DES CHAMPS PRODUCTS
MODULAR OUTSIDE AIR CONDITIONING SYSTEMS
A Complete Family of Standard Models for
Heat Recovery & Humidity Control
MOACS Models 1,000 – 10,000 SCFM
MODEL MBB
MODULAR OUTSIDE AIR CONDITIONER
MODEL MWB
MODULAR WRINGER ®
MODELS MBS/MBT
MODULAR HEAT RECOVERY
MODELS MWS/MWT
MODULAR WRINGER® PLUS
INTRODUCTION
The Modular Outside Air Conditioning System (MOACS) is a family of six pre-engineered models for
heat recovery and humidity control. These modular-type packaged units range from 1,000 through
10,000 SCFM, and are suited for all climates, applications, and budgets. Each of the six models
offers the flexibility of several module configurations with options. Modules and options include:
fans; heat pipe heat exchangers; rotary heat exchangers (wheels); DX or chilled water coil sections;
anti-microbial filters with 30% or 90% efficiency rating; integral or remote condensing units; gas,
electric, hot gas, or hydronic heating modules; and utility modules for field-installed components.
The condensing section, which can be ordered integral to the units, features an 11.0 EER and mixmatched multiple compressors to ensure optimum capacity control without the need for energywasting hot-gas bypass. All units are equipped with a programmable microprocessor-based digital
controller.
H UM I D I T Y C O NT R OL
MODULAR OUTSIDE AIR CONDITIONER
Basic air conditioning
Model MBB consists of dehumidifying cooling coils, along with heating,
cooling, refrigeration, and filtration options.
MODULAR WRINGER
Humidity control with free precool and reheat
Model MWB utilizes a heat pipe heat exchanger for free precooling and reheat, along with heating,
cooling, refrigeration, and filtration options.
H E AT RE C O V E RY
MODULAR SENSIBLE HEAT RECOVERY
Sensible heat recovery
Model MBS utilizes a heat pipe heat exchanger for sensible heat recovery, along with heating, cooling, refrigeration, and filtration options.
MODULAR TOTAL HEAT RECOVERY
Sensible and latent heat recovery
Model MBT utilizes a rotary heat exchanger for total (sensible and latent) heat recovery, along with
heating, cooling, refrigeration, and filtration options.
H UM I D I T Y C O NT R OL P L US HEAT RECOVERY
MODULAR SENSIBLE WRINGER PLUS
Humidity control plus sensible heat recovery
Model MWS consists of two heat pipe heat exchangers, along with heating, cooling, refrigeration, and
filtration options. In summer, one heat pipe heat exchanger provides free sensible precooling, and the
other heat pipe provides reheat by recovering energy from the exhaust air. In winter, both heat pipes
provide sensible heat recovery.
MODULAR TOTAL WRINGER PLUS
Humidity control plus sensible and latent heat recovery
Model MWT consists of a heat pipe heat exchanger and a rotary heat exchanger, along with heating,
cooling, refrigeration, and filtration options. In summer, the rotary heat exchanger provides free total
(sensible and latent) precooling, and the heat pipe heat exchanger provides reheat by recovering
energy from the exhaust air. In winter, the rotary heat exchanger provides total heat recovery and the
heat pipe provides additional sensible heat recovery.
MODULAR OUTSIDE AIR CONDITIONER
MODEL MBB
The Modular Outside Air Conditioner is a packaged ventilation air system that provides basic mechanical cooling.
It controls space humidity at full and part-load conditions
with the addition of optional reheat.
FE ATURES
Supplies 100% outside air
Efficient low-cost cooling
Low ambient conditions
11.0 EER condensing unit
1,000 –10,000 SCFM
ETL listed
Cooling coil (DX or chilled water)
Reheat coil (hot water, steam, indirect gas, or hot-gas)
Preheat coil (hot water or steam)
Integral or remote air-cooled condensing section
Single-point electrical connection
Roof curb
Down discharge
Dampers
SC H E M ATI C O F A I R F L O W
T3
OPTIONAL
REHEAT
T2
COOLING/
DEHUMIDIFICATION COIL
%
T1
50
%
70
%
90
%
PS YC H R O M E T R I C S
• T1 is outdoor air at design
conditions.
• T2 is the condition of the
supply air off the
dehumidification coil.
• T3 is supply air after it
has been reheated.
