Instruction Manual

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11/12

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.

PSCII-8

J30-05388

INSTALLATION INSTRUCTIONS & PARTS LIST

SEPARATED COMBUSTION

GAS FIRED PROPELLER UNIT HEATERS

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 call your gas supplier.

Model No.

Serial No.

APPROVED FOR USE IN CALIFORNIA

Installer Please Note: This equipment has been test fired and inspected. It has been

shipped free from defects from our factory. However, during 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 problems that may be found.

Install, operate and maintain unit in accordance with 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 instructions thoroughly before installing or servicing this equipment.

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 POINT OF

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

REFERENCE.

ENERGY

PERFORMANCE

VERIFIED

RENDEMENT

ENERGETIQUE

VERIFIE

260 NORTH ELM ST., WESTFIELD, MA 01085

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

www.mestek.com

Summary of content (32 pages)

PAGE 1
PSCII-8 J30-05388 INSTALLATION INSTRUCTIONS & PARTS LIST SEPARATED COMBUSTION GAS FIRED PROPELLER UNIT HEATERS 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 POINT OF INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR FUTURE REFERENCE. Model No. Serial No.
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TABLE OF CONTENTS SPECIFICATIONS Basic Description .................................................... 2 Performance & Specification Data .......................... 4 GENERAL SAFETY INFORMATION Installation Codes (throughout manual) .............. 2, 3 Special Precautions ............................................ 2, 3 INSTALLATION Locating Units ..................................................... 5, 6 Proper Clearances .............................................. 5, 6 Suspension of Units ...........
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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. Such conversion is dangerous, as it will create the risks listed previously. This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachusetts.
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Table 1 – Performance and Specification Data – Separated Combustion Propeller Unit heater Capacity (MBH) 100 PERFORMANCE DATA ‡ Input BTU/Hr 100,000 (kW) (29.3) Output BTU/Hr 80,000 (kW) (23.4) Thermal Efficiency (%) 80 Free Air Delivery CFM 1,480 (cu. m/s) (0.699) Air Temperature Rise °F 50 (°C) (10) Outlet Velocity FPM 775 (m/s) (3.9) Full Load Amps at 115V (ODP) 4.5 MOTOR DATA: Motor HP 1/20 Motor (kW) (0.037) Motor Type (ODP) SP RPM 1,050 Amps @ 115V (ODP) 2.
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INSTALLATION Do not install unit heaters in corrosive or flammable atmospheres! Premature failure of, or severe damage to the unit will result! of the highest aircraft to be stored in the hangar and 8 feet (2.4m) above the floor in shops, offices and other sections of the hangar where aircraft are not stored or housed. Refer to current ANSI/NFPA No. 409, Aircraft Hangars. In Canada, installation is suitable in aircraft hangars when acceptable to the enforcing authorities.
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INSTALLATION (continued) Make certain that the structure to which the heater is mounted is capable of supporting its weight. Under no circumstances must the gas lines, the venting system or the electrical conduit be used to support the heater; nor should any other objects (i.e. ladder, person) lean against the heater, gas lines, venting system or the electrical conduit for support. Unit heaters should not be installed to maintain low temperatures and/or freeze protection of buildings.
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GAS SUPPLY PIPING To avoid equipment 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 unit gas valve to excessive pressure and damage.
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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 (see tabe 4). A field LP tank regulator must be used to limit the supply pressure to maximum of 14 inch WC (3.5 kPa). All piping should be sized in accordance with the latest edition of ANSI Standard Z223.
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ELECTRICAL CONNECTIONS * Thermostat wires tagged “W” and “G” must be connected together except when using a general purpose "SPDT" 24VAC relay and a standard thermostat with subbase. 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 5 - C1267G Standard units are shipped for use on 115 volt, 60 hertz single phase electric power.
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Figure 6 10
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Figure 7 11
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Figure 8 12
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Figure 9 13
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INSTALLATION - VENTING N OT I C E : C o m bu s t i o n a n d e x h a u s t v e n t i n g instructions below describe two-pipe venting. If venting concentrically, a Concentric Vent Kit is required and instructions included in the kit should be followed. 6. The combustion air system must be installed to prevent collection of condensate. Pitch horizontal pipes downward 1/4 inch per foot (21mm/m) toward the inlet cap to facilitate drainage.
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INSTALLATION - VENTING (continued) Never use pipe of a diameter other than that specified in Table 1, page 4! Never use PVC, ABS or any other non-metallic pipe for venting! To do so may result in serious damage to the unit and or severe personal injury or death! For a VERTICAL vent pipe section that passes through a floor or roof, an opening 4 inches (102mm) greater in diameter is required. The opening must be insulated and flashed in accordance with applicable installation codes.
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Figure 10 - Vertical Intake/Vent Installation * Size according to expected snow depth. ** If excessive condensation develops, a drip leg with a condensate drain may be required. Insulating the pipes may eliminate the problem.
