Multiaqua MAC120-02-N-R407, MHCCW04-00-03, MHCCW04-02-03, MHCCW04-00, MHCCW04-03 Operating Manual

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Table of Contents (Hydronic)

About Us System Modeling Software Multi-Zoning and Energy Cost Features and Benefits Water Products Overview DX Products Overview Accessory Products Overview Equipment Sound Data

Page

1 2 3 4 5 6 7 8

MAC120 Air-Cooled Chiller

Nomenclature Breakdown Guide Specifications Product Specifications Capacities Installation and Operating Manual Wiring Diagrams Certified Drawing

MAC036,048 and 060 Air Cooled Chiller

Nomenclature Breakdown Guide Specifications Product Specifications Capacities Circulating Pump Curve Installation and Operating Manual Wiring Diagrams Certified Drawing

MHCCW (Ceiling Concealed) 2-pipe Chilled Water with Electric Heat. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Chilled Water Capacities Hot Water Capacities Electric Heat Capacities CFM and Glycol Adjustments Capacity Adjustment Factors Installation and Operating Manual Wiring Diagrams Certified Drawing

9 10 11 13 15 17 34 43

44 45 46 48 50 56 57 74 83

84 85 86 88 89 94 99

100 101 102 113 116

MHNCCW (Ceiling Concealed) 4-Pipe Chilled and Hot Water. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Chilled Water Capacities Hot Water Capacities CFM and Glycol Adjustments Capacity Adjustment Factors Installation and Operating Manual Wiring Diagrams Certified Drawing

117 118 119 121 122 127 132 133 134 145 147

Table of Contents (Hydronic Continued)

MCCW (Ceiling Concealed) 2-Pipe Chilled and Hot Water. 4 to 5 Tons

Page

148 149 150 152 153 155 157 157 158 169 170

MHWW (Hi-Wall) 2-Pipe Chilled and Hot Water. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Chilled Water Capacities Hot Water Capacities Capacity and Glycol Adjustment Factors Installation and Operating Manual Wiring Diagrams Certified Drawing

CFFWA (Universal Mount) 2-Pipe Chilled and Hot Water. 1 to 5 Tons

CWA2 (Air Handler) 2-pipe Chilled Water with Electric Heat. 1.5 to 5 Tons

171 172 173 175 176 181 186 187 202 206

207 208 209 211 212 218 224 225 231 232

233 234 235 237 238 243 246 247 249 257 258

CWA4 (Air Handler) 4-pipe Chilled and Hot Water 2 to 5 Tons

259 260 261 263 264 268 269 270 271 279 280

Table of Contents (Direct Expansion)

MHCCX (Ceiling Concealed) DX with Electric Heat. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Capacities CFM Adjustments Installation and Operating Manual Wiring Diagrams Certified Drawing

Page

281 282 283 285 287 288 289 300 304

MCCX (Ceiling Concealed) DX Only. 4 to 5 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Capacities CFM Adjustments Installation and Operating Manual Wiring Diagrams Certified Drawing

MHNCCX (Ceiling Concealed) DX with Hot Water. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications DX Capacities CFM Adjustments Glycol Adjustments Capacity Adjustment Factors Hot Water Capacities Installation and Operating Manual Wiring Diagrams Certified Drawing

MHWX (Hi-Wall) DX Only. 1 to 3 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Capacities Installation and Operating Manual Wiring Diagrams Certified Drawing

305 306 307 309 309 309 310 316 317

318 319 320 322 323 323 323 324 325 330 341 343

344 345 346 348 348 349 363 371

FSFCA (Universal Mount) DX Only. 1 to 5 Tons

Nomenclature Breakdown Guide Specifications Product Specifications Capacities Installation and Operating Manual Wiring Diagrams Certified Drawing

372 373 374 376 376 377 383 384

Table of Contents (Accessories)

Accessories

Storage Tanks Expansion Tank and Air Scoop Liquid Solution Bypass Valve Liquid Solution Control Valves Condensate Pump Control Thermostats Wye Strainer Circulating Pumps (1,1.5 & 2 HP) Circulating Pump Curve (1,1.5 & 2 HP) Circulating Pumps (.5 HP) Circulating Pump Curve (.5 HP) Ceiling Concealed Enclosures

Sample Piping Banked Chiller Configuration

Page

385 387 388 389 391 392 395 396 397 398 399 400

407 408 409Warranty Information

About Us

Setting new industry standards is what we do best. At Multiaqua, our commitment to creating innovative air conditioning products has made us one of the most respected organizations in the industry. From concept to market, Multiaqua takes a hands-on approach to ensure that each and every step meets our stringent standards of quality, durability and dependability.

All Multiaqua products are designed with the future in mind. That’s why all air conditioning products are flexible, which makes it easy to adapt to virtually all kinds of building applications.

Whether it’s residential or commercial air conditioning needs, Multiaqua has the products to meet or exceed all expectations.

Manufacturing Excellence

Our beliefs in quality is more than just a practice, it is something we take great pride in. Our quality management system is integrated with international quality requirements of ISO 9002. That is why some of the biggest OEM names in the air conditioning industry use Multiaqua products in their units. In fact, Multiaqua chillers were part of air conditioning system that won first place awards in the Quality Home Comfort Awards Competition, which was created to honor the best in residential comfort system design and application.

Our products are tested and certified to the UL, CE, ETL, UL1995 and ARI standards; the most respected and stringent in the world.

