Toshiba Dehumidifier Tranquility 20 Application Guide

2014-12-13

: Toshiba Toshiba-Dehumidifier-Tranquility-20-Application-Guide-128684 toshiba-dehumidifier-tranquility-20-application-guide-128684 toshiba pdf

Open the PDF directly: View PDF .
Page Count: 14

Download
Open PDF In Browser	View PDF

ClimaDry
ClimaDry Whole House
Dehumidiﬁcation Option
Tranquility 27
Tranquility 20
Applications Guide
97B0051N01
Revision: 18 April, 2008B

Table of Contents
Model Nomenclature Example

ClimaDry Schematic

ClimaDry Overview

TT Blower Data

ClimaDry Beneﬁts

TS ECM Blower Data

ClimaDry Features

TS PSC Blower Data

ClimaDry Applications

Reheat Coil Pressure Drop Table

ClimaDry Sequence of Operation

TS Air Coil Face Area Table

ClimaDry Component Functions

Wiring Diagram

ClimaDry Application Considerations

Flushing/Purging Units

Revision History

1 2

4 5 6

TT V 0 7 2 A G D 0 1 D L K S
Series

Standard

TT = Tranquility Two-Stage Scroll

S = Standard

Supply Air Flow &
Motor Configuration

Configuration
V = Vertical Up
H = Horizontal
D = Vertical Down

Unit Size

026, 038, 049, 064, 072

Motor
ECM
ECM
ECM
ECM

Return Air Flow Configuration

Revision Level

L = Left Return
R = Right Return

A = Current Revision

Voltage

Heat Exchanger Options

G = 208-230/60/1

Controls

Cabinet

0 = Residential

Coated Air Coil
Copper Cupro-Nickel
A
J

Standard

C = CXM
D = DXM+

Notes
+ = Only Available With ClimaDry Option

Supply Configuration
Top
TTV
TTD
Down
TTH
Back
TTH
Straight

K
N
P
W

ClimaDry

N/A

Water Circuit Options
0 = None
1 = HWG w/Internal Pump

* = Not Available On DownFlow Units
Rev.: 18 April, 2008B

� CAUTION! �

Water Source Heat Pump systems (including Water Loop Heat Pump systems) must have antifreeze protection to 20°F [-6.7°C] for ClimaDry applications. The ClimaDry option MUST NOT be used on open water loop
systems, or any system without antifreeze protection.
Notes:
1. ClimaDry reheat option must be ordered with original equipment (cannot be field added). Unit must have DXM
control. Not available for units with internal water valve, or flow regulator options. Check unit product catalog for
limitations and specific requirements.
2. ClimaDry cannot be used on open loop systems, only closed loop systems.
3. ClimaDry systems must use appropriate antifreeze solutions.
4. ClimaDry is not recommended for applications with poor water quality (see water quality guidelines in unit IOM).
The copper heat exchanger with cast iron pump (standard ClimaDry option) are designed for closed loop systems.
5. Max working water pressure for the ClimaDry option is 145psig.
6. Available with TT, TS models. Check unit product catalog data nomenclature for models with ClimaDry reheat
option.
7. Thermostat must be either:

1. Thermostat with dehumidification mode (similar to ATA32U02)

2. Thermostat and separate humidistat or dehumidistat controller (see Table 3 for DXM DIP settings).
8. ClimaDry units must have minimum entering air temperature of 70°F DB / 61°F WB

