Enerco HSU 75, HSU 45 Combustion and Ventilation AIR, Venting, Unit Heater Installation

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These units are approved for residential applications. For installation in a residential garage, these units must be installed so that burners and ignition source are located no less than 18” (457mm) above floor. Heater must be located or protected to avoid physical damage by vehicles. Refer to CSA B149.1, Natural Gas and Propane Installation Code current edition.

In a confined area, the heater must be installed in accordance with the CSA B149.1, Natural Gas and Propane Installation Code. Be sure to check with local codes and ordinances for additional requirements.

UNIT HEATER INSTALLATION

Unit is shipped ready for installation. Unit may be installed as shown in figure 1 or inverted 180o depending on desired location as governed by clearances, vent connection, air direction, gas supply, electrical supply and service accessibility.

1.If installing unit in an inverted position: Remove and retain screws securing door and rotate door 180o. Secure with retained screws. Rotate louvers directing airflow as desired.

2.Choose location for mounting brackets.

3.Remove and retain three screws along top edge (bottom edge when inverted) of front of unit.

4.Align screw holes on mounting bracket with holes along top edge (either upright or inverted) of unit. Secure one mounting bracket to front of unit with retained screws.

Secure other mounting bracket to back of unit with screws provided in bag assembly containing flue transition.

5.To support unit, secure mounting bracket to ceiling joist or truss. Unit may also hang on rods as shown in figure 1.

INSTALL UNIT HEATER

SUPPORT

MOUNTINGRODS BRACKETS (2)

FIGURE 1

COMBUSTION AND VENTILATION AIR

Adequate facilities for supplying air for combustion and ventilation must be provided in accordance with the latest edition of section 5.3, Air for Combustion and Ventilation, of the National Fuel

Gas Code, ANSI Z223.1, in the U.S.A., CSA B149.1 Natural Gas and Propane Installation Code, or applicable provisions of local building codes.

All gas fired appliances require air to be used for the combustion process. In many buildings today, there is a negative indoor

air pressure caused by exhaust fans, etc. If sufficient quantities of combustion air are not available, the heater or another or another appliance will operate in an inefficient manner, resulting in incomplete combustion which can result in the production of excessive carbon monoxide.

CAUTION Insufficient combustion air can cause headaches, nausea, dizziness, asphyxiation or death.

If indoor air is to be used for combustion, it must be free of the following substances or the life of the heat exchanger will be adversely affected: chlorine, carbon tetrachloride, cleaning solvent, halogen refrigerants, acids, cements and glues, printing inks, fluorides, paint removers, varnishes, or any other corrosives.

VENTING

A – GENERAL RECOMMENDATIONS AND REQUIREMENTS

NOTE: The vent is a passageway, vertical or nearly so, used to convey flue gases from an appliance, or its vent connector, to the outside atmosphere. The vent connector is the pipe or duct that connects a fuel-gas burning appliance to a vent or chimney.

Unit heaters must be vented in compliance with all local codes or requirements of the local utility, the current standards of the (American) National Fuel Gas Code, ANSI Z223.1 or (Canada)

CSA B149.1 Natural Gas and Propane Installation Code, and the following instructions.

A metal stamped/extruded transition is supplied with this certified unit. It must not be modified or altered and must be installed

on the outlet of the induced draft blower assembly prior to the installation of the vent or vent connector. Failure to comply with this requirement will void the certification of the unit by the approval agencies. All joints shall be secured with at least two corrosion resistant screws. All joints must be checked for gas tightness after installation.

TABLE 2

MAXIMUM VENT LENGTHS

HORIZONTAL VENTS

No. of

ft

m

Elbows

 

 

 

 

 

 

 

 

1

25

7.6

 

 

 

2

20

6.1

 

 

 

3

15

4.6

 

 

 

4

10

3.0

 

 

 

5

5

1.5

 

 

 

Maximum length of vent connector not to exceed 30 ft. (9.1m).

