Horizontal Venting Commercial | Enerco HSU 75, HSU 45 specs

5.Vent termination must be a minimum of 4’ (1.2m) below or 4’ (1.2m) horizontally from any soffit vent or under-eave vent.

6.Vent must be a minimum of 6’ from an inside corner formed by two exterior walls. If possible, leave a 10’ clearance.

7.Vent termination must be a minimum of 10’ (3m) from any forced air inlet (includes fresh air inlet for other appliances, such as a dryer).

8.When termination is routed through an exterior combustible wall the vent must be supported using a listed clearance thimble. Where local authorities permit, a single section

of type B-1 vent pipe may be used as an alternative to the thimble. When using a type B-1 vent termination use the clearances specified by the vent manufacturer. Seal the connection between the single wall and double wall pipes and the annular space of the double wall pipe as shown in figure 2. Inside edge of vent termination tee must be at least 12 inches from outside wall as shown in figure 3.

9.For horizontal venting, the vent pipe shall be supported with hangers no more than 3ft. (1m) apart to prevent movement after installation.

D – HORIZONTAL VENTING – COMMERCIAL

1.Horizontal commercial installations are for buildings which are not attached to living spaces. The vent may be single wall vent material installed according to the sections

Venting A - General Recommendations and Requirements and C - Horizontal Venting General and D - Horizontal Venting - Commercial. Refer to figure 3.

2.The vent pipe diameter for horizontal commercial installations shall be 4V” (76mm) on 45 units. In all cases, a flue transition piece (supplied) is required to fit over the outlet of the induced draft assembly on the appliance.

3.Refer to table 2 for maximum vent connector lengths.

4.Select a wall termination point that will maintain ¼” rise per foot slope of horizontal run of vent pipe. The vent may be single wall material minimum 26 GSG (0.46mm) galvanized steel or equivalent grade stainless steel. Seal single wall vent material according to the section A - General

Recommendations and Requirements.

5.For upward sloped vent a condensate tee and drain must be installed within the first 5’ (1.5m) from the unit heater to protect the appliance. If a flexible condensate drain line is used, the drain line must include a loop entering the structure. If the unit is shut down for an extended period of time and will be exposed to sub-freezing temperatures, the condensate may freeze.

E – HORIZONTAL VENTING – RESIDENTIAL

1.For horizontal residential installations these units are certified as Category I appliances. The vent may be single wall material minimum 25 GSG (0.46mm) galvanized steel or equivalent grade stainless steel. Venting A - General Recommendations and Requirements and C - Horizontal Venting General and E - Horizontal Venting - Residential. Refer to figure 6.

2.The vent pipe diameter for horizontal residential installations shall be 4” (100mm) on 45 units. A standard vent transition is required at unit in addition to the transition supplied with the unit.

3.The maximum vent length is 5’ (1.5m) plus one 90-degree elbow. The minimum length is 3’(.91m).

4.The vent must maintain a ¼” rise per foot of slope upwards toward the termination.

CONDENSATE DRAIN THROUGH TEE PIPE AND DRAIN LOOP

UPWARD SLOPE ON HORIZONTAL VENT-COMMERCIAL INSTALLATION

MAY BE SINGLE WALL (26 GSG) GALV. OR EQUIV. STAINLESS STEEL SEALED ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPE: + 1/4 INCH FOR 1 FOOT RUN MINIMUM.

FLUE TRANSITION

(PROVIDED)

LISTED THIMBLE

THROUGH COMBUSTIBLE

WALL

INDUCED DRAFT BLOWER

NOTE - MINIMUM HORIZONTAL LENGTH 3 FT. (914MM),
NOT INCLUDING CAP FOR TERMINATION. REFER TO TABLE	DRAIN LOOP WITH WATER
2 FOR MAXIMUM LENGTH AND NUMBER OF ELBOWS.	TRAP (TO CONDENSATE DRAIN)

12 INCHES MIN.

(30.5 CM)

VENT TERMINATION

CAP

12” (30.5 CM)

MINIMUM ABOVE ALL HIGHEST SNOWFALL

COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER

FIGURE 3

Enerco Compact Unit Heater

Operating Instructions and Owner’s Manual

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.

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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.

Enerco HSU 75, HSU 45 Horizontal Venting Commercial, Horizontal Venting Residential

Models: HSU 45 HSU 75