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HE, DE & RE MANUAL 

IOM-26 

15 of 33 

Oct 12 R4

 

 

DE PROCESS HEATER INSTALLATION REQUIREMENTS 

 
1.  DE Series process air heaters require the installation of a manual emergency gas shutoff valve in an 

appropriate location that allows access to this valve to shut off the fuel to this heater in case of a fire or 
explosion at the heater or the space served by the heater. 

 
2.  If the space served by this DE Series process air heater can be entered by personnel: 
 

a.  The access opening(s) to the space shall be equipped with door interlock switch(es) to prevent the 

operation of the heater during a bake cycle when an access door is opened. 

b.  It is recommended that warning signage be posted each access opening with wording equivalent 

to: 

 

Do not enter this space until the ventilation/cool down cycle is complete. 

 
3.  If the space served by this DE Series process air heater is intended to be entered by personnel 

following a bake cycle, the space should be ventilated to purge contaminants from the space and cool 
the products to avoid a burn hazard.  The cool down cycle control is normally provided as part of the 
remote panel. See the unit function and wiring diagrams. 

 
4.  If this DE Series process air heater has a re-circulating mode that draws air from the space being 

served, filters shall be provided in the return air duct system that are approved by the authority having 
jurisdiction if there is airborne particulate matter that could be detrimental to the operation of the heater. 
 
If airborne particulate matter could accumulate in the duct system in the re-circulating mode, the return 
air duct system shall be installed with doors, panels, or other means to facilitate inspection, 
maintenance, cleaning, and access to fire protection devices.  Periodic inspection and cleaning of the 
re-circulating air duct system is required 
 
The duct systems shall be designed to prevent recirculation of insufficiently diluted products of 
combustion. 

 
5.  The minimum amount of ventilation air supplied to the space in re-circulation mode must exceed 200 

cfm per 1000 cfh of natural gas based on the maximum capacity of the heater plus an allowance to 
sufficiently dilute the VOC’s created by the process to maintain the lower explosive level (LEL) below a 
25 percent threshold value.  Refer to the unit rating plate for this information. 

 
6.  If this DE Series process air heater serves a paint booth refer to the unit function and wiring diagram 

provided for the following: 

 

a.  Wiring the paint spraying equipment interlock. This prevents operation of the paint spraying 

equipment unless the process heater is operated in the ventilation air mode. 

 
b.  An automatic purge (ventilation) air mode is provided for an minimum of three (3) minutes or a 

minimum of four (4) air changes of the paint booth volume, whichever is greater at the start of the 
bake or drying cycle with the paint spraying equipment locked out. 

 

c.  Interlock between the exhaust fan and heater fan. 

 

Summary of Contents for ENGINEERED AIR DE Series

Page 1: ...EAD OFFICE AND FACTORY CANADIAN EASTERN FACTORY 1401 HASTINGS CRES SE CALGARY ALBERTA T2G 4C8 Ph 403 287 2590 Fx 888 364 2727 Parts 32050 W 83 rd STREET DESOTO KANSAS 66018 Ph 913 583 3181 Fx 913 583...

Page 2: ...T FREEZE PROTECTION 16 ELECTRICAL INSTALLATION 16 Recommended 24V Field Wiring Size 17 DUCT MOUNTED TE 6000 EA3 TEMPERATURE SENSOR 18 COIL CONNECTIONS 18 DRAIN TRAPS 19 FLUSHING AND DEGREASING OF WATE...

Page 3: ...inning the installation including all safety precautions and warnings FOR YOUR SAFETY If you smell gas 1 Open windows 2 Don t touch electrical switches 3 Extinguish any open flame 4 Immediately call y...

Page 4: ...S Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Leave the building immediately Immediately call your gas supplier from a phone remote from...

Page 5: ...warranties express or implied ENGINEERED AIR specifically disclaims any implied warranty of merchantability and or fitness for purpose Under no circumstances shall ENGINEERED AIR be liable to nor be r...

Page 6: ...be internal damage Remove protective covers and check for internal damage Replace covers if the unit is not being assembled or installed at this time Open access doors and check for internal damage Cl...

Page 7: ...n of the Canadian Electrical Code Part 1 C S A Standard C22 1 Provincial and Local Codes and in accordance with the local authorities having jurisdiction 3 The installation of this unit shall be in ac...

Page 8: ...dance with local authorities having jurisdiction or NFPA 54 an accessible approved manual shutoff valve shall be installed within 6 ft 1 8 m of the valve train gas manifold 6 The installation of this...

Page 9: ...ic unit mounting Consult the Submittal Record for specific unit mounting Engineered Air units are constructed for three types of mounting 1 Base mounting Consult the Submittal Record for type of mount...