Enerco Compact Unit Heater

6

Operating Instructions and Owner’s Manual

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Contents For Your Safety MR. HeaterHSU75LP Starting Serial NumbersContents General Hazard WarningMHU45/MHU75 and HSU45/HSU75 Unit Dimensions TOP ViewBack View Side View START-UP and Performance Check List Requirements CSA in the USA Garage InstallationsShipping Requirements CSA in CanadaVenting Unit Heater InstallationCombustion and Ventilation AIR General Recommendations and RequirementsRoof Flashing Roof Pitched Horizontal Venting GeneralVent Termination on Single Wall Vent Clearance Shall not be Athimble Concealed SpaceHorizontal Venting Residential Refer to for maximum vent connector lengthsHorizontal Venting Commercial Condensate Drain Through TEE Pipe and Drain LoopRemoval of Unit from Common Vent Venting Using a Masonry ChimneyHorizontal Venting Residential Installation Vent Termination CAP Listed Thimble Through Combustion WallGAS Supply Connection Line Voltage Field WiringElectrical Connections GAS Supply to Unit HeaterStart UP and Operation GAS ConnectionLeak Check Unit START-UPAdjustments Service Ladder Diagram Flue and Chimney Repair PartsElectrical Failure to OperateParts List See Back page for Parts Ordering InformationEnerco Compact Unit Heater For Information Regarding Service Limited WarrantyParts Ordering Information Limitée Garantie Comman LA SUR OrmationsinfDœuvre-main Fabricant du directementCompacts chauffage de Appareils nercoE Listepiècesdes Laissée ÉTÉ a Colonne Cette Électrique CircuitVI Intentionnellement NE Lappareilpas IonneEscalier EN Iagrammed PANNEAUCOMMAN6À Nnecteurd SchémacâblageavecduappareilsdesLimiteur Condu UitdCommutateur Lappareil RéglagesAGE Chau GazduVériicationf RobertshawSoupape LA Pour ET ÉmarragedonctionnementfChaude GAZ EN Alimentation AvertissementAvertissement Tension LA À Place SUR CâblageCheminée UNE Utilisant Ventilationf Horizontale Ventilation Rési InstallationMaçonnerie EN Commune VentilationHorizontale Ventilationd CommercialMilieu RésientieldHorizontale Ventilationc ET Commerciales InstallationsVentilationb VEN Wallt Single on Termination VentVentilation AGE InstallationET Combustiond Eair AtionsAéroned Garage UN ANS InstallationsHangars EXIGENCES.U-.É AUX SAPlan EN VUE HSU45/HSU75 ET MHU45/MHU75DENSIONS AppareilsdesLatérale VUE Arrière VUE 171 3/4-6 108 1/4-4 165 1/2-6 140 1/2-5 432 305Tablematièresdes AngercmmoAvertissement Elgénérale EDébut de série de Numéros Aver UFF P CHD EPour Reila AP

HSU 45, HSU 75 specifications

Enerco HSU 75 and HSU 45 are standout models in the realm of portable heating solutions, designed for efficiency and convenience. These units serve a range of applications, from construction sites to workshops, and even for personal use in outdoor settings. With their robust engineering and advanced features, they are ideal for anyone needing reliable warmth in cold conditions.

One of the main features of the Enerco HSU series is their impressive heating capacity. The HSU 75 offers a maximum output of 75,000 BTU, making it suitable for larger spaces, while the HSU 45 delivers 45,000 BTU, perfect for smaller areas. This flexibility allows users to choose the right model based on their specific heating needs.

Both models utilize a forced air heating system, which efficiently circulates warmth throughout the space. This technology ensures rapid heating, allowing for immediate relief from the cold, an essential feature in situations where time is of the essence.

Durability is another key characteristic of the HSU series. Constructed with heavy-duty materials, these units are built to withstand the rigors of demanding environments. The robust design makes them suitable for outdoor use, capable of enduring tough weather conditions without compromising performance.

Safety is paramount with Enerco heaters, and both the HSU 75 and HSU 45 come equipped with safety features such as automatic shut-off sensors and flame failure devices. These innovations give users peace of mind, knowing that the unit will operate safely even in unpredictable environments.

Portable design is a hallmark of these heaters, featuring built-in handles and a lightweight structure. This makes it easy for users to transport the units from one location to another, enhancing their versatility in use.

Finally, both models are compatible with various fuel sources, allowing for flexibility based on user preference and availability. Whether using propane or natural gas, users can enjoy efficient heating tailored to their requirements.

In conclusion, the Enerco HSU 75 and HSU 45 represent a perfect blend of power, safety, and portability. Their advanced features and durable build make them ideal companions for anyone needing dependable heat in diverse scenarios. With these units, warmth is always within reach, ensuring comfort regardless of the harshness of the outdoor conditions.
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