SRP WTH Series Manuale

Series WTH Page 1 LT105 Feb. 2019

Installation, Operation and Service Instructions

INFRARED HEATERS

SERIES

WTH

Single Stage

COMMERCIAL HEATER

WARNING

FOR YOUR SAFETY

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.

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

OWNER

INSTALLER

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.

Provide Manual to Owner upon completion of

installation!

Read and thoroughly understand these Instructions

before attempting any installation

Canada: 563 Barton Street, Stoney Creek, Ontario L8E 5S1

USA: 315 N Madison Street, Fortville, IN 46040

www.superiorradiant.com

Series WTH Page 2 LT105 Feb. 2019

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.

CAUTION: MECHANICAL HAZARD

This equipment expands and contracts with each operating cycle. The gas connection, suspension

hardware, and the installation itself must safely allow this movement. Failure to do so could result in

serious fire or explosion hazard.

CAUTION: FIRE OR EXPLOSIONS HAZARD

This heater is equipped with an automatic ignition device. Do not attempt to light the burner by hand.

Failure to comply could result in a serious fire and personal injury hazard.

CAUTION: MECHANICAL HAZARD

Do not use high pressure (above ½ psi, 60 mbar) to test the gas supply system with the burners

connected. Failure to do so could result in damage to the burner and its control components requiring

replacement.

CAUTION: SERVICE LIFE RISK

Do not install equipment in atmosphere containing halogenated hydrocarbons or other corrosive

chemicals. Failure to do so may lead to premature equipment failure and invalidation of the warranty.

Additionally, it is recommended that the equipment be installed with a downward slope, away from the

burner. The rate of declination should be ¼” (6mm) in height per 10’ (3m) in length to allow the start-up

condensation to drain.

Series WTH Page 3 LT105 Feb. 2019

CONTENTS

INTRODUCTION...................................................................................................................................................................... 4

INSTALLATION CODES ...................................................................................................................................................................... 4

GENERAL SPECIFICATIONS ..................................................................................................................................................... 5

GAS SUPPLY .................................................................................................................................................................................. 5

ELECTRIC SUPPLY............................................................................................................................................................................ 5

FLUE AND OUTSIDE AIR CONNECTION ................................................................................................................................................ 5

DIMENSIONAL CHARTS .......................................................................................................................................................... 6

CONFIGURATIONS.................................................................................................................................................................. 7

CLEARANCE TO COMBUSTIBLES ............................................................................................................................................. 8

INSTALLATION –STANDARD HEAT EXCHANGER................................................................................................................... 11

INSTALLATION SEQUENCE............................................................................................................................................................... 11

HANGERS INSTALLATION .................................................................................................................................................... 11

TUBE INSTALLATION ........................................................................................................................................................... 13

HEATER AND BAFFLE INSTALLATION .................................................................................................................................. 15

REFLECTOR INSTALLATION.................................................................................................................................................. 17

ELBOW AND “U-TUBE” INSTALLATION ............................................................................................................................... 20

SIDE REFLECTORS & BOTTOM SHIELDS ............................................................................................................................... 21

BOTTOM SHIELD REFLECTOR INSTALLATION ...................................................................................................................... 22

INSTALLATION –PREMIUM HEAT EXCHANGER .................................................................................................................... 23

INSTALLATION SEQUENCE............................................................................................................................................................... 23

HANGERS INSTALLATION .................................................................................................................................................... 23

TUBE INSTALLATION ........................................................................................................................................................... 25

HEATER AND BAFFLE INSTALLATION .................................................................................................................................. 27

REFLECTOR INSTALLATION.................................................................................................................................................. 29

ELBOW AND “U-TUBE” INSTALLATION ............................................................................................................................... 32

MITERED REFLECTOR INSTALLATION .................................................................................................................................. 33

SIDE REFLECTORS & BOTTOM SHIELDS ............................................................................................................................... 34

BOTTOM SHIELD REFLECTOR INSTALLATION ...................................................................................................................... 35

DECO-GRILLE (OPTIONAL) ................................................................................................................................................... 36

VENTING / COMBUSTION AIR DUCTING............................................................................................................................... 37

GENERAL REQUIREMENTS .............................................................................................................................................................. 37

UN-VENTED OPERATION ............................................................................................................................................................... 37

VENTED OPERATION ..................................................................................................................................................................... 38

COMBUSTION AIR SUPPLY (OPTIONAL)............................................................................................................................................. 40

GAS PIPING .......................................................................................................................................................................... 41

ELECTRICAL WIRING ............................................................................................................................................................. 42

BURNER OPERATION............................................................................................................................................................ 43

STARTING SEQUENCE OF OPERATION ............................................................................................................................................... 43

MAINTENANCE ............................................................................................................................................................................ 43

INSTALLATION CHECKLIST .................................................................................................................................................... 44

TROUBLESHOOTING............................................................................................................................................................. 45

REPLACEMENT PARTS .......................................................................................................................................................... 47

WARRANTY.......................................................................................................................................................................... 48

Series WTH Page 4 LT105 Feb. 2019

Introduction

Superior Radiant Products is a company in the infrared heating industry founded on the principles of product quality

and customer commitment.