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Overview
ClimaDry™ Whole House Dehumidification Overview
Indoor Air Quality (IAQ) and Relative Humidity (RH)
are increasingly becoming design issues that must be
addressed by selecting heating and cooling equipment
with advanced capabilities. The ClimateMaster
ClimaDry™ reheat option (patent pending) offers unique
features unlike anything currently available today.
ClimateMaster’s ClimaDry reheat option is an innovative
means of providing modulating reheat without the
complication of refrigeration controls. ClimaDry is Hot
Gas Generated Reheat, which utilizes one of the biggest
advantages of a water source heat pump (WSHP), the
transfer of energy through the loop piping system.
ClimaDry simply diverts condenser water through a
water-to-air coil that is placed after the evaporator coil.
If condenser water is not warm enough, the internal
“run-around” loop increases the water temperature with
each pass through the condenser coil.
ClimaDry Benefits
ClimaDry is like no other reheat option on the market.
Proportional reheat is controlled to the desired leaving
air temperature set point (factory set point of 72°F,
[22°C}), no matter what the loop temperature is. Since
dehumidification operation will occur under less than full
load cooling conditions a good percentage of the time,
it is important to have a reheat function that provides
100% reheat in the spring and fall when the loop is cool.
Supply air temperature is field adjustable to +/- 3°F
[+/- 1.7°C] for even greater flexibility with an optional
potentiometer.
Competitors without ClimaDry typically use an on/off
(non-modulating) refrigeration based reheat circuit,
typically referred to as “Hot gas reheat” (HGR). HGR
needs higher condensing temperatures to work well,
typically 85°F [29°C] entering water temperature (EWT).
With HGR, cooler water temperatures produce cooler
supply air temperatures, which could overcool the
space, requiring additional space heating from another
source or a special auto-change-over relay to allow
the unit to switch back and forth between reheat and
heating. Rarely does HGR provide 100% reheat, like
ClimaDry.
A key benefit to ClimaDry is a simple and easy to
troubleshoot refrigerant circuit. No switching valves or
hard to diagnose leaky check valves are utilized. No
unusual refrigerant pressures occur during the reheat
mode. The ClimaDry refrigerant circuit is like every other
ClimateMaster unit (without reheat), so everything the
technician already knows applies to troubleshooting
the ClimaDry refrigeration circuit. Plus, the water loop
portion of the ClimaDry option is easy to understand
and diagnose.

Features Include:
• Modulating reheat for precise control of supply
air temperatures
• 100% reheat (operates as a whole house
dehumidifier)
• “Neutral” supply air temperature even at part load
(non-design) conditions
• Supply air temperature adjustment, +/- 3°F
[+/-1.7°C] from 72°F [22°C] factory setpoint with
optional potentiometer
• Integrated factory supplied reheat controls – simply
attach a humidistat or dehumidistat
• Microprocessor (DXM) controls standard
• Ultra simple refrigeration circuit
• All water system eliminates refrigeration circuit
modifications (same refrigeration circuit as units
without ClimaDry)
• Stable refrigeration pressures, even at low EWTs
• All components located inside the cabinet
• Moves heat of rejection from ground loop to supply
air stream
Availability
ClimaDry is currently available on ClimateMaster
residential Tranquility 27™ (TT) and Tranquility 20™ (TS)
series units (vertical and horizontal units only).
ClimaDry Applications
With the ClimaDry option, return air from the space is
conditioned by the air-to-refrigerant (evaporator) coil, then
reheated by the water-to-air (reheat) coil to dehumidify
the air, but maintain the same space temperature (thus
operating as a whole house dehumidifier). The moisture
removal capability of the heat pump is determined by
the unit’s latent capacity rating. Latent Capacity (LC)
equals Total Capacity (TC) minus Sensible Capacity (SC).
For example, at 85°F [29°C] EWT, the moisture removal
capability (latent capacity) of a ClimateMaster size 036
heat pump is 9.6 MBtuh [2.8kW] as shown in figure 1.
Dividing the latent capacity by 1,069 BTU/LB of water
vapor at 80°F DB and 67°F WB [26.7°C DB and 19.4°C
WB] moist air enthalpy, converts the amount of moisture
removal to pounds per hour (multiply pounds per hour
by 0.4536 to obtain kg/hr). Calculations are shown
in figure 1. Most ClimateMaster heat pumps have a
sensible-to-total (S/T) ratio of 0.72 to 0.76. Therefore,
approximately, 25% of the cooling capacity is dedicated
to latent cooling capacity (moisture removal). When
selecting a unit with ClimaDry, the space sensible
and latent loads should be calculated. If the unit will
be used for space cooling, a unit with at least enough
capacity to satisfy the building sensible load should be
selected. If the latent cooling load is not satisfied by
the selection, a larger unit with enough latent capacity
will be required. The ClimaDry Option can be used for
the additional moisture load. If the unit will be used for
dehumidification purposes only, the latent capacity is

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

the only consideration necessary. In this case, sensible
load is immaterial. Example latent capacities for a
typical ClimateMaster heat pump are shown in table 1.
ClimaDry is especially useful in Northern Climates,
where the heat pump may be oversized in the cooling
mode to provide enough heating capacity. Units with
ClimaDry will compensate for these applications
by operating as a whole house dehumidifier when
necessary to maintain space Relative Humidity (RH).
Since the ClimaDry option is internal to the unit,
installation is much easier than a separate whole house
dehumidifier. Plus, an additional compressor and
controls can be eliminated, simplifying the system and
lowering operating and installation costs.