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Figure 10A - Horizontal Intake/Vent Locations Figure 11 - Vertical Vent Installation Figure 11A - Horizontal Vent Installation 17
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OPERATION Never operate the unit beyond the specified limits or severe damage to and or premature failure of the unit will result! INITIAL LIGHTING 1. Open the manual gas valve, in the gas supply line to the unit heater. Loosen the union in the gas supply line to purge it of air. Tighten the union and check for leaks. EXPLANATION OF CONTROLS (see Figure 12) 1.
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Figure 12 - Burner Components/Unit Controls Intermittent Pilot Ignition BURNER DRAWER COMMON PARTS: 1. MAIN BURNERS 2. BURNER MANIFOLD 3. AIR SHUTTERS 4. BURNER SPRINGS 5. MAIN BURNER ORIFICE 6. TRANSFORMER 7. PILOT TUBING CONTROLS (REFER TO UNIT WIRING DIAGRAM): 8A. MAIN GAS VALVE (HONEYWELL) 8B. MAIN GAS VALVE (WHITE-RODGERS) 9. HONEYWELL IGNITOR 10. HONEYWELL PILOT BURNER 12. FAN TIME DELAY SWITCH 13.
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OPERATION (continued) NOTICE: There may be momentary and spasmodic orange flashes in the flame. This is caused by the burning of airborne dust particles, and not to be confused with the yellow tipping, which is a stable or permanent situation when there is insufficient primary air. Table 6 - Main Burner Orifice Schedule* * INPUT IN 1000 BTU 100 125 150 175 200 225 250 300 350 400 TYPE OF GAS NATURAL PROPANE HEATING VALUE 1075 BTU/Ft3 2500 BTU/Ft3 (40.1 MJ/m3) (93.1 MJ/m3) 3.5 inch WC (0.
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MAINTENANCE 3. To clean or replace the main burners, remove the bottom panel and compress the spring by moving the burner toward the manifold. Slide the opposite end of the burner downward from the locating slot while retaining spring is still compressed. Pull the burners away from the heat. 4. With the burners removed, wire brush the inside surfaces of the heat exchanger. 5. Remove any dirt, dust, or other foreign matter from the burners using a wire brush and/or compressed air.
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IDENTIFICATION OF PARTS Figure 14 - Combustion Chamber Figure 15 - Internal Furnace Assembly GAS VALVE MANIFOLD PILOT ASSY. MAIN BURNERS RETAINER SPRING AIR SHUTTERS Figure 16 - Separated Combustion Unit Heater PRESSURE SWITCH POWER VENT ASSY.
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Table 7 - Power Vented Propellers Troubleshooting Guide SYMPTOMS A. Flame lifting from burner ports. POSSIBLE CAUSE(S) 1. Pressure regulator set too high. 2. Defective Regulator. 3. Burner orifice too large. CORRECTIVE ACTION 1. Reset manifold pressure. Refer to “Operation”. 2. Replace regulator section of combination gas valve or complete valve. 3. Check with local gas supplier for proper orifice size and replace. Refer to “Operation”. B. Flame pops back. 1. Excessive primary air. 2.
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Power Vented Propellers Troubleshooting Guide SYMPTOMS H. Failure to ignite. POSSIBLE CAUSE(S) 7. Defective thermostat. 8. Defective transformer. 9. Loose wiring. 10. Defective ignition control. CORRECTIVE ACTION 7. Check thermostat and replace if defective. 8. Be sure 115 volts is supplied to the transformer primary, then check for 24 volts at secondary terminal before replacing. 9. Check and tighten all wiring connections per diagrams. 10. Replace, if necessary. Also see W, X & Y symptoms. J.
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Power Vented Propellers Troubleshooting Guide SYMPTOMS O. Fan will not run. POSSIBLE CAUSE(S) 1. Loose wiring. 2. Defective motor overload protector or defective motor. 3. Defective fan switch. P. Fan motor turns on and off while burner is operating. 1. Fan switch heater element improperly wired. 2. Defective fan switch. 3. Motor overload protector cycling on and off. 4. Motor not properly oiled. Q. Fan motor will not stop. R. Not enough heat. CORRECTIVE ACTION 1.
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Power Vented Propellers Troubleshooting Guide SYMPTOMS X. Spark present but pilot does not light. POSSIBLE CAUSE(S) 1. Loose S8600 connections. 2. Improper gas pressure. 3. Is spark in pilot gas stream? 4. No pilot gas — do not use match to test - presence of gas is easily detected by the odor. Y. Pilot lights — Main valve does not energize. 1. Loose S8600 connections. 2. Cracked or broken sensor ceramic. 3. Check sensor/spark lead for continuity. 4. Measure 24 volts from term. MV to term. MV/PV.
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Figure 17 - Power Venter Assembly REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 REF. NO. 14 15 16 17 18 19 20 21 22 23 24 25 DESCRIPTION Blower Housing Assembly Speed Nut Motor Washer, Plain Plate Adapter Blower Wheel* Mounting Bracket (Pressure Switch) Mounting Bracket (Junction Box) Screw, S.T. Screw, Machine (L = 3/4 inch) Nut, Keps (Ext.
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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. • Model number • Serial Number (if any) • Part description and Number as shown in the Replacement Parts Catalog. LIMITED WARRANTY SEPARATED COMBUSTION PROPELLER UNIT HEATERS 1.
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SEPARATED COMBUSTION PROPELLER UNIT NUMBER DESCRIPTION Digit Item X X X X — 1 Prefix 2 UT 3 4 CA 5 6 7 8 FT FM GT 9 10 11 12 13 14 15 + IC AL GC SV MT MS AS (Internal use Only) Digit #1, 2 - Unit Type [UT] Digit #13 - Motor Type [MT] P3 - Separated Combustion Propeller 1 - Open Drip Proof 2 - Totally Enclosed Digit #3, 4, 5 - Capacity [CA] Digit #14 - Blower Motor Sizes [MS] 100 - 100,000 BTU/HR 125 - 125,000 BTU/HR 150 - 150,000 BTU/HR 175 - 175,000 BTU/HR 200 - 200,000 BTU/HR 250 -
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NOTES: 30
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NOTES: 31
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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 Duct Furnace Indoor Rooftop Serial Number _________________________ Model Number __________________________ Name Plate Voltage: _____________ Name Plate Amperage: _____________ Type of Gas: Natural Tank Capacity _______ lbs.