Experience The Future

At Multiaqua, we invite you to come experience the future of air conditioning and see why more and more companies are discovering the new standard of air conditioning excellence. And by combining cost effectiveness, innovation and quality, Multiaqua will continue to provide air conditioning products that will be the most sought after in the world.

Multiaqua Makes Hydronic System Design Easy

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)

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)

NAME: MULTIAQU LOCATION: SOUTH CAROLINA

60000 BTU/H

12.6 GPM

ICL-1

55°

45°

100'

1.25 "

36000 BTU/H

ICL-

45°

1.25" 100'

7.6 GPM

145'

1.25

24000 BTU/

ICL-3

55°F

45°

145'

1.25"

5 GPM

1.25"145'

ICL-4

55°

45°F

145'

1.25

24000 BTU/H

5 GPM

1.5"

1.5

55°

1.5

145'

49 GPM

66.7 FT

145'

BYPASS VALVE

2.5" 1'

2.5"

1.5

1"10'

73.1 GA

STOR-1

24000 BTU/

4.9 GP

ICL-

45°

11.5 GAL

ET-1

1' 2

ICL-7

45°

55°

1.25"5'

117000 BTU/

55°

45°

117 000 BTU/H

55°F

45°F

3600 0 BTU/H

7.6 GPM

9.8 TONS

24.5 GPM 50%

CH- 2

9.8 TONS

24.5 GPM 50%

CH-1

55°F

30000 BTU/

6.3 GPM

ICL-6

45°

55.4°F

1"5'

1.5 "

2.5" 5'

2.5"5'

1.25"5'

1.5"1' 1.25"5'

P-1

Sample Design Shown

Introducing System Modeling Software

Multiaqua has teamed up with HVAC Solutions and would like to introduce the newest version of the HSS Software. This software will contain a selection model that includes Mutiaqua’s Air Cooled Chillers, Fan Coils and Air Handling Units.

HSS software will allow you to drag and drop components to design hydronic systems. It includes the necessary piping, piping components and equipment. It is capable of exporting calculation reports, equipment schedules and a bill of material. Visit www.multiaqua.com for software down load.

Ductless and Ducted Hydronic Air Conditioning & Heating Systems.

FOR MULTIZONING FACILITIES

• Zoning saves energy

• Better Control of Humidity

• Separate Climate in each Room

1. More Energy Efficient Thru Zoned Comfort Cooling.

2. Zoning Allows For Diversity.

3. Diversity and Load Calculations Allows For Reducing The Size of The Outdoor

Power Plant.

4. Banking Chillers Allows For Huge Efficiencies Thru Staging.

5. Helps Control The Growth Of Mold, Mildew and Fungus.

6. Low Installation Costs.

7. No Refrigerant Handling.

8. No Ductwork No Line Sets.

9. Heat & Cool with the Same Units.

10. No Line Length Limitations.

11. Unlimited Tonnage with Single Phase Power.

12. Easy To Expand System.

Think Water !!!

Water Product Overview

Page 44 Page 9

MAC036, 048 & 060 Air Cooled Chiller MAC120 Air Cooled Chiller

• 3, 4 & 5 Ton Air Cooled Chiller

• R 407c Refrigerant

• Horizontal Air Discharge

• Stainless Steel Pump Included

Page 84 Page 117

• 10 Ton Air Cooled Chiller

• Copeland Scroll Compressor Technology • Copeland Scroll Compressor Technology

• R 407c Refrigerant

• Vertical Air Discharge

• Two Stages of Coolin

MHCCW (Ceiling Concealed) Chilled Water 2-Pipe With or Without Electric Heat

• 12,000- 36,000 BTUH

• Available with or without Electric Heat

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• Field Reversible Hand of Connection Coil

• Manual Air Vents

• Discharge May be Ducted for Small Spaces

Page 171 Page 148

MHWW (Hi-Wall) Chilled/Hot Water 2-Pipe

• 9,000- 36,000 BTUH

• High Wall Mounting

• Attractive Seamless Appliance Design

• Cleanable Air Filter Provided

• Wireless Infrared Remote Included

• Wired Controller Option

MHNCCW (Ceiling Concealed) Chilled/Hot Water 4-Pipe

• 12,000-36,000 BTUH

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• Double Field Reversible Hand of Connection Coil

• Manual Air Vents

• Discharge May be Ducted for Small Spaces

MCCW (Ceiling Concealed) Chilled/Hot Water 2-Pipe

• 48,000 – 60,000 BTUH

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• Manual Air Vents

• Discharge May be Ducted for Small Spaces

Page 233

Page 207

Page 259

CWA2 With or Without Electric Heat 2-Pipe

CFFWA Universal Mount Fan Coil 2-Pipe

• 12,000- 60,000 BTUH

• Floor

Low Wall or Horizontal Ceiling Mounting • Up Flow, Left or Right Hand Horizontal Installatio

• Attractive Modular Design

• Cleanable Air Filter Included

• Optional Wireless Remote

CWA4 Chilled & Hot Water 4-Pi

• Available in 2 or 4-Pi

• 18

000- 60,000 BTUH

• Equipped with R4.2 Insulation

• CWA2 in 208/240-1-60 & CWA4 in 120-1-60

• Electric or Hot Water Heat

e Configuration

DX Product Overview

DX Fan Coils are Compatible with R410a Refrigerant and are 13 SEER Compatible

All DX Coils come Shipped From the Factory with a TXV Installed.

