Instructions / Assembly

ManualsBrandsModine ManualsGarage HeatersPDP 175,000 BTU Natural Gas Vertical Power Vented Unit Heater

February, 2004

INSTALLATION AND SERVICE MANUAL

gas-fired unit heaters

model PDP

6-579.2

5H78211A Rev. C

WARNING

Improper installation, adjustment, alteration,

service or maintenance can cause property

damage, injury or death, and could cause

exposure to substances which have been

determined by various state agencies to cause

cancer, birth defects or other reproductive

harm. Read the installation, operating and

maintenance instructions thoroughly before

installing or servicing this equipment.

All models approved for use in California by the CEC (when

equipped with IPI), in New York by the MEA division, and in

Massachusetts. Unit heater is certified for non-residential

applications.

Inspection on Arrival

1. Inspect unit upon arrival. In case of damage, report

immediately to transportation company and your local

Modine sales representative.

Check rating plate on unit to verify that power supply meets

available electric power at the point of installation.

3. Inspect unit received for conformance with description of

product ordered (including specifications where applicable).

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Don’t touch electrical switches.

3. Extinguish any open flame.

4. Immediately call your gas supplier.

CAUTION

To prevent premature heat exchanger failure

do not locate ANY gas-fired units in areas

where chlorinated, halogenated, or acid

vapors are present in the atmosphere.

IMPORTANT

The use of this manual is specifically intended

for a qualified installation and service agency.

A qualified installation and service agency must

perform all installation and service of these

appliances.

FOR YOUR SAFETY

The use and storage of gasoline or other

flammable vapors and liquids in open containers

in the vicinity of this appliance is hazardous.

THIS MANUAL IS THE PROPERTY OF THE OWNER.

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.

Summary of content (20 pages)