Table 1: Typical Unit Latent capacity
Latent Capacity at 85°F [29.4°C] EWT
Size

MBtuh

lbs/hr

kg/hr

4.7

4.4

1.4

2.0

6.1

5.7

1.8

2.6

6.8

6.4

2.0

2.9

9.6

9.0

2.8

4.1

11.0

10.3

3.2

4.7

12.7

11.9

3.7

5.4

15.2

14.2

4.5

6.4

16.9

15.8

5.0

7.2

Figure 1: Example Size 036 Performance
Performance Data
Model 036

Dividing the latent capacity by
1,069 BTU/LB of water vapor at
80°F DB and 67°F WB [26.7°C
DB and 19.4°C WB] moist air
enthalpy, converts the amount
of moisture removal to pounds
per hour (multiply pounds per
hour by 0.4536 to obtain kg/hr).
Calculations are shown in figure 1.

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

ClimaDry Sequence Of Operation
A heat pump equipped with ClimaDry can operate
in three modes; cooling, cooling with reheat, and
heating. The cooling/heating modes are like any other
ClimateMaster WSHP. The reversing valve (“O” signal)
is energized in cooling, along with the compressor
contactor(s) and blower relay. In the heating mode the
reversing valve is de-energized. Almost any thermostat
will activate the heat pump in heating or cooling modes.
The DXM microprocessor board, which is standard with
the ClimaDry option, will accept either heat pump (Y,O)
thermostats or non-heat pump (Y,W) thermostats (see
CXM/DXM AOM for detailed DXM information).

There are five operational inputs for single stage units
and seven operational inputs for two stage units:
-Fan Only
-1st Stage Cooling
-2nd Stage Cooling
-1st Stage Heating
-2nd Stage Heating
-3rd Stage Heating (If applicable)
-Reheat Mode
• Fan Only: A (G) call from the thermostat to the (G)
terminal of the DXM control board will bring the unit
on in fan only mode.
• 1st Stage Cooling: A simultaneous call from (G),
(Y1), and (O) to the (G), (Y1), (O/W2) terminals of the
DXM control board will bring the unit on in 1st Stage
Cooling.

The reheat mode requires either a separate humidistat/
dehumidistat or a thermostat that has an integrated
dehumidification function for activation. The DXM
board is configured to work with either a humidistat or
dehumidistat input to terminal “H” (DIP switch settings
for the DXM board are shown below in table 2). Upon
receiving an “H” input, the DXM board will activate the
cooling mode and engage reheat. Table 3 shows the
relationship between thermostat input signals to the DXM
board and unit operation.

Table 2: Humidistat/Dehumidistat Logic and DXM 2.1, 2.2., 2.3 DIP settings
Sensor

2.1

2.2

2.3

Logic

Reheat (ON) - H

Reheat (OFF) - H

Humidistat

OFF

Reverse

0 VAC

24 VAC

Dehumidistat

OFF

Standard

24 VAC

0 VAC

Table 3: ClimaDry Operating Modes
Input
Mode

Output

Y23

No Demand

ON/OFF5

OFF

Fan Only

ON/OFF

OFF

Cooling 1st Stage

OFF

Cooling & Dehumidistat

Dehumidistat Only

ON/OFF5

Heating 1st Stage

Backup
Reheat
Elec Heat

Y23

ON/OFF5

OFF

ON/OFF

OFF

ON/OFF5

OFF

ON/OFF5

OFF

Heating 2nd Stage

OFF

ON/OFF5

OFF

ON/OFF5

OFF

Heating 3rd Stage4

OFF

ON4

OFF

ON4

OFF

Heating & Dehumidistat2

OFF

Cooling 2nd Stage
1

ON/OFF5 ON/OFF5

OFF

Cooling input takes priority over dehumidify input.
DXM is programmed to ignore the H demand when the unit is in heating mode.
N/A for single stage units; Full load operation for dual capacity units.
4
Single stage unit: W = 2nd Stage backup elec. heat; Two-Stage units: W = 3rd stage backup elec. heat.
5
ON/OFF = Either ON or OFF.
1
2
3

