reducing greenhouse gas emissions while maintaining exceptional energy efficiency and dependable comfort.

(Note: The "LOW GWP Refrigerant" logo is a visual element indicating this feature.)

Dimensional Data

General Unit Dimensions and Access Points

The unit features various access points for service and maintenance. Key access panels include:

• Control Access
• Service Disconnect Knockout
• Access Panel Compressor
• Filter Access Panel
• Indoor Coil Access Panel
• Return Cover
• Drain Pan
• Supply Cover
• Access Panel Blower
• Electric Heater Access
• Service Port Door
• Power Entry
• Receptacle

Dimensions vary by model series. For example, the 120 & 150 models have a depth of 60" [1524 mm], while the 090 & 102 models have a depth of 50" [1270 mm]. Overall dimensions are approximately 89" [2261 mm] in length and 57 7/8" [1470 mm] in width.

Horizontal Applications

For horizontal airflow configurations, the supply air opening is positioned above the return air opening. Key dimensions include:

• Supply Air Opening: 28 3/8" [721 mm] width, 13 7/8" [353 mm] height.
• Return Air Opening: 21 3/4" [555 mm] width, 57 7/8" [149 mm] height.
• Overall unit length for horizontal airflow is 59 3/8" [1510 mm].

Downflow Applications (View from Bottom Up)

For downflow airflow configurations, the unit dimensions are presented from the bottom. Key dimensions include:

• Supply Air Opening: 28 3/4" [724 mm] width, 14 1/4" [356 mm] height.
• Return Air Opening: 36 5/8" [924 mm] width, 14 3/8" [366 mm] height.
• Overall unit length for downflow is 59 1/8" [1507 mm].
• The unit has 2" [51 mm] clearance on typically 3 sides for duct connections.

Weights

Corner weights are distributed as follows for the 7.5-12.5 Tons [21.1-44.0 kW] capacity range:

(Diagram shows a unit with labels A, B, C, D at corners, indicating weight distribution. A spreader bar, lifting beam, and cable/chain are shown for lifting.)

Clearances

The following minimum clearances are required for proper unit performance and serviceability:

¹ 18" [457 mm] minimum if drainpan will not be removed.

² 48" [1219 mm] minimum if economizer is installed.

(Diagram illustrates these clearance zones around the unit.)