ASSEMBLY INSTRUCTIONS - NXS SERIES OWNER / INSTALLER: For your safety this manual must be carefully and thoroughly read and understood before installing, operating or servicing this heater. INFRARED RADIANT TUBE HEATER Single and Two Stage Pull Through System (Negative Pressure) Models: NXS SERIES: (50, 85, 110, 145, 175, 200) (N5/L5) or (N7/L7)!INSTALLER: This manual is the property of the owner. Please present this manual to the owner when you leave the job site. WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury or death. Read the installation, operation and maintenance instructions thoroughly before installing or servicing this equipment. IF YOU SMELL GAS: FOR YOUR SAFETY DO NOT try to light any appliance. DO NOT touch any electrical switch; DO NOT use any telephone in your building. IMMEDIATELY call your gas supplier from a neighbor's telephone. Follow the gas supplier's instructions. If you cannot reach your gas supplier, call the fire department. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.!important: SAVE THIS MANUAL FOR FUTURE REFERENCE. SPACE-RAY Post Office Box 36485 (28236) 305 Doggett Street (28203) Charlotte, North Carolina Phone (704) 372-6391 Fax (704) 332-5843 www.spaceray.com email: info@spaceray.com Feb 2015
TABLE OF CONTENTS SECTION DESCRIPTION PAGE 1.0) Typical Suspension Methods... 2 2.0) NXS SERIES SPECIFICATIONS... 3 3.0) NXS SERIES PACKING LIST... 3 4.0) NXS SERIES DIMENSIONS... 10 5.0) NXS SERIES - HEATER ASSEMBLY OVERVIEW... 11 6.0) NXS SERIES - HEATER ASSEMBLY... 17 7.0) NXS SERIES - ATTACHING CONTROL BOX ASSEMBLY... 27 8.0) NXS SERIES - ATTACHING DRAFT INDUCER ASSEMBLY... 28 9.0) NXS SERIES - MULTIPLE DRAFT INDUCER POSITIONS... 29 This heater complies with ANSI Z83.20 (current standard) and CSA 2.34. Copies of the National Fuel Gas Code (ANSI Z223.1-latest edition) are available from the CSA at 8501 East Pleasant Valley Road, Cleveland, Ohio 44131 or 55 Scarsdale Road, Don Mills, Ontario M3B 2R3. All NFPA codes are available from the National Fire Protection Association, Batterymarch Park, Quincy, Massachusetts 02269. This product can expose you to chemicals including ceramic fibers, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov. Jan 2014-1-
1.0) TYPICAL SUSPENSION METHODS Various means of suspending the heater can be used. See the following drawings for typical examples. 1. Use only noncombustible materials for suspending hangers and brackets. 2. A minimum No. 2 chain with a working load limit of 115 lbs. is required. 3. Turnbuckles can be used with chains to allow leveling of the heater. All S hooks and eye bolts must be manually crimped closed by the installer. 4. When using rigid means for heater suspension (rod, flat bar, etc.) provide sufficient lengths or swing joints to compensate for expansion. See Figures b and c. 5. Heaters subject to vibration must be provided with vibration isolating hangers. 6. Heaters must not be supported by gas or electric supply lines and must be suspended from a permanent structure with adequate load capacity. Space-Ray recommends that the body sections be suspended using chains with turnbuckles. This will allow slight adjustments after assembly and heater expansion/ contraction during operation. If a trapeze method is used for tube support/hanger brackets (shown below), the minimum chain length for the two connecting chains is 36 to minimize any vibration that might be generated by the draft inducer assembly. If these chains must be less than 36, then do not use the trapeze method and, instead, use individual chains on each tube support/hanger bracket. Jan 2014-2-
