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08/13

STBII-3

J30-09053

Unit No.

Serial No.

ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE 

ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE OF GAS 

AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT THE POINT OF 

INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR FUTURE 

REFERENCE.

FOR YOUR  SAFETY

The use and storage of gasoline or other fl ammable vapors and liquids in open containers in 
the vicinity of this appliance is hazardous.

FOR YOUR  SAFETY

If you smell gas:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open fl ame.
4. Immediately contact your gas supplier.

APPROVED FOR USE IN CALIFORNIA

INSTALLER'S RESPONSIBILITY

Installer Please Note:

 This equipment has been test fired and inspected. It has been 

shipped free from defects from our factor y. However, shipment and installation 
problems such as loose wires, leaks, or loose fasteners may occur. 

It is the installer's 

responsibility to inspect and correct any problem that may be found.

RECEIVING INSTRUCTIONS

Inspect shipment immediately when 
received to determine if any damage 
has occurred to the unit during 
shipment. After the unit has been 
uncrated, check for any visible 
damage to the unit. If any damage 
is found, the consignee should sign    
the bill of lading indicating such 
damage and immediately file claim       
for damage with the transpor tation 
company.

APPROVED FOR USE IN CALIFORNIA

 Install, operate, and maintain unit in accordance with the manufacturer's 

instructions to avoid exposure to fuel substances, or substances from incomplete 
combustion, which can cause death or serious illness. The state of California 
has determined that these substances may cause cancer, birth defects, or other 
reproductive harm.

 Improper installation, adjustment, alteration, service, or maintenance 

can cause property damage, injury, or death. Read the installation, operating, and 
maintenance instruction thoroughly before installing or servicing this equipment.

ENERGY

PERFORMANCE

VERIFIED

RENDEMENT

ENERGETIQUE

VERIFIE

CM

VERIFIED

    

   

   

   

  

  

  

  

  

  

   

   

   

    

INT

ERTEK

INSTALLATION INSTRUCTIONS AND PARTS IDENTIFICATION

SEPARATED COMBUSTION TUBULAR GAS-FIRED

BLOWER STYLE UNIT HEATER

260 NORTH ELM ST., WESTFIELD, MA 01085

TEL: (413) 568-9571     FAX: (413) 562-8437

www.mestek.com

Summary of Contents for SEPARATED COMBUSTION TUBULAR GAS-FIREDBLOWER STYLE UNIT HEATER

Page 1: ...problem that may be found RECEIVING INSTRUCTIONS Inspect shipment immediately when received to determine if any damage has occurred to the unit during shipment After the unit has been uncrated check f...

Page 2: ...LECTRICAL CONNECTIONS 12 16 VENTING 17 22 OPERATION Explanation of Controls 23 Gas Input Rate 24 Main Burner Orifice Schedule 25 TROUBLESHOOTING GUIDES 26 30 MAINTENANCE 31 WARRANTY 32 IDENTIFICATION...

Page 3: ...cedures listed on Gas Equipment Start Up Sheet located in this manual Use only the fuel for which the heater is designed see rating plate Using LP gas in a heater that requires natural gas or vice ver...

Page 4: ...nging Distance Width 18 5 8 30 5 8 48 5 8 473 778 1235 F Hanging Distance Depth 19 19 1 2 32 3 4 23 1 2 32 3 4 483 495 832 597 832 G Discharge Opening Width 18 3 4 30 3 4 48 3 4 476 781 1238 H Depth t...

Page 5: ...2 4m above the floor Refer to the latest edition of NFPA 88B Repair Garages In Canada installation must be in accordance to the latest edition of CSA B149 Installation Codes for Gas Burning Appliances...

Page 6: ...R NR 44 47 58 66 71 75 6 1 13 4 14 3 17 7 20 1 21 6 22 9 60 8 75 80 85 90 95 110 125 130 138 2 4 22 9 24 4 25 9 27 4 29 0 33 5 38 1 39 6 42 1 10 65 70 75 79 83 95 109 115 120 3 0 19 8 21 3 22 9 24 1 2...

Page 7: ...ty of distortion or discoloration of adjacent materials Make certain that the lifting methods used to lift the heater and the method of suspension used in the field installation of the heater are capa...

Page 8: ...ternal Length of Pipe Feet meters Pipe Size Dia 10 20 30 40 50 60 70 80 90 100 125 150 175 200 in in 3 0 6 1 9 1 12 2 15 2 18 3 21 3 24 4 27 4 30 5 38 1 45 7 53 3 61 0 1 2 0 622 175 120 97 82 73 66 61...

Page 9: ...Fuel Gas Code in Canada according to CSA B149 See Tables 1 3 for correct gas piping size If gas pressure is excessive on natural gas applications install a pressure regulating valve in the line upstr...

Page 10: ...WHEEL 1 HOUSING 1 SHAFT AND 2 BEARINGS FOR 300 400 UNITS THE BLOWER ASSEMBLY CONSISTS OF 2 WHEELS 2 HOUSINGS 1 SHAFT AND 3 BEARINGS Figure 5 Motor Blower Assembly PART DESCRIPTION A Blower Housing B...