MHCCX (Ceiling Concealed) DX 2-Pipe

With or Without Electric Heat

• 12,000-36,000 BTUH

• Available with or without Electric Heat

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• Field Reversible Hand of Connection Coil

• TXV Provided

• Discharge May be Ducted for Small Places

•13 SEER Compatible

MCCX (Ceiling Concealed) DX

• 48,000-60,000 BTUH

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• TXV Provided

• Discharge May be Ducted for Small Spaces

MHNCCX (Ceiling Concealed) DX 4-Pipe with Hot Water

• 12,000-36,000 BTUH

• Ceiling Concealed Design for Clean Installation

• Removes Equipment from Conditioned Space

• Heavy Gauge Metal Cabinet

• Powder Painted Galvanized Steel

• Double Field Reversible Hand of Connection Coil

• TXV Provided

• Discharge May Be Ducted for Small Places

• Hot Water Heating Coil

•13 SEER Compatible

FSFCA (Universal Mount) DX or Heat Pump

• 12,000- 60,000 BTUH

• Floor, Low Wall or Horizontal Ceiling Mounting

• Attractive Modular Design

• Cleanable Air Filter Included

• Optional Wireless Remote

• TXV Provided

•13 SEER Compatible

MHWX (Hi-Wall) DX or Heat Pump

• 9,000- 36,000 BTUH

• High Wall Mounting

• Attractive Seamless Appliance Des

• Cleanable Air Filter Provided

• Wireless Infrared Remote Included

• Wired Control Option 6

Accessories Overview

Page 385 Page 387 Page 388

Storage Tanks

20 & 42 Gallon

Page 389 Page 395 Page 391

Motorized Valves

2 & 3-Way

Page 392 Page 396 Page 398

Expansion Tank & Air Scoop Liquid Solution Bypass Valve

Condensate PumpWye Strainer

Thermostats

EnclosuresCirculating Pumps

January 2008

Multiaqua Equipment Sound Levels

The following will detail the “Sound Levels” of the Multiaqua equipment line.

Air Cooled Chillers

MAC 036, 048, 060 Chillers: 69 dbs (A)

MAC120 Chillers: 75 dbs (A)

Hi-Wall Fan Coils

MHWX-09 / MHWW-09: DX and chilled water Hi-Wall fan coils: 42 dbs (A). MHWX-12 / MHWW-12: DX and chilled water Hi-Wall fan coils: 43 dbs (A). MHWX-18 / MHWW-18: DX and chilled water Hi-Wall fan coils: 45 dbs (A). MHWX-24 / MHWW-24: DX and chilled water Hi-Wall fan coils: 46 dbs (A). MHWX-36 / MHWW-36: DX and chilled water Hi-Wall fan coils: 48 dbs (A).

Universal Mount Fan Coils

FSFCA-04 / CFFWA-04: DX and chilled water Universal Mount fan coils: 42 dbs (A). FSFCA-06, 08 / CFFWA-06, 08: DX and chilled water Universal Mount fan coils: 44 dbs (A). FSFCA-10 / CFFWA-10: DX and chilled water Universal Mount fan coils: 46 dbs (A). FSFCA-10, 12 / CFFWA-10, 12: DX and chilled water Universal Mount fan coils: 48 dbs (A). FSFCA-16, 20 / CFFWA-16, 20: DX and chilled water Universal Mount fan coils: 50 dbs (A).

Hideaway Fan Coils

MHCCX-04 / MHCCW-04: DX / chilled water with electric heat Hideaway fan coils: 42 dbs (A) MHCCX-06 / MHCCW-06: DX / chilled water with electric heat Hideaway fan coils: 44 dbs (A) MHCCX-08 / MHCCW-08: DX / chilled water with electric heat Hideaway fan coils: 46 dbs (A) MHCCX-10 / MHCCW-10: DX / chilled water with electric heat Hideaway fan coils: 48 dbs (A) MHCCX-12 / MHCCW-12: DX / chilled water with electric heat Hideaway fan coils: 49 dbs (A)

MHNCCX-04 / MHNCCW-04: DX / chilled water with hot water heat Hideaway fan coil: 40 dbs (A) MHNCCX-06 / MHNCCW-06: DX / chilled water with hot water heat Hideaway fan coil: 42 dbs (A) MHNCCX-08 / MHNCCW-08: DX / chilled water with hot water heat Hideaway fan coil: 44 dbs (A) MHNCCX-10 / MHNCCW-10: DX / chilled water with hot water heat Hideaway fan coil: 46 dbs (A) MHNCCX-12 / MHNCCW-12: DX / chilled water with hot water heat Hideaway fan coil: 48 dbs (A)

MCCX-16 / MCCW-16: DX and chilled water Hideaway fan coil. 46 dbs (A)

MCCX-20 / MCCW-20: DX and chilled water Hideaway fan coil. 46 dbs (A)

Disclaimer: Specifications are subject to change without notice. All tests conducted in nonechoic chambers. Sound levels were measured at five feet from the unit. Levels were measured using free air delivery.