2.0) NXS SERIES SPECIFICATIONS Btu/hr (2 stage) Btu/hr Flue Restrictor Orifice Size Minimum * Mounting Height Model No. High Input Low Input Plate I.D. & Part # Natural Gas Propane Gas @ Horizontal Turbulator Qty. NXS 50 50,000 32,500 1 #42741040 #29 (0.136) #47 (0.079) 12 ft. 5 NXS 85 85,000 50,000 1-7/16 #42741010 4.2mm (0.165) 2.5mm (0.098) 13 ft. 7 NXS 110 110,000 71,500 1-1/2 #42741050 5.0mm (0.197) #32 (0.116) 15 ft. 7 NXS 145 145,000 88,500 1-7/8 #42741080 5.7mm (0.224) #29 (0.136) 18 ft. 9 NXS 175 175,000 114,000 2-3/8 #42741130 E (0.250) #26 (0.147) 19 ft. 3 NXS 200 200,000 125,000 3-1/4 #30215509 G (0.261) 5/32 (0.156) 21 ft. 2 * This chart is intended as a guide only, as heaters may be mounted at various heights. MOUNT HEATERS AS HIGH AS POSSIBLE. Minimums are shown as a guideline for human comfort and uniform energy distribution for complete building applications. Please consult your local Space-Ray Representative for a detailed analysis of your particular infrared heating requirements. Model Identification: Control Option Suffix Gas Type Description N5 Natural Single Stage Gas Valve Single Stage Input L5 Propane Single Stage Gas Valve Single Stage Input N7 Natural Two Stage Gas Valve Modulating Input High/Low Fire L7 Propane Two Stage Gas Valve Modulating Input High/Low Fire Gas Pipe Connection Tube Diameter Flue Connection Fresh Air Connection Electrical Supply Current Rating ½ MPT (Male) 4 4 Round 4 Round 120 Volt, 60Hz, 1 Phase 2.6 Amp Fuse Rating: In-line: 2 Amp 250V (for 24V Circuit) Ignition System (direct spark): 30 second pre-purge period 3.0) NXS SERIES PACKING LISTS Control/Draft Inducer Package Part Description QTY Control Box Assembly... 1 Draft Inducer & Junction Box Assembly w/flue Restrictor Plate... 1 4 Starting Collar (#40504020)... 1 Control Fastener Kit (#42907010)... 1 Containing: #8-32 Screws & Nuts (#02166010 & #02127030)... 2 ¼ - 20 Locknuts (#02167010)... 6 Tube Flange Gasket (#42921000)... 2 Installation & Operation Instructions Part A (#43343340)... 1 Installation & Operation Instructions Part B (#43343341)... 1 Installation & Operation Instructions General (#43343342)... 1 Gas connector, 5/8 OD x 36 (#30302360)... 1 Turbulator 24 Long (#44152240) See chart above for required quantities.... - NXS 50-200 SERIES CONTROL/DRAFT INDUCER PACKAGE NUMBERS SINGLE STAGE CONTROLS TWO STAGE CONTROLS MODEL NO. PART NO. GAS TYPE MODEL NO. PART NO. GAS TYPE NXS 50-N5 #44480010 NXS 50-L5.#44480020 NXS 85-N5...#44480030 NXS 85-L5.#44480040 NATURAL PROPANE NATURAL PROPANE NXS 50-N7.#44480510 NXS 50-L7.#44480520 NXS 85-N7... #44480530 NXS 85-L7.#44480540 NATURAL PROPANE NATURAL PROPANE NXS 110-N5... #44480050 NXS 110-L5..#44480060 NATURAL PROPANE Jan 2014-3- NXS 110-N7... #44480550 NXS 110-L7..#44480560 NATURAL PROPANE
SINGLE STAGE CONTROLS TWO STAGE CONTROLS MODEL NO. PART NO. GAS TYPE MODEL NO. PART NO. GAS TYPE NXS 145-N5...#44480070 NXS 145-L5..#44480080 NATURAL PROPANE NXS 145-N7... #44480570 NXS 145-L7..#44480580 NATURAL PROPANE NXS 175-N5...#44480090 NXS 175-L5. #44480100 NXS 200-N5...#44480110 NXS 200-L5.#44480120 NATURAL PROPANE NATURAL PROPANE NXS 175-N7... #44480590 NXS 175-L7. #44480600 NXS 200-N7... #44480610 NXS 200-L7.#44480620 NATURAL PROPANE NATURAL PROPANE NXS50 Body Packing List (complete system) (Package Part Number is indicated on the outside of each corresponding carton.) Systems Body Package Descriptions 15 Ft. System 15 Ft. Pkg. 44134060 Ref. No. Part No. Each Body Package Includes: Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912100 5 Ft. Steel Tube with (one) 12 Radial Hole Flange (ALC) 1 3 43319100 Reflector, Main Body 13 Wide x 119.5 Long 2 4 43319050 Reflector, Main Body 13 Wide x 59.5 Long 2 5 43320050 Reflector End Cap - Notched 2 6 44015252 Tube Flange Assembly 1 42907400 Hardware kit NXS50 comprising: 7 43318100 Tube Hanger/Support Bracket - 13 3 8 42873000 U Bolt Clamp-4"OD 3 9 42921000 Gasket, Tube 1 10 44441000 Side Panel Holder Bracket 6 11 44436130 Reflector Spacer Bracket 3 12 44437011 Side Panel 1 3/4 2 12 44437061 Side Panel 6 1/4 2 42907710 Side Panel Kit NXS50 comprising: 12 44437810 Side Panel 81 4 42907451 Fastener Kit-NXS 50 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 6 02127120 Nut, Hex 5/16-18 SS 6 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 13 42769020 Clamp, Reflector Locking 4 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 40 Jan 2014-4-