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

• 2nd Stage Cooling: A simultaneous call from (G),
(Y1), (Y2), and (O) to the (G), (Y1), (Y2), and (O/W2)
terminals of the DXM control board will bring the unit
on in 2nd Stage Cooling. When the call is satisfied
at the thermostat the unit will continue to run in 1st
Stage Cooling until the 1st Stage Cooling call is
removed or satisfied, shutting down the unit.
NOTE: Not all units have two-stage cooling
functionality.
• 1st Stage Heating: A simultaneous call from (G) and
(Y1) to the (G) and (Y1) terminals of the DXM control
board will bring the unit on in 1st Stage Heating.
• 2nd Stage Heating: A simultaneous call from (G), (Y1),
and (Y2) to the (G), (Y1), and (Y2) terminals of the
DXM control board will bring the unit on in 2nd Stage
Heating. When the call is satisfied at the thermostat
the unit will continue to run in 1st Stage Heating until
the call is removed or satisfied, shutting down the
unit.
NOTE: Not all units have two-stage heating
functionality. 2nd stage heating for units with
PSC fan and single stage compressor is auxiliary
electric heat (Y, W1, G).
• 3rd Stage Heating (ECM fan models only): A
simultaneous call from (G), (Y1), (Y2), and (W)
terminals to the (G), (Y1), (Y2), and (W1) terminals
of the DXM board will bring the unit on in 3rd Stage
Heating (compressor plus auxiliary electric heat).
• Reheat Mode: A call from the Humidistat/
Dehumidistat to the (H) terminal of the DXM control
board will bring the unit on in Reheat Mode if
there is no call for cooling. When the Humidistat/
Dehumidification call is removed or satisfied the unit
will shut down.
NOTE: Cooling always overrides Reheat
Mode. In the Cooling mode, the unit cools and
dehumidifies. If the cooling thermostat is satisfied
but there is still a call for dehumidification, the
unit will continue to operate in Reheat Mode.
ClimaDry Component Functions
The ClimaDry option consists of the
following components:
• Proportional Controller
• Supply Air Sensor
• Motorized Valve
• Internal Loop Pump
• Hydronic Reheat Coil

reheat coil during the reheat mode of operation. The
proportional controller sends a signal to the motorized
valve based on the supply air temperature.
The internal loop pump circulates condenser water
through the hydronic reheat coil during the reheat mode
of operation. In this application, the internal loop pump
is only energized during the reheat mode. The Hydronic
Coil is utilized to reheat the air to the setpoint of the
proportional controller. Condenser water is diverted by
the motorized valve and pumped through the hydronic
reheat coil by the internal loop pump in proportion to the
control setpoint. The amount of reheating is dependent
on the setpoint and how far from setpoint the supply
air temperature is. The factory setpoint is 72°F [22°C],
generally considered “neutral” air.
ClimaDry Application Considerations
The reheat coil adds a small amount of resistance to the
air stream. Consult the correction tables on page 8 of
this manual for details.
Unlike most hot gas reheat options, the ClimaDry option
will operate over a wide range of EWTs. Special flow
regulation (water regulating valve) is not required for
low EWT conditions. Temporary, slight overcooling of
the space may result on rare occasions with ground
loop (geothermal) systems during extremely low EWT
conditions. Since dehumidification is generally only
required in cooling, most ground loop systems will not
experience these conditions.
Water-Source Heat Pumps with ClimaDry should not be
used as make-up air units. These applications require
equipment specifically designed for make-up air.

� CAUTION! �

The Proportional Controller operates on a 24 VAC
power supply and automatically adjusts the water valve
based upon the Supply Air Sensor. The Supply Air
Sensor senses supply air temperature at the blower inlet
providing the input signal necessary for the proportional
control to drive the motorized valve during the reheat
mode of operation. The Motorized Valve is a proportional
actuator/three-way valve combination used to divert
the condenser water from the coax to the hydronic

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Figure 2: ClimaDry Schematic

Water Out
(To Water Loop)

Water In
(From Water Loop)

Refrigerant In
(Cooling)

Mixing Valve

Internal Pump

COAX

Refrigerant Out
(Cooling)

Note:
All components shown
are internal to the heat
pump unit.