Page 10: ...he gasket material for splits is open cell foam It is less dense than the closed cell foam and compresses easily ONLY USE THE CLOSED CELL FOAM GASKET PROVIDED FOR SEALING THE CURB Curbs may be broken...

Page 11: ...rial for sealing the curb The gasket material for curbs is closed cell foam It is more dense than open cell foam and does not compress as easily ONLY USE THE OPEN CELL FOAM GASKET PROVIDED FOR SEALING...

Page 12: ...pply pressure higher than the unit rating plate requires an additional field supplied gas regulator 5 Install an approved appliance shutoff valve on the gas supply in accordance with the requirements...

Page 13: ...within 20 ft 6 m horizontally of the vertical plane in which combustible gas vapor or dust is present This equipment shall be installed so that in the event the make up air shut down causes a hazard...

Page 14: ...ion air must be provided in accordance with the information shown on the name plate Recirculation of room air in HE DE RE units may be hazardous in the presence of A Flammable solids liquids and gases...

Page 15: ...jurisdiction if there is airborne particulate matter that could be detrimental to the operation of the heater If airborne particulate matter could accumulate in the duct system in the re circulating...

Page 16: ...ally grounded and all wiring must be installed in accordance with the National Electrical Code ANSI NFPA 70 and or the Canadian Electric Code CSA 22 1 and to the approval of the authorities having jur...

Page 17: ...15 12 AWG Notes 1 The field wiring load depends on the actual load on a particular control circuit the field wiring is connected to Refer to the internal wiring diagram of the unit 2 The table above i...

Page 18: ...refrigerant coils For proper operation airflow must be counterflow to the flow of the fluid The inlet water connection is normally at the bottom of one header and the outlet water connection at the to...

Page 19: ...nnected and properly trapped Cooling coil drain pans may have multiple drain connections extending outside the unit casing Multiple drains may be connected to a common drain providing that each drain...

Page 20: ...contains moving parts that can start unexpectedly Injury or death could occur if instructions are not followed All work should be performed by a qualified technician Always disconnect and lock out pow...

Page 21: ...is less than 2 and therefore is OK If voltage imbalance is greater than two percent 2 turn off main disconnect and contact the installing electrical contractor to have the voltage condition corrected...

Page 22: ...re the air volume being delivered matches the unit rating plate Failure to perform a proper air balance can cause injury or death damage to the equipment property damage system operational problems or...

Page 23: ...e rate is less than noted in the table remove the 6mm tube reconnect the outlet pressure tap plug 8 Energize the control system and open upstream manual gas valve 9 After testing check all piping conn...

Page 24: ...the problem For example a lockout will occur if the air pressure switches are not made Refer to separate trouble shooting guide for additional information Also check spark rod and flame rod to see if...

Page 25: ...iring close the main manual firing valve and the pilot firing valve The automatic valves should close within 4 seconds and the flame ignition control should lock out within 10 to 15 seconds To return...

Page 26: ...l growth or any other indoor air quality issues If mold or biological growth is present determine and fix the cause Properly remove and dispose of the contamination Properly clean and sanitize the aff...

Page 27: ...in the pulleys the V belt does not have to be extremely tight It should be as loose as possible without slipping in the pulley grooves Belt deflection 3 4 19mm for each foot 300mm of span between the...

Page 28: ...in lb 26 31 Nm 2 7 16 62mm 147 in lb 16 6 Nm 155 in lb 17 5 Nm 228 272 in lb 26 31 Nm 2 11 16 68mm 173 in lb 19 6 Nm 248 in lb 28 0 Nm 228 272 in lb 26 31 Nm 2 15 16 75mm 173 in lb 19 6 Nm 248 in lb 2...

Page 29: ...inhibitors antioxidant additives and a minimum viscosity of 500 SSU at 100 F 38 C Some examples of grease having these properties are Shell Alvania RL 2 Mobil Mobilith SHC220 Exxon Ronex MP Lubricate...

Page 30: ...tion temperature and surrounding conditions will affect the re lubrication frequency required Clean and repack bearing annually Remove old grease pack bearing full and fill housing reservoirs on both...

Page 31: ...29 8 kW Over 40 HP Over 29 8 kW Less than 12 5 Years 3 Years 1 5 Years More than 12 2 Years 1 Year 9 Months NOTE Motors that run in severe conditions should be greased as specified by the motor manufa...

Page 32: ...rost or snow Plugged or excessively dirty filters can cause damage to the equipment See submittal record for filter quantities sizes and types Use same size and type for replacement A High Velocity Pe...

Page 33: ...lure to maintain clean coils can cause injury or death damage to the equipment property damage or system operational problems Moisture carry over can result from dirty coils The external surface of fi...

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