NXS85 Body Packing List (complete system) (Package Part Number is indicated on the outside of each corresponding carton.) Systems Body Package Descriptions 20 Ft. System 20 Ft. Pkg. 44135500 Ref. No. Part No. Each Body Package Includes: Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912180 10 Ft. Steel Tube with (one) 12 Radial Hole Flanges (ALC) 1 3 43319100 Reflector, Main Body 13 Wide x 119.5 Long 4 4 43320050 Reflector End Cap - Notched 2 5 44015252 Tube Flange Assembly 1 42907410 Hardware kit NXS85 comprising: 6 43318100 Tube Hanger/Support Bracket - 13 4 7 42873000 U Bolt Clamp-4"OD 4 8 42921000 Gasket, Tube 1 9 44441000 Side Panel Holder Bracket 8 10 44436130 Reflector Spacer Bracket 4 11 44437011 Side Panel 1 3/4 2 11 44437030 Side Panel 3 7/8 2 42907720 Side Panel Kit NXS85 comprising: 11 44437600 Side Panel 60 2 11 44437810 Side Panel 81 4 42907450 Fastener Kit-NXS 85 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 8 02127120 Nut, Hex 5/16-18 SS 8 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 12 42769020 Clamp, Reflector Locking 4 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 40 Jan 2014-5-
NXS110 Body Packing List (complete system) (Package Part Number is indicated on the outside of each corresponding carton.) Systems Body Package Descriptions 30 Ft. System 30 Ft. Pkg. 44136500 Ref. No. Part No. Each Body Package Includes: Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912180 10 Ft. Steel Tube with 12 Radial Hole Flange (ALC) 1 3 41932100 10 Ft. Steel Tube less Flanges (ALC) 1 4 43319100 Reflector, Main Body 13 Wide x 119.5 Long 6 5 43319020 Reflector, Main Body 13 Wide x 24 Long 2 6 30462980 Tube Coupling 1 7 43320050 Reflector End Cap - Notched 2 8 44015252 Tube Flange Assembly 1 42907420 Hardware kit NXS110 comprising: 9 43318100 Tube Hanger/Support Bracket - 13 6 10 42873000 U Bolt Clamp-4"OD 6 11 42921000 Gasket, Tube 1 12 44441000 Side Panel Holder Bracket 12 13 44436130 Reflector Spacer Bracket 6 14 44437011 Side Panel 1 3/4 2 14 44437030 Side Panel 3 7/8 2 14 44437130 Side Panel 13 2 42907730 Side Panel Kit NXS110 comprising: 14 44437360 Side Panel 36 2 14 44437960 Side Panel 96 6 42907460 Fastener Kit-NXS110 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 12 02127120 Nut, Hex 5/16-18 SS 12 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 15 42769020 Clamp, Reflector Locking 8 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 67 Jan 2014-6-
NXS145 Body Packing List (complete system) (Package Part Number is indicated on the outside of each corresponding carton.) Systems 40 Ft. System Body Package Descriptions 20 Ft. Pkg. 1 of 2 44135520 20Ft. Pkg. 2 of 2 44135530 Ref. No. Part No. Each Body Package Includes: Qty. Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912180 10 Ft. Steel Tube with 12 Radial Hole Flange (ALC) 1 3 41932100 10 Ft. Steel Tube less Flanges (ALC) 2 4 43319100 Reflector, Main Body 13 Wide x 119.5 Long 5 3 5 43319020 Reflector, Main Body 13 Wide x 24 Long 2 6 30462980 Tube Coupling 2 7 43320050 Reflector End Cap - Notched 2 8 44015252 Tube Flange Assembly 1 42907430 Hardware kit NXS145 comprising: 9 43318100 Tube Hanger/Support Bracket - 13 7 10 42873000 U Bolt Clamp-4"OD 7 11 42921000 Gasket, Tube 1 12 44441000 Side Panel Holder Bracket 14 13 44436130 Reflector Spacer Bracket 7 14 44437011 Side Panel 1 3/4 4 14 44437130 Side Panel 13 2 42907740 Side Panel Kit NXS145 comprising: 14 44437600 Side Panel 60 2 14 44437960 Side Panel 96 8 42907470 Fastener Kit-NXS145 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 14 02127120 Nut, Hex 5/16-18 SS 14 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 15 42769020 Clamp, Reflector Locking 10 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 80 Jan 2014-7-