MAC120 Air-Cooled Chiller

Air-Cooled Chillers for Global Residential

and Light Commercial MicroClimates

MAC120 NOMENCLATURE BREAKDOWN

MAC120 - XX - X - R407

10-Ton Air-Cooled Chiller

Voltage 01 = 208/230-1-50/60 02 = 208/230-3-50/60 03 = 380/460-3-50/60

Available Model Numbers

MAC120-01-N-R407

MAC120-01-L-R407

MAC120-02-N-R407

MAC120-02-L-R407

MAC120-03-N-R407

MAC120-03-L-R407

Accessory Options N= No Options L= Low Ambient Kit

HVAC Guide Specifications

Air-Cooled Liquid Chiller

Nominal Size:

10 Tons

Multiaqua Model Number: MAC120-01-N-407, MAC120-01-L-407

MAC120-02-N-407, MAC120-02-L-407 MAC120-03-N-407, MAC120-03-L-407

Part 1-General

1.01 System Description

Multiaqua air-cooled liquid chillers are designed using scroll compressors and low sound condenser fans.

1.02 Quality Assurance

A. Certified in accordance with U.L. Standard 95, latest version (U.S.A.) B. Construction shall comply with ASHRAE 15 Safety Code, NEC and ASME applicable codes. (U.S.A.

Codes)

C. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard. D. ETL certified. E. Fully load tested at the factory. F. Damage resistant packaging.

1.03 Delivery, Storage and Handling

A. Packaged and readied for shipment from the factory. B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment. C. Stored and handled per manufacturer’s rec o mmendations.

Part 2-Product

2.01 Equipment

A. General:

1. Unit shall be a factory assembled and tested air-cooled liquid chiller.

2. Shall be assembled on heavy gauge steel mounting/lifting rails.

3. Contained within the unit cabinet shall be all factory wiring, piping, controls, refrigerant charge (R407c), POE oil and special accessories required prior to start up.

4. Brass body strainer with 20 mesh screen and blow down shall be supplied in cabinet as a field installable accessory.

B. Unit Cabinet:

1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.

2. Capable of withstanding 500-hour salt spray test in accordance with the ASTM (U.S.A.) standard.

C. Condenser Fans:

1. 4-blade, aluminum construction and shall be dynamically balanced and corrosion resistant.

2. Discharge air at a 45° vertical angle.

3. Motors and blades shall be protected by coated steel wire safety guards.

D. Fan Motors:

1. Condenser fan motors shall be single speed, direct drive.

2. Totally enclosed.

3. Permanently lubricated sleeve bearings and Class F insulation.

4. Internal overload protection.

E. Compressors:

1. Unit shall contain two fully hermetic scroll compressors.

2. Direct-drive, 3500 rpm (60Hz)

3. Compressor motor shall be suction gas cooled.

4. Internal motor protection.

5. Externally protected by low and high pressure cutout devices.

6. Individual vibration isolators .

F. Pump:

1. Unit shall be capable of incorporating a field installed chilled liquid solution pu mp. (Space restricted)

2. Unit shall have provisions to allow for chilled liquid solution piping to the exterior of the cabinet.

G. Evaporator:

1. Evaporator shall have two independent r ef rigerant circuits.

2. Rated for a refrigerant side working pressure of 450 psig and a maximum water side working

pressure of 60 psig.

3. Single pass, ANSI type 316 stainless steel, brazed plate construction.

4. Externally insulated with closed cell, elastomeric foam. (ASTM518)

H. Condenser:

1. Condenser coil shall be air-cooled with integral subcooler.

2. Two independent refrigerant circuits.

3. Constructed of rifled copper tubing mechanically bonded to aluminum fins.

4. Cleaned and dehydrated.

5. Factory leak tested to 450 psig.

I. Refrigerant Circuits:

1. Each circuit shall contain a sight glass, liquid line filter, thermal expansion valve, refrigerant charge of R407c and POE compressor oil.

Part 3-Controls and Safeties

3.01 Controls A. Chiller shall be completely factory wired and tested.

B. Capacity control shall be based on leaving chilled liquid solution temperature.

1. Temperature accuracy shall be + - 1.0°F.

2. Controls shall be capable of staging the two compressors. C. Controls shall include the following components.

1. 24vac transformer to serve all controllers relays and control components.

2. Microprocessor based liquid solution temperature controller.

3. Leaving water temperature thermistor.

4. Pump bypass timer.

5. Compressor recycle timer.

6. Optional fan cycling control for low ambient operation.

7. Chilled liquid solution flow switch.

3.02 Safeties A. Unit shall be equipped with thermistors and all necessary components in conjunction with the

control system to provide the following protectants.

1. Low refrigerant pressure.

2. High refrigerant pressure.

3. Low chilled liquid solution temperature.

4. Low chilled liquid solution flow.

5. Thermal overload.

6. Short cycling.

Part 4-Operating Characteristics:

4.01 Temperatures

A. Unit shall be capable of starting and running at outdoor temperatures from 55°F to 120°F.

B. Optional Low Ambient Kit shall allow starting and running at outdoor temperatures to -20

field supplied and installed crank case heater must be used when operating at these temperatures.

C. Unit shall be capable of starting up with a maximum 80°F and a sustained 70°F entering fluid

solution temperature to the evaporator.

D. Minimum 10% Glycol solution is required. For outdoor temperatures below 32°F, reference MAC Glycol Solution Data table.

4.02 Electrical Requirements

A. Primary electrical power supply shall enter the unit at a single location. B. Electrical power supply shall be rated to withstand 120°F operating ambient temperature. C. Units shall be available in 1 or 3-phase power at the voltages shown in the equipment electrical data. D. Control points shall be accessed through terminal block.