30
O P E R A T I O N
STANDARD OPTIONS
OUTDOOR AIR
ON
TI
A
IC
IF
ID
M
HU
DE
T2
AD
LO
T1
OPTIONAL REHEAT
T3
ITY
UMID
IVE H
T
A
L
RE
10%
35
45
55
65
75
85
DRY BULB TEMPERATURE (DEGREES F)
95
105
115
1
DES CHAMPS PRODUCTS
MODULAR WRINGER®
MODEL MWB
The Modular Wringer is a packaged humidity control
system with free precool and reheat, supplied with an
integral heat pipe heat exchanger. It efficiently controls
space humidity at full and part-load conditions.
FEATURES
Supplies 100% outside air
Efficient humidity control
Energy saving heat pipe Wringer® loop
Improves indoor air quality (IAQ)
Meets ASHRAE 62-1989 requirements
11.0 EER condensing unit
1,000 –10,000 SCFM
ETL listed
Dehumidification coil (DX or chilled water)
Reheat coil (hot water, steam, and indirect gas)
Preheat coil (hot water or steam)
Integral or remote air-cooled condensing section
Single-point electrical connection
Summer drybulb temperature control
Roof curb
Down discharge
Dampers
S C H E M AT I C O F A I R F LO W
T4
T3
COOLING/
DEHUMIDIFICATION COIL
HEAT PIPE
T2
50
%
70
%
T1
90
%
P S Y C H R O M E T R IC S
30
%
O P E R A T I O N
STANDARD OPTIONS
• T1 is outside air at design
conditions.
• T2 is the condition of air
after precooling in the heat
exchanger.
• T3 is the condition of
the supply air off the
dehumidification coil.
• T4 is supply air after it
has been reheated by
the heat exchanger.
ON
TI
A
IC
IF
ID
M
HU
DE
T3
AD
LO
PRECOOLING
T2
FREE REHEAT
OUTSIDE AIR
T1
T4
Y
MIDIT
E HU
LATIV
E
R
10%
35
2
45
55
65
75
85
DRY BULB TEMPERATURE (DEGREES F)
95
105
115
DES CHAMPS PRODUCTS
M O D U L A R H E AT R E C O V E R Y S Y S T E M S
MODEL MBS–SENSIBLE HEAT RECOVERY
MODEL MBT–TOTAL HEAT RECOVERY
The Modular Heat Recovery packaged systems provide
sensible and total heat recovery.
FE ATURES
Supplies 100% outside air
Efficient humidity control
Sensible or total heat recovery
MBS: Efficient heat recovery in winter-dominant climates
MBT: Sensible and latent heat transfer in summerdominant climates
Meets ASHRAE 62-1989 requirements
11.0 EER condensing unit
1,000–10,000 SCFM
ETL listed
STANDARD OPTIONS
Auxiliary cooling (DX or chilled water)
Auxiliary heating (hot water, steam, and indirect gas)
Preheat coil (hot water or steam)
Integral or remote air-cooled condensing section
Single-point electrical connection
Roof curb
Down discharge
Dampers
O P E R A T I O N
SC H E M ATI C O F A I R F L O W
T6
T5
T1
T4
T2
T3
ROTARY WHEEL OR COOLING
HEAT PIPE
COIL
REHEAT
COIL
PSYCHROMETRICS
A
LO
ON
I
AT
IC
IF
D
I
M
HU
DE T3
REHEAT
D
PRECOOLING OUTDOOR AIR
T4,T5
N
IO
AT
C
I
IF
ID
M
U
H
DE
T3
REHEAT
T1
T2
EXHAUST
T6
L
45
55
65
75
85
95
DRY BULB TEMPERATURE (DEGREES F)
105
%
50
%
70
%
90
%
G
IN
OL
O
C
T6
RE
T2 P
T
S
U
HA
EX
OUTDOOR AIR
T1
T4, T5
ITY
HUMID
TIVE
RELA
10%
Y
MIDIT
E HU
LATIV
E
R
10%
35
MODEL MBT
30
30
%
50
%
70
%
90
%
M OD E L MBS
• T1 is outdoor air at design conditions.
• T2 is the condition of the supply air
after precooling in the heat exchanger.
• T3 is the condition of the
supply air off the cooling coil.
• T4 is supply air after it has
been reheated.
• T5 is return air at space
design conditions.
• T6 is the return air
condition exiting the
D
heat exchanger.
OA
115
35
45
55
65
75
85
95
DRY BULB TEMPERATURE (DEGREES F)
105
115
3
MODULAR WRINGER PLUS
MODEL MWS–SENSIBLE WRINGER PLUS
MODEL MWT–TOTAL WRINGER PLUS
The Modular Wringer Plus systems are packaged humidity control systems with sensible or total heat recovery.
These systems efficiently control space humidity at full
and part-load conditions.
