SRP WTH Series Installation, Operation And Service Instructions
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SRP WTH Series Installation, Operation And Service Instructions

Single stage commercial heater
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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.
OWNER
Retain this Manual & ensure available for Service.
Improper installation, adjustment, alteration, service
or maintenance can cause injury, death or property
damage.
Read the installation, operation and service
instructions thoroughly before installing or servicing
this equipment.
Series WTH
Installation, Operation and Service Instructions
INFRARED HEATERS
Canada:
563 Barton Street, Stoney Creek, Ontario L8E 5S1
USA:
315 N Madison Street, Fortville, IN 46040
www.superiorradiant.com
Page 1
COMMERCIAL HEATER
FOR YOUR SAFETY
Do not store or use flammable vapors and liquids in the
vicinity of this or any other appliance.
If you smell gas:
1. Open windows
2. Don't touch electrical switches
3. Extinguish any open flame
4. Immediately call your gas supplier
INSTALLER
Provide
Manual
to
Owner
installation!
Read and thoroughly understand these Instructions
before attempting any installation
SERIES
WTH
Single Stage
upon
completion
of
LT105 Feb. 2019

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Summary of Contents for SRP WTH Series

  • Page 1 Installation, Operation and Service Instructions INFRARED HEATERS SERIES Single Stage COMMERCIAL HEATER WARNING FOR YOUR SAFETY Improper installation, adjustment, alteration, service Do not store or use flammable vapors and liquids in the or maintenance can cause property damage, injury vicinity of this or any other appliance. or death.
  • Page 2 CAUTION: FIRE OR EXPLOSION HAZARD Maintain clearance to combustible materials as further specified in this manual. Failure to do so could result in a serious fire hazard. Heaters should not be located in hazardous atmospheres containing flammable vapors or combustible dusts. Signs should be provided in storage areas specifying maximum safe stacking height.

  • Page 3: Table Of Contents

    ONTENTS INTRODUCTION ..................................4 ..................................4 NSTALLATION ODES GENERAL SPECIFICATIONS ..............................5 ....................................5 UPPLY .................................... 5 LECTRIC UPPLY ..............................5 LUE AND UTSIDE ONNECTION DIMENSIONAL CHARTS ................................6 CONFIGURATIONS .................................. 7 CLEARANCE TO COMBUSTIBLES ............................. 8 INSTALLATION – STANDARD HEAT EXCHANGER ........................11 ................................

  • Page 4: Introduction

    Only personnel who have been trained and understand all applicable codes should undertake the installation. SRP Representatives are Factory Certified in the service and application of this equipment and can be called on for helpful suggestions about installation.

  • Page 5: General Specifications

    Gas Supply Lines Gas supply pipe sizing must be in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the USA and CSA B149.1 and B149.2 Installation Codes in Canada. A 1/8” NPT plugged tap must be installed in the gas line connection immediately upstream of the burner farthest from the gas supply meter to allow checking of system gas pressure.

  • Page 6: Dimensional Charts

    Dimensional Charts Heat Exchanger Figure 1: Overall Dimensional Information Figure 2: Component Dimensional Information Series WTH Page 6 LT105 Feb. 2019...

  • Page 7: Configurations

    Configurations Table 1: Configuration Information Heat Exchanger Length ft. (m) Model Rate Baffle * Special Configurations (BTU/Hr) ft.(m) available – see below Minimum Maximum WTH-40 40,000 10' (3m) 20' (6m) 6' (1.8m) WTH-60 60,000 20' (6m) 30' (9m) 6' (1.8m) WTH-80 80,000 30' (9m)

  • Page 8: Clearance To Combustibles

    Clearance to Combustibles A general clearance of 18 (0.5 m) in every direction is recommended for servicing only around each Burner and air supply (at the far end of each radiant tube). Also, to ensure adequate air flow in and around the Heating System. In addition to this it is very important to observe the minimum clearance to combustibles at all times to avoid any possibility of property damage or personal injury.
  • Page 9 Table 2: Minimum Clearance to Combustibles Inches (cm) Model No.: WTH Reflector Configurations (cm) Horizontal 2(5) 2(5) 2(5) 2(5) 4(10) 4(10) 6(15) 6(15) 18(46) 25(63) 26(66) 30(76) 33(84) 36(91) 40(102) 44(46) 45(114) 58(147) 62(157) 67(170) 71(180) 74(188) 78(198) 80(203) 18(46) 25(63) 26(66) 30(76)
  • Page 10 Model No.: WTH Reflector Configurations In (cm) U-Tube, Horizontal 2(5) 2(5) 2(5) 4(10) 4(10) 6(15) 6(15) 25(64) 28(71) 30(76) 34(86) 37(94) 40(102) 45(114) 59(150) 62(157) 71(180) 74(188) 76(193) 78(198) 82(208) 22(56) 26(66) 30(76) 33(66) 36(84) 40(102) 44(112) U-Tube, Opposite 45° 4(10) 4(10) 4(10)