NXS175 Body Packing List (complete system) (Package Part Number is indicated on the outside of each corresponding carton.) Systems 50 Ft. System Body Package Descriptions 20 Ft. Pkg. 1 of 2 44136510 30 Ft. Pkg. 2 of 2 44135510 Ref. No. Part No. Each Body Package Includes: Qty. Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912180 10 Ft. Steel Tube with 12 Radial Hole Flange (ALC) 1 3 41932100 10 Ft. Steel Tube less Flanges (ALC) 3 4 43319100 Reflector, Main Body 13 Wide x 119.5 Long 6 4 5 43319020 Reflector, Main Body 13 Wide x 24 Long 2 6 30462980 Tube Coupling 3 7 43320050 Reflector End Cap - Notched 2 8 44015252 Tube Flange Assembly 1 42907440 Hardware kit NXS175 comprising: 9 43318100 Tube Hanger/Support Bracket - 13 8 10 42873000 U Bolt Clamp-4"OD 8 11 42921000 Gasket, Tube 1 12 44441000 Side Panel Holder Bracket 16 13 44436130 Reflector Spacer Bracket 8 14 44437011 Side Panel 1 3/4 4 14 44437130 Side Panel 13 2 42907760 Side Panel Kit NXS175 comprising: 14 44437810 Side Panel 81 2 14 44437960 Side Panel 96 10 42907480 Fastener Kit - NXS175 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 16 02127120 Nut, Hex 5/16-18 SS 16 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 15 42769020 Clamp, Reflector Locking 12 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 90 Jan 2014-8-
NXS200 Body Packing List (Complete System) (Package Part Number is indicated on the outside of each corresponding carton.) Systems 60 Ft. System Body Package Descriptions 30 Ft. Pkg. 1 of 2 44136520 30 Ft. Pkg. 2 of 2 44136530 Ref. No. Part No. Each Body Package Includes: Qty. Qty. 1 42912179 10 Ft. Steel Tube with (two) 6 Hole Flanges (ATC) 1 2 42912180 10 Ft. Steel Tube with 12 Radial Hole Flange (ALC) 1 3 41932100 10 Ft. Steel Tube less Flanges (ALC) 1 3 4 43319100 Reflector, Main Body 13 Wide x 119.5 Long 6 6 5 43319030 Reflector, Main Body 13 Wide x 36 Long 2 6 30462980 Tube Coupling 4 7 43320050 Reflector End Cap - Notched 2 8 44015252 Tube Flange Assembly 1 42907441 Hardware kit NXS200 comprising: 9 43318100 Tube Hanger/Support Bracket - 13 9 10 42873000 U Bolt Clamp-4"OD 9 11 42921000 Gasket, Tube 1 12 44441000 Side Panel Holder Bracket 18 13 44436130 Reflector Spacer Bracket 9 14 44437011 Side Panel 1 3/4 2 14 44437030 Side Panel 3 7/8 2 14 44437220 Side Panel 22 2 42907780 Side Panel Kit NXS200 comprising: 14 44437960 Side Panel 96 7 7 42907481 Fastener Kit-NXS200 comprising: 02125130 Screw, #10-24 x ½ Round Head Machine 18 02127120 Nut, Hex 5/16-18 SS 18 02167019 Nut, Hex ¼-20 Keps Locknut SS 6 02259000 Screw, ¼-20 x 5/8 Hex Washer Head Machine SS 6 15 42769020 Clamp, Reflector Locking 14 02189080 Screw, #10-16 x 5/8 Self-Drill (TEKS) 90 Jan 2014-9-
4.0) NXS SERIES DIMENSIONS Jan 2014-10-
5.0) NXS SERIES - HEATER ASSEMBLY OVERVIEW Jan 2014-11-