FEATURES
Supplies 100% outside air
Efficient humidity control
Sensible and total heat recovery
85% efficient winter heat recovery
Building pressurization control
Improves indoor air quality (IAQ)
Meets ASHRAE 62-1989 requirements
11.0 EER condensing unit
1,000–10,000 SCFM
ETL listed
STANDARD OPTIONS
SC H E M ATI C O F A I R F L O W
Auxiliary cooling (DX or chilled water)
Auxiliary heating (hot water, steam, and indirect gas)
Preheat coil (hot water or steam)
Integral or remote air-cooled condensing section
Single-point electrical connection
Summer drybulb temperature control
Roof curb
Down discharge
Dampers
COOLING
COIL
T4
T2
T3
T5
T1
T8
T7
HEAT
PIPE
ROTARY WHEEL OR
HEAT PIPE
PSYCHROMETRICS
90
%
MO D EL MWS
70
%
30
%
50
%
50
%
70
%
A
LO
ON
I
AT
IC
IF
D
I
M
T7
HU
E
D
T3
REHEAT T4
D
PRECOOLING
T2
• T1 is outdoor air at design conditions.
• T2 is the condition of the supply air after
precooling in the heat recovery heat exchanger.
• T3 is the condition of the supply air off the cooling coil.
• T4 is the condition after it has been reheated
through the heat pipe heat exchanger.
• T5 is the supply air after it has been
MODEL MWT
reheated.
• T6 is return air at space design
conditions.
• T7 is the return air condition
in between heat exchangers.
• T8 is the return air
condition exiting the
OUTDOOR AIR
AD
T1
LO
heat exchanger.
G
N
OUTDOOR AIR
T1
30
%
T6
90
%
O P E R A T I O N
REHEAT
COIL
O
TI
CA
FI
I
ID
UM
T7
H
DET3
REHEAT
T8
T5,6
EXHAUST
T2
T4
LIN
OO
T8
EC
R
P
EXHAUST
T5,6
Y
MIDIT
E HU
LATIV
E
R
10%
ITY
UMID
IVE H
ELAT
R
%
10
35
4
45
55
65
75
85
95
DRY BULB TEMPERATURE (DEGREES F)
105
115
35
45
55
65
75
85
95
DRY BULB TEMPERATURE (DEGREES F)
105
115
DES CHAMPS PRODUCTS
MOACS MODULES & MODULE OPTIONS
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AVAI L A B L E M O D UL E S BY UNIT
MODULE
Outside Air
Supply
Outside Air/
Exhaust Air
Heat Pipe
Heat Exchanger
Rotary Wheel
Heat Exchanger
Fan/Coil
MBB
MWB
•
•
•
MBS
MBT
MWS
MWT
•
•
•
•
•(2)
•
•
•
•
•
•
Fan
•
•
•
•
Coil
•
•
•
•
•
•
•
•
•
•
•
•
Gas Furnace
•
•
Supply Air/
Return Air
Utility
•
•
•
•
•
•
Condensing
Section
•
•
•
•
•
•
5
DES CHAMPS PRODUCTS
C O N S T R U C T I O N F E AT U R E S
D E S IG N ED F O R E A S Y IN S TALLATION
• Steel Base
• Single-Point Electrical Connection
• Simplified Rigging
S I MP L E M A I N T E N A N C E
• Easily Serviced
• Ready Access
T R O UB L E -F R E E P E R F O R MANCE
•
•
•
•
•
•
•
Commercial-Quality Condensing Section
IAQ Compatible Construction
All-Welded Aluminized Steel Floor
Stainless Steel Drain Pans
Heavy-Duty Fans
High-Density Insulation
Rigid Casing
A P P L I C AT I O N F E AT U R E S
SOLVES DESIGN PROBLEMS
• Meets Codes
• Solves Existing Indoor Air Quality Problems
• Solves Part-Load Performance Problems
EASY TO SELECT AND APPLY
• Modular Design
• Simple Selection
• Compact
FAST TURNAROUND
• Standard Product
simple to install
• Quick, Easy Installation
• Flexible
INEXPENSIVE TO OWN
• Reduced Energy Cost
• Reduces Loads on Air Conditioning Equipment
• Permits Effective Use of High-Efficiency Air
Conditioning Equipment
• Low Maintenance
DES CHAMPS PRODUCTS
225 South Magnolia Avenue • Buena Vista, VA • 24416
540.291.1111 • Fax 540.291.2222 • marketing@des-champs.com • www.des-champs.com
MOACS 10-27-07/PDF © 2007 Des Champs Technologies