Leaving
Air
Entering Air

Evaporator Coil

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Reheat
Coil

Table 4: Tranquility 27™ Blower Performance Data
Residential
Units Only

Airflow in CFM with wet coil and clean air filter

Model

026

038

049

064

Max
ESP
(in. wg)

Fan
Motor
(hp)

Tap
Setting

Cooling Mode

Dehumid Mode

Heating Mode
Fan

AUX
CFM

Aux/
Emerg
Mode

Stg 1

Stg 2

Fan

Stg 1

Stg 2

Fan

Stg 1

Stg 2

0.50

1/2

810

950

475

630

740

475

920

1060

475

1060

0.50

1/2

725

850

425

560

660

425

825

950

425

950

0.50

1/2

620

730

370

490

570

370

710

820

370

820

0.50

1/2

520

610

300

600

690

300

690

0.50

1/2

1120

1400

700

870

1090

700

1120

1400

700

1400

0.50

1/2

1000

1250

630

780

980

630

1000

1250

630

1350

0.50

1/2

860

1080

540

670

840

540

860

1080

540

1350

0.50

1/2

730

900

450

0.75

1460

1730

730

900

450

1350

870

1140

1350

870

1560

1850

870

1850

0.75

1300

1550

780

1020

1210

780

1400

1650

780

1660

0.75

1120

1330

670

870

1040

670

1200

1430

670

1430

0.75

940

1120

560

1010

1200

560

1350

0.75

1670

2050

1020

1300

1600

1020

1860

2280

1020

2280

0.75

1500

1825

920

1160

1430

920

1650

2050

920

2040

0.75

1280

1580

790

1000

1230

790

1430

1750

790

1750

0.75

1080

1320

660

1200

1470

660

1470

Factory shipped on Tap Setting 2
During Auxiliary operation (residential units only) the CFM will run at the higher of the heating or AUX settings
Airflow is controlled within +/- 5% up to Max ESP shown with wet coil and standard filter

Tranquility 27™ (TT) Series with ClimaDry Reheat Option
All Tranquility 27™ (TT) units have an ECM fan motor as a standard feature. The small
additional pressure drop of the reheat coil causes the ECM motor to slightly increase RPM to
overcome the added pressure drop, and maintain selected CFM up to the maximum ESP.

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Table 5: Tranquility 20™ ECM Blower Performance Data
Residential
Units Only

Airflow in CFM with wet coil and clean air filter

Model

018

024

030

036

042

048

060

070

Max
ESP
(in. wg)

0.50

0.75

Fan
Motor
(hp)

