Model SHH is the new 91% efficient separated-combustion addition to the Reznor brand line of Pre-Engineered Air-Handlers. The 1st ever separated combustion system in the commercial/industrial
heating industry was introduced on a Reznor heater in the 1960s, and that proven technology is continued in this new high efficiency separated combustion product.

Reznor's SHH is available in 4 sizes (130/180/260/350 MBH) Each size is designed for a minimum of 91% thermal efficiency and is available for use with either natural gas or propane. 

Note: Model SHH high efficiency separated-combustion units require installation of either a horizontal or vertical vent/ combustion air kit that includes a specially designed concentric adapter box. The unique box design allows for only one building penetration for both the flue outlet and combustion air inlet.

Model SHH separated-combustion units are approved for space heating applications in commercial/industrial installations in the United States and Canada by ETL Testing Agency.

Complies with ASHRAE Standard 90.1.


Wärmeleistung ( MBH )

Kälteleistung ( MBH )

Luftvolumenstrom ( CFM )

Wirkungsgrad bei Vollast ( Bruto )


  • Patented* Tcore3 Combustion System - includes Titanium Stabilized Aluminized Steel Heat Exchanger and aluminum secondary heat exchanger
  • ETL certification
  • Minimum 91% thermal efficiency
  • Proven separated-combustion technology including shipped-separate vent/combustion air kit (vertical or horizontal)
  • Maximum 75 F temperature rise
  • Circuit breaker protected transformer for 24-volt controls
  • Integrated circuit board with diagnostic indicator lights
  • Multi-try direct spark ignition with 100% lockout
  • High temperature limit control
  • Vibration/noise isolated venter motor, blower(s) and blower motor (spring or rubber isolators)
  • L50 bearing rating with a life expectancy of 150,000 hours
  • Reverse airflow limit switch
  • Easily convertible single gas orifice system
  • Socketed, high quality switching relays to facilitate service
  • All service and vent connections from a single side
  • Vent runs up to 50 feet - sizes 130C-260D (40feet - size 350E)
  • Through-the-cabinet or through-the-base electrical
  • Engineered condensate management
  • Three hinged service doors with heavy duty hardware
  • Fully gasketed door panel with safety door switch
  • Pre-coat white gloss painted cabinet finish
  • 4-point base suspension; or slab or floor mounting
  • Fork lift openings built into the heavy gauge steel base
  • Natural Gas or Propane
  • Blocked condensate drain pressure switch
  • Vent pipe temperature limit switch


  • Optional 409 Stainless Steel Primary Heat Exchanger
  • Heat Exchanger Extended Warranty - 5-year or 10-year
  • Controls: Space Temperature Heating only, Heating and Cooling
    • Analog two-stage gas valve with room thermostat control (thermostat is available as a shipped separate
      accessory or may be field-supplied)
    • Digital two-stage heating/three-stage cooling with room command module and optional Lon or N2 communication.
  •  Supply Voltage - 115/1; 208/1; 230/1; 208/3; 230/3; 460/3; 575/3
  • UV Germicidal Lamps - Ultraviolet Emitter for neutralization of VOCs and airborne micro-organisms for improved IAQ - not filtration. (Requires Cooling Coil Cabinet Option AU. Separate 115/1 or 208/1 or 230/1 wiring/breaker and a separate disconnect must be provided.)
  • Inlet Air Filters - 1" or 2" disposable or permanent; 1", 2", or 4" pleated disposable; arranged in vertical flat bank for ease of service
  • Cabinet Configuration and Construction
    • Left or right side controls
    • Insulation; single or double wall with standard (R value 3.8) or high-density (R value 4.4) insulation
    • Blower cabinet screen, inlet duct connection flange
  • Discharge duct flange or louvers (horizontal or horizontal and vertical)
  • Mixing Box Module
    • Five inlet configuration combinations including top, bottom, and rear motorized modulating return air and outside air dampers
    • Direct-coupled 24VAC damper actuators
    • Economizer package Enthalpy
  • Blower Motor (1/3 to 5 HP) - see pressure drops and blower charts
    • Open drip proof, TEFC, or premium efficiency
    • Adjustable sheave and belt
    • Motor contactor; IEC motor starter; or factory-installed variable frequency drive
  • Cooling Coil Module with coil
    • DX coil (single, dual or 1/3-2/3 circuit; galvanized or stainless casing; copper or aluminum fi ns [coated or uncoated]) - non-ozone depleting, R410A refrigerant
    • Chilled water coil (1/4, 1/2, 3/4, or full circuiting; galvanized or stainless casing; copper or aluminum fins [coated or uncoated])
  • Unit mounted, lockable, non-fused service on/off switch
  • Convenience Outlet (requires separate power supply)
  • Firestat
  • Discharge Temperature Low Limit
  • Over/Under Voltage or Phase Loss Protection
  • High Ambient Limit (burner cutoff)
  • Gas Pressure Switches (high, low, or both)


