User guide

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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 factory. 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 transportation

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

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 content (36 pages)

PAGE 1
INSTALLATION INSTRUCTIONS AND PARTS IDENTIFICATION STBII-3 J30-09053 SEPARATED COMBUSTION TUBULAR GAS-FIRED BLOWER STYLE UNIT HEATER 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.
PAGE 2
TABLE OF CONTENTS SPECIFICATIONS Description………………………………………............ 2 Performance & Dimensional Data……. ...................... 4 GENERAL SAFETY INFORMATION Installation Codes……………………………............. 2,3 Special Precautions…………………………. ............ 2,3 INSTALLATION Locating Units……………………………….................. 5 Combustion Air……………………………….. .............. 5 Heat Throw Data…………………………….. ............... 6 Clearances………………………………………............ 7 Suspension of Units…………………………................
PAGE 3
GENERAL SAFETY INFORMATION Failure to comply with the general safety information may result in extensive property damage, severe personal injury, or death. Do not attempt to convert the heater for use with a fuel other than the one intended unless using an appropriate gas conversion kit provided by the manufacturer. Such conversion is dangerous, as it will create the risks previously listed.
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Table 1 - Performance and Dimensional Data - Separated Combustion Tubular Blower Unit Heater Unit Capacity (MBH) 100 PERFORMANCE DATA† Input - BTU/Hr. 100,000 (kW) (29.3) Output - BTU/Hr. 83,000 (kW) (24.3) Thermal Efficiency - % 83 Free Air Delivery - CFM 1,181 (cu. m/s) (0.557) Air Temperature Rise - Deg. F (Deg. C) Outlet Velocity - FPM 370 (m/s) (1.879) Full Load Amps at 115V 7.3 Maximum Circuit Ampacity 8.6 MOTOR DATA: Motor HP 1/4 Motor kW 0.19 Motor Type** SPH RPM 1,725 Amps @ 115V 5.
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INSTALLATION Figure 2 - Dimensional Drawing – Separated Combustion Tubular Blower Unit Heater 1 1/8 (29mm) 32 1/2 H E M (826mm) F C D B Flue 33 (838mm) 24 1/2 (622mm) (Discharge Opening) Electrical Control Panel G (Discharge Opening) Gas Valve P Rear View A Side View Front View D9050B PUBLIC GARAGES: In repair garages, unit heaters must be located at least 8' (2.4m) above the floor. Refer to the latest edition of NFPA 88B, Repair Garages.
PAGE 6
INSTALLATION (continued) Table 2 - Heat Throw Data Standard Heater 30° Nozzle 60° Nozzle 90° Nozzle UNIT SIZE BTU/Hr Degree of Nozzle Distance From Floor to Bottom of Unit "H" - ft (m) 100,000 125,000 150,000 None 8 60 65 70 75 80 90 105 110 120 (2.4) (18.3) (19.8) (21.3) (22.9) (24.4) (27.4) (32.0) (33.5) (36.6) 300,000 350,000 400,000 Approximate Distance of Heat Throw - Feet (Meters) 54 56 60 64 68 78 90 95 100 (16.5) (17.1) (18.3) (19.5) (20.7) (23.
PAGE 7
INSTALLATION (continued) Figure 3A - Heater Mounting* CLEARANCES: Each Gas Unit Heater shall be located with respect to building construction and other equipment so as to permit access to the Unit Heater. Clearance between vertical walls and the vertical sides of the Unit Heater shall be no less than 6" (152mm). To ensure access to the control box, a minimum of 18" (457mm) is required for the control box side.
PAGE 8
INSTALLATION (continued) GAS PIPING To avoid damage or possible personal injury, do not connect gas piping to this unit until a supply line pressure/leak test has been completed. Connecting the unit before completing the pressure/leak test may damage the unit gas valve and result in a fire hazard. Do not rely on a shut-off valve to isolate the unit while conducting gas pressure/leak tests. These valves may not be completely shut off, exposing the gas valve to excessive pressure and damage.