°F. A

MAC120 Product Specifications

Physical Data

Condenser Coil Chiller Weight (lbs)

Model

Number

Height

(in)

Length

(in)

MAC120-01 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700 MAC120-02 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700 MAC120-03 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700

Copper

Tubing

Diameter

(in)

Coil

Rows

Height

(in)

Electrical Data

Length

(in)

Width

(in)

Refrigerant

R407c

Net Shipping

Compressor

Model

Number

Volts/ Phase/ Hertz

(Qty 2)

(RLA) (LRA) (RLA) (RPM) MAC120-01 208/230-1-50/60 32.1 x 2 169 x 2 2.3 x 2 900 MAC120-02 208/230-3-50/60 19.3 x 2 137 x 2 2.3 x 2 900 MAC120-03 380/415/460-3-50/60 10 x 2 75 x 2 1.6 x 2 900

Condenser Fan

Motor

(Qty 2)

Fuse or HACR Circuit

44.73 x 2

Breaker

Minimum

Amps

“See note 1”

48.03

“See note 2”

25.70

“See note 2”

Maximum

Amps

75 x 2

“See note 1”

“See note 2”

Note:

1. MAC120-01 has two independent line voltage terminations.

2. MAC120-02 & MAC120-03 has one independent line voltage termination.

Copper Wire Size (1% Voltage Drop)

200 6 4 4 4 3 3 2 2 150 8 6 6 4 4 4 3 3 100 10 8 8 6 6 6 4 4

50 14 12 10 10 8 8 6 6

Supply Wire

15 20 25 30 35 40 45 50

Length in Feet

Supply Circuit Ampacity

Compressor Copeland Scroll

Refrigerant R407c

Heat Exchanger Brazed Plate

Max Flow Rate 28.8 gpm

Min Flow Rate 18 gpm Supply Water Temp 44° Return Water Temp 54°

Minimum System

Solution Content

50 Gallons

Expansion Tank Size 3% of Total System

Water Connections 1 3/8" OD Supply & Return

Internal Pressure Drop 18 ft of head

Multiaqua chillers are designed to operate exclusively with R407c refrigerant in a self-contain ed, pre-charged refrigerant system. Do not access the closed refrigerant circuit for any reason other than after-sale, after installation component replacement. Routine maintenance and service is to be performed by qualified personnel only.

These specifications are subject to change without notice.

MAC120 Product Specifications

MAC120 Capacity / Watts / EER*

TONS 9.4 9.0 8.8 8.7 8.7

KILOWATTS 10.9 11.5 11.5 12.1 12.4

EER 10.35 9.39 9.18 8.63 8.42

* Refrigerant system performance only, pump data not included.

82 95 100 105 110

MAC120 Glycol Solution Data

Propylene Glycol %

10% x 1.020 x 0.99 26°F x 1.01 20% x 1.028 x 0.98 18°F x 1.03 30% x 1.036 x 0.98 8°F x 1.07 40% x 1.048 x 0.97 -7°F x 1.11 50% x 1.057 x 0.96 -29°F x 1.16

Example: 30% glycol solution. Maximum Flow Rate = 12gpm x 1.036 System capacity x .98

*Use Propylene Glycol Only

Water

Flow

Capacity Min. Ambient Temp GPM Adjustment= 100% Capacity

Important

If the outside temperature is expected to fall below freezing (32°F) in the area the Multiaqua chiller is to be installed; the installer must take the following precautions. Failure to do so will void the warranty.

To not engage in cold ambient mitigation will result in the failure of components such as the heat exchanger, piping, circulating pump, etc… and or property damage.

• Keep the liquid solution at a minimum of 10% percent Propylene Glycol even in areas where there is no danger of freezing.

• The percentage amount of glycol recommended is dependent on the expected ambient temperatures and the solution makeup recommendation of the glycol manufacturer. Refer to the MAC120 Glycol Solution Data table above.

• Ensure the system circulating pump is in a constant energized mode to keep a continuous circulation of liquid solution.

The Multiaqua chiller is a self-contained air-cooled condenser, coupled with an insulated brazed plate heat exchanger (evaporator). The system utilizes a scroll compressor to circulate refrigerant between the condenser and heat exchanger. The refrigerant is metered into the heat exchanger with a thermal expansion valve. Protecting the system are high and low pressure switches as well as a pump flow switch. Liquid solution (water and Propylene Glycol; minimum 10 % is required) is circulated through the heat exchanger by an externally mounted pump. The liquid solution flows through the heat exchanger to the system supply piping and on to the air handlers. Low ambient kits are available for operating ambient temperatures down to -20 degrees Fahrenheit. A field supplied and installed crankcase heater must be installed when operating at these temperatures. The low ambient kits consist of an ICM 325 (+) ICM (175) for single and three phase 208/230 vac chillers. For the three phase 380/460 vac chillers a pressure activated fan control is used.

These specifications are subject to change without notice.

