Lennox International Inc. TUA45S 사용자 설명서

다운로드
페이지 21
Page 11
 
G-Horizontal Venting Concentric Kit - Residential  
  1-For horizontal residential installations the 45/60/75 
units are certified as Category I appliances with a 
concentric vent/adapter/cap kit. The only concentric 
vent/adapter/cap kits that may be used are the kits 
supplied by Advanced Distributor Products. The vent 
used to connect from the concentric adapter to the 
unit may be single wall material minimum 25 GSG 
(0.46mm) galvanized steel or equivalent grade 
stainless steel installed according to the sections 
Venting  A - General Recommendations and 
Requirements  
and  C - Horizontal Venting General 
and  G - Horizontal Venting Concentric Kit - 
Residential.
 Refer to figure 7. The air inlet may be 
single wall material or U.L. listed single wall flex vent 
connector.  
 
 
2-The vent pipe diameter for horizontal residential 
installations shall be 4” (100mm) on 45/60/75 units. 
Refer to table 4. 
  3-The maximum vent length is 5’ (1.5m) plus one 90-
degree elbow. 
  4-The vent must maintain a ¼” rise per foot of slope 
upwards toward the termination. 
 
 
FIGURE 7
HORIZONTAL VENTING – CONCENTRIC VENT INSTALLATION 
LISTED THIMBLE 
THROUGH 
COMBUSTIBLE WALL 
GROUND LEVEL
 
NOTE - MINIMUM HORIZONTAL LENGTH 3 FT. (91.4 CM) NOT 
INCLUDING TERMINATION. 
 
VENT AND AIR INLET CONNECTORS FROM UNIT TO CONCENTRIC ADAPTER MAY BE SINGLE WALL (26 GSG) GALV. OR 
EQUIVALENT STAINLESS STEEL SEALED ACCORDING TO THESE INSTALLATION INSTRUCTIONS. SLOPE VENT + 1/4 INCH 
FOR 1 FOOT RUN MINIMUM. AIR INLET MAY ALSO BE U.L. LISTED SINGLE WALL FLEX VENT CONNECTOR.
 
COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER.
 
VENT TERMINATION 
AND AIR INLET 
TERMINATION 
12” (30.5 CM) MINIMUM ABOVE 
HIGHEST SNOWFALL
 
 
H-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-  In so far as is 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.  
5-  Test for spillage at the draft hood relief opening after 
five minutes of main burner operation. Use the flame 
of a match or candle, or smoke from a cigarette, 
cigar, or pipe.