PAGE 9
INSTALLATION (continued) PIPE INSTALLATION Figure 4 - Pipe Installation, Standard Controls 1. Install the gas piping in accordance with applicable local codes. 2. Check gas supply pressure. Each unit heater must be connected to a manifold pressure and a gas supply capable of supplying its full rated capacity as specified in Table 4. A field LP tank regulator must be used to limit the supply pressure to a maximum of 14" W.C. (3.5 kPa).
PAGE 10
BLOWER SET UP AND ADJUSTMENT BLOWER SET UP The drive ratio of the motor and blower sheaves has been preset at the factory for a temperature rise of 65°F at .2" W.C. If the unit is to be operated under different static air flow or pressure requirements, the drive ratio must be altered by means of the adjustable sheave on the blower motor. 1. Ensure that all packing material, support blocks, etc. have been removed from the unit. 2.
PAGE 11
MOTOR AND PULLEY All motor data based on standard ODP Motors. Table 5 Motor Full Load Amps* HP 1/4 1/2 3/4 1 1-1/2 2 115-1 5.1 7.2 11.6 13.0 18.2 21.0 208-1 2.2 3.7 5.2 6.6 9.1 11.3 VOLTAGE - PHASE 230-1 208-3 2.3 1.7 3.8 2.3 5.0 3.0 6.5 3.4 9.1 5.1 10.5 6.2 * Average value, all speeds and frequencies. 230-3 1.3 2.2 3.4 3.4 5.2 6.0 460-3 0.7 1.1 1.7 1.7 2.6 3.0 575-3 N/A 0.8 1.1 1.3 1.7 N/A Table 6 Pulley Table 1725 RPM Motors (1/3 to 2 H.P.) BLOWER PULLEYS MOTOR PULLEYS IVL34 IVL44 1.9-2.9 2.8-3.
PAGE 12
ELECTRICAL CONNECTIONS Figure 6a Low-voltage Thermostat Wiring Single Stage HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cause severe personal injury or death. Figure 6b Low-voltage Thermostat Wiring Two Stage Standard units are shipped for use on 115 volt, 60 hertz, single phase electric power.
PAGE 13
ELECTRICAL CONNECTIONS (continued) Figure 6d - Separated Combustion Tubular Blower Units 100-150 with Single Stage Ignition, Natural Gas and Propane (LP) Gas 13
PAGE 14
ELECTRICAL CONNECTIONS (continued) Figure 6e - Separated Combustion Tubular Blower Units 100-150 with Two Stage Ignition, Natural Gas and Propane (LP) Gas 14
PAGE 15
ELECTRICAL CONNECTIONS (continued) Figure 6f - Separated Combustion Tubular Blower Units 175-400 with Single Stage Ignition, Natural Gas and Propane (LP) Gas 15
PAGE 16
ELECTRICAL CONNECTIONS (continued) Figure 6g - Separated Combustion Tubular Blower Units 175-400 with Two Stage Ignition, Natural Gas and Propane (LP) Gas 16
PAGE 17
VENTING ANSI now organizes vented appliances into four categories. Venting Categories Negative Vent Pressure Positive Vent Pressure Non Condensing Condensing I II III IV Category I Includes non-condensing appliances with negative vent pressure, like the traditional atmospheric unit heater. Category II Groups condensing appliances with negative vent pressure. Category IV Covers condensing appliances with positive vent pressure.
PAGE 18
VENTING (continued) HORIZONTALLY VENTED UNIT HEATERS (CATEGORY III) Horizontal venting arrangements are designed to be used with single wall vent pipe. Horizontal venting arrangements must terminate external to the building using UL 1738 listed and approved single wall or double wall vent. For installations in Canada, use corrosion resistant and gas-tight, listed vent pipe conforming with local building codes, or in the absence of local building codes, with current CSA-B149.
PAGE 19
VENTING (continued) NOTICE: Combustion and exhaust venting instructions below describe two-pipe venting. If venting concentrically, a Combustion Air Inlet Kit is required and instructions included in the kit should be followed. COMBUSTION AIR VENTING AND PIPING 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 pipe, plus 10' (3.05m) for each 90° elbow and 4' (1.22m) for each 45° elbow.
