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This document provides installation instructions and technical specifications for the Q94RD Series Single Package Heat Pump, a self-contained heating and cooling unit designed for outdoor installation.
The Q94RD Series Single Package Heat Pump is an all-electric heating and cooling system that provides both heating and cooling functions from a single outdoor unit. It is designed to be installed outdoors and connected to the indoor ductwork system to distribute conditioned air throughout the building. The unit utilizes a refrigeration cycle to transfer heat, providing cooling in warmer months and heating in colder months.
The Q94RD Series is available in various capacities, indicated by the model numbers (e.g., 024K, 030K, 036K, 042K, 048K, 060K). The unit operates on a 208/230 Volt, single-phase, 60 Hz electrical supply. Key physical dimensions vary by model, with lengths ranging from 49 to 63 inches, widths from 35 to 35 inches, and heights from 30.2 to 38.2 inches. The supply and return duct connections are typically 12 inches in diameter. The unit includes provisions for a 1.75-inch diameter electric heater power supply, a 1.125-inch diameter power supply, and a 0.875-inch diameter low voltage supply. A 3/4-inch NPT drain connection is also provided for condensate removal.
The manual includes detailed tables for physical data (Table 2) and heat rise data (Table 3), which provides information on external static pressure drop and heat output in BTUs per hour (BTUH) for various blower settings and tap configurations. For instance, a 024K model at a 0.2 static pressure and Tap T1 can produce 31,951 CFM with a heat rise of 910 BTUH.
The unit is designed for easy installation with clear instructions for connecting supply and return ducts, electrical wiring, and condensate drainage. It supports various duct configurations, including single and multiple duct applications, with specific guidance on how to connect the ductwork to the unit's supply and return openings. The unit is equipped with a control access panel for easy access to electrical connections and controls.
The Q94RD Series can be integrated with different thermostat types, including 1-stage cool/heat and 1-stage electric heat, or 1-stage cool/heat and optional 2-stage electric heat. Wiring diagrams are provided for these configurations, showing connections to the indoor terminal and the unit's defrost board. The unit also features an anti-short cycle timer to protect the compressor from rapid cycling.
For optimal performance and safety, specific clearances around the unit must be maintained. A minimum of 24 inches is required for the blower and electrical control access panel side, 72 inches for the top, and 0 inches for the duct connection side and combustible materials.
Regular maintenance is crucial for the longevity and efficient operation of the heat pump. The manual emphasizes the importance of periodic inspections and cleaning. Key maintenance tasks include:
The unit includes a defrost board that manages the defrost cycle, which is essential for efficient operation in cold weather. The anti-short cycle timer helps prevent damage to the compressor by ensuring a minimum off-time between cycles. The manual also provides troubleshooting guidance for common issues, including diagnostic descriptions for various status indicators (e.g., operating status, fault conditions).
An installation checklist is provided to ensure all critical steps are completed during installation, including verifying electrical connections, line voltage polarity, thermostat settings, and filter status. This checklist helps ensure proper setup and operation of the unit.
General