Quality commitments are evidenced by superior design, a regard for design detail and an upgrade of materials

wherever justifiable.

Customer commitment is apparent through our ready responses to market demands and a never ending training

and service support program for and through our distributor network.

Superior Radiant offers its 20 years of infrared expertise in a cost effective unitary heater design as culmination of

that commitment. Series WTH models are field assembled, low intensity infrared heaters that are easy to install

and maintain, and which were engineered with significant input from our customers. They are designed to provide

economical operation and trouble-free service for years to come.

Important

These instructions, the layout drawing, local codes and ordinances, and applicable standards such as apply to gas

piping and electrical wiring comprise the basic information needed to complete the installation, and must be

thoroughly understood along with general building codes before proceeding.

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.

Installation Codes

Installations must comply with local building codes, or in their absence, the latest edition of the national regulations

and procedures as listed below.

General Installation and Gas Codes

Heaters must be installed only for use with the type of gas appearing on the rating plate, and the installation must

conform to the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the USA and CSA B149.1 and B149.2

Installation Codes in Canada.

This heater maybe approved for either indoor or outdoor installation. Not for use in residential dwellings, refer to

Rating plate.

Aircraft Hangar Installation

Installation in aircraft hangars must conform to the Standard for Aircraft Hangars, ANSI/NFPA 409 in the USA and

CSA B149.1 and B149.2 Installation Codes in Canada.

Public Garage Installation

Installation in public garages must conform to the Standard for Parking Structures, NFPA-88A or Standard for

Repair Garages, NFPA 88B, in the USA and CSA B149.1 and B149.2 Installation Codes in Canada.

Parking Structures

Technical requirements are outlined in ANSI/NFPA 88B (USA)

Series WTH Page 5 LT105 Feb. 2019

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.

Electrical

All heaters must be electrically 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.

Venting

Refer to the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the USA and CSA B149.1 and B149.2 Installation

Codes in Canada for proper location, sizing and installation of vents as well as information on clearance

requirements when penetrating combustible walls for venting purposes.

General Specifications

Gas Supply

Inlet Pressure

Natural Gas:

Minimum

Maximum

5.0”W.C.

14.0”W.C.

Propane Gas:

Minimum

Maximum

11.5”W.C.

14.0”W.C.

Manifold Pressure

Natural Gas:

3.5”W.C.

Propane Gas:

10.5”W.C.

Inlet Connection

Natural Gas or Propane: ½” female NPT

Electric Supply

120 VAC, 60 HZ, 1 Amp: 36”cord with grounded 3 prong plug

Flue and Outside Air Connection

4”O.D. male connection for flue adapter and outside air (optional) provided at the heater

Series WTH Page 6 LT105 Feb. 2019

Dimensional Charts

Heat Exchanger

Figure 1: Overall Dimensional Information

Figure 2: Component Dimensional Information

Series WTH Page 7 LT105 Feb. 2019

Configurations

Table 1: Configuration Information

Note:

Baffles are always placed in the last section of radiant tube.

Baffles are either aluminized or stainless steel sections 6' long.

When only 6' is required an aluminized steel baffle is installed, except on the WTH-40,000 where a special 6'

stainless steel baffle with a red identification tab must be installed.

When 12' is required, a 6’ stainless steel baffle is inserted first into the end tube followed by another 6’

aluminized baffle. The stainless steel baffle is now closest to the burner.

Part numbers for reference are:

CT045 Baffle Kit, WTH-40,000 BTU/hr only, 6' long, stainless steel with red identification tab.

CT046 Baffle Kit, 6' long, aluminized steel

CT047 Baffle Kit, 12' long aluminized & stainless steel.

*The following Special Configurations are also approved:

80,000 BTU/Hr, 50’heat exchanger with no baffle or 6’aluminized baffle

100,000 BTU/Hr, 50’ heat exchanger with no baffle or 6’aluminized baffle

150,000 BTU/Hr, 60’heat exchanger with no baffle or 6’aluminized baffle

The following special configurations are also approved with Premium Heat Exchanger only:

80,000 BTU/Hr, 20’heat exchanger with 12’baffle

100,000 BTU/Hr, 20’heat exchanger with 12’baffle

125,000 BTU/Hr, 30’heat exchanger with 12’baffle

205,000 BTU/Hr, 50' heat exchanger with a 4' baffle at 40', and a 8' baffle at 50'.