Outdoor Air °F

MAC120 Cooling Performance Data

MAC120 CAPACITIES with 0% Glycol

LWT (°F)

35 7.9 7.6 7.4 7.3 7.1 40 8.8 8.4 8.2 8.1 8.1 42 9.1 8.7 8.5 8.4 8.4 44 9.4 9.0 8.8 8.7 8.7 45 9.6 9.2 9.0 8.8 8.8 46 9.7 9.3 9.1 9.0 9.0 48 10.1 9.7 9.4 9.3 9.3 50 10.4 10.0 9.7 9.6 9.6 55 11.3 10.9 10.5 10.4 10.3 60 12.3 11.8 11.4 11.2 11.1

82 95 100 105 110

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

28.8 28.8 28.8

MAC120 CAPACITIES with 10% Glycol

LWT (°F)

35 7.8 7.5 7.3 7.2 7.0 40 8.7 8.3 8.1 8.0 8.0 42 9.0 8.6 8.4 8.3 8.3 44 9.3 8.9 8.7 8.6 8.6 45 8.5 9.1 8.9 8.7 8.7 46 9.6 9.2 9.0 8.9 8.9 48 10.0 9.6 9.3 9.2 9.2 50 10.3 9.9 9.6 9.5 9.5 55 11.2 10.7 10.4 10.3 10.2 60 12.1 11.6 11.2 11.0 10.9

82 95

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

28.8 28.8

ENTERING AIR TEMPERATURE (°F)

28.8

ENTERING AIR TEMPERATURE (°F)

100 105

28.8 28.8 28.8

28.8

110

MAC120 CAPACITIES with 20% Glycol

LWT (°F)

35 7.7 7.4 7.2 7.1 6.9 40 8.6 8.2 8.0 7.9 7.9 42 8.9 8.5 8.3 8.2 8.2 44 9.2 8.8 8.6 8.5 8.5 45 9.4 9.0 8.8 8.6 8.6 46 9.5 9.1 8.9 8.8 8.8 48 9.9 9.5 9.2 9.1 9.1 50 10.1 9.8 9.5 9.4 9.4 55 11.1 10.6 10.2 10.1 10.0 60 12.0 11.5 11.1 10.9 10.8

82 95 100 105 110

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

28.8 28.8 28.828.8

ENTERING AIR TEMPERATURE (°F)

These specifications are subject to change without notice.

28.8

MAC120 Cooling Performance Data

MAC120 CAPACITIES with 30% Glycol

LWT (°F)

35 7.7 7.4 7.2 7.1 6.9 40 8.5 8.1 8.0 7.9 7.9 42 8.8 8.4 8.2 8.1 8.1 44 9.1 8.7 8.5 8.4 8.4 45 9.3 8.9 8.7 8.5 8.5 46 9.4 9.0 8.8 8.7 8.7 48 9.8 9.4 9.1 9.0 9.0 50 10.1 9.7 9.4 9.3 9.3 55 11.0 10.6 10.2 10.1 10.0 60 11.9 11.5 11.1 10.9 10.8

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

MAC120 CAPACITIES with 40% Glycol

LWT (°F)

35 7.6 7.3 7.1 7.0 6.8 40 8.5 8.1 7.9 7.8 7.8 42 8.8 8.4 8.2 8.1 8.1 44 9.1 8.7 8.5 8.4 8.4 45 9.3 8.9 8.7 8.5 8.5 46 9.4 9.0 8.8 8.7 8.7 48 9.8 9.4 9.1 9.0 9.0 50 10.0 9.7 9.4 9.3 9.3 55 10.9 10.5 10.1 10.0 9.9 60 11.9 11.4 11.0 10.8 10.7

82 95 100 105 110

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

28.8 28.8 28.8

ENTERING AIR TEMPERATURE (°F)

95 100 105 110

28.8 28.828.8 28.8 28.8

ENTERING AIR TEMPERATURE (°F)

28.8 28.8

MAC120 CAPACITIES with 50% Glycol

LWT (°F)

35 7.5 7.3 7.1 7.0 6.8 40 8.4 8.0 7.8 7.7 7.7 42 8.7 8.3 8.1 8.0 8.0 44 9.0 8.6 8.4 8.3 8.3 45 9.2 8.8 8.6 8.4 8.4 46 9.3 8.9 8.7 8.6 8.6 48 9.7 9.3 9.0 8.9 8.9 50 9.9 9.6 9.3 9.2 9.2 55 10.8 10.4 10.0 9.9 9.8 60 11.8 11.3 10.9 10.7 10.6

82 95 100 105 110

TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM

These specifications are subject to change without notice.

ENTERING AIR TEMPERATURE (°F)

28.8 28.828.8 28.8 28.8

Table of Contents

Page

Introduction 19 System Description & Sequence of Operation 20 Electrical & Physical Data 21 Description of Electrical Controls 23 Chiller Controls Sequence of Operation 25 Refrigeration System Operation 26 Description of Refrigeration Components 26 Piping System Components 28 Layout & Design 29 Banked Chiller Configuration 30 Installation Notes 31 Propylene Glycol Content 32 Expansion Tank 32 Filling the System with Propylene Glycol 33 Air Elimination 33

Multiaqua Chiller Manual

The Multiaqua Chiller System is the only air conditioning/refrigeration system of its kind in the world today offering the degree application flexibility described in the following manual.

The Multiaqua Chiller System is not only unique in its application flexibility; it is unique in superior quality, rated capacities and rugged durability. When installed in accordance with these instructions the system will deliver years of trouble free service.

Proper equipment sizing, piping design and installation are critical to the performance of the chiller. This manual is meant to be a “how to” introduction to piping and installing the Multiaqua Chiller System.