1/2

Cooling Mode

Dehumid Mode

Heating Mode
Fan

AUX
CFM

Aux/
Emerg
Mode

750

380

750

570

700

350

700

510

620

310

650

430

530

270

650

470

870

1060

470

1060

660

420

780

950

420

950

600

360

670

820

390

820

570

690

340

690

560

1000

1230

560

1230

780

500

900

1100

500

1100

580

700

450

800

980

450

980

Tap
Setting

Stg 1

Stg 2

Fan

Stg 1

Stg 2

Fan

Stg 1

Stg 2

620

750

380

480

590

380

620

570

700

350

450

550

350

510

620

310

400

480

310

430

530

270

780

950

470

610

740

700

850

420

540

630

770

360

490

550

670

300

920

1130

560

720

880

820

1000

500

640

740

900

450

660

800

400

700

850

400

850

1150

1400

700

900

1090

700

1150

1400

700

1400

1020

1250

630

800

980

630

1020

1250

630

1350

890

1080

540

690

840

540

890

1080

540

1350

740

900

450

750

920

450

1350

1290

1580

790

1010

1230

790

1290

1580

790

1580

1150

1400

700

900

1090

700

1150

1400

700

1400

1050

1280

640

820

1000

640

1020

1240

640

1350

920

1120

560

900

1080

560

1350

1420

1730

870

1110

1350

870

1520

1850

865

1850

1270

1550

780

990

1210

780

1350

1650

775

1650

1180

1440

720

920

1120

720

1190

1450

720

1450

1050

1280

640

1020

1250

640

1350

1680

2050

1030

1310

1600

1030

1870

2280

1030

2280

1500

1830

910

1170

1420

910

1680

2050

910

2050

1400

1700

850

1090

1330

850

1480

1800

850

1800

1300

1580

790

1270

1550

790

1550

1830

2230

1100

1420

1740

1100

1830

2230

1100

2230

1600

1950

980

1250

1520

980

1720

2100

980

2100

1440

1750

880

1120

1360

880

1670

1950

880

1950

1200

1580

790

1460

1780

790

1780

See ECM control section for details on setting taps.

Tranquility 20™ (TS) Series with ClimaDry Reheat Option (ECM Motor)
All Tranquility 20™ (TS) units with optional ECM fan motor automatically adjust for the reheat coil. The
small additional pressure drop of the reheat coil causes the ECM motor to slightly increase RPM to
overcome the added pressure drop, and maintain selected CFM up to the maximum ESP.

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Table 6: Tranquility 20™ (TS) Series PSC Blower Performance Data
(Without ClimaDry)
Model

018

024

030

036

042

048

060

070

Airflow (cfm) at External Static Pressure (in. wg)

Fan
Speed

Rated
Airflow

Min
CFM

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.60

0.70

600

450

704

708

711

702

693

692

690

683

675

658

640

598

515

492

MED

600

450

602

601

599

590

581

583

585

579

573

560

547

LOW

600

450

531

529

527

522

517

512

506

501

495

479

462

850

600

965

960

954

943

931

923

914

898

882

862

842

794

725

686

623

875

MED

850

600

841

833

825

817

809

800

790

777

763

747

731

LOW

850

600

723

715

707

703

698

689

680

668

656

642

627

950

750

1271

1250

1229

1207

1185

1164

1143

1118

1093

1061

1029

953
822

MED

950

750

1048

1037

1025

1016

1007

994

981

962

943

915

886

LOW

950

750

890

887

884

879

874

865

855

842

829

809

789

1250

900

1411

1407

1402

1390

1378

1370

1361

1326

1290

1248

1205

1092

1064

1035

997

958

MED

1250

900

1171

1164

1156

1145

1133

1113

LOW

1250

900

983

967

950

943

936

1400

1050

1634

1626

1618

1606

1594

1583

1571

1539

1507

1464

1420

1115

1060

MED

1400

1050

1332

1323

1314

1298

1282

1263

1243

1206

1169

LOW

1400

1050

1130

1109

1088

1086

1084

1066

1048

1052

1055

1600

1200

1798

1781

1764

1738

1711

1688

1665

1630

1595

1555

1514

1384

1382

1379

1375

1371

1356

1341

1318

1294

1261

1227

1083

942

1265

1078

1420

1239

0.90

1.00

635

753

MED

1600

1200

LOW

1600

1200

1950

1500

2311

2306

2300

2290

2279

2268

2257

2233

2209

2175

2140

2088

1990

1901

1856

1752
1582

MED

1950

1500

2058

2049

2039

2028

2016

2000

1983

1966

1949

1935

1920

1874

1807

1750

1670

LOW

1950

1500

1868

1863

1858

1848

1838

1822

1806

1799

1792

1749

1699

1636

1570

2100

1800

2510

2498

2486

2471

2455

2440

2424

2401

2377

2348

2318

2247

2161

2078

1986

MED

2100

1800

2171

2167

2162

2158

2153

2135

2117

2101

2085

2024

1971

1891

1823

LOW

2100

1800

2010

2008

2006

1992

1977

1962

1947

1892

1851

Black areas denote ESP where operation is not recommended.
Units factory shipped on medium speed. Other speeds require field selection.
All airflow is rated and shown above at the lower voltage if unit is dual voltage rated, e.g. 208V for 208-230V units.

