Detroit Radiant Products DR 75 User Manual

DTHS SERIESTUBE HEATERINSTALLATION, OPERATIONMAINTENANCEAND PARTS MANUALDetroit Radiant Products CompanyFOR YOUR SAFETY!IF YOU SMELL GAS:1. Open Windo

1.3 Heater Mounting1. Each heater comes equipped with the necessary hang-ers (Figure 1-4) for hanging. The DTHS 20 requiresthree hangers, the DTHS 30

IMPORTANT: The DTHS models utilize one or twobaffle(s) which must be installed in the last radiant tubes.Install these baffles before assembling tube

1.1 Reflector Assembly1. Install reflector center supports (RCS) as shown inFigure 1-11.2. Slide reflector through wire hangers and adjust thereflecto

Optional Side Shield Installation1. Install an additional 2 reflector center supports (RCS)4 ft. on each side of the standard RCS.2. Install the side

Optional “L” or “U” ConfigurationA maximum of two 90° elbows (DRP Accessory #E6)or one 180 degree U (DRP Accessory #TF1B) (Figures1-15 and 1-16) may b

Figure 1-17Figure 1-16Figure 1-18Figure 1-19SEE CHART 413

1.6 Flue VentingThe following guidelines must be observed to en-sureproper system performance and safety:• Check all applicable codes prior to install

• All vent pipes must be sealed with high temperaturesealant and (3) #8 sheet metal screws.Figure 1-21Figure 1-23Figure 1-22Figure 1-24DUAL-EXHAUST AS

1.7 Installation for Unvented Operation(Optional)The model DTHS units are approved for unvented op-eration when equipped with a factory supplied end c

Figure 1-261.8 Combustion Air RequirementsCombustion air intake has a factory preset air orifice. Ifindoor combustion air is to be supplied for a tig

FOREWORDWARNING!THIS HEATER MUST BE INSTALLED AND SERVICED BY TRAINED GAS INSTALLA-TION AND SERVICE PERSONNEL ONLY. READ AND UNDERSTAND THESE INSTRUC-

1.9 Gas SupplyCORRECT INLET PRESSURES ARE VITAL FOREFFICIENT OPERATION OF HEATERS. REFERTO AGA RATING LABEL AND CONSULT GASCOMPANY IF NECESSARY.If al

• Allowance for ExpansionAllowances must be made for the system to expand.The supplied stainless-steel, flexible gas connectoris recommended. If, how

1.10 Electrical Requirements1. Heaters operate on 120V, 60 Hz, single phase. Themaximum amperage requirement (starting current)is 4.8 amps per h

1.11 Lighting Instructions1. Purge main gas supply line at start-up.2. Rotate heater’s manual gas valve knob to the “ON”position.3. Close electrical c

1 THEORY OF OPERATION1.1 DTHS-2 Models: 40,000 BTU/H through 100,000BTU/H• Starting Circuit (Figures 2-1 and 2-2)When voltage is applied to L1 and L2

Figure 2-1Figure 2-223

MAINTENANCEModel DTHS gas-fired, infrared heaters require a mini-mum of routine maintenance to keep them operating atpeak performance.1. Ensure that t

4 TROUBLESHOOTINGGlo-bar ReplacementShut off gas and electricity to unit if installed.Remove cover from control box (see Figure 4-1).Unplug wire (A)

4.3 TROUBLESHOOTING26

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TABLE OF CONTENTS PAGE1. INSTALLATION 1.1 Design Criteria 41.2 Prechecks 41.3 Heater Mounting 61.4 Reflector Assembly 81.5 Optional “

5 PARTS LIST5.1 Basic Parts List28

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SAFETY INFORMATION• This infra-red heater is designed for use in industrial and commercial buildings such as warehouses, manu-facturing plants, aircra

SAFETY CLEARANCE INFORMATIONWARNING!Failure to comply with the statedclearances to combustibles could result inpersonal injury, death and/or propertyd

INSTALLATION1.1 Design CriteriaPerimeter mounting of these infrared heaters providesfor the most efficient installation. In Figure 1-1, the heat-ers

When positioning heaters, keep in mind the clear-ancesto combustible materials, lights, sprinkler heads, over-head doors, storage areas with stacked m

1.1 Prechecks1. Verify that all parts have been received by checkingthem against the packing list. If anything is missing,notify the Re-Verber-Ray re

Figure 1-3DIMENSIONS FOR MODELS: DTHS 20, 30, 40 AND 50 INFRA-RED TUBE HEATER7