PAGE 1
6-579.2 5H78211A Rev. C February, 2004 INSTALLATION AND SERVICE MANUAL gas-fired unit heaters model PDP All models approved for use in California by the CEC (when equipped with IPI), in New York by the MEA division, and in Massachusetts. Unit heater is certified for non-residential applications.
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SPECIAL PRECAUTIONS / TABLE OF CONTENTS SPECIAL PRECAUTIONS THE INSTALLATION AND MAINTENANCE INSTRUCTIONS IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE SAFE, EFFICIENT AND TROUBLE-FREE OPERATION. IN ADDITION, PARTICULAR CARE MUST BE EXERCISED REGARDING THE SPECIAL PRECAUTIONS LISTED BELOW. FAILURE TO PROPERLY ADDRESS THESE CRITICAL AREAS COULD RESULT IN PROPERTY DAMAGE OR LOSS, PERSONAL INJURY, OR DEATH. THESE INSTRUCTIONS ARE SUBJECT TO ANY MORE RESTRICTIVE LOCAL OR NATIONAL CODES. HAZARD INTENSITY LEVELS 1.
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SI (METRIC) CONVERSION FACTORS / UNIT LOCATION SI (METRIC) CONVERSION FACTORS Table 3.1 To Convert Multiply By To Obtain "W.C. 0.24 kPa psig 6.893 kPa °F (°F-32) x 0.555 °C inches 25.4 mm feet 0.305 meters CFM 0.028 m3/min To Convert Multiply By To Obtain CFH 1.699 m3/min Btu/ft3 0.0374 mJ/m3 pound 0.453 kg Btu/hr 0.000293 kW/hr gallons 3.785 liters psig 27.7 "W.C. 11.
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UNIT LOCATION Sound and Vibration Levels All standard mechanical equipment generates some sound and vibration that may require attenuation. Libraries, private offices and hospital facilities will require more attenuation, and in such cases, an acoustical consultant may be retained to assist in the application. Locating the equipment away from the critical area is desirable within ducting limitations. Generally, a unit should be located within 15 feet of a primary support beam.
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INSTALLATION Venting WARNING 1. Gas fired heating equipment must be vented - do not operate unvented. 2. A built-in power exhauster is provided - additional external power exhausters are not required or permitted. Note: A vent is the vertical passageway used to convey flue gases from the unit or the vent connector to the outside atmosphere. A vent connector is the pipe which connects the unit to a vent or chimney.
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INSTALLATION Table 6.1 Vent Pipe Diameters, Transitions, and Total Equivalent Vent Pipe Lengths for Horizontal Vent Systems. Figure 6.
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INSTALLATION Figure 7.1 Vent Construction Through Combustible Walls 1. FIBER GLASS INSULATION MIN. 2" METAL SLEEVE 2" MIN. VENT PIPE DIAMETER 2. METAL FACE PLATE METAL SLEEVE 1" 9" 2" MIN. 1" VENT TERMINATION SUPPORT BRACKET (where required) (Make from 1" x 1" steel angle) 45° 9" Figure 7.
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INSTALLATION Table 8.1 Gas Pipe Capacities Gas Pipe Capacities (Up to 14” W.C. Gas Pressure through Schedule 40 Pipe) Cubic Feet per Hour with Pressure Drop of 0.3” W.C. Natural Gas - Specific Gravity - 0.60 Propane Gas - Specific Gravity - 1.
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START-UP PROCEDURE not light, purge the pilot line. If air purging is required, disconnect the pilot line at outlet of pilot valve. In no case should line be purged into heat exchanger. Check the pilot flame length (See Pilot Flame Adjustment). IMPORTANT Start-up and adjustment procedures should be performed by a qualified service agency. 1. Turn off power to the unit at the disconnect switch. Check that fuses or circuit breakers are in place and sized correctly.
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START-UP PROCEDURE Figure 10.2 Typical Combination Gas Control Figure 10.1 Correct Pilot Flame 3/4" to 1" GAS CONTROL KNOB PRESSURE REGULATOR ADJUSTMENT SCREW (UNDER CAP SCREW) INLET PRESSURE TAP OUTLET PRESSURE TAP OUTLET INLET PILOT TUBING CONNECTION RESET BUTTON PILOT ADJUSTMENT SCREW Main Burner Adjustment Burner Flame Adjustment The gas pressure regulator (integral to the combination gas control) is adjusted at the factory for average gas conditions.
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Figure 11.2 - Air Shutter Adjustment, Propane Gas START-UP PROCEDURE MANIFOLD Table 11.1 Manifold Pressure & Gas Consumption ➀ BTU/Cu. Ft. Model Specific Gravity Manifold Pressure In. W.C. Natural 1050 0.60 3.5 Propane 2500 1.53 10.0 No. of Orifices PDP 30 CFH Gal/Hr. Propane Orifice Drill Size 28.6 – 38 12.0 .33 52 1 PDP 50 BDP 50 CFH Gal/Hr. Propane Orifice Drill Size 47.6 – 30 20.0 .55 45 1 PDP 75 BDP 75 CFH Gal/Hr. Propane Orifice Drill Size 71.4 – 21 30.0 .
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START-UP PROCEDURE Two-Stage Gas Controls (intermittent pilot) 5. Utilizes a two-stage combination gas control, an ignition control, and a two-stage low voltage thermostat. The unit fires at 50% fire on low stage and 100% fire on high stage. The main gas valve is opened and the main burner is lit to 50% fire. 6. The air mover starts after 30 to 90 seconds. 7. If the temperature at the thermostat continues to fall, the thermostat will call for high stage heat. 8.
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OPTIONS Figure 13.1 Factory Mounted Option Location ➇ ⑥ for approximately 30 to 90 seconds before the blower starts. This allows the heat exchanger a warm up period so that the initial delivered air is not cool. The time delay relay also keeps the motor running for approximately 30 - 90 seconds after the call for heat has been satisfied to remove the residual heat from the heat exchanger. For single-phase units below 2 Hp, the time delay relay controls the motor directly.
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GENERAL PERFORMANCE DATA Table 14.1 - Performance — Propeller Models ➀ ➁ Standard PDP 30 Btu/Hr. Input 30,000 Btu/Hr. Output 24,000 Entering Airflow (CFM) 440 Outlet Velocity 515 Air Temp. Rise (°F) 51 Max. Mounting Hgt. (Ft) ➂ 7 Heat Throw (Ft) ➂ (Max. Mtg. Hgt.
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DIMENSIONAL DATA Propeller Units - Model PDP Figure 15.1 Dimensional Drawings M C A H F W K AA X DD CC G J K E B LL BB EE L (MIN. DISTANCE TO WALL) D (OPENING) Table 15.1 Dimensions (inches) — PDP ➀ Dimension Symbol PDP 30 A 12-7/8 B 24-1/4 C 14-3/4 D 10-7/16 E 13 F 9-1/4 G 5-1/2 H 9-1/4 J➁ 3 or 4 K (Mounting 3/8-16 Holes) ➂ L➃ 28-7/16 M 22-7/16 W – X – AA 5 BB 6-1/4 CC 11/16 DD 2-5/8 EE 22-1/4 LL 19-1/2 Gas Connections ➄ 1/2 Fan Diameter 9 Approx.
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MAINTENANCE All heating equipment should be serviced before each heating season to assure proper operations. The following items may be required to have more frequent service schedule based on the environment in which the unit is installed, and the frequency of the equipment operation. 10. Check the ground union joint for leaks with a soap solution. Tighten if necessary. Burner and Pilot Assembly Removal To remove the burner General Unit 1. Shut off gas and electric supply.
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SERVICE & TROUBLESHOOTING WARNING CAUTION When servicing or repairing this equipment, use only factoryapproved service replacement parts. A complete replacement parts list may be obtained by contacting Modine Manufacturing Company. Refer to the rating plate on the appliance for complete appliance model number, serial number, and company address. Any substitution of parts or controls not approved by the factory will be at the owner’s risk.
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SERVICE & TROUBLESHOOTING Trouble Possible Cause Possible Remedy Flashback 1. 2. 3. Too much primary air Main pressure set too high. Orifice too large. 1. 2. 3. Floating Flames (See Figure 18.3) 1. 2. 3. Insufficient primary air. Main pressure set too high. Orifice too large. 1. 2. 3. 4. Blocked vent. 4. 1. 2. Main pressure set too high. Orifice too large. 1. 2. 3. Blocked vent. 3. 1. Unit cycling on high limit. ➀ a. Obstructions/leaks in duct system. b. Main pressure set too high. c.
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RATING PLATE IDENTIFICATION Figure 19.1 - Serial Number Designations Figure 19.2 - Model Number Designations 01 12 101 10 97 MOTOR SUPPLIER CODE 01 Century 05 Universal etc. FAN OR BLOWER SUPPLIER CODE 01 Revcor 08 Brookside etc. SERIES IDENTITY NUMBER Identifies which series of controls were furnished on the unit. PDP YEAR OF MANUFACTURE 97 1997 98 1998 etc. WEEK OF MANUFACTURE 10 10th week of 1997 25 25th week of 1997 etc.
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WARRANTY Seller warrants its products to be free from defects in material and workmanship, EXCLUSIVE, HOWEVER, of failures attributable to the use of materials substituted under emergency conditions for materials normally employed.