0.80

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

1855

Table 7: ClimaDry Reheat Coil Pressure Drop - TS Units (PSC Motor)
Coil Face
Velocity
FPM

TSH/V/D with Reheat ESP Loss
TSH/V/D
018
In. of Water

TSH/V/D
024, 030
In. of Water

TSH/V/D
036
In. of Water

TSH/V/D
042, 048
In. of Water

TSH/V/D
060, 070
In. of Water

200

0.037

0.033

0.031

0.028

0.026

250

0.052

0.046

0.042

0.038

0.034

300

0.077

0.066

0.059

0.051

0.044

350

0.113

0.096

0.085

0.073

0.061

400

0.181

0.160

0.145

0.131

0.117

450

0.242

0.226

0.215

0.205

0.194

500

0.360

0.345

0.335

0.326

0.316

For TS units with ClimaDry Reheat coil applications, calculate face velocity of the entering air. From the table above, find ESP for Reheat application.
The loss includes wet coil loss.

Example:
Reheat coil pressure drop can be determined from the above table. Coil velocity (FPM) = Airflow (CFM) / Face Area (sq. ft.).
1) TSH036 has a face area of 4.86 sq. ft. (see physical data table in I.O.M.).
2) At 1,100 cfm, coil velocity (FPM) = 1,100 / 4.86 = 226 FPM.
3) From above table, it will be necessary to subtract 0.037 from the blower performance ESP.
4) On medium speed, the TSH036 (without reheat - see blower table) can deliver 1,100 CFM at 0.28 in. wg. with the
standard PSC motor; with the reheat coil, it now delivers 1,085 CFM at 0.28 in. wg. or 1,100 CFM at 0.24 in. wg.
5) If the decrease in airflow is acceptable, no changes are necessary. Otherwise, high speed fan should be used
to overcome the pressure drop of the reheat coil.
Table 8: TS Air Coil Face Area
Model
Coil Face
Area, sq. ft.
(sq. m)

018
Horiz.

024

Vert.

Horiz.

Vert.

030
Horiz.

Vert.

036
Horiz.

Vert.

042
Horiz.

Vert.

048
Horiz.

Vert.

060
Horiz.

Vert.

070
Horiz.

Vert.

3.38
3.33
3.88
3.89
3.88
3.89
4.86
4.86
5.56
5.56
5.56
5.56
6.25
6.25
6.25
6.25
(0.3135) (0.3097) (0.3600) (0.3613) (0.3600) (0.3613) (0.4516) (0.4516) (0.5161) (0.5161) (0.5161) (0.5161) (0.5806) (0.5806) (0.5806) (0.5806)

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Tranquility 27™ with ClimaDry™ Electrical Wiring Diagram - 96B0037N74

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Flushing/Purging Units with ClimaDry
Units equipped with ClimaDry must be flushed/purged
with a flush cart. Detailed general flushing /purging
instruction can be found in the Flow Controller III IOM.
The unit must be powered (but not operating) during
flushing/purging. Unit power is required to operate
the three-way modulating valve during flushing.
When flushing/purging units equipped with ClimaDry
the earth loop should be fully flushed/purged before
attempting to flush/purge the heat pump. Once the
earth loop is flushed, position the flushing valves to
flush the heat pump. Then with flushing flow re-directed
through the unit, energize the modulating three-way
dehumidification valve to allow flow through the
dehumidification hydronic circuit.
Energize the modulating three-way dehumidification
valve by removing the red wire from the ACC1 ‘N.O.’
terminal on the DXM board. Connect this wire to the
ACC1 ‘NC’ terminal of the DXM controller, as shown
in figure 1, to energize the modulating three-way
dehumidification valve. Once energized, the valve will
take 45 – 75 seconds to fully shift. Continue flushing
during this time. After the valve has completed its shift,
use the air bleed from the top of the reheat coil to purge
air from the coil.
Note, if the ClimaDry sensor, located in the supply
air stream is above 70°F it must be disabled to allow
the modulating valve to shift. Disable this sensor by
removing the white wire from the Low Voltage Terminal
Block (LVTB) shown in figure 1.

Under extreme circumstances this procedure may be
required multiple times to purge all air from the circuit.
After completing the flushing/purging procedure, restore
the red wire to the ACC1 ‘N.O.’ terminal on the DXM for
normal operation. Return the white sensor wire to the
LVTB, if it was removed, as shown in figure 2.
White Thermistor Wire

Red Three-Way Valve Wire

Figure 2. Normal Unit Wiring
Extra care must be taken when using non-pressurized
flow centers to ensure all air is removed from the unit
and no additional air is allowed into the system. If air is
allowed to collect in the ClimaDry piping, nuisance trips
may occur. Additional flush/purge cycles may be used
when required.

