Dehumidification >> How To Dehumidify A Bathroom Without Losing Heat

Fans shall be Class II (minimum) construction with single inlet, aluminum wheel and stamped air-foil aluminum blades. The fan wheel shall be mounted on the directly-driven motor shaft in AMCA Arrangement 4. G. Filter Section: Pleated, How To Dehumidify A Bathroom Without Losing Heat disposable pre-filters in outdoor-air inlets supply-air return-air mixing plenums. 

Filters shall be 50 mm (2 inches) thick, installed in filter rack, 30 percent minimum efficiency with a minimum efficiency report value (MERV) of 7 according to ASHRAE 52.2 and 90 percent average arrestance: How To Dehumidify A Bathroom Without Losing Heat according to ASHRAE 52.1 conforming to ASHRAE Test Standard 52.1. H. 

Reactivation Heating Coil and Supplementary Heating Coil: 1 Direct-fired, How To Dehumidify A Bathroom Without Losing Heat natural propane gas hot water steam electric-resistance reactivation 13.5pt; heating coil and heating coil to supply supplemental heating to the space during winter. Refer to specification Section 238216, AIR COILS for requirements.

Water Coils: Factory tested to 300 psig (2070 kPa) according to ARI 410 and ASHRAE 33. b. Steam Coils: Factory tested to 300 psig (2070 kPa) and to 200 psig (1380 kPa) underwater according to AHRI410 and How To Dehumidify A Bathroom Without Losing Heat ASHRAE33. 2. System shall include pumps and heat exchanger, expansion tank and copper piping for ethylene glycol and water mixture with a freezing point of -28 degrees C (-20 degrees F) and inhibitors for hot water heating coils. 

Retrofit projects may utilize existing AHU. I. Post Cooling Coil Section: Comply with requirements in Section 238216, AIR COILS. J. Evaporative Cooler: Factory-assembled How To Dehumidify A Bathroom Without Losing Heat and wired unit with intake grilles, bituminous-coated sump, and individually removable, aspen wood fiber pads with anti-rot salts 150-mm 6-inch glass-fiber pads with UL 900 (Class II) saturants 300-mm 12-inch glass-fiber pads with UL 900 (Class II) saturants. 

Water Circulation system: Sump pump with strainer, water distribution troughs at top of cooler pads, How To Dehumidify A Bathroom Without Losing Heat float-operated makeup valve, and drain connections. 2.Automatic Drain System: Two-way normal open drain valve, three-way, float-operated makeup water valve, and ambient thermostat. 3. Comply with applicable requirements in ASHRAE 62.1-2007. K. Boiler: Low-pressure, gas-fired boiler. 

The fuel consumption shall be controlled to meet dehumidification load by maintenance of fluid temperature. L. Refrigeration Package: Comply with ASHRAE15, "Safety Code for Mechanical Refrigeration." 1. Energy Efficiency: Equal to How To Dehumidify A Bathroom Without Losing Heat or greater than prescribed by ASHRAE/IESNA90.1-2010, "Energy Standard for Buildings except Low-Rise Residential Buildings." 

2. Refrigerant Coils: Copper tubes with mechanically bonded aluminum fins; factory fabricated and tested according to ASHRAE33 and AHRI410; with multiple refrigerant circuits, seamless-copper headers with brazed connections, How To Dehumidify A Bathroom Without Losing Heat and galvanized-steel stainless-steel frame. Coil and fins shall have a polyester coating. 

Coils shall have a minimum 300-psig (2070-kPa) working-pressure rating and be factory tested to 450 psig (3105 kPa), and to 300 psig (2070 kPa) while underwater. 3. Compressors: Semi-hermetic Hermetic, rotary scroll compressors with integral vibration isolators and crankcase heaters that de-energize during compressor operation; How To Dehumidify A Bathroom Without Losing Heat with thermal-expansion valves, filter-dryers, sight glasses, compressor service valves, and liquid- and suction-line service valves. 

4.Number of Refrigerant Circuits: Two for compressor capacities more than 7-1/2 tons. 5. Refrigerant: R-134a R-407C R-410A. 6. Capacity Control: Cylinder unloaders with steps as scheduled for reciprocating compressors Hot-gas bypass valve How To Dehumidify A Bathroom Without Losing Heat and piping on one compressor Cycle compressor. M. Safety Devices: Low-Pressure Cutout: Manual reset after three auto-reset failures. 

2. High-Pressure Cutout: Manual reset. 3. Compressor Motor Overload Protection: Manual reset. 4. Antirecycling Timing Device: Prevent compressor restart for five minutes after shutdown. 5. Adjustable, Low-Ambient, Head-Pressure Control: Designed to operate at temperatures as low as 0 degF (minus 18 degC) by cycling condenser fans How To Dehumidify A Bathroom Without Losing Heat and controlling speed of last fan of each circuit. 

6.Oil-Pressure Switch: Designed to shut down compressors on low oil pressure. N. Condenser Fans: Propeller-type fans directly driven by motors with permanently lubricated bearings How To Dehumidify A Bathroom Without Losing Heat and internal thermal-overload protection. O. Drain Pan and Connection: Plastic Stainless steel; insulated and complying with ASHRAE62.1-2007. 

P. Outdoor-Air Intake Dampers: Return- and How To Dehumidify A Bathroom Without Losing Heat outdoor-air intake dampers with damper operator and control package. 1. Leakage: Maximum leakage 2.5 1.0 percent at nominal airflow of 54 L/s per kW (400 cfm per ton) (with 250 Pa (1-inch wg) pressure differential. 2. Damper Operator: 120 24-V ac, close coupled, with spring return. 

Q.Remote-control panel shall contain controls and indicator lights consisting of the following: 1. On-off fan switch. 2. Minimum outdoor-air damper potentiometer position LCD. 3. Supply-fan operating indicator light. 4. Mechanical cooling malfunction indicator light. 5. Clogged filter indicator light. R. Electrical Convenience Outlet: 120-V ac fused, How To Dehumidify A Bathroom Without Losing Heat duplex straight-blade receptacles separately fused and located inside dehumidification unit casing. 

INSTALLATION A. Follow equipment manufacture"s written instructions for handling How To Dehumidify A Bathroom Without Losing Heat and installation of equipment. B. Adjust seals and purge of rotating wheels as recommended by the manufacturer. C. Verify correct settings and installation of controls.SPEC WRITE NOTE: Coordinate Seismic restraint requirements with specification Section 130541, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS. 

D. Install seismic restraints for How To Dehumidify A Bathroom Without Losing Heat equipment in seismic areas as required under specification Section 130541, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS. E. Install vibration-control devices. 1. Units with Internally Isolated Fans: Secure units to anchor bolts installed in concrete bases. 

Retain minimum static deflection of 6.35 mm or insert other value in How To Dehumidify A Bathroom Without Losing Heat paragraph below. 2.Floor-Mounted Units: Support on concrete bases using neoprene pads having a minimum static deflection of 6.35 mm (0.25 inch)__________. Secure units to anchor bolts installed in concrete bases. 3. Suspended Units: Suspend units from structural-steel support frame using threaded steel rods and spring hangers. 

Retain paragraph below if curbs are furnished with dehumidification units for rooftop installations; delete if units are installed on field-fabricated curbs or pilings. Curb Support: Install roof curb on roof structure, level How To Dehumidify A Bathroom Without Losing Heat and secure, according to the National Roofing Contractors Association's "Low-Slope Membrane Roofing Construction Details Manual," Illustration "Raised Curb Detail for Rooftop Air Handling Units and Ducts." Install and secure dehumidification units.

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