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6.0) NXS SERIES HEATER ASSEMBLY During field assembly of the NXS series heater body sections, the recommended procedure is as follows: 1. Before hanging heater sections, first determine the actual layout of the system. See Section 4.0 for complete heater dimensions. Consideration must also be taken for flue pipe, fresh air ducting, gas piping, clearances to combustibles, etc. before hanging heater. 2. Put the suspension in place using proper suspension methods (see Typical Suspension Methods in Section 1.0. 3. Hang each tube section individually. Observe the following requirements. a) DO NOT attach the heater tube sections together on the ground and attempt to hang the entire system. The weight of the individual heater body sections can cause misalignment and damage to the heater. b) DO NOT relocate the tube support/hanger brackets, especially at the control end of the heater. c) For all NXS Models, the first tube section MUST be a 10 ft. (ATC steel) tube with one 6-hole flange which is to mount burner control box. d) For all NXS models, the last tube section MUST be a 10 ft. (ALC steel) tube without a flange at the draft inducer end. A separate tube flange assembly (supplied in body package) is used to mount the draft inducer. e) For all NXS models, the middle section tubes are all 10 ft. (ALC steel) with or without (model dependent) hole flanges. f) Failure to attach the control box to the flange end as indicated above will void the manufacturer s warranty. g) Any S hooks used in suspension should be crimped close. Jan 2014-17-
A. SUSPENSION - SPACING DIMENSIONS - NXS 1. Install the suspension spaced at dimensions shown below and using proper suspension methods (see Typical Suspension Methods in Section 5.0 of Part A.) Jan 2014-18-
B. TYPICAL ASSEMBLY LAYOUTS (with turbulators) - NXS MODEL EMITTER TUBE LENGTH SYSTEM LENGTH 2 Ft. Turbulator (each leg) Sections NXS 50 NXS 85 10 Ft. (2 each) 20 Ft. 7 10 Ft./5 Ft (1 each) 15 Ft. 5 NXS 110 10 Ft. (3 each) 30 Ft. 7 NXS 145 10 Ft. (4 each) 40 Ft. 9 NXS 175 10 Ft. (5 each) 50 Ft. 3 NXS 200 10 Ft. (6 each) 60 Ft. 2 NOTES: 1. In all configurations, the control unit must be connected directly to the ATC steel body section having a 6 hole flange. Jan 2014-19-
C. JOIN TUBE SECTIONS - COUPLING DETAILS (second, third and fourth tube joints only) 1. Join the 10ft tube sections together and secure with tube couplings as follows: The following coupling tightening instructions MUST be followed properly to ensure the integrity of the tube connections. Two #10 self-drilling screws MUST be installed at every coupling as shown in the instructions below. Failure to do so may result in serious injury or property damage. 1) Place the compression coupling over the end of the tube. 2) Use the small hole at the centerline of the coupling to check that the coupling is inserted correctly. 3) Partially tighten the bolt nearest the end of the tube (approximately half closed). 4) Slide the next tube into the coupling. 5) Make sure both tube ends are butted together. 6) Finish tightening both bolts to 40-60 ft. lbs. torque to ensure a complete seal. 7) Use the two Self-drilling screws through the pre-punched holes to secure the tubes in the coupling. 8) Check to ensure that the hardware is completely closed and the band is seated on the reaction block and interference pins as illustrated above. 9) Once all the heater body sections are attached, make sure that the heater system is level. If it is not, slight adjustments can be made using the turnbuckles. (See Typical Suspension Methods in Section 5.0 of Part A.) Important: NEVER reuse a coupling. Always install a new coupling only and torque as per instructions above and the diagrams above. Jan 2014-20-
D. HANGING THE TUBE SECTIONS 1. Space the hanger brackets according to the suspension dimensions above for the first tube section. Note: The distances are measured from center of the holes of each support/hanger bracket. a) Place tubes over the hanger brackets with the welded seam facing down toward the ground. Failure to assemble the tube with the seam facing down will void the manufacturer s warranty. b) Secure the tubes to each support/hanger bracket using U-bolt clamps and 5/16-18 nuts provided. 2. Raise the tube section up to the suspension chain (or other methods), using S hooks to attach the tube support brackets (close S hooks after they are attached to the hanger brackets). Hang each tube section individually. DO NOT attach all of the heater tube sections together on the ground and attempt to hang the entire system. Jan 2014-21-
