ClimateMaster 2006 Rep Meeting

ClimaDry™ Applications

Jeff Hammond, Director of Marketing

ClimaDry Applications

What is ClimaDry™?

WSHP Operating Modes

• Cooling– Dehumidification as a byproduct– Typical SHR of 0.72 to 0.78

• Heating

• Some WSHPs have Reheat for Humidity Control– Hot Gas Reheat– Condenser Water Reheat– New Energy Reheat

• Electric or hot water– ClimaDry (patent pending)ClimaDry (patent pending)

• Modulating condenser water regenerative reheatModulating condenser water regenerative reheat

Standard WSHP Refrigerant Circuit

Co

mp

res

so

r

Eva

por

ator

Condenser

RV

TXV

Air Water

Typical (ON/OFF) Hot Gas Reheat Circuit

Traditional Condenser Water Reheat

ClimaDry Condenser Water Reheat

ClimaDry Option Components

LAT sensor

Reheat coil

Space between reheat and evaporator coils to maximize moisture removal

Evaporator coil

Low fan speed duringdehumidification mode

ClimaDry Option Components

Modulating reheatwater valve (with integrated LAT controller)

Condenser

Condenser waterregeneration pump

ClimaDry Option Components

• DXM Microprocessor Controller– Incorporates reheat control logic

– Utilizes standard humidistat, dehumidistat or integrated thermostat to initiate reheat mode (selected by dip switches)

– Uses low fan speed during dehumidification mode

ClimaDry Features

• 100% reheat– Taps full heat of rejection for reheat as needed– Provides neutral supply air temperature for assured comfort during

dehumidification mode

• Modulating reheat– precise control of supply air temperatures via integral proportional

controller (72 +/- 3F adj)– compensates for variations of EAT or EWT

• Simple– Integrated controls requiring only on/off dehumid call

• DDC options are compatible

– Standard ARI-rated refrigeration circuit – Standard cabinet with factory-installed components

• Uses “free” waste heat for reheat– heat of rejection from building water loop

PatentPending

ClimaDry versus the Competition

ClimaDry Hot Gas ReheatModulating control ON/OFF control"Neutral" supply air temperature Uncontrolled supply air temperatureSimple refrigeration circuit Complicated refrigeration circuitNormal refrigeration pressures Unusual & varying refrigeration pressures

Full Reheat Partial Reheat

ARI ratedperformance

Non-ARI product

ClimaDry Applications

Why Use ClimaDry™?

U.S. Dew-point Temperatures

ClimaDry Applications

• ClimaDry can be applied to most common low SHR applications, such as . . . – High occupancy loads (classrooms, etc.)– High latent loads (locker rooms, spas)– High infiltration loads (entry areas)– Untreated make up air intake (low fractions)– Humid climates– Anywhere humidity is a problem

ClimaDry Applications

How is ClimaDry™ Sized?

ClimaDry Reheat Operation

• Return air is cooled and dehumidified by the evaporator coil

• Supply air is reheated by the hydronic reheat coil to “neutral” conditions

• Dehumidification capability is determined by the heat pump latent capacity rating:

LC = TC - SC

ClimaDry Operation

Size Mbtuh lbs/hr kW kg/hr18 4.7 4.4 1.4 2.024 6.1 5.7 1.8 2.630 6.8 6.4 2.0 2.936 9.6 9.0 2.8 4.141 9.7 9.1 2.8 4.142 11.0 10.3 3.2 4.748 12.7 11.9 3.7 5.460 15.2 14.2 4.5 6.4

GC Series Latent Capacity at 85°F (29.4°C) EWT

ClimaDry Applications

How is ClimaDry™ Controlled?

ClimaDry Controls• DXM board has built-in microprocessor control for reheat

operation• Cooling takes precedent• Reheat is engaged by …

– Dehumidistat– Humidistat– ClimateMaster ATP32U02 thermostat– DDC controls

• Units with PSC or ECM operate at lower airflow during ClimaDry operation

• Supply air leaves at 72ºF (22ºC) +/- 3ºF (+/-2ºC)• Optional potentiometer allows further adjustment, +/- 3ºF

(+/-2ºC)

ClimaDry Control Notes

• DXM board required• DIP switches allow choice of dehumidistat or

humidistat• Not all integrated t-stats are created the

same!– Some thermostats with dehumidification mode

only allow dehumidification output in cooling mode (e.g. Carrier Thermidistat)

– ClimateMaster ATP32U02 allows reheat operation even when cooling is not required

• ClimaDry = Modulating Reheat with ON/OFF control input!

ClimaDry Applications

ClimaDry™ Installation

ClimaDry Installation

• All components are inside unit• Water piping is the same as any other

ClimateMaster unit• Air bleed must be used to purge air from

reheat coil• ClimaDry MUST NOT be used for 100%

outside applications– Reheat coil could be subject to freezing conditions

ClimaDry Applications

ClimaDry™ Availability

ClimaDry Availability

• GCV series– Standard range vertical units for Boiler/Tower

applications

• GLV series– Large tonnage (6-25 tons) vertical units for Boiler/Tower

or Geothermal applications

• GS, TS, TT series– Horizontal/Vertical Upflow/Vertical Downflow– R22 (GS) or R-410A (TS/TT)– Extended range (Blr/Twr & Geothermal)– Ultra High Efficiencies– 1.5 to 6 tons

In March 1 Commercial Price List and EZ-Order

Questions?

ClimateMaster 2006 Rep Meeting

ClimaDry Applications

Jeff Hammond, Director of Marketing