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General| Model Number | 50YEH |
|---|---|
| Category | Heat Pump |
| Refrigerant Type | R-410A |
| Voltage | 208/230V |
| Phase | 1 |
| Sound Level (Outdoor Unit) | 72 - 76 dB |
Explains the coding system used in model numbers for unit identification.
Defines DANGER, WARNING, CAUTION, and NOTICE for hazard identification.
Instructions for checking shipment against bill of lading and inspecting for damage.
Guidelines for storing units in original packaging in a clean, dry area.
Guidance on covering units and protecting pipe ends from damage and contamination.
Steps for checking electrical data, tubing, connections, and removing shipping supports.
Guidance on locating horizontal units indoors for service access and avoiding freezing/humidity.
Instructions on using hanger kits, threaded rods, vibration isolators, and pitching the unit.
Recommends cleaning the air coil with a detergent solution before start-up.
Detailed steps for converting side discharge to back discharge, including panel removal and rotation.
Notes that return air conversion is not possible due to piping changes.
Instructions for pitching the unit, installing traps, and venting condensate lines.
Guidelines for sizing, connecting, and installing duct systems for optimal performance.
Guidance on locating vertical units indoors in mechanical rooms for service access.
Instructions for mounting units on pads, ensuring clearances, and providing access.
Methods for sound attenuation including room enclosure and isolation pads.
Explains vertical units use an internal hose as a trapping loop, no external trap needed.
Instructions for using swivel piping fittings with rubber gasket seals for leak-free connections.
Steps for locating, marking underground utilities and installing loops before construction.
Guidelines for using polyethylene fusion piping, avoiding galvanized fittings, and using P/T plugs.
Discusses using antifreeze for freezing protection and calculation methods.
Explains how to set the low temperature cutout using the FP1 jumper for antifreeze applications.
Describes open loop piping, valve requirements, and material recommendations.
Details standards for scaling potential, corrosion, and erosion based on water parameters.
Guidance on sizing pressure tanks and pumps for efficient operation and preventing short cycling.
Recommends placing control valves on discharge lines and using slow closing valves.
Discusses methods for flow regulation using valves or specific flow control devices.
Details adjusting flow rate using valves and measuring pressure drop.
Specifies setting FP1 for 30°F [-1.1°C] for open loop systems to prevent freeze damage.
Explains how the HWG utilizes excess heat for domestic hot water, including built-in components.
Shows typical HWG installation and double tank installation diagrams.
Details sensor locations, microprocessor control, DIP switch functions, and status LEDs.
Explains control operation based on sensors, DIP switches, and fault codes.
Steps for turning off supply, connecting hose, draining, flushing, and closing valves.
Instructions for routing copper piping, installing anti-scald valves, and purging air.
Steps for initial start-up including opening valves, running the heat pump, and checking temperatures.
Emphasizes using copper conductors and complying with electrical codes for field wiring.
Provides electrical data for GT-PX and GT-PG series units, including FLA and fuse sizes.
Instructions for changing fan speed by moving the blue wire on the PSC motor terminal block.
Explains that HWG pump wiring is disabled at the factory and how to connect it after piping is done.
Guides wiring thermostats to CXM or ECM interface boards based on unit type.
Explains selecting temperature limits by clipping jumper JW3 for antifreeze applications.
Describes using terminal "A" for accessory devices like water valves, using 24VAC signals.
Explains using external solenoid valves for ground water installations and wiring for Taco valves.
Discusses parallel valves and flow regulators for water savings in two-stage operation.
Guidance on locating thermostats, mounting, and wiring them to the control board.
Provides wiring diagrams for ECM and PSC fan units to control boards.
Explains the interface board, thermostat inputs, and CFM settings for ECM motors.
Describes field selection of humidity control and how it affects airflow.
Details tap settings for cooling, heating, auxiliary heat, CFM adjust, and dehumidification modes.
Shows the physical layout and connections for ECM interface boards (Versions I, II, III).
Provides information on the CXM application, operation, and maintenance manual.
Explains how to use test mode and field selectable inputs for diagnostics and configuration.
Details DIP switch functions for unit performance sentinel, stage selection, and DDC output.
Outlines safety features like anti-short cycle, random start, fault retry, lockout, and high/low pressure protection.
Lists various fault conditions such as low/high pressure, temperature limits, condensate overflow, and voltage issues.
Explains that the control checks inputs and safety before operating, with start-up delays.
Details how thermostat signals translate to unit operation for heating, cooling, and emergency heat.
Discusses compatibility of heat pump thermostats with the CXM control and specific signal details.
Defines operating limits based on air and water temperatures, and ambient conditions.
Lists start-up conditions for bringing the building space up to occupancy temperatures.
Comprehensive checklist for unit and system components before powering up.
Detailed steps for performing the initial start-up and checks, including thermostat settings.
Continues the procedure with checks for water temperature, flow rate, and air temperature drop/rise.
Instructions for cleaning water coils, especially in areas with high mineral content.
Emphasizes inspecting and replacing filters regularly for maximum performance and airflow.
Advises checking and cleaning condensate drains to prevent plugging and ensure air quality.
Recommends annual amperage checks to ensure compressor is operating within specifications.
Advises against lubricating fan motors unless necessary and conducting annual dry operation checks.
Recommends cleaning the air coil annually and taking care not to damage fins.
Outlines preliminary checks like verifying power, fuses, and obvious problems before using charts.
Guidelines for verifying CXM board inputs, outputs, and sensor readings for diagnostics.
Introduces the flowchart for diagnosing problems using CXM fault recognition features.
A visual flowchart to guide diagnosis of unit operational issues based on symptoms.
Lists common faults like main power issues, HP/HPWS faults, high pressure, and low pressure with causes and solutions.
Addresses performance problems such as insufficient capacity, high head pressure, low suction, and high humidity.
Provides diagrams and fields to record operating pressures and temperatures for cycle analysis.
Outlines the terms, coverage, limitations, and exclusions of the residential geothermal product warranty.
Lists the dates, page numbers, and descriptions of revisions made to the document.