  • Page 11: Installation - Standard Heat Exchanger

    Suspension mechanism must allow for lateral tubing expansion. A minimum 12" length welded link chain with a working load limit of at least 200 lbs. is recommended (refer to Figure 4 for more details). SRP recommends and make available “quick links” for connecting chain. If any open ended turnbuckles are used, the open ends must be closed to avoid unhooking chain with inadvertent contact.
  • Page 12 Figure 4: Suspension Mechanism  Install the tube and reflector support hanger on the chain with Quick Links or ‘S’ hooks refer to Figure 4 & Figure 5 Figure 5: Typical Hanging Points  Place the first (flanged, aluminized) tube in the first two hangers (Figure 6). Be sure the flange is toward the intended burner location.

  • Page 13: Tube Installation

    TUBE INSTALLATION  Always use all the hangers supplied. The combustion tube (first tube) utilizes the flange plus one hanger for support and thereafter 1 hanger section. The reflector brace should be installed 6” – 12” from burner. Also the tube weld seam must face down, refer to Figure 6 for more details.
  • Page 14 Figure 7: Installation of Heat Exchanger Tube and Coupling Note: For all coupling joints, ensure that the tube joint is in the center of the coupling length, and that the overlap joint of the coupling is above the centerline of the tube. Also ensure that the weld seam on ALL tubes is facing down.

  • Page 15: Heater And Baffle Installation

    HEATER AND BAFFLE INSTALLATION  Locate the burner gasket provided, bolt the burner in place on the tube flange with provided hardware. Burner must never be installed in a tilted position. The sense electrode of the burner cup should be in the 12 o’clock position (Figure 9) Figure 9: Burner Gasket Installation ...
  • Page 16 Figure 10: Baffle Installation  A general overall view of the tubes and reflector hangers are shown in Figure 11 below Figure 11: Overall view of Tubes and Reflector Hangers Series WTH Page 16 LT105 Feb. 2019...

  • Page 17: Reflector Installation

    REFLECTOR INSTALLATION  Slide a reflector section into place within the support hanger, (Figure 12). Figure 12: Reflector Installation  Install reflector support brackets, one at each reflector overlap position, and one in the middle of each 10' reflector length. Figure 13 shows the installation of the reflector support bracket. Figure 13: Reflector Support Bracket Installation Note: Reflectors should overlap adjacent reflectors minimum 4".
  • Page 18 Figure 14: Reflector Overlap Illustration  Secure every second reflector overlap together with a minimum of 2 - #8 x 3/8" long screws (not supplied), and secure reflector to the reflector bracket at this point by tightening down #8 x 1¼" screws supplied with reflector brackets (Figure 15).
  • Page 19  Install End Cap as shown in Figure 4 and Figure 16 Figure 16: Reflector End Cap Installation Series WTH Page 19 LT105 Feb. 2019...

  • Page 20: Elbow And "U-Tube" Installation

    ELBOW AND “U-TUBE” INSTALLATION  If required by the heater layout, install 90° elbows or U-tube where indicated. Refer to Figure 17 for details. Note: Elbows or U-tubes are typically installed without reflectors. To reduce the above clearance to combustibles distance use miter reflectors (see Figure 18) and refer to Clearance to Combustibles information. Figure 17: 90°...

  • Page 21: Side Reflectors & Bottom Shields

    SIDE REFLECTORS & BOTTOM SHIELDS  If used, install side shields (reflectors) and/or bottom shield as required. Refer to Figure 18 and Figure 19 for details.  Side shields are 124" long. Fasten one side shield per reflector with #8 x 3/8" screws. Use three side shield brackets per side shield.