MAC120 Chiller Features

• Copeland Scroll Compressors

• Advanced Motor Protection

• Loss of Flow Protection

• Control Power Transformer

• Low Ambient Option

• Integrated Chilled Solution Pump Control

• Flow Switch

• Strainer Connection Kit

• Painted Metal Condenser Protector Grille

• Dual Refrigeration Circuits and Single Liquid Solution Circuit

RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY OR

INSTRUCTION RELATED INFORMATION.

Web site information addresses are supplied throughout this manual for piping and accessory information. The plumbing industry also has pressure drop information on ferrous and copper piping systems.

The following sections will describe each component and how it functions within the system. Installation information is supplied where appropriate. The piping design section will explain the design and layout the piping system from a “how to” perspective. Following the examples provided will enable the installer to determine the correct pipe and accessory sizing, as well as equipment location. It is important to know before installation if the proposed system will operate correctly and by doing a formal layout of a new application or review of an existing piping system will make that determination.

Throughout this manual the term “liquid solution” is used in place of water. The chiller circulates a solution of water and Propylene Glycol.

It is essential to operate the system with a minimum of 10% glycol. DO NOT OPERATE THIS

SYSTEM USING WATER ALONE.

For proper liquid solutions mix ratios, refer to page 14 or the glycol manufacture’s recommended mix ratios.

System Description & Sequence of Operation

The Multiaqua Chiller is a self-contained, air-cooled condenser, coupled with an insulated brazed plate heat exchanger (evaporator). The system utilizes scroll comp ressors to circulate refrigerant between the condenser and heat exchanger. The refrigerant is metered into the heat exchanger with a thermostatic expansion valve. Protecting the system are high and low pressure switches as well as a pump flow switch.

Liquid solution (water and Propylene Glycol is circulated through the heat exchanger by a field supplied pump. The liquid solution flows through the heat exchanger to the system supply piping and on to the air handlers.

A solenoid-operated, motorized valve or circulator controls the flow of the chilled liquid solution through the air handlers. The valves or circulators can be actuated by a variety of different control schemes.

Liquid solution temperature is controlled by a chiller mounted digital electronic controls. A system sequence of operation, individual control description, troubleshooting information and a schematic are included in the controls section.

It must be recognized that ferrous pipe may cause acceleration deterioration of the brazed

plate heat exchanger and could void the heat exchanger warranty.

Cooling load Diversity

Equipment sizing for a chilled liquid solution system can utilize Cooling Load Diversity. Diversity is described as the actual amount of cooling needed (heat load) by various sections of a structure at a given time. Conventional air conditioning systems are designed for the highest structure heat load. The conventional system determines and selects equipment based on the peak heat load demanded by the structure. A system sized to take advantage of diversity would determine the heat load by the time of day, building exposure and usage. As an example the sections of a structure facing west, demand more cooling in the afternoon, than sections facing east. The opposite of this is true in the morning, where the east section is exposed to a higher heat load requiring more cooling. Utilizing diversity the chiller system would adapt to the needs of each side of the structure during peak demand by delivering more cooling to that area and less to the areas that do not need it. A structure utilizing a conventional DX system, requires 8 tons of cooling at peak load, could utilize a much smaller capacity system (potentially 4 or 5 tons) if the system installed could take advantage of load diversity, which would supply the necessary amount of cooling to the space, as and when needed instead of keeping a larger capacity available at all times.

Cooling load diversity can best be determined by referring to ACCA. (Air Conditioning Contractors of America) Manual “J”, Refer to the appendix A-2, Multi-Zone Systems. ACCA’s Internet address is

http://www.acca.org/

Because of diversity a Multiaqua Chiller can serve more total air handler tonnage than chiller capacity. A 10-ton chiller may be delivering chilled liquid solution to 15 or more tons of air handler capacity. Because of cooling load diversity, the building does not need equal amounts of cooling in each area at the same time.

ELECTRICAL AND PHYSICAL DATA

The information contained in this manual has been prepared to assist in the proper installation, operation and maintenance of the chiller. Improper installation, or installation not made in accordance with these instructions can result in unsatisfactory operation and/or dangerous conditions and can cause the related warranty not to apply. Read this manual and any instructions packaged with separate equipment required to make up the system prior to installation. Retain this manual for future reference.

Separate and independent power supplies and disconnects must be provided. These chillers have

separate and discreet power requirements within one cabinet.

All power to the chiller must be turned off prior to opening cabinet and or servicing.

Failure to properly ground chiller can result in death.

Disconnect all power wiring to chiller before maintenance or service work. Failure to do so can

cause electrical shock resulting in personal injury or death.

All wiring must be done in accordance with the NEC (National Electric Code) as well as state and

local codes, by qualified electricians.

Product warranty does not cover any damages or defect to the chiller caused by the attachment or use of any components, accessories or devices (other than those authorized by the manufacturer) into, onto or in conjunction with the chiller. You should be aware that the use of unauthorized components, accessories or devices may adversely affect the operation of the chiller and may also endanger life and property. The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized components, accessories or devices.

Upon receiving the chiller and components, inspect for any shipping damage. Claims for damage, either apparent or concealed should be filed immediately with the shipping company.

No liquid other than the solution of water and Propylene Glycol (mixed in accordance with table 6 page 32) shall be used in the piping system.

Corrosive environments may subject metal parts of the chiller to rust and deteriorate. The oxidation could shorten the chiller’s useful life. Corrosive elements include salt spray, fog or mist in sea coastal areas, sulfur or chlorine from lawn watering systems and various chemical contaminants from industries such as paper mills and petroleum refineries. If the unit is to be installed in an area where contaminates are likely to be a problem, special attention should be given to the equipment location and exposure.

