Detroit Radiant Products LD3-15-40, Руководство по установке, Страница: 24 / 60

24
LD3 Series
General Venting Requirements
The venting system for LD3 series heaters may terminate horizontally through a sidewall or vertically
through the roof, and may be individually or commonly vented. Configuration of the vent termination
determines the category type. All model heaters must be installed in accordance to the requirements of
this section, as well as the requirements of its category determination, as described in this manual. To
determine your applications category type, review “Vertical Venting (Category I)” and “Horizontal Venting
(Category III)” sections of this manual.
All LD3 Series Model Requirements:
• Exhaust vent pipe must be 3 inch nominal size.
• Use vent pipe material that is corrosion-resistant galvanized steel of a thickness that meets the
National Fuel Gas Code.
• Do not exceed a maximum vent length of 20 feet.
• Maintain a minimum vent length of 3 feet.
• Maintain a minimum 12 inches of straight pipe from the flue outlet before any directional changes
are made in the venting system.
• Have all vent pipe seams or connectors fastened together with at least three corrosion resistant
sheet metal screws (field supplied).
• Maintain a 6 inch clearance around all single wall vent pipe from any combustible materials. For
double-wall Type-B vent, follow the vent manufacturer’s clearances to combustibles.
• The equivalent length for a 3 inch 90° elbow is 3 feet.
• The equivalent length for a 4 inch 90° elbow is 5 feet.
3.0 Installation
• General Venting Requirements
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each appliance connected to the venting system being placed into
operation could result in carbon monoxide poisoning or death. The following steps shall be followed for each
appliance connected to the venting system being placed into operation, while all other appliances connected to the
venting system are not in operation:
1) Seal any unused opening in the venting system.
2) Inspect the venting system for proper size and horizontal pitch, as required in the
National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CSA B149.1 and these instructions.
Determine that there is no blockage or restriction, leakage, corrosion, and other deficiencies which could cause
an unsafe condition.
3) As far as practical, close all building doors and windows and all doors between the space in which the
appliance(s) connected to the venting system are located and other spaces of the building.
4) Close fireplace dampers.
5) Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summer
exhaust fan.
6) Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the thermostat so
appliance is operating continuously.
7) Test for spillage from draft hood equipped on appliances at the draft hood relief opening after 5 minutes of main
burner operation. Use the flame of a match or candle.
8) If improper venting is observed during any of the above tests, the venting system must be corrected in
accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or Natural Gas and Propane
Installation Code, CSA B149.1.
9) After it has been determined that each appliance connected to the venting system properly vents when tested
as outlined above, return doors, windows, exhaust fans, fireplace dampers, and any other gas-fired burning
appliance to their previous conditions of use.
WARNING
!