  • Page 22: Bottom Shield Reflector Installation

    BOTTOM SHIELD REFLECTOR INSTALLATION  Bottom shields need not overlap. Each 5' section is held with two support brackets (see Figure 19). Figure 19: Bottom Shield Installation Series WTH Page 22 LT105 Feb. 2019...

  • Page 23: Installation - Premium Heat Exchanger

    Suspension mechanism must allow for lateral tubing expansion. A minimum 12" length welded link chain with a working load limit of at least 200 lbs. is recommended (refer to Figure 21 for more details). SRP recommends and make available “quick links” for connecting chain. If any open ended turnbuckles are used, the open ends must be closed to avoid unhooking chain with inadvertent contact.
  • Page 24 Figure 21: Suspension Mechanism  Install the tube and reflector support hanger on the chain with “Quick Links” refer to Figure 21 & Figure 22. Figure 22: Typical Hanging Points  Place the first (flanged, aluminized) tube in the first two hangers (Figure 23). Be sure the flange is toward the intended burner location.

  • Page 25: Tube Installation

    TUBE INSTALLATION  Always use all the hangers supplied. As a rule the combustion tube (first tube) utilizes 2 hangers and thereafter 1 hanger per 10' section. It is required that the first hanging point be 3” to 6” from the burner mounting flange, and tube weld seam must face down, refer to Figure 23 for more details.
  • Page 26  Tighten the cradle loops of the first hanger with the “J” Bolt found in the burner box, to snugly hold the combustion tube from rotating see Figure 25. Note: For all coupling joints, ensure that the tube joint is in the center of the coupling length, and that the overlap joint of the coupling is above the centerline of the tube.

  • Page 27: Heater And Baffle Installation

    HEATER AND BAFFLE INSTALLATION  Locate the burner gasket provided, bolt the burner in place on the tube flange with provided hardware. Burner must never be installed in a tilted position. The sense electrode of the burner cup should be in the 12 o’clock position (Figure 26) Figure 26: Burner Gasket Installation ...
  • Page 28 Figure 27: Baffle Installation  A general overall view of the tubes and reflector hangers are shown in Figure 28 below. Figure 28: Overall view of Tubes and Reflector Hangers Series WTH Page 28 LT105 Feb. 2019...

  • Page 29: Reflector Installation

    REFLECTOR INSTALLATION  Slide a reflector section into place within the support hanger, (Figure 29). Figure 29: Reflector Installation  Install reflector support brackets, one at each reflector overlap position, and one in the middle of each 10' reflector length. Figure 30 shows the installation of the reflector support bracket. Figure 30: Reflector Support Bracket Installation Note: Reflectors should overlap adjacent reflectors minimum 4".
  • Page 30 Figure 31: Reflector Overlap Illustration  Secure every second reflector overlap together with a minimum of 2 - #8 x 3/8" long screws (not supplied), and secure reflector to the reflector bracket at this point by tightening down #8 x 1¼" screws supplied with reflector brackets (Figure 32).
  • Page 31 Figure 32: Reflector Supports Installation and Reflector Overlap  Install End Cap as shown in Figure 33. Figure 33: Reflector End Cap Installation Series WTH Page 31 LT105 Feb. 2019...

  • Page 32: Elbow And "U-Tube" Installation

    ELBOW AND “U-TUBE” INSTALLATION  If required by the heater layout, install 90° elbows or U-tube where indicated. Refer to Figure 34 for details. Note: Elbows or U-tubes are typically installed without reflectors. To reduce the above clearance to combustibles distance use miter reflectors (see Figure 35) and refer to Clearance to Combustibles information.

  • Page 33: Mitered Reflector Installation

    MITERED REFLECTOR INSTALLATION  If used, install the Mitered Reflector as shown below (Figure 35). Figure 35: Mitered Reflector Installation Series WTH Page 33 LT105 Feb. 2019...

  • Page 34: Side Reflectors & Bottom Shields

    SIDE REFLECTORS & BOTTOM SHIELDS  If used, install side shields (reflectors) and/or bottom shield as required. Refer to Figure 36 and Figure 37 for details.  Side shields are 124" (315cm) long. Fasten one side shield per reflector with #8 x 3/8" screws. Use three side shield brackets per side shield.

  • Page 35: Bottom Shield Reflector Installation

    BOTTOM SHIELD REFLECTOR INSTALLATION  Bottom shields need not overlap. Each 5' section is held with two support brackets (see Figure 37). Figure 37: Bottom Shield Installation Series WTH Page 35 LT105 Feb. 2019...

