Clearance to Combustibles. Brant Radiant Heaters HLV-170, HLV-80, HLV-50, HLV-90, HLV-140, HLV-60, HLV-100, HLV-175, HLV-75, HLV-180

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Clearance to Combustibles. Brant Radiant Heaters HLV-170, HLV-80, HLV-50, HLV-90, HLV-140, HLV-60, HLV-100, HLV-175, HLV-75, HLV-180 | Manualzz

HLV Series



Reflector Assembly

Common Reflector Accessories

Figure 3.15

• Common Reflector Accessories

Elbow Reflector* (P/N: RE)

Highly polished aluminum reflector used over a 90° elbow accessory fitting.

U-shaped Reflector* (P/N: RU)

Highly polished aluminum reflector used over a 180°

U-bend accessory fitting.

Tee Reflector (P/N: V-RTE)

Highly polished aluminum reflector used to cover a

V-T or V-TI tee fitting.

Cross Reflector* (P/N: V-RCR)

Highly polished aluminum reflector used to cover a

V-CR cross fitting.

Side shield extension** (P/N: SSE)

Highly polished side shield extension used to direct infrared rays downward, away from sidewalls and combustibles.

* Reflectors cannot be rotated once reflector accessories are installed.

** Refer to the Clearance to Combustibles data found in Chart 1.2, P.9 for minimum distances to

combustibles when side shield extension(s) are used.

Complete vacuum system options are detailed in the Detroit Radiant Products Company HLV Series

Accessory Guide (F/N: LPKHLV) or online at



Installation •

Burner Assembly and Mounting

HLV Series

Burner Assembly and Mounting



Conditions such as wind drafts or other variables can cause movement of the heater and may require it to be rigidly mounted. Avoid excessive movement and/or vibration of the gas connection by rigidly mounting the burner control box. All remaining hanging points should use chains to allow for expansion.

The heater must be independently supported and in no case shall the gas or electrical supply support the weight of the heater.


Determine the mounting chain locations for hanging the burner control box.


Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.


Attach S-Hook and #1 double loop chain (P/N: THCS) to anchor. Check that it is securely connected.


Attach chain assemblies and S-Hooks to mounting brackets on the burner control box. Adjust chain lengths until level and in straight alignment with radiant tubes (Figure 3.16).

Figure 3.16 • Burner Control Box Assembly • Side View

Burner box mounting bracket

Burner tube is in straight alignment with 10 ft. Primary

Combustion Chamber



Burner Sight Glass

(bottom side of the tube)


Figure 3.17 • Burner Control Box • End View







30 31

HLV Series

Flue Venting



Venting Requirements



Insufficient ventilation and/or improperly sealed vents may release gas into the building which could result in health problems, carbon monoxide poisoning or death.

Improper venting may result in fire, explosion, injury or death.

Seal vent pipes with high temperature sealant and three (3) #8 sheet metal screws.

Vent enclosed spaces and buildings according to the guidelines in this manual and applicable national, state, provincial and local codes.

Prior to installing vent material, the following guidelines and all applicable codes must be observed to ensure proper system performance and safety. Local codes may vary. In the absence of local codes, refer to and comply with the National Fuel Gas Code ANSI Z223.1 (NFPA 54) latest edition. In Canada, refer to and comply with CAN/CGA B149.1 and B149.2 Installation Codes for Gas Burning Appliances, or the National Standards of Canada.

Flue Venting General Requirements:


The HLV System is designed to operate with a 4 in. diameter exhaust vent.


Single-wall 26 gauge (min.) flue vent must be used. Use only corrosion resistant materials for the discharge line from the pump to the point of discharge.


The use of an approved wall or roof thimble and double-wall Type B-vent is required for the portion of vent pipe that runs through combustible material in the building wall or roof.


Seal all flue vents with high temperature sealant and three (3) #8 sheet metal screws to prevent leakage of flue gases.


Maximum vent length is 25 ft.; minimum of 2 ft. If needs are otherwise, consult factory for approval.


Do not use more than two 90° elbows in the exhaust vent.


Protect vent cap from potential blockages, such as snow.


Vent must terminate a minimum of 4 ft. (1.2 m) below, 4 ft. (1.2 m) horizontally from, and 1 ft.

(30 cm) above any window or door that may be opened or gravity air inlet into the building.


Vent must terminate a minimum of 3 ft. (.9 m) above any forced air inlet that is located within

10 ft. (3.1 m).

The bottom of the vent terminal must be located a minimum of 12 in. (30 cm) above grade level and must extend beyond any combustible overhang. Vents adjacent to public walkways must terminate a minimum of 7 ft. (2.1 m) above grade level.

Vent must be a minimum of 36 in. below or extend beyond any combustible overhang.

Protect the building from potential damage or discoloration resulting from flue gases by maintaining a minimum distance of 6 inches from the sidewall of the building. On


systems, extend the vent a minimum of 2 ft. beyond the building exterior to protect from condensate drippage.


A condensate trap is required on

condensing systems if a vertical rise exists in the discharge line (Figure 3.19). For ease of condensate disposal, horizontal venting is recommended. Unless local codes dictate otherwise, the condensate trap can be eliminated if a horizontal discharge is pitched downward 1 in./Ft. (Figure 3.18). Adhere to local codes for proper condensate disposal.

Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.


The vent terminal must extend a minimum of 2 ft. (.6 m) above the roof.



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