Trane Model 012 GEH, Model 180 GEV manual Entering Water Temperature Sampling, Waterside Economizer

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Features and Benefits

ZN510 & ZN524 Controls

More ZN524 Controller Functions: When the building owners choice is Trane Tracer controls, the ZN524 con- troller is required when any of the fol- lowing applications are selected on a single and dual circuited equipment.

•Waterside Economizer

•Hot Gas Reheat (Dehumidification)

•Boilerless Control for Electric Heat

•Water Isolation Valve Control (for Variable Speed Pumping)

Entering Water Temperature Sampling

The ZN524 controller will sample the entering water temperature to deter- mine proper control action for units equipped with boilerless electric heat or waterside economizer.

Waterside Economizer

Entering water temperature (EWT) sam- pling will automatically occur at power up when the unit is equipped with a waterside economizer (WSE). The EWT is used to determine if economizing is feasible. When the conditions are met, the isolation valve(s) are driven open for three minutes and the EWT reading is taken. The determination as to whether or not the economizer can be enabled will be made and the controller will take appropriate action. The isola- tion valve will remain open regardless if the WSE or the DX cooling is enabled.

The unit’s waterside economizer will contain a 2-position water valve wired to the ZN524. The economizing water coil will be optimized to provide 100% of the unit capacity at 80.6 F/66.2 F (27.0/10.0 C) return air temperature with 45 F (7 C) entering water. The flow rate is established at 86 F (30 C) entering water temperature and 96 F (36 C) leav- ing water temperature.

Low leaving air protection will be fur- nished to protect the unit against deliv- ering air that is cold enough to sweat discharge air grilles. Coil icing protec- tion will also be provided.

Waterside economizer cooling will be active during occupied, unoccupied and standby cooling modes.

Boilerless Control Electric Heat and Supplemental Electric Heat: The ZN524 supports a single stage of boilerless electric heat operation or concurrent heating.

When the unit is configured for boiler- less control, the EWT will be used to determine whether DX heating should be disabled and the electric heater enabled. When these conditions are met, the isolation valve(s) are driven open for three minutes and the enter- ing water temperature reading is taken. The determination as to whether or not to utilize electric heat will be made and the controller will take appropriate action. If boilerless electric heat is enabled, then the isolation valve will be closed, shutting down the water flow to the unit.

When the unit is configured for concur- rent operation of DX heating (compres- sor in heat pump mode) and electric heat, the electric heat will act as a sec- ond stage of heat for single compressor units, and a third stage of heat for dual compressor units. Note: With concur- rent (or supplemental) electric heat, the electric heater is field provided.

Water Isolation Valves

Variable speed pumping systems are supported by the ZN524 controller when water isolation valves are pres- ent. Up to two isolation valves are sup- ported by the controller (one for each compressor circuit).

The valves are normally closed unless DX heating, DX cooling, waterside economizer or dehumidification is requested. When the isolation valves

are driven open for operation, the out- puts will be driven for 20 seconds to ensure adequate water flow before the compressor outputs are energized. Once an isolation valve has been opened, it will remain open for a 10 minute minimum to reduce excessive cycling of the valve.

Dehumidification Dehumidification for the single and dual circuited water-source heat pump is applicable with the ZN524 controller. The controller is capable of directing one stage of DX cooling in conjunction with one stage of reheat (hot gas reheat).

Dehumidification can only occur when the controller is in the cooling mode. A humidity transmitter is used to meas- ure the zone’s relative humidity (RH), then compares the zone relative humid- ity to the relative humidity enable/dis- able setpoint parameters. The default values for dehumidification enable is 60% RH with the disable point at 52% RH. These values are configurable.

