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Fresh Air Makeup Air Handler

PRODUCT DESCRIPTION
The Fresh Air Makeup Air Handler is a sophisticated chilled water air handler that "conditions" fresh air as it is continuously introduced into the yacht. It is designed to remove moisture, salt and a range of other airborne particulates that could in time erode the integrity and quality of the onboard environment. Removal of the particulate matter results in a cleaner overall environment aboard the vessel. The system removes odor by positively displacing contaminated air with fresh, clean air.

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FEATURES ---------------
Durable Modular Design
  • Welded aluminum frame construction provides superior strength vs. weight.
  • Entire housing is insulated for thermal efficiency and noise reduction
  • Removable panels incorporate quick release stainless steel latches for ease of access.
  • Split filter sections provide easy removal for cleaning and/or replacing.
  • Multiple filter selections are available (electro-static, carbon filter, etc.)
  • Left hand or right hand assembly
  • Low profile, compact design broadens versatility in installation.
  • All components are field-replaceable.
Blower Assembly Module
  • Dual inlet squirrel cage fan design.
  • Dual belt-driven assembly with built-in belt tensioner.
  • All internal components are vibration isolated for quiet operation and longevity.
Fan Coil Assembly Module
  • Enclosed and insulated drain pan incorporates four threaded drain connections for complete condensate removal.
  • Air bleeder valve on unit assists in removal of air from chilled water line during start-up.
  • Demister section for water removal is integrated into design to ensure maximum moisture "drop-out".
Control
  • Two speed motor provides maximum cooling during daytime hours and minimizes noise levels for evening operation and for light load requirements.
  • "SCR" fired electric heaters pulse to provide a consistent supply air temperature.
Quality Assurance
  • All components are coated with a corrosion resistant material for long life.
  • All units meet or exceed applicable ABYC and U.S. Coast Guard regulations, CE Directives and general Air Conditioning and Refrigeration Industry (ARI) standards.

SPECIFICATIONS
Model
HFA30K-Z1 RH/LH
HFA30K-Z3 RH/LH
Single Phase
Three Phase
Capacity (BTU/H)/(Kcal/H)
30,000/7,560
30,000/7,560
Voltage/Cycle/Phase
208-230/60/1
208-230/60/3
Max.Circuit Breaker
30.0
15.0
Min. Circuit Ampacity
28.6
14.6
Motor Speed
High/Low
High/Low
Horsepower (HP)
0.5/0.13
0.5/0.13
Revolutions/Minute (RPM)
1,725/850
1,725/850
Amperage (FLA)
4.1/2.0
1.4/0.8
Heater 4.5 KW (FLA)
20.0
11.3
Airflow (CFM)
300/150
300/150
Airflow (M3HR)
500/250
500/250
Dimensions (in/cm)
A (Length)
49.5/125.7
49.5/125.7
B (Width)
422.5/57.2
422.5/57.2
C (Height)
20.0/50.8
20.0/50.8
D (Return Air)
15.0/38.1
15.0/38.1
E (Return Air)
16.0/40.6
16.0/40.6
F (Chilled Water)
0.75" FPT
0.75" FPT
G (Condensate Drain)
1.0" FPT
1.0" FPT
H (Supply Air)
9.00/22.9
9.00/22.9
J (Supply Air)
8.00/220.0
8.00/220.0
Net Weight (lbs/kg)
185/84
185/84
*Model designation "RH" is for right side access. "LH" is for left side access, facing the fresh air inlet
**50 Hz operation will reduce motor RPM bu 17% to 18
***Nominal rating by design. 50 Hz operation will reduce CFM by 17
****Four drain connections per un
Installation Guidelines for Fresh Air Makeup Air Handler

When choosing the proper model Fresh Air Makeup Air Handler, primary consideration should be given to calculated BTU loads and available power supply.

HFA series units are insulated and ductable designed to be installed in engine rooms or forward/aft areas, where outside air can be made available to the unit. The fresh air can be delivered to the unit through demisters and filtration, or ducted directly to the unit. Fresh air supply is delivered through a central ducting system to cabin areas or to individual air handlers throughout the vessel.

Securely fasten the fresh air unit to a solid, level surface, using the two (2) mounting rails provided on the housing. Ductwork to the inlet of ht unit should not be smaller than the surface area of the inlet opening on the unit. Main ducting should be reduced as branch lines are extended to individual areas to assist in proper air balancing of each cabin or area. Balancing dampers can be installed at the end of each individual branch to allow for proper air balancing. All ductwork should be securely fastened to prevent movement while the vessel is under operation. Condensation drain lines must be connected to the unit's four (4)

drain fittings (1"FPT). The drains may be teed together, providing there is a minimum drop of 2" from the drain pan to the tee fitting(s). A P-trap fitting should be installed to provide a siphon-break for proper drainage, and a means to prohibit the intrusion of fumes or odors into the fresh air system. The drain lines should be properly secured to prevent movement or lifting during vessel operation. NOTE: Condensation drain lines may need to be insulated when located in high heat load areas to prevent line sweating, which could cause water damage.

Water connections from the circulation circuit to the fresh air unit are to be reinforced flexible hose. All hose, pipe and connections must be insulated properly to prevent condensation. Use approved closed cell tube insulation (1/2" minimum) or an equivalent insulation tape.

All wiring must be sized according to marine design standards. Only stranded, tinned copper wire is to be used. All electrical connections to the fresh air unit are to be made within the electrical connections to the fresh air unit are to be made within the electrical junction boxes provided on the assembly. All units must be properly ground

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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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