9736 EVERGREEN WAY 2016-01-01 MF Import

la-� tlt� s way �-- nven —These radiant healers are approved lor operatian without utdoor vent. Befare fnstelling a tubular inlrared healer in the unvented mode, extreme cara should be exarcised In examining the building atmosphore and structure. Fresh alr requirements are q CFM/7000 BTUH lor neturel gen end 5 CFM/1G00 BTUH for propene gee. • Donotopereleintheum�entedmodewhendustordirtarepresent. • DonotoperateintheunvenledmodeinabuilJingwherecontami- nents are in the eir �hat will produce a loxic gas when 6urned or exposetl to high teraeratures. NOTE: II eilher ol ihe above situetions exist, it is recommended ihat a vented syslem with a combustion air inlet be usetl. • Do not operate in the umented motle if there is any doubt about the quelity of the insulation in the building. Unvented operation in e building that has an uninsulated rool or that may have uninsu- lated structural members parlially oxposetl to the outdoors may result in wndensation. Thecondensation may be severe enough to drip and/or cause corrosion. • Do not instail in the unvented moda with outside combustion air. When Installing a tubular inlraied heater in Ihe unvented modo, a vent cap must be used and must be installed as illuslratod in Fiaure 2t_ 9�° �heel malal elbow Albe� NEow lo UII plq utlnp I�M nen<airotlo ��nl m�t�l �<nr� �ycW �ppmxlm�INY �v�7 VO• V�n� Cip � � � s�.a�d.e '-�� i.npiv. �nKn ..N c.o �0 9a• .IEaw wlnp Inne non.corro�h� ��al m�itl ¢rew� tp�p0 �pprwlm�l�l� n�ry 130' FIGURE Y7 — Inrert Tarminal pp on Indoor V�nt When e heater is operated without being vented to lhe outdoors, "Top" elearance to combustibles changes to 18 inches (See Paragraph 4). 12 COMBUSTION AIR The burner is equlpped with a cenirif ugal blower to provide combus- tion air. The eir for combustion can come either irom the heated apaca or be piped directly Irom the outsitle. Combustion air should be p(ped from the outside il (1) the pressure in the building is nega- tive, (2) tho atmosphere is dirt laden, (3) the atmosphere contains any si�h:tance ihat will cause toxic gas when passed through a Il:,ne, or (4) the heater is installed in a tightly closed room that does not provide required air lor combustion. 11 dnwinp combu�Uon alr from tha heeted �p�ce, the screened com- bustion air open(ng on the burner box must be kept cleen. Maintain a minimum 12" clearance Irom the combustion air inlet opening. lf the heater is located in a tightly closed room and is not equipped with a combustion air inlet pipe, provision must be matle to supply air lor eombustion to the room. The requirements lor combustion antl ventilation air depend upon whether the unit is located in a conlined or unconfined �pace. An "uncontined space" is defined as a space who,e volume is not less than 50 cubic feet per 7000 BTUH ol the aggregate input rating of all appllances instelled in that space. Untler all conditions, onough air musl be provided to ensu•e ihere will not be a negative pressure condition wilhin the equipmenl room or space. A positive seal mucl � ,c;��g�� cv.a. � � ,�� lt �� .� ,� be made in all return-air connections and ducts. Even e"alipAt" Is�k can r,reale a negative pressure condition in a confined epece end alfect combustion. FIG. 22 ConllnetlSpe•e: ❑i A �p¢� who�e rolume �� I�u IAa� 50 cuble leal qr 100o BTUH ol Ihe In�tallad appllenca �� Inpul ratinp. � m �•'_'_�:i cawr�x�o s.,tt m ` """ia �u nuc ros�an unit in confined space without providing wall opanings leading to and Irom thls space. Provida adequate openings near Iloar and ceiling lor venlilation and air lor combustion, as shown tn Fig. 22 depending on combustlon air sourca as noted below. Add lotal BTUH ol all appliances in the eonfinod spaee and divide by figures be�ow for square Inch free area siza ol each (top and bottom) opening. 7. Alr Irom Inslde building — openings 1 square inch 6;e area per 1000 BTUH. Never less than 100 square inches Irree area lor each opening. See (1) in Figure 22 above. 2. Alr Irom oulslde througb duct — openings 1 squere inch free area per 2000 BTUH. See (21 in Figura 22 abova. 3. Air dlrect }rom outsida — openings 1 square inch Iree area per 4000 BTUH. See (3) fn Figure 22 abovo. NOTE: For further detail on supplying combustion air to confined space, see National Fuel Gas Code ANSI Z223.1 (lalest edilion). If directly piped oulslde eombustion alr is requlred, the burner/con- Irol box is deslgned to accommodate attachment of a•t" diameter inlet air pipe. For outside combustlon air, use optional inlel air kit, Option DE2. Follow the insiruclions included with the kil. The inlel air pipe should be 4" diameter pipe ol a non-corroding maierial. The meximum len�th u( I�a iniel air pipe must not ezceed Ihe length shawn In ihe Combus- tlon Air Inlet Length Table. If the inlet air pipe passes through moisture- latlen air, Insulatlon or doubie•wall tubing may be needed lo prevent contlensation on ihe outside ol lhe pipe. Use Ihe combustlon alr inlet cap supplied with Ihe optlon kil. A diMerent type o( combustlon air inlet cap could cause nuisance problems and/or unsafe opereling condit(ons. �rw�� n�uM Hea;arLenyth Ma:lrm Inlet Pipe Size (Slralghl TuDes) Lenqti 50 20/25I30 75 20/25/30/35/40 BO /t O ioo aor�s�aaas�so Smoolh 125 40/a5/50 Well 150 50/55760 80 ft tOh 5h �on sn - [W20/30135/40 10 fl WA N/A orrupated 1W 30q5/40l45/50 ar 125 a0/45/50 Fknhle �`� 50I55f60 30 fl N/p wq Q Assumas Ihe uso ol t�ree leet ol llexible II the air inlet terminal is located adjacent to Ihe exhaust terminal, the terminals must be separated by a minimum distance of �hree feet. The only exception is when the air inlet is localed directly below Ihe horizontal vent cap, The required clearance between an eir inlet lerminal located Airectly below ihe vent cap is 18 inches as illustreted in Figure 158. See Figures 18B and 19B in Pa�egraph 11 lor Illustra- tions end clearance requirements ol an air inlet lerminal locate� adjaceN to the heater vent terminal. Page 15