York WR 180 warranty Alternate Mode, Reheat Control Board

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262292-YTG-C-0707

The unit will not operate in the reheat mode if there is any call for heating.

On units with economizers, the unit will not operate in the reheat mode if there is a call for cooling and the economizer is operating as first stage of cooling.

All safety devices function as previously described.

"ALTERNATE” MODE

When the RCB detects a need for dehumidification (24VAC) at "HUM" via the field supplied dehumidistat connected to RHTB-1 and RHTB-2, and there is not a call for cooling, it energizes the HGR, which energizes the SOL 3, SOL 2, and de-energizes SOL 1. The unit then operates with circuit #1 in reheat mode and circuit #2 in cooling mode.

When the room thermostat calls for first stage cooling while there is still a call for dehumidification, no operational change is

made. The call for cooling is ignored and the unit continues to operate with circuit #1 in reheat mode and circuit #2 in cooling mode.

When the room thermostat calls for second stage cooling, the RCB senses a signal through "Y1" & "Y2" and de-energizes the HGR, which de-energizes SOL 3 and SOL 2, and energizes SOL 1. Both circuits operate in the cooling mode.

Indoor blower operation is initiated upon a call for first stage cooling, second stage cooling or dehumidification.

Anytime there is a call for 2 stages of cooling, the unit will not operate in the reheat mode, even if there is still a call for dehumidification at "HUM".

The unit will not operate in the reheat mode if there is any call for heating.

All safety devices function as previously described.

R

Y1

P4

Y2

K1

G

W1

K2

W2

OCC

K4

C

K3

COM

`

P6

 

 

P5

P3

 

 

 

 

 

 

 

 

HGRR

 

HGR

 

HUM

 

MODE

 

 

 

DEHUMIDISTAT

SELECTION

 

 

 

HARNESS

 

JUMPER

 

 

 

CONNECTION

FIGURE 2: REHEAT CONTROL BOARD

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Unitary Products Group

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Contents Warranty GAS/ELECTRIC Single Package AIR ConditionersTable of Contents Ton Sunline MagnaDRY Model Number Nomenclature Features Normal Mode Unit CutawayAlternate Mode Reheat Control BoardReheat Controls Part FACTORY-INSTALLED Options Unitary Products Group FIELD-INSTALLED Accessories Sound Power RATING1 Capacity Ratings ARIGAS Heat Ratings Cooling Capacities for WR180 MBH104 151 16.9 142 118 101 147 15.2 Cooling Capacities for WR240 240 21.3 101 225 23.1 100 5000 221 21.0 140 Cooling Capacities for WR300 281 26.6 128 Cooling Capacities for WR180 Alternate Reheat Mode Cooling Capacities for WR240 Alternate Reheat Mode Cooling Capacities for WR300 Alternate Reheat Mode EV+U Lbs/Hr Lbs/Hr Altitude Correction Factors AIR Temp Altitude Feet$OWLWXGH7HPSHUDWXUH&RQYHUVLRQDFWRU ESP CFM RPM BHP Scfm Scfm Scfm Scfm Ton Standard Drive, Gas Heat, Bottom Connection VP68 x BK100 HP motor 10 HP motor 7.5 HP motor YTG-C-0707 12000 11000 YTG-C-0707 Ton High Static Drive, Cooling Only, Bottom Duct Connection Ton High Static Drive, Gas Heat, Bottom Duct Connection Power Exhaust Performance Blower Motor and Drive DataStatic RESISTANCES1 BRKR1 78.8 100 97.3 125 E18 13.5 37.5 86.5 100 88.8 107.3 125 E18 13.5 37.5 Physical Data Models WR180 WR240 WR300Hole Rear View Dimensions Unit Dimensions WR180, 240 & 300 Rainhood Minimum ClearancesUnit Center of Gravity Four and SIX Point Loads Unit Roof Curb Dimensions Typical Field Wiring Indoor Evaporator FAN Assembly Unit CabinetUnit Controls Outdoor Condenser FAN AssemblyRefrigerant Components GAS Heating Section WR***N ModelsElectrical Requirements Unit Operating CharacteristicsOther PRE-ENGINEERED Accessories Available Standard Limited WarrantiesOther Factory Installed Options LOW Static Drive WR240 & WR300 only

WR 180 specifications

The York WR 180 is a state-of-the-art water-cooled chiller, renowned for its efficiency, flexibility, and reliability in various applications. Designed specifically for commercial and industrial use, the WR 180 stands out as an ideal solution for facilities requiring effective climate control, such as hotels, hospitals, shopping malls, and large office buildings.

One of the primary features of the York WR 180 is its advanced chiller design, which incorporates variable speed technology. This allows the unit to adjust its cooling capacity based on the actual load demands of the building, leading to significant energy savings. By operating at variable speeds instead of a fixed rate, the chiller minimizes energy consumption during lower demand periods while maintaining optimal performance during peak loads.

The WR 180 also employs a reliable and efficient centrifugal compressor, which contributes to its high energy efficiency ratio (EER). This compressor is designed to provide robust cooling while operating quietly, making it suitable for environments where noise reduction is essential. Additionally, the unit features a microprocessor-based control system that offers sophisticated monitoring and control capabilities, allowing operators to fine-tune performance and enhance reliability.

Another notable characteristic of the York WR 180 is its environmentally friendly refrigerant options. The chiller can operate with refrigerants that have a low global warming potential (GWP), aligning with international regulations and environmental sustainability goals. This commitment to eco-friendly designs not only helps reduce the carbon footprint but also ensures compliance with industry standards.

In terms of installation and maintenance, the WR 180 is designed for user-friendliness. Its modular design simplifies transport and installation in various spaces, while easy-access components facilitate routine maintenance. The chiller also offers various connectivity options, enabling integration with building management systems for real-time monitoring and control.

Overall, the York WR 180 combines innovative design, cutting-edge technology, and eco-friendly practices, making it a top choice for industries seeking efficient and sustainable cooling solutions. Its impressive features, coupled with strong operational flexibility, position the WR 180 as a leader in the chiller market.