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Modular Chiller

FEATURES ---------------
Innovative Modular Design
  • Compact base design and footprint allows flexibility in space usage and layouts.
  • Lightweight aluminum construction provides corrosion-resistant durability and enhances ease of installation.
  • Individual modules can be multiplexed to provide precise capacity requirements for any application.
  • Factory assembled vertical and horizontal configurations are available with frames, manifolds and controls.
  • Remote-mountable electrical box allows easy access for adjustments or service.
High Efficiency Components
  • Matched components provide full rated capacity and assure maximum performance.
  • Bi-flow expansion valves balance systems between heat and cool modes.
  • Compact stainless steel brazed plate heat exchangers are designed for maximum efficiency using minimum space.
  • Condenser coil design reduces water velocity and is constructed of spiral fluted cupronickel to provide maximum heat transfer and high corrosion resistance.
  • Control circuits monitor and protect the system through the use of aqua stats, pressure switches, timers, freeze controls and high limit switches.
Quality Assurance
  • Each unit is pre-charged, load tested and calibrated at the factory.
  • Charge Guard protection provides sealed access ports, ensuring environmental protection and system integrity.
  • All units meet or exceed applicable ABYC and U.S. Coast Guard regulations, CE Directives and general Air Conditioning and Refrigeration Industry (ARI) standards.
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SPECIFICATIONS
Model MCW16T-RC MCW16T-RC MCW24I-RC MCW36I-RC MCW48I-RC MCW60I-RC MCW72S-RC
Capacity (BTU/H) **
Cool 16,000 16,000 24,000 36,000 48,000 60,000 72,000
Reverse Cycle 17,600 17,600 26,400 39,600 52,800 66,000 79,200
Refrigerant ............................ ......................... ....................... R-22 ..................... ........................ .......................
Charge (oz/g) 16/450 16/1450 20/510 20/567 30/624 34/680 36/1020
Oil ............................ ............................ ............................ Mineral Oil (150 Viscosity) ............................ ............................ ............................
Charge (fl.oz/litre) 35/1.0 35/1.0 35/1.0 35/1.0 65/1.9 65/1.9 60/1.8
Electrical Data
Voltage (VAC) *** 115V/60Hz/1 230V/60Hz/1 230V/60Hz/1 230V/60Hz/1 230V/60Hz/1 230V/60Hz/1 230V/60Hz/3
FLA 14.0 7.0 7.3 11.1 12.6 18.4 20.7
LRA 75.0 36.0 60 94 105 147 156
KVA (Kilo-Volt-Amps) 1.6 1.6 1.7 2.6 2.9 4.2 4.8
Max. Circuit Breaker 45 30 40 30 30 40 50
Min. Circuit Ampacity 27 18 9.1 13.9 17.1 24.0 26.0
Dimensions (in/cm)
Depth**** 19.0/48.3 19.0/48.3 24.0/61 24.0/61 24.0/61 24.0/61 24.0/61
Width**** 11.0/27.9 11.0/27.9 12.0/30.5 12.0/30.5 12.0/30.5 12.0/30.5 12.0/30.5
Height ***** 21.5/54.6 21.5/54.6 20.25/51.4 20.25/51.4 25.25/64.1 25.25/64.1 22.5/57.2
Net Weight (lbs/kg) 75/34.0 75/34.0 129/58.6 138/62.7 175/79.5 197/89.5 180/81.8
* T = Tecumseh compressor, I = Inertia compressor, S = Scroll compressor. High efficiency scroll compressors are available in each size unit.
** Cooling and heating capacities are given at performance ratings of 100F (38C) condensing temperature and 35F (2C) evaporating temperature.
*** High voltage (460/380) and three phase specifications are available upon request.
**** Add 1.0/2.5cm for each mounting bracket. The two brackets supplied can be mounted on any side of base pan.
***** Electrical box may be remotely mounted (except for MCW16). If mounted on unit, add 2.5/6.4 cm to height dimension.

Note:
1. Standard models operate at 60 Hz and 50 Hz. However, there is a 17% reduction in capacity when operating at 50 Hz. (Full capacity 50 Hz only units are available upon request.)
2. Low voltage (24VAC) control circuits are available for multiple-staged systems.

Installation Guidelines for Modular Chiller
When choosing the proper model MCW Modular Chiller condensing unit, primary consideration should be given to calculated BTU loads and available power supply. Any special requirements (capacity modifications, voltages, cycles, auxiliary heat, etc.) should be determined prior to installation.

The location of the MCW Modular Chiller condensing unit should be dry and accessible for service. Secure the condensing unit to a level horizontal surface with the supplied brackets. These brackets are designed to hold the weight of the equipment as well as handle any torsional movement. If a Marine Air Systems frame base is supplied and the chillers are already mounted, secure by drilling through the frame base at convenient locations. Do not stack units directly on top of each other. Each condensing unit must be independently supported.

Reinforced marine grade hose is to be used for the sea water circuit. The hose is to be routed upwards from the thru-hull intake to the condensing unit to prevent air locks in the centrifugal sea water pump. Circulation connections between the condensing unit and chilled water lines are to be made with properly sized fittings and reinforced marine grade hose. All hose connections are to be double clamped. Ball valves should be installed at chilled water inlet/outlet of each MCW unit and each air handler for overall serviceability of system. Insulate all hose and fittings properly upon completion of leak tests to prevent condensation and energy or capacity loss.

The chassis has an integral condensation drain pan for removal of any water that may form. Secure a hose to this drain pan spud and route it downward to a proper sump or overboard discharge outlet.

All circuit breakers and wire gauge must be sized according to marine design standards. Only stranded tinned copper wire should be used. Route all wiring through the strain-relief connectors provided in the electrical boxes.

All equipment should be properly grounded using the grounding lug provided on each units chassis. Electrical boxes are pre-wired for power and control circuits. Mechanical control panels can be remote mounted in a convenient location, using the four mounting screws provided. Field wiring is required between remote switch and unit electrical box.

All chilled water condensing units use closed-refrigerant circuits, pre-charged with R-22. No additional refrigerant is required during the installation or at initial start-up and operation of the system. Refer to other individual component sheets for specifications and details of air handlers, controls and related parts.

In keeping with regulations set forth by the EPA, only certified technicians should perform service on, or make adjustments to, any refrigerant circuit.


In the interest of product improvement, Marine Air Systems' specifications and design as outlined herein are subject to change without prior notice.



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