PAGE 20
VENTING (continued) Figure 7A - Vertical Intake/Vent Installation 5. Any run of single wall vent pipe passing through an unheated space must be insulated with an insulation suitable to 550°F. 6. The vent system must be installed to prevent collection of condensate. Pitch horizontal pipes downward 1/4" per foot (21mm/m) toward the vent cap to facilitate drainage. Vertical vent pipes should be piped as depicted in Figures 7A & 7B. 7. The equivalent length of the vent system must not be less than 5' (1.
PAGE 21
Figure 7B - Vertical Arrangement - Single Wall Vent System to Single Wall Termination CAT-3619C Figure 8A - Horizontal Intake/Vent Locations CAT-2765C Figure 8B - Horizontal Arrangement - Single Wall Vent System to Single Wall Termination CAT-3620F 21
PAGE 22
Figure 9A - Vertical Arrangement - Single Wall Vent System to Double Wall Termination CAT-3662D Figure 9B - Horizontal Arrangement - Single Wall Vent System to Double Wall Termination CAT-3661F ADDITIONAL REQUIREMENT FOR CANADIAN INSTALLATIONS REFER TO SPECIFICATION TABLE AND INSTALLATION MANUAL FOR PROPER USAGE. * The following instructions apply to Canadian installations in addition to installation and operating instructions. 1.
PAGE 23
OPERATION SEPARATED COMBUSTION BLOWER UNITS DIRECT SPARK IGNITION EXPLANATION OF CONTROLS: 1. The unit heater is equipped with a power vent system that consists of a power venter motor and blower, pressure switch, and sealed flue collector in place of the conventional draft diverter. 2. The power venter motor is energized by the room thermostat through the integrated control board when a demand for heat is sensed.
PAGE 24
OPERATION PRIMARY AIR SHUTTER ADJUSTMENT Primary air adjustment is made at the factory. No field adjustments are necessary. GAS INPUT RATE Check the gas input rate as follows (Refer to General Safety Information section for metric conversions). 2. PROPANE GAS: An exact manifold pressure of 10.0" W.C. (2.5 kPa) must be maintained for proper operation of the unit heater. If the unit is equipped with a pressure regulator on the combination gas valve, follow steps "a" through "d" above.
PAGE 25
OPERATION (continued) TUBULAR UNIT HEATER HIGH ALTITUDE DERATION This Tubular Unit Heater has been manufactured utilizing standard burner orifices and a normal manifold pressure setting as per the specifications shown on your unit rating plate. are made in the field, attach label #J17-06459 to the unit, and record adjusted manifold pressure, altitude of the unit installation and the technician’s name and date on the label using a permanent marker.
PAGE 26
Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE(S) CORRECTIVE ACTION A. Flame pops back. 1. Burner orifice too small. 1. Check with local gas supplier for proper orifice size and replace. Refer to "Gas Input Rate." B. Noisy Flame. 1. Irregular orifice causing whistle or resonance. 1. Replace orifice. 2. Excessive gas input. 2. Test and reset manifold pressure (see Table 4 - "Gas Piping Requirements"). 1 Clogged main burners. 1. Clean main burner ports.
PAGE 27
Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued) SYMPTOMS H. Condensation. I. Burners will not shut off. J. Rapid burner cycling. K. Blower will not run. L. Blower motor turns on and off while burner is operating. M.Blower motor will not stop. POSSIBLE CAUSE(S) CORRECTIVE ACTION 1. Improper venting. 1. Refer to "Installation." 2. Unit under fired. 2. Check gas supply pressures to unit. Refer to "Installation." 3. Building/space too cold. 3. Refer to "Installation.
PAGE 28
Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued) SYMPTOMS N. Not enough heat. O. Too much heat. P. Noisy blower/motor. Q. Cold air is delivered during heater operation. R. High limit is tripping. POSSIBLE CAUSE(S) CORRECTIVE ACTION 1. Incorrect gas input. 1. Refer to "Gas Input Rate" 2. Heater undersized. 2.