Model

* Special Configurations

available –see below

Rate

(BTU/Hr)

Heat Exchanger Length ft. (m)

Baffle

ft.(m)

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)

40' (12m)

12' (3.6m)

WTH-100

100,000

30' (9m)

40' (12m)

12' (3.6m)

WTH-125

125,000

40' (12m)

50' (15m)

6' (1.8m)

WTH-150

150,000

40' (12m)

60' (18m)

6' (1.8m)

WTH-175

175,000

50' (15m)

60' (18m)

WTH-205

205,000

60' (18m)

70' (21m)

Series WTH Page 8 LT105 Feb. 2019

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.

WARNING

Clearances as marked on the heater body must be maintained from vehicles parked beneath. Signs should be

posted identifying any possible violation of the clearance distances from the heater in all vehicle areas.

Maximum allowable stacking height in storage areas should be identified with signs or appropriate markings

adjacent to the thermostat or in a conspicuous location.

Table 2 lists the minimum clearance to combustible materials for various installation configurations. Note that

standard clearances also apply to installation above T-bar ceilings and above decorative grills. Additional clearance

may be required for glass, painted surfaces and other materials which maybe damaged by radiant or convective

heat.

Combustible materials are considered to be wood, compressed paper, plant fibres, plastics, Plexiglas or other

materials capable of being ignited and burned. Such materials shall be considered combustible even though flame-

proofed, fire-retardant treated or plastered.

Elbows and U-bends are un-heat treated aluminized material and are typically installed without reflectors. Reflector

miter kits are available for U-bends and elbows.

Adequate clearance to sprinkler heads must be maintained.

The stated clearance to combustibles represents a surface temperature of 90°F (50°C) above room temperature.

Building materials with low heat tolerance (i.e. plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to

degradation at lower temperatures. It is the installer’s responsibility to ensure that adjacent materials are

protected from deterioration.

Note 1:

Bottom Shields are approved for all burner sizes. The below clearance (dimension C in Table 2) may be reduced by

25% when an approved Bottom Shield is used.

Note 2:

Reduced clearances downstream from the burner are approved for all configurations. Dimensions B, C, and D in

Table 2 can be reduced for locations 25' (7.6 m) or more downstream from a burner maximum reduction is 50%

Series WTH Page 9 LT105 Feb. 2019

Table 2: Minimum Clearance to Combustibles Inches (cm)

Model No.: WTH

Reflector

Configurations

Dim

(cm)

MBH

100

MBH

125

MBH

150

MBH

175

MBH

205

MBH

Horizontal

2(5)

18(46)

45(114)

18(46)

2(5)

25(63)

58(147)

25(63)

2(5)

26(66)

62(157)

26(66)

2(5)

30(76)

67(170)

30(76)

4(10)

33(84)

71(180)

33(84)

4(10)

36(91)

74(188)

36(91)

6(15)

40(102)

78(198)

40(102)

6(15)

44(46)

80(203)

44(46)

45° Reflector Tilt

4(10)

40(102)

38(97)

4(10)

50(127)

46(117)

4(10)

58(147)

50(127)

4(10)

67(170)

58(147)

6(15)

4(10)

70(178)

63(160)

6(15)

4(10)

71(180)

64(163)

8(20)

4(10)

74(188)

67(170)

8(20)

4(10)

78(198)

72(183)

One Side Extension

2(5)

4(10)

50(127)

35(89)

2(5)

4(10)

58(147)

38(97)

2(5)

4(10)

63(160)

42(107)

2(5)

4(10)

73(185)

45(114)

4(10)

76(193)

50(127)

4(10)

78(198)

52(132)

6(15)

80(203)

54(137)

6(15)

84(203)

56(142)

Series WTH Page 10 LT105 Feb. 2019

Model No.: WTH

Reflector

Configurations

Dim

In (cm)

MBH

100

MBH

125

MBH

150

MBH

175

MBH

205

MBH

U-Tube, Horizontal

2(5)

25(64)

59(150)

22(56)

2(5)

28(71)

62(157)

26(66)

2(5)

30(76)

71(180)

30(76)

4(10)

34(86)

74(188)

33(66)

4(10)

37(94)

76(193)

36(84)

6(15)

40(102)

78(198)

40(102)

6(15)

45(114)

82(208)

44(112)

U-Tube, Opposite 45°

4(10)

46(117)

51(129)

16(41)

4(10)

50(127)

54(137)

18(46)

4(10)

54(137)

64(163)

18(46)

4(10)

63(160)

69(175)

22(56)

4(10)

64(163)

71(180)

24(61)

8(20)

67(170)

74(188)

26(66)

10(25)

72(183)

78(198)

29(74)

Unvented

Above

End

14(30)

26(66)

14(30)

26(66)

18(46)

26(66)

18(46)

26(66)

18(46)

26(66)

18(46)

32(81)

18(46)

32(81)

18(46)

32(81)

Vented

End

18(46)

Note: All dimensions shown are measured from outside surface of all tubes, reflectors and fittings

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