Figure 1. Flushing/Purging Wiring
White Thermistor Wire
Red Three-Way Valve Wire

De-energize the valve by removing the red wire from the
ACC1 ‘NC’ terminal on the DXM board. The valve will
spring return to its normal position in just a few seconds.
After the valve has fully returned, repeat the process of
running the valve through its cycle and purging air from
the reheat coil.

ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B

Revision Log:
Date

Page #

18 April, 2008

All

AIR CONDITIONING &
REFRIGERATION
INSTITUTE

Description
First Published

ISO 9001:2000
Certified

Quality: First & Always

35 Earl Martin Dr.
Elmira, ON N3B 3L4
Phone: 800-367-9810

*97B0051N01*

Fax: 877-684-3112
www.nextenergy.ca

97B0051N01

ClimateMaster works continually to improve its products. As a result, the design and speciﬁcations of each product at the time for order may be
changed without notice and may not be as described herein. Please contact ClimateMaster’s Customer Service Department at 1-405-745-6000 for
speciﬁc information on the current design and speciﬁcations. Statements and other information contained herein are not express warranties and do
not form the basis of any bargain between the parties, but are merely ClimateMaster’s opinion or commendation of its products.
The management system governing the manufacture of ClimateMaster’s products is ISO 9001:2000 certiﬁed.
© ClimateMaster, Inc. 2008

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : Yes
Tagged PDF                      : Yes
XMP Toolkit                     : Adobe XMP Core 4.1-c036 46.277092, Fri Feb 23 2007 14:16:18
Instance ID                     : uuid:4794b52e-0749-a246-a4c0-ce93f39a0d42
Document ID                     : adobe:docid:indd:3d3a82d0-d4ca-11dc-87b2-e617c3e72752
Rendition Class                 : proof:pdf
Derived From Instance ID        : b7d76c76-d175-11dc-bfa4-ebc70220002f
Derived From Document ID        : adobe:docid:indd:8eef7f6e-338e-11db-b702-b40f064b5e1e
Manifest Link Form              : EmbedByReference
Manifest Reference File Path    : /Users/dweber/Desktop/Graphics/NEI Logo/NextLogo_geothermal_black.eps
Create Date                     : 2008:04:21 13:24:15-05:00
Modify Date                     : 2008:06:05 13:33:23-04:00
Metadata Date                   : 2008:06:05 13:33:23-04:00
Creator Tool                    : Adobe Illustrator CS3
Thumbnail Width                 : 200
Thumbnail Height                : 256
Thumbnail Format                : JPEG
Thumbnail Image                 : (Binary data 8058 bytes, use -b option to extract)
Format                          : application/pdf
Producer                        : Adobe PDF Library 7.0
Trapped                         : False
N Pages                         : 1
Has Visible Transparency        : False
Has Visible Overprint           : True
Max Page Size W                 : 8.500000
Max Page Size H                 : 11.000000
Max Page Size Unit              : Inches
Font Name                       : HelveticaNeue, ArialMT, Code39-Wide-Regular, Avenir-Light, Futura
Font Family                     : Helvetica Neue, Arial, Code39 Wide-Regular, Avenir, Futura
Font Face                       : Regular, Regular, Wide-Regular, 35 Light
Font Type                       : TrueType, TrueType, Unknown, Type 1, Unknown
Font Version                    : 6.0d5e1, Version 2.60, Version 2.007;PS 002.000;Core 1.0.38;makeotf.lib1.7.9032, 001.000, Version 2.007;PS 002.000;Core 1.0.38;makeotf.lib1.7.9032
Font Composite                  : False, False, False, False, False
Font File Name                  : HelveticaNeue.dfont, Arial, MyriadPro-Regular.otf, AveniLig; Avenir, MyriadPro-Regular.otf
Plate Names                     : Black
Swatch Group Name               : Default Swatch Group
Swatch Group Type               : 0
Page Count                      : 14
Creator                         : Adobe Illustrator CS3

EXIF Metadata provided by EXIF.tools

Toshiba Dehumidifier Tranquility 20 Application Guide

Navigation menu

Versions of this User Manual:

Views

Navigation