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• In shops, offices and other sections of aircraft hangars communicating with aircraft storage or servicing areas, heaters shall be installed not less than 8' (2.4 m) above the floor. • Suspended or elevated heaters shall be so located in all spaces of aircraft hangars that they shall not be subject to injury by aircraft, cranes, movable scaffolding or other objects. Provisions shall be made to assure accessibility to suspended heaters for recurrent maintenance purposes. and B149.2: Installation Codes for Gas Burning The heater must be electrically grounded in accordance with the following codes: United States: Refer to National Electrical Code®, ANSI/NFPA-70 - latest revision. Wiring must conform to the most current National Electrical Code®, local ordinances, and any special diagrams furnished. Canada: Refer to Canadian Electrical Code, CSA C22.1 Part 1 - latest revision. 4.4 Electrical The venting must be installed in accordance with the requirements within this manual and the following codes: United States: Refer to NFPA-54/ANSI Z223.1 - latest revision, National Fuel Gas Code. Canada: Refer to CAN/CGA B149.1 and B149.2: Installation Codes for Gas Burning Appliances. 4.5 Venting These heaters are approved for installations up to 2000' (610 m)(US), 4500' (1370 m)(Canada) without modification. Consult factory if US installation is above 2000' (610 m) or Canadian installation is above 4500' (1370 m). 4.6 High Altitude CTHN-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 5: HEATER DESCRIPTIONS 5.1 Unitary vs. Multiburner CTHN-Series burners may be used for unitary heaters or for multiburner systems. Unitary heaters consist of a single burner, a single run of radiant tubing and a single fan assembly. See Page 14, Figure 13 or See Page 17, Figure 16 for details. Multiburner systems consist of more than one burner and more than one run of radiant tubing. The runs of radiant tubing are connected together by manifold tubing. The manifold tubing connects to a single pump that exhausts the flue gases outdoors. See Page 32, Figure 19 through Page 35, Figure 23 for common multiburner system layouts. Since this manual addresses installation of both unitary heaters and multiburner systems, pay close attention to section and figure titles to verify relevance to unitary heaters or multiburner systems. SECTION 6: MAJOR COMPONENTS 9 SECTION 6: MAJOR COMPONENTS FIGURE 11: Major Component Descriptions Tube and Reflector Hanger with Clamp Package Position this hanger no more than 4'' (10 cm) away from the burner assembly. Coupling Assembly with Lock Reflector End Cap Punch out center section to accommodate tube. Tube and Reflector Hanger Suspend system from these hangers. Flex Gas Line with Shut Off Cock Burner Tube Supplied in 10' (3 m) lengths. Burner tube is always the first tube after the burner. Reflector Support Strap & Wire Form Turbulator Turbulator must be installed in the last standard section of tube.Turbulator is only required on the CTHN-40, 60 and 80. For installation, See Page 21, Step 8.8. EP-100 Pump Package - For more information, refer to the EP-100 Installation, Operation and Service Manual (P/N 127201NA). EP-201 Pump Package - For more information, refer to the EP-200 Series Installation, Operation and Service Manual (P/N 127200NA). Fan Assembly EP-300 Series Pump Package - For more information, refer to the EP-300 Series Installation, Operation and Service Manual (P/N 127202NA). Reflector (Aluminum or Stainless Steel) Alternate overlap as shown on Page 15, Figure 14 or on Page 18, Figure 17. Minimum overlap is 6'' (16 cm). Tube Hot rolled or heat treated aluminized tube supplied in 10' (3 m) lengths. Burner with Tube Gasket Must be installed with the flame observation window facing down. Restrictor Plate Used at fan assembly inlet for unitary heaters only. See fan assembly below. CTHN-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL 10 SECTION 7: GENERAL SUSPENSION DETAILS To ensure your safety and comply with the terms of the warranty, all units must be installed in accordance with these instructions. The gas or the electrical supply lines must not be used to support the heater. Do not locate the gas or electric supply lines directly over the path of the flue products from the heater. The heater must be installed in a location that is readily accessible for servicing. The heaters must be installed in accordance with clearances to combustibles as indicated on the rating plate and in this instruction manual. The minimum and maximum gas inlet pressures must be maintained as indicated on the rating plate.Typical installation configurations are shown in Figure 12. FIGURE 12: Critical Hanger Placement % 1"2" 9% #% '% %' ' ' " #:"! 1" !" ! ,"" ! " ,,%, : " - /( ' ;$$ : < "% - ! % #" % "!0 4% "," & ' ( )% * +,-./"$0 1( '! " & ,23 4 $ 5 # $ 6#"'% 7 89:- * $$ " * $ +* $ + "!% '" &! 89:- ,-$4 ./"$0 ;<=4 " '! '> 89/- )$%$ 6% %"! ?"% Description Part Number S-Hook 91907302 Tube/Refle...

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