PAGE 29
Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued) SYMPTOMS S. Power ventor will not run. T. Power ventor turns on and off during operation. U. Power ventor will not stop. V. Noisy power ventor. POSSIBLE CAUSE(S) CORRECTIVE ACTION 1. No power supply to unit. 1. Turn on power supply, check fuses and replace if bad. 2. Thermostat not calling. 2. Turn up thermostat. Check for 24V on terminals R and W1 on terminal strip. 3. Loose wiring or connection. 3.
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Table 9A - Separated Combustion Tubular Blower Troubleshooting with LED Indicator Assistance No Cycling or appliance power or thermostat call for heat 2. Remove the appliance burner compartment door. Do not interrupt power to the control board by opening since appliance failure has occured. any electrically interlocked panels. 3.
PAGE 31
MAINTENANCE PERIODIC SERVICE NOTICE: The heater and vent system should be checked once a year by a qualified technician. Should maintenance be required, perform the following inspection and service routine: 2. Turn off the manual gas valve and electrical power to the unit heater. 3. To clean or replace the burners, remove burner cover. Remove top strip from above burners. Lift burners up and pull away from manifold to remove. 4.
PAGE 32
LIMITED WARRANTY Separated Combustion Tubular Blower Unit Heaters 1. The "Manufacturer" warrants to the original owner at original installation site that the above model Gas-Fired Heater ("the Product") will be free from defects in material or workmanship for (1) year from the date of shipment from the factory, or one and one-half (1-1/2) years from the date of manufacture, whichever occurs first.
PAGE 33
IDENTIFICATION OF PARTS SEPARATED COMBUSTION BLOWER UNIT HEATERS Figure 11 - Blower Parts Figure 12 - Component Parts Hanger Locations Flue Power Vent Assembly Belt Guard Motor Blower Electrical Control Panel Assembly Flame Sensor Manifold Burner Assembly Bracket Assembly Ignitor Burner Cover Panel Hinge Sight Glass D8925B Figure 13 - Vestibule Panel / Tube Assembly D9049 D9049 Figure 14 - Electrical Control Panel Assembly Accordian Fastener Pressure Switch Power Venter Connection Transformer
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IDENTIFICATION OF PARTS (continued) Figure 16 - Power Venter Assembly (300/400 Unit Sizes Shown) Figure 15 - Power Venter Assembly (100/250 Unit Sizes Shown) D4798 D4780 Figure 17 - Turbulator/High Limit Location Power Venter Ass'y Vestibule Panel/ Tube Ass'y Flue Collector Turbulator D8926 D8926 High Limit Ass'y HOW TO ORDER REPLACEMENT PARTS Please send the following information to your local representative: if further assistance is needed, contact the manufacturer's customer service department.
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SEPARATED COMBUSTION TUBULAR BLOWER UNIT NUMBER DESCRIPTION DIGIT T ITEM X X X – 1 PREFIX 2 UT 3 4 5 CA 6 7 8 9 10 11 12 13 14 FT FM GT AL GC SV MT MS + AS (Internal Use Only) Digit #1, 2 - Unit Type [UT] Digit #12 - Motor Type [MT] SC - Separated Combustion Tubular Blower 1 - Open Drip Proof (Standard) Digit #3, 4, 5 - Capacity [CA] 2 - Totally Enclosed 3 - Premium Efficiency, Open Drip Proof 4 - Premium Efficiency, Totally Enclosed 100 - 100,000 BTU/HR 125 - 125,000 BTU/HR 150
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GAS EQUIPMENT START-UP Customer ____________________________________ Job Name & Number _________________________ PRE-INSPECTION INFORMATION With power and gas off. Type of Equip: Unit Heater Serial Number _________________________ Model Number __________________________ Name Plate Voltage: _____________ Name Plate Amperage: _____________ Type of Gas: Natural Tank Capacity _______ lbs.