Page 11: ...1006 1035 1064 1093 630 663 697 730 763 796 829 863 896 928 962 995 1028 1061 1094 1127 1161 1194 1227 1260 697 734 771 807 844 880 918 954 991 1027 1064 1101 1137 1174 1211 1247 1284 1321 1357 1394 5...

Page 12: ...a vertical vibration free surface free from air currents and in accordance with the furnished instructions Mount the thermostat approximately 5 1 5m above the floor in an area where it will be expose...

Page 13: ...13 ELECTRICAL CONNECTIONS continued Figure 6d Separated Combustion Tubular Blower Units 100 150 with Single Stage Ignition Natural Gas and Propane LP Gas...

Page 14: ...14 ELECTRICAL CONNECTIONS continued Figure 6e Separated Combustion Tubular Blower Units 100 150 with Two Stage Ignition Natural Gas and Propane LP Gas...

Page 15: ...15 ELECTRICAL CONNECTIONS continued Figure 6f Separated Combustion Tubular Blower Units 175 400 with Single Stage Ignition Natural Gas and Propane LP Gas...

Page 16: ...16 ELECTRICAL CONNECTIONS continued Figure 6g Separated Combustion Tubular Blower Units 175 400 with Two Stage Ignition Natural Gas and Propane LP Gas...

Page 17: ...unit heater will result in the spillage of flue gas into the occupied space 9 Avoid installing units in areas under negative pressure due to large exhaust fans or air conditioning When required a flu...

Page 18: ...gth must not exceed 50 15 2m Equivalent length is the total length of straight sections PLUS 10 3 05m for each 90 elbow and 4 1 22m for each 45 elbow Maintain clearance between the vent pipe and combu...

Page 19: ...e piped as depicted in Figure 7A 7 The equivalent length of the combustion air system must not be less than 5 1 5m and must not exceed 50 15 2m Equivalent length equals the total length of straight pi...

Page 20: ...or horizontal vent systems longer than 5 1 5m the system must be supported from over head building structures at 3 1m intervals 10 The exhaust vent system must remain at a minimum distance of 6 152mm...

Page 21: ...al Arrangement Single Wall Vent System to Single Wall Termination Figure 7B Vertical Arrangement Single Wall Vent System to Single Wall Termination Figure 8A Horizontal Intake Vent Locations CAT 3619C...

Page 22: ...tions apply to Canadian installations in addition to installation and operating instructions 1 Installation must conform with local building codes or in the absence of local codes with current CSA B14...

Page 23: ...er venter motor is de energized 6 The fan operation is delayed 30 seconds once the thermostat is closed and continues operation for 30 seconds after the thermostat opens NOTICE The start up fan delay...

Page 24: ...checking the gas meter 4 Insert the time required to burn one cubic foot of gas into the following formula and compute the input rate 3600 Sec per Hr X BTU Cu Ft Input Rate Time Sec For example Assum...

Page 25: ...tion based on ANSI Z223 1 NFPA 54 2 Table based on heating value of 1 050 BTU Cu ft at sea level 3 Table based on heating value of 2 500 BTU Cu ft at sea level 4 Consult local utility for actual heati...

Page 26: ...anger Refer to Installation 4 Clean flue collector Refer to Installation 5 See Installation F Delayed ignition 1 Improper ground 2 Bad or broken spark cable 3 Faulty control 4 Pressure regulator set t...

Page 27: ...djust heat anticipator setting for longer cycles Refer to Electrical Connections 3 Check for proper air supply across heat exchanger and proper gas supply 4 Relocate thermostat away from outside wall...

Page 28: ...in thermostat circuit 4 Replace valve and check pressure setting See Table 4 Gas Piping Requirements 5 Refer to Pipe Installation and Table 4 Gas Piping Requirements 6 Adjust blower sheave to correct...

Page 29: ...ace T Power ventor turns on and off during operation 1 Power ventor improperly wired 2 Motor overload cycling or defective motor 3 Defective control board 1 Check power ventor circuit per wiring diagr...

Page 30: ...hat connects pressure switch and draft inducer 3 Airflow switch jumpered or miswired 1 Open manual reset rollout switch 2 Gas pressure too high over fire condition 3 Incorrect airflow due to blockage...

Page 31: ...ional functions of all safety devices supplied with your unit NOTICE The heater and vent system should be checked once a year by a qualified technician All Maintenance Service information should be re...

Page 32: ...luding halogenated hydrocarbons precipitated in the air d to any workmanship of the installer of the Product 3 This limited warranty is conditional upon a advising the installing contractor who in tur...

Page 33: ...D8928 D9064 Electrical Control Panel Door Pressure Switch Accordian Fastener Control Board Terminal Block Base Power Venter Connection Fan Motor Connection Transformer D9049 Burner Cover Panel Ignito...

Page 34: ...y Flue Collector Turbulator Vestibule Panel Tube Ass y D8926 HOW TO ORDER REPLACEMENT PARTS Please send the following information to your local representative if further assistance is needed contact...

Page 35: ...ltitude AL P6 Summer Winter Switch S 0 4 999 ft FIELD INSTALLED AS ____ T 5 000 11 999 ft All Field Installed Accessories are to be entered as a separate line item using Note Installations over 2 000...

Page 36: ...START this equipment unless you fully understand the controls GAS EQUIPMENT START UP GENERAL With power and gas off Make certain all packing has been removed Tighten all electrical terminals and conn...

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