INDUCED DRAFT BLOWER

HORIZONTAL VENTING - RESIDENTIAL INSTALLATION

UPWARD SLOPE

 

12 INCHES

 

MIN. (30.5CM)

 

FLUE TRANSITION

 

(PROVIDED)

VENT TERMINATION CAP

LISTED THIMBLE THROUGH

COMBUSTION WALL

MAY BE SINGLE WALL (26 GSG) GALV. OR EQUIV. STAINLESS STEEL SEALED ACCORDING TO THESE INSTALLATION INSTRUCTIONS OR A SINGLE SECTION OF TYPE B-1 VENT. SLOPED: + 1/4 INCH FOR 1 FOOT RUN MINIMUM.

NOTE - MINIMUM HORIZONTAL LENGTH 3FT. (914MM), NOT INCLUDING CAP FOR TERMINATION.

MAXIMUM HORIZONTAL LENGTH 5FT. (1.5M) PLUS ONE

90-DEGREE ELBOW.

COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER.

FIGURE 6

F – VENTING USING A MASONRY CHIMNEY

The following additional requirements apply when a lined masonry chimney is being used to vent the compact unit heater.

1.Masonry chimneys used to vent Category I units heaters must be either tile-lined or lined with a listed metal lining system or dedicated gas vent. Unlined masonry chimneys are prohibited. A category I appliance must never be connected to a chimney that is servicing a solid fuel appliance. If a fireplace chimney flue is used to vent this appliance, the fireplace opening must be permanently sealed.

2.A fan assisted unit heater may be commonly vented into an existing lined masonry chimney provided:

•The chimney is currently serving at least one draft-hood equipped appliance.

•The vent connector and chimney are sized in accordance with venting tables in the (American) National Fuel Gas

Code ANSI Z223.1 or (Canada) CSA B149.1 Natural Gas and Propane Installation Code.

IMPORTANT Single appliance venting of a fan assisted unit heater into a tile lined masonry chimney (interior or outside wall) is prohibited. The chimney must first be lined with either type B-1 vent or an insulated single wall flexible vent lining system, sized in accordance with venting tables in the (American) National Fuel Gas Code ANSI Z223.1 or (Canada) CSA B149.1 Natural Gas and Propane Installation Code.

3.A type B-1 vent or masonry chimney liner shall terminate above the roof surface with a listed cap or a listed roof assembly in accordance with the terms of their respective listings and the vent manufacturer’s instructions.

4.Do not install a manual damper, barometric draft regulator, or flue restrictor between the unit heater and the chimney.

5.If type B-1 double-wall vent is used inside a chimney, no other appliance can be vented into the chimney. Outer wall of type

B-1 vent pipe must not be exposed to flue products.

6.Insulation for the flexible vent pipe must be an encapsulated fiberglass sleeve recommended by the flexible vent pipe manufacturer.

7.The space between liner and chimney wall should NOT be insulated with puffed mica or any other loose granular insulating material.

8.If type B-1 vent or an insulated flexible vent pipe cannot be used as liners, the chimney must be rebuilt to accommodate one of these methods or some alternate approved method must be found to vent the appliance. When inspection reveals that an existing chimney is not safe for the intended purpose, it shall be rebuilt to conform to nationally recognized standards, lined or relined with suitable materials or replaced with a gas vent or chimney suitable for venting unit heaters. The chimney passageway must be checked periodically to ensure that it is clear and free of obstructions.

G – REMOVAL OF UNIT FROM COMMON VENT

In the event that an existing unit heater is removed from a venting system commonly run with separate gas appliances, the venting system is likely to be too large to properly vent the remaining attached appliances. The following test should be conducted while each appliance is in operation and the other appliances are not in operation, yet remain connected to the common venting system. If the venting system has been installed improperly, the system must be corrected.

1.Seal any unused openings in the common venting system.

2.Visually inspect the venting system for proper size and horizontal pitch. Determine there is no blockage or restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.

3.If practical close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4.Follow the lighting instructions. Place the appliance being inspected in operation. Adjust thermostat so appliance will operate continuously.

Enerco Compact Unit Heater

9

Operating Instructions and Owner’s Manual

Page 8 Page 10
Page 9
Image 9
Enerco HSU 45, HSU 75 operating instructions Venting Using a Masonry Chimney, Removal of Unit from Common Vent
Page 8 Page 10

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.
Top Page Image Contents