  • Variable Frequency Drive (factory-installed is also available)
  • Downturn Nozzles (25-65 degree or 50-90 degree) with directional louvers
  • Thermostats to match analog controls
  • Gas Pressure Regulator
  • Smoke Detector (in ductwork)
  • Remote Control Console and Unit Monitoring
  • Main Unit Disconnect Switch
  • M-Series condenser


8 Dateien


Split System Marketing Catalog
Split Systems Marketing Catalog
Datei herunterladen
824.4 kB
Comp Edge: The wide range of options and features of PreevA and the M-Series Condensing unit
Competitive Edge: The wide range of options and features of PreevA and the M-Series Condensing unit
Datei herunterladen
599.9 kB
Comp Edge: Model RHH, SHH - the FIRST commercial air handler split system with up to 93% efficient gas heat
Competitive Edge: Model RHH, SHH - the FIRST commercial air handler split system with up to 93% efficient gas heat
Datei herunterladen
286.1 kB
Comp Edge: Superior Dehumidification with ReHeat Pump™
Advantages of using a ReHeat Pump vs. a hot gas reheat (HGRH) system
Datei herunterladen
126.5 kB
Energy Edge: Estimation of fuel savings by using Model RHH or SHH in various areas of North America
Energy Edge: Estimation of fuel savings by using Model RHH or SHH in various areas of North America
Datei herunterladen
683.7 kB
Energy Edge: Condensing Gas Heating (90%+ Efficient)
No matter what region you are in North America, Heating makes up the majority of the average building energy usage. By using Reznor condensing gas heating equipment (over 90% fuel efficient), you can make a big impact on the overall utility bills.
Datei herunterladen
144.7 kB
Energy Edge: By matching building heating and cooling needs, the PreevA Series can save energy
Energy Edge: By matching a building heating and/or cooling needs (at full or part load), the PreevA Series can save energy and provide more consistent comfort levels
Datei herunterladen
486.7 kB
General Product Brochure
Overview brochure covering the Reznor product line.
Datei herunterladen
1.6 MB

Technische Daten
3 Dateien

Technische Daten

Catalog - Split System
Commercial split systems catalog
Datei herunterladen
3.4 MB
Submittal - Separated Combustion
Separated combustion technical information
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164.7 kB
Sample Specs - SHH
Sample specifications for Model SHH
Datei herunterladen
18.8 kB

Wartung / Installation
15 Dateien

Wartung / Installation

Unit Installation Manual - Indoor PreevA
Installation Manual for Models PDH, PEH, PXH, SDH & SHH
Datei herunterladen
2.7 MB
Parts Manuals - PreevA - Replacement Parts
Replacement parts for PreevA, Models PDH, PEH, PXH, RDH, REH, RHH, RXH, SDH, & SHH
Datei herunterladen
5.5 MB
Option - Installation - Remote Display
Installation instructions for optional remote mounted display for PreevA & MAPS Series, and Model ZQYRA
Datei herunterladen
335.8 kB
Option - Installation - Downturn Nozzle Installation - Indoor PreevA
Installation of downturn nozzles for indoor PreevA units
Datei herunterladen
753.7 kB
Option - Installation - Venting Instructions - SHH
Venting instructions for Model SHH
Datei herunterladen
878.3 kB
Parts Manuals - Functional Replacement Fan/Blower Controls and Limit Controls
 Parts manual for functional replacement fan/blower controls and limit controls
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322.8 kB
Controls - PreevA D21 Control Manual
PreevA digital control D21, makeup air control for air hanlder systems.
Datei herunterladen
1.2 MB
Controls - PreevA D19 Control Manual
Digital controller D19 for space temperature control for PreevA air hanlder systems.
Datei herunterladen
1.2 MB
Parts Manuals - Replacement Ignition System and Gas Valves
Replacement ignition system and gas valves by serial number code and Maxitrol system components by serial number suffix
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964.6 kB
Operation - PreevA
Operation, maintenance and service manual for PreevA systems, Models SHH, RXH, RDH, REH, PXH, SDH, PDH, & PEH
Datei herunterladen
861.1 kB
Field Service - Adjustment of Control FX06 - PreevA
Application and instructions for field adjustment of the contorl (Model FX06) in digital control options D12B, D12C, D12D, D12E, D12F, & D12G for PreevA units
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766.6 kB
Field Service - Damper Motor Replacement
Instructions for replacement kit (261697) for Belimo damper motor
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161.8 kB
Field Service - Replacement of Discontinued Relays
Installation for kits designed to replace relays no longer available from suppliers. Applies to all Reznor units using obsolete relays.
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340.4 kB
Manuel d'installation - Intérieur PreevA
Manuel d'installation applicable aux: unités de traitement d'air modèle PDH, modèle SDH, modèle PEH, modèle PXH et modèle SHH
Datei herunterladen
3.8 MB
Opération - Série PreevA
Opération, maintenance et réparation PreevA ® Modèles RHH, SHH,  PDH, PEH, PXH, SDH, RDH, REH, et RXH
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2.2 MB

Andere Dateien
1 Datei

Andere Dateien

Warranty Statement
Reznor equipment limited warranty statement
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183.4 kB