• Avoid having lawn sprinklers spray directly on the chiller cabinet.

• In coastal areas, locate the chiller on the side of the building away from the water front.

• Elevating the chiller off of its slab or base enough to allow air circulation will help avoid holding water in contact with the cabinet base.

• Regular maintenance will reduce the build-up of contaminants and help protect the cabinet finish.

• In severe locations having the chiller coated with an “epoxy” or other coating formulated for air conditioning systems located in coastal areas may be necessary.

Consult local building codes or ordinances for special installation requirements. When selecting a site to locate the chiller, consider the following:

• A minimum clearance of 60” on the service access front, 12” on the rear air inlet and a 60” fan discharge clearance.

• The chiller can be located out or indoors. If installed indoors there must be 9000 cfm of outdoor air changes circulated through the mechanical room to sufficiently operate the chiller. No ductwork can be connected to the chiller’s condenser or condenser fans.

• If a concrete slab is used, do not connect the slab directly to any building’s foundation or structure to prevent sound transmission.

• Locate the slab on a level surface that is above grade to prevent ground water from entering the chiller cabinet.

Stated Service Clearances

60” Fan Discharge Clearance

60” Front Service Clearance

Chiller Supply and Return Piping Access

58.25

58.25”

60.00”

12” Rear Clearance

0” Side Clearance

60.00”

15”

10”

13”

”

25.25”

Description of Electrical Controls

Control Transformer: The control transformer is rated at 24 vac, 40 va (1.6 amps @ 24vac)

Pump Bypass Timer: The pump bypass timer is a 24 vac, 3-wire control.

When energized the timer will bypass the flow switch for 10 seconds (by creating a circuit to the pump relay), energizing the pump relay, allowing the pump to operate long enough to close the flow switch. In a normally operating system the flow switch will stay closed powering the pump relay in series with the low and high- pressure switches. Should the flow switch open, the timer can only be reset by opening and closing the chiller's line voltage disconnect.

Refrigerant System Timer:

on break, 20wire timer. The normally closed contacts of the timer energize the compressor contactor through the chilled solution control. When the chilled solution control contacts open, the timer delays by opening its contact for 5minutes before resetting to the closed position.

High Pressure Switch: The high-pressure switch is an automatic reset control

that senses compressor discharge line pressure. It opens at 400 PSIG and closes at 300 PSIG.

The refrigerant timer is a 24 vac, 5-minute delay

Description of Electrical Controls (continued)

Low Pressure Switch:

that senses compressor suction line pressure. It opens at 40 PSIG and closes at 80 PSIG.

Flow Switch:

switch is inserted through a fitting into the pump discharge line. Liquid solution flow deflects the paddle closing the switch. The flow switch is position sensitive. The arrow ↑ on the switch must point in the direction of liquid solution flow.

The flow switch senses liquid solution flow. The paddle of the

The low-pressure switch is an automatic reset control

Compressor Contactor:

through the two or three normally open contacts. The contactor coil operates (closes the contacts) when energized by 24 vac.

Liquid Solution Temperature Control:

is an adjustable microprocessor based temperature control. This control receives temperature information from a thermistor located on the liquid solution supply line. A liquid crystal display continually indicates liquid solution temperature. The control is mounted inside the chiller cabinet.

The compressor contactor energizes the compressor

The liquid solution temperature control

Chiller Controls Sequence of Operation

When powered up, the Multiaqua chiller system energizes the control transformer creating 24 vac control voltage.

First the pump bypass timer is energized and temporarily bypasses the flow switch, energizing the pump relay. The pump then starts to move liquid solution through the piping system (in a properly filled and air purged system). The movement of liquid solution from the pump discharge keeps the flow switch closed. After a 10 second delay the pump contact opens, connecting the flow switch in series with the high and low pressure switches. The pump will now run continually unless the power supply is interrupted, or the flow switch opens.

If the liquid solution temperature controller is calling for cooling the control circuit is routed through the short cycle timer and the three safety switches (the flow, high and low pressure switches) to the compressor contactor. This will energize the compressor(s) and condenser fan motors. The liquid solution controller will open at the user programmed set point, causing the refrigerant short cycle timer to open it's contact for 5 minutes as it delays before resetting to the closed position. This will de-energize the compressor. Power fluctuations will also initiate a 5 minute time delay. The 5 minute delay allows the refrigerant system a period for pressure equalization, protecting the compressor(s) from short cycling.

The chiller temperature controller utilizes a thermistor to monitor the liquid solution temperature change. The temperature is then compared to the set point and differential temperatures programmed into the control by the user. The set point is the liquid solution temperature which will cause the control switch to open. For example: The control set point is programmed at 44°F LWT with a 10°F differential, which opens the controller at 44°F LWT and closes at 54°F. The differential temperature is the number of degrees above set point temperature programmed into the controller. If liquid solution temperature falls to the set point, the controller cycles the compressors off.

Chillers are shipped with the control set point adjusted to 44°F LWT and a 10°F differential. Liquid solution temperature set point should not be set below 35°F.

+ 258 hidden pages

Multiaqua MAC120-02-N-R407, MHCCW04-00-03, MHCCW04-02-03, MHCCW04-00, MHCCW04-03 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual