HH-Q
High Performance Horizontal Bottom Return Plenum
The High Performance Horizontal Bottom Return Air Plenum (HH-Q) is a high static (up to .50 ESP) fan coil that comes with a coil, blower/motor assembly with quick connect plug and a galvanized steel, powder coated epoxy drain pan covered with 1/8" thick insulation. The galvanized steel plenum is insulated with 1/2" thick, over three pound density, neoprene coated fiberglass. The plenum conceals the fan and motor assembly that is easily accessed for service by removing the back panel. This unit is easily mounted above ceilings, in closets, and in hallways.
Up to 0.50 ESP
Static Pressure
300 PSIG
Max Working Pressure
200°F
Max Water Temp
Concealed installation
Application
Project Documents
Downloads
Technical Details
Features & Specifications
Chassis
All unit chassis shall be fabricated of heavy gauge galvanized steel panels able to meet 125 hour salt spray test per ASTM B-117. All exterior panels shall be insulated with 1/2" thick, 3.35 pound per cubic foot, dual density fiberglass insulation rated for a maximum air velocity of 3600 f.p.m. Insulation shall conform to UL 181 for erosion and NFPA 90A and 90B for flame spread (25) and smoke developed (50) rating per ASTM E-84 and UL 723. All plenum units shall have a minimum 1" duct collar on the discharge and a minimum 1" duct collar on the return.
Available Options
- Foil faced insulation meeting ASTM Standards C665 and C-1136 for biological growth
- Elastomeric closed cell foam insulation with antimicrobial performance rating of zero per ASTM G21
- Quick open fasteners on bottom access panels for easy removal and service access
- Double deflection discharge grille and rear/bottom return single deflection grille for exposed units
Fan & Motor
Unit fan shall be a dynamically balanced, forwardly curved, DWDI centrifugal type constructed of heavy gauge zinc coated galvanized steel for corrosion resistance. Motors shall be high efficiency, permanently lubricated sleeve bearing, permanent split capacitor type with UL and C-UL listed automatic reset thermal overload protection and three separate horsepower taps. Single speed motors are not acceptable. The fan assembly shall be easily removable for servicing the motor and blower at or away from the unit. Plenum unit fan assemblies shall be easily serviced through an access panel provided.
Available Options
- Totally silent devices for energizing and de-energizing fan speeds
Coil
All cooling and heating coils shall optimize rows and fins per inch to meet the specified capacity. Coils shall have seamless copper tubes and shall be mechanically expanded to provide an efficient, permanent bond between the tube and fin. Fins shall have high efficiency aluminum surface optimized for heat transfer, air pressure drop and carryover. All coils shall be hydrostatically tested at 350 PSIG air pressure under water, and rated for a maximum of 300 PSIG working pressure at 200°F maximum water temperature.
Available Options
- Coil casing fabricated from 304 stainless steel
- Manual air vent fitting for coil venting
- Automatic air vents in lieu of manual air vents
Electric Heat
Furnish an electric resistance heating assembly as an integral part of the fan coil unit, with the heating capacity, voltage and kilowatts scheduled. The heater assembly shall be designed and rated for installation on the fan coil unit without the use of duct extensions or transitions. The heater and unit assembly shall be listed for zero clearance and meet all NEC requirements, and be UL listed with the unit as an assembly in compliance with UL/ANSI Standard 1995. All heating elements shall be open coil type Nichrome wire mounted in ceramic insulators.
Available Options
- Totally silent devices for energizing and de-energizing electric heat
Filter
All plenum units shall be furnished with a minimum 1" nominal glass fiber throwaway filter. Filters shall be tight fitting to prevent air bypass. Plenum unit filters shall be easily removable from the bottom or rear of the unit without the need for tools.
Available Options
- 2" pleated filters rated at 25-30% efficiency and MERV 6 based on ASHRAE 52.2
- Factory mounted terminal wiring strip with multiple position screw terminal block
Piping Package
Provide a factory assembled valve piping package to consist of a 2 or 3 way, on/off, motorized electric control valve and two ball isolation valves. Control valves are piped normally closed to the coil. Maximum entering water temperature on the control valve is 180°F, and maximum close-off pressure is 75 PSIG (1/2") or 50 PSIG (3/4"). Maximum operating pressure shall be 300 PSIG.
Available Options
- 3 wire floating point modulating control valve
- Fixed or adjustable flow control device
- Pressure temperature ports for each piping package
Drain Pan
Condensate drain pans shall be single wall, heavy gauge, powder-coated epoxy subjected to a 650 hour salt spray test in accordance with ASTM B117, and shall extend under the entire cooling coil. Drain pans shall be of one piece construction and be positively sloped for condensate removal. Drain pans shall have primary and secondary drain connections.
Available Options
- Single wall primary drain pan constructed of heavy gauge type 304 stainless steel
- Condensate overflow switch in the primary drain pan
WARNING: This product can expose you to chemicals including epichlorohydrin which is known to the State of California to cause cancer and birth defects and/or other reproductive harm. For more information go to p65warnings.ca.gov
HH Series
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