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Contents WSHP-PRC003-EN Introduction Contents Model Number Digits 1-3 Unit ConfigurationTable G3 General Data GEH 060 to General DataTable G1 General Data GEH 006 to Table G2 General Data GEH 024 to024 030 036 040 042 Table G4 General Data GEV 006 toTable G5 General Data GEV 024 to Table G6 General Data GEV 048 to240 Table G7 General Data GEV 072 toTable G8 General Data GEH 072 090 120 150 180Table G9 GEH/GEV Air-to-Refrigerant CoilsTable G17 GEH/GEV 060 2-compr. circuit GEV 1/2 to 5-Ton Cabinet Features and BenefitsDesign Advantages GEH 1/2 to 5-Ton CabinetAirflow Options 6 to 20-ton Features BenefitsGEH/GEV 6 to 20-Ton Cabinet Airflow Options 1/2 to 5 tonDrain Pan Access Panels 12-1/2 to 20-tonHanging Device 1/2 to 5-ton Hanging Device 6 to 12-1/2-tonWater Connections 1/2 to 5-ton Schrader Connections 1/2 to 5-tonCo-axial Water-to-Refrigerant Coil Compressor and Co-axial Coil Isolation 1/2 to 5 tonAir-Side Filter Blower HousingBlower Motor 1/2 to 5 ton Blower Motor 6 to 20 tonWaterside Economizer option Boilerless Control/Electric Heat optionProper Hot Gas Design Hot Gas Reheat optionCommon Reheat Applications Controls by Trane ControlsStand-alone System Safety DevicesBasic Controls Basic 24 Volt ControlsSmall Building Control Deluxe ControlsDeluxe 24V Electronic Controls Safety Control Deluxe 24V features include Random StartAnti-short Cycle Timer Compressor DisableTracer ZN510 & ZN524 Controls ZN510 & ZN524 ControlsDirect Digital Controls Water Isolation Valves Entering Water Temperature SamplingWaterside Economizer Building Control Advantages Tracer ZN controller system installationHanging Devices and Duct Attachments Application ConsiderationsHanging the Horizontal Condensate Traps Condensate trap installation40 F/ 4 C may require antifreeze in the water loop Distributed Pumping SystemService Access Installation Made Easy

Model 180 GEV, 120 GEH, Model 012 GEH specifications

Trane, a leading name in HVAC (heating, ventilation, and air conditioning) systems, offers a diverse range of models designed to cater to different cooling needs. Among its notable products are the Trane Model 180 GEV, Model 120 GEH, and Model 012 GEH. Each of these units incorporates advanced technologies and features aimed at enhancing efficiency, durability, and overall performance.

The Trane Model 180 GEV is engineered for high-performance cooling and heating applications. One of its standout features is the variable-speed compressor, which allows for precise temperature control and significant energy savings. This model also integrates advanced inverter technology that optimizes energy consumption based on the load. The robust design of the unit ensures reliability even under extreme weather conditions, making it a favored choice for commercial and industrial sectors.

In contrast, the Trane Model 120 GEH is a versatile solution that focuses on efficiency and adaptability. This model is equipped with Trane’s exclusive Climatuff compressor technology, which enhances the reliability and longevity of the system. The Model 120 GEH also includes a user-friendly touchscreen interface, allowing for convenient adjustments and monitoring of the system's performance. Enhanced filtration systems contribute to improved indoor air quality, which is a critical factor for many users.

The Trane Model 012 GEH is designed for smaller spaces but does not compromise on performance. This compact unit boasts energy-efficient operation and is equipped with Trane’s proprietary Air-Cooled Scroll Compressors that enhance its cooling capacity while maintaining low operational noise levels. Its sleek design allows for easy installation in various settings, including residential areas. The Model 012 GEH also features enhanced reliability through its robust materials, ensuring that it can withstand varying environmental conditions.

All three models emphasize Trane’s commitment to sustainability and energy efficiency. With the incorporation of eco-friendly refrigerants and advanced heat exchange technologies, users can enjoy superior cooling performance while minimizing their environmental impact. Moreover, these models are backed by Trane’s comprehensive support, providing customers with peace of mind through warranties and service options.

In summary, Trane's Model 180 GEV, Model 120 GEH, and Model 012 GEH are exemplars of modern HVAC technology, offering various features tailored to meet specific cooling and heating requirements. Each model stands out for its unique capabilities, efficient operation, and robust design, reaffirming Trane's position as a trusted leader in the HVAC industry.
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