  • Page 36: Deco-Grille (Optional)

    DECO-GRILLE (OPTIONAL) Optional Deco-Grille is approved when using premium heat exhanger only. It can be installed either directly to the heater reflector or as part of a T-Bar installation where the heater is above the ceiling structure. Refer to Figure 38 and Figure 39 below for details.

  • Page 37: Venting / Combustion Air Ducting

    Venting / Combustion Air Ducting General Requirements  Refer to the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) in the USA and CSA B149.1 Installation Codes in Canada, as well as all local requirements for general venting guidance.  Series WTH Infrared Heaters may be installed vented or unvented.

  • Page 38: Vented Operation

    650°F [343°C]. Prior to placing the heater in operation conduct a leak test with heater running using a soap solution.  When venting through combustible walls, use approved vent terminal Tjernlund VH1-4, or SRP supplied deflector vent terminal with an approved insulating thimble. ...
  • Page 39 Common Vertical Venting.  Common vent sizing information is defined in the appropriate gas installation code (Refer to ANSI Z223.1 and CSA B149.1 for sizes and installation information).  Connection locations to the common vent should be offset to avoid pressure interferences between heaters, refer to ANSI Z223.1 and CSA B149.1.

  • Page 40: Combustion Air Supply (Optional)

    Combustion Air Supply (Optional)  An outside combustion air supply is strongly recommended if the building space encloses a negative pressure due to exhaust etc. or if the building contains materials which would expose the heater to halogenated hydrocarbon atmospheres. ...

  • Page 41: Gas Piping

    Gas Piping General Requirements  The gas meter and service must be sufficiently large to supply gas to the connected building gas load including the heating equipment and any other gas fired equipment. Additionally, the gas distribution piping must be designed according to local and national ordinances.

  • Page 42: Electrical Wiring

    Electrical Wiring Heaters are normally controlled by line voltage (120V) or low voltage (24V) thermostats. They are both wired directly. In all cases, heaters must be grounded in accordance with the National Electric Code, ANSI/NFPA 70 in the USA, and the Canadian Electric Code, CSA C22.1 in Canada, and must comply with all local requirements. Heaters may also be controlled with a manual line switch or timer switch in place of the thermostat.

  • Page 43: Burner Operation

    Burner Operation Starting Sequence of Operation  Turn the thermostat up. When the thermostat calls for heat, the blower motor will energize.  When the motor approaches nominal running RPM, the air-proving switch closes and activates the ignition module.  The ignition module, after a pre-purge period of approximately 30 seconds, energizes the igniter.

  • Page 44: Installation Checklist

    Installation Checklist Did you install the first hanger no more than 8 inches from the burner and tighten with the “J” bolt? (“J” bolt only required for the first hanger). Is the weld seam facing down? Is the tube system levelled? Did you mount the tube couplings with the band clamp lock bolts oriented at the 10 o’clock or 2 o’clock position? Did you robustly tighten the band clamps on the tube couplings? Recommended method is to alternate...

  • Page 45: Troubleshooting

    Troubleshooting Blower Motor Fails to Run  Is the thermostat calling for heat? Is there 115V at the burner receptacle?  Check blower side door for seal. Repair as necessary.  Check blower for obstructions. Replace blower if necessary. No Gas Supply ...
  • Page 46 Troubleshooting Chart Series WTH Page 46 LT105 Feb. 2019...

  • Page 47: Replacement Parts

    Replacement Parts ITEM PART # DESCRIPTION ITEM PART # DESCRIPTION CE057 INDICATOR LIGHT UG001P BURNER CUP CE266 IGNITION MODULE UG007 BURNER CUP ASSEMBLY (C/W ELECTRODES) CG142 HONEYWELL VALVE TRAIN REPLACEMENT KIT - NAT. CH011 SIGHT GLASS ASSEMBLY CG143 HONEYWELL VALVE TRAIN REPLACEMENT KIT - LPG. CE020 AIR SWITCH - MODELS - 40,000 &...

  • Page 48: Warranty

    Warranty SERIES WTH INFRARED HEATERS WARRANTY The Manufacturer warrants to the original owner that the product will be free of defects in material and workmanship. For the Series WTH, the warranty for all components is limited to 24 months from the date of installation.

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