Sterling GG-120 User Manual

Page of 44
16
VENTING*
All unit heaters must be vented! All Venting installations shall be in accordance with the latest edition of Part 7, 
Venting of Equipment of the National Fuel Gas Code, ANSI Z223.1, or applicable provisions of local building codes. 
Refer to notes* below for Canadian installations. Refer to Figures 12-19.
 
 CARBON MONOXIDE! Your venting system must not be blocked by any snow, snow 
drifts, or any foreign matter. Inspect your venting system to ensure adequate ventilation exists at all 
times! Failure to heed these warnings could result in Carbon Monoxide Poisoning (symptoms include 
grogginess, lethargy, inappropriate tiredness, or fl ue-like symptoms).
When an existing heater is removed or replaced in 
venting system, the venting system may not be properly 
sized to vent the attached appliances. An improperly 
sized vent system can cause formulation of condensate 
or leakage or spillage of fl ue gases. 
The following steps shall be followed with each appliance 
connected to the venting system placed in operation, 
while any other appliances connected to the venting 
system are not in operation:
1.  Seal any unused openings 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 and these instructions. 
Determine that there is no blockage or restriction, 
leakage, corrosion and other deficiencies, which 
could cause an unsafe condition.
3.  In so 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. Turn on 
clothes dryers and any exhaust fans, such as range 
hoods and bathroom exhausts, so they shall operate 
at maximum speed. Do not operate a summer 
exhaust fan. Close fi replace damper.
4.  Follow the lighting instructions. Place the appliance 
being inspected in operation. Adjust thermostat so 
that the appliance will operate continuously.
5.  After it has been determined that each appliance 
connected to the venting system properly vents 
when tested as outline above, return doors, windows, 
exhaust fans, fi replace dampers, and any other gas-
burning appliance to their previous condition of use.
6.  If improper venting is observed during any of the 
above tests, the venting system must be corrected 
immediately so that the system conforms with 
the National Fuel Gas Code, ANSI Z223.1. When 
resizing any por tion of the venting system, the 
venting system should be resized to approach the 
minimum size as determined using the appropriate 
tables in Appendix G of the National Fuel Gas Code, 
ANSI Z223.1.
The unit heater shall be connected to a factory built 
chimney or vent complying with a recognized standard, 
or a masonry or concrete chimney lined with a lining 
material acceptable to the authority having jurisdiction. 
Venting into an unlined masonry chimney is 
prohibited.
ADDITIONAL REQUIREMENTS FOR CANADIAN INSTALLATIONS
*The following instructions apply to Canadian installations in addition to installation and operating instructions.
1.   Installation must conform with local building codes, or in the absence of local codes, with current 
CGA-B149.1, Installation Codes for Natural Gas Burning Appliances and Equipment, or CGA-B149.2, Installation 
Codes for Propane Gas Burning Appliances and Equipment.
2.   Any reference to U.S. standards or codes in these instructions are to be ignored and the applicable Canadian 
standards or codes applied.