3. Suspend the hanger bracket for the second section of tube, raise the tube into position and join the tube sections together using ¼-20 screws, locknuts and gasket shown below. Fasten the tube to the hanger bracket. Jan 2014-22-
4. Suspend the remaining hanger brackets for the third, fourth and fifth (model dependent) section of tubes. Raise each tube into position and join them together using tube couplings as described above in Join Tube Sections - Coupling Details. Fasten each tube to the hanger brackets as above. NOTE: The last tube will have a 12 radial hole flange to mount the draft inducer assembly. E. ADD LOWER REFLECTOR 1. Position the lower reflectors over the tube support/hanger brackets. Arrange the reflector panels to the dimensions shown in the table and figures below. The reflectors MUST be positioned in accordance with the dimensions stated because the side panels provided with the heater are designed to cover the entire length of the reflectors and therefore if the location of the reflectors does not match these dimensions then the side panels will not fit. See table and figure below: Model A R1 O1 R2 O2 R3 O3 R4 O4 R5 O5 R6 RO6 R7 NXS 15ft 3 119.5 5.0 59.5 5.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A NXS 20ft 3 119.5 5.0 119.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A NXS 30ft 3 119.5 9.5 119.5 9.5 119.5 9.5 24 N/A N/A N/A N/A N/A N/A NXS 40ft 3 119.5 7.0 119.5 7.0 119.5 7.0 119.5 7.0 24 N/A N/A N/A N/A NXS 50ft 3 119.5 5.5 119.5 5.5 119.5 5.5 119.5 5.5 119.5 5.5 24 N/A N/A NXS 60ft 3 119.5 6.5 119.5 6.5 119.5 6.5 119.5 6.5 119.5 6.5 119.5 6.5 36.0 All Dimensions in inches. Jan 2014-23-
Secure the lower reflector panels to the support brackets using the locking clamps. It is important to only secure the reflectors in the locations shown below. The first and second lower reflectors must be able to move freely at the overlap. a) From the underside of the hanger bracket drive in the sheet metal screw until the tip is just through the reflector panel. b) Position the reflector locking clamp PN 42769020 (from the fastener pack) over the screw. c) Continue to drive the screw until the reflector is secured in place using a low torque driver. d) Repeat this at each hanger bracket specified in figure below. Note: The reflector is NOT clamped at the second and second to last hanger bracket on every model. Jan 2014-24-
F. ATTACH REFLECTOR SPACER BRACKETS 1. Attach the reflector spacer brackets at each tube support/hanger bracket using the #10-24 machine screws supplied in fastener kit. See figure below: G. ADD UPPER REFLECTORS 1. Place the upper reflectors over each of the reflector spacer brackets. Repeat the same reflector positions and overlap dimensions as specified in table above. To align reflectors precisely to the ends of the lower reflector, hold the end cap in place against the lower reflector slide the upper reflector to rest against it. See figure below. Jan 2014-25-
H. ATTACH SIDE PANELS 1. Place side panels over the sides of both reflector panels between each tube support/hanger bracket and at the ends of the heater. See figure below. 2. Secure these in place using the side panel holder brackets and two #10 x ½ sheet metal screws supplied in the fastener kit. See figure below. NOTE: DO NOT screw into the side panels. I. ATTACH REFLECTOR END CAPS 1. Place end reflector caps and secure using screws (supplied in fastener kits) as shown in figure below: Jan 2014-26-
7.0) NXS SERIES - ATTACHING CONTROL BOX ASSEMBLY 1. Attach the control box and gasket to end of tube flange and secure with 1/4-20 locknuts. NOTE: The control box must be mounted to an ATC steel body section having a 6-hole flange. Failure to attach the control box to the flange end as indicated above will void the manufacturer s warranty. 2. A 3/8" connector is located on the left side of the control cabinet to provide strain relief for field wiring to the draft inducer junction box. Refer to Electrical Connections in the general installation and operation instructions for wiring between the control box and the draft inducer. 3. The control box must be mounted with the perforated fresh air plate on top, facing the ceiling. 4. The heater must be mounted horizontally with the control box positioned upright with the lights facing down. Failure to install the control box in an upright position will VOID the manufacturer s warranty. Jan 2014-27-
8.0) NXS SERIES - ATTACHING DRAFT INDUCER ASSEMBLY 1. Slide the draft inducer flange over the end of tube. Rotate the flange until the tightening brackets are in the upright position. Secure the flange by tightening the ¼-20 screw located on the tightening brackets. 2. Attach the draft inducer assembly and gasket to end of the draft inducer flange and secure with 1/4-20 locknuts. A flue restrictor plate is attached to the draft inducer weld studs. DO NOT DISCARD RESTRICTOR PLATE and make sure this remains in place while the draft inducer is being attached to the heater body. NOTE: The draft inducer can be mounted in a vertical, a 45º, or a horizontal position. Refer to the Multiple Draft Inducer Positions section in the instructions. 3. Disconnect the piece of SJO cable (if equipped) from the junction box and discard. This is used only on NXU series heaters. 4. The 3/8" connector used to hold the SJO cable will remain to provide strain relief for field wiring of the control box and the draft inducer. Refer to the Electrical Connections in the general installation and operation instructions. 5. If the heater is to be VENTED to the outside of the building, place the starting collar on the outlet of the draft inducer and secure with the #8-32 screws and nuts. Place the flue pipe directly onto the starting collar, secure with the #8 sheet metal screws, and terminate with an approved vent cap. 5. If the heater is for UNVENTED use, place the exhaust hood (supplied as an accessory) directly onto the outlet of the draft inducer (starting collar is not necessary for unvented use). Secure with the #8 sheet metal screws. The exhaust hood must be mounted only in an upright position and directed toward the reflector body. Jan 2014-28-
9.0) MULTIPLE DRAFT INDUCER POSITIONS The heater must be mounted horizontally. Make sure the long axis of heater is level. Multiple draft inducer positions can also be used as shown in the diagrams. This allows for the desired configuration of flue venting. Regardless of the position chosen, the junction box must remain horizontal as shown. This may be achieved as follows: 1. Remove the three (3) ¼-20 locknuts securing the motor and blower wheel assembly. 2. Pull the motor and blower wheel assembly with the motor plate slightly from the end of the housing studs. Use care not to damage the motor leads. 3. Rotate the junction box assembly to the upright position using the multi-hole mounting bracket. 4. Replace the motor and blower assembly. Tighten the locknuts. 5. Horizontal and 45º draft inducer positions can allow the plastic vacuum air tube to sag. The air tube should be shortened to prevent downward sag that could allow condensation build-up in the tube. Jan 2014-29- A