i. Tech 3 OSDs User Manual

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OSD SERIES

DIRECT GAS-FIRED AIR HEATER

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

FOR USE ONLY IN PAINT SPRAY BOOTHS AND DRYING OVEN APPLICATIONS

READ MANUAL CAREFULY BEFORE INSTALLING

OR OPERATING THE FURNACE

FOR YOUR SAFETY FOR YOUR SAFETY

If you smell gas follow these instructions, The use and storage of gasoline or other flammable

1) Open windows. vapors and liquids in open containers in the

2) Do not touch electrical switches. vicinity of this appliance is hazardous.

3) Extinguish any open flame.

4) Call the gas supplier immediately.

MODEL: SERIAL NUMBER:

JOB: DATE OF INSTALLATION:

WARNING

IMPROPER INSTALLATION, ADJUSTMENT, SERVICE OR MAINTENANCE CAN

CAUSE PROPERTY DAMAGE, INJURY OR DEATH. PLEASE READ THE

INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTION

THOROUGHLY.

*THIS UNIT IS TO BE SERVICED BY QUALIFIED PERSONNEL*

**DO NOT TAMPER WITH THE UNIT OR CONTROLS**

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, 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.

THIS EQUIPMENT SHALL BE INSTALLED AND WIRED IN ACCORDANCE WITH THE REGULATIONS OF THE NATIONAL BOARD OF FIRE UNDERWRITERS, CANADIAN ELECTRIC CODE AND LOCAL GOVERNING BODIES. THE INSTALLAION CODE FOR “GAS BURNING, APPLIANCES AND EQUIPMENT, CAN 1-B149”, AND APPLICALBLE PROVINCIAL REGULATIONS FOR THE CLASS, WHICH SHOULD BE FOLLOWED CAREFULLY IN ALL CASES.

INSTALLER/SERVICE CONTRACTOR

NAME:

ADDRESS:

TELEPHONE:

CONTACT:

GENERAL INFORMATION

GENERAL NOTES

This Direct Fired OSD Spray/Bake Unit, dual air dual temperature unit is designed to provide make up air to satisfy the exhaust requirement of the paint spray booth. 100% volume on the spray cycle and 50% volume on the dry cycle. Normal discharge temperature on spray cycle is between 70° F and 80° F. Normal discharge temperature on dry cycle is between 120° F and 180° F. The sequence of operation and wiring diagram are located in the weather housing on out door units and burner compartments of indoor unit.

WARNING

Fire or Explosion hazard can cause property damage, severe injury or death. Ensure that all air taken into the unit is free from the presence of:

a) Flammable solids, liquids and gases. b) Explosive materials. Example: grain dust, coal dust, gun powder etc. c) Substance which may be come toxic when exposed to heat or passing through a gas flame.

INSTALLATION AND SERVICE INSTRUCTIONS

The information provided is a guide to the proper installation, operation and troubleshooting of the unit. Retain the manual as a reference for operation and maintenance personnel. Should contact with the factory be necessary, provide the unit model number and serial number. Install and wire the equipment in accordance with the applicable national and local governing bodies codes. Authorities having jurisdiction should be consulted before making the installation. Local codes may require additional safety controls and/or interlocks.

UNIT LOCATION

Prior to locating the unit check with the authorities having jurisdiction. The unit should be located with clearance to open access doors and remove filters. Ensure that the unit is installed level. Provide adequate clearance on either side of the unit to service blower, bearings, motors, drives and filters. Ensure that the position of the heater relative to support beams is correct so as to provide adequate support for the equipment. For roof mounted units, check the spacing of the roof structure beams to avoid interference with air ducts.

LOCATION OF ACCESSORIES

The remote panel will be shipped as a separate package. Mount the panel and have an electrical contractor install wiring.

FACTORY TESTING & START UP CHECKLIST

All OSD series units are factory fired and tested prior to shipping. Each unit is shipped with the tester’s report and a start-up checklist. Complete the start-up checklist and return one copy to the factory.

INSPECTION OF EQUIPMENT

All shipments are made F.O.B. the factory. The unit is securely strapped or blocked to prevent shipping damage and each shipment inspected prior to leaving the plant. All parts, where feasible, are strapped to or included in the unit. Upon receipt of goods, check the shipment against the bill of lading to ensure all items have been received. Carefully check the unit for physical damage in the presence of the carrier’s representative. Should parts be missing or damage noted, file a claim immediately with the carrier. ICE does not assume responsibility for the handling of the goods in transit and is not responsible for the initiation of freight claims.

INSTALLATION AND SERVICE INSTRUCTIONS

Direct Gas Fired Air Heaters

LOCATION OF UNIT AND DISTRIBUTION

Inlet

The intake shall be designed and located to prevent snow, rain, flammable gas, toxic gases and other deleterious materials from entering the unit. (Less than 500 F.P.M. is an accepted velocity.)

INSTALLATION

Smaller models are shipped as one total unit. All other models are shipped in sections that are easily erected on the job site. The main sections consist of a burner damper section that contains the motor, and a blower section. The secondary sections are the filter, louver, mixing box etc., which are added in sections as required.

1. All sections are pre-drilled and are bolted together in the field (as per Figure 1).

2. Belts must be installed on the motor, and limit and discharge controls may have to be mounted and/or wired.

3. When clearance is not a factor, ensure that the unit is adequately protected from obstruction.

NOTE: On roof top units the joints will have to be caulked to prevent rain from entering the unit.

Indoor Suspension

On indoor models holes at the base of the units are provided for 5/8” suspension rods (see Figure 6). Unit must be lifted and handled from the lifting holes provided at each end of the channel iron, when suspending from the ceiling. If units are to be lifted from the bottom for mounting on a platform (as with a forklift), unit must be supported.

NOTE: DO NOT LIFT CABINET WITHOUT THIS SUPPORT.

Rooftop Installation

Support rails (minimum of 4” high) must be provided underneath the unit. In some cases, more height may be required when installing the supply duct through the roof (see Figure 1) or if a unit is a bottom discharge (see Figure 2).

Minimum clearance from the unit, to combustible construction, is clearly marked on the rating plate attached to the unit.

No source of flammable vapors, gases or dust shall be with in 20’ horizontally of any unit unless that source is separated from the unit by an enclosure of fire and vapor resistive materials.

On indoor suspended units, when necessary to provide working clearance beneath the unit, the installation shall be made at a suitable height above the floor.

CONNECT DUCTWORK

1. On indoor units, install fresh air duct to inlet of unit. Install intake hood or louvers with screen.

a) Make required opening in wall and line with angle frame inside. Should be completed before outside is started to

avoid crumbling.

b) Insert insulated fresh air “collar” through opening with flanges turned out to provide rigidity.

c) Anchor intake hood with birdscreen to wall.

d) Caulk perimeter of opening to make rain tight.

2. Connect discharge air duct or discharge grille to unit outlet. If unit is installed on a roof, be sure that the duct going

through the roof is adequately flashed and sealed to prevent leakage (see Figure 1).

3. Where a ductwork system or other enclosure is directly connected to the inlet or outlet of the heater is such a way as to

cause a possible gas trap and accumulation of a flammable mixture, a pre-purge cycle shall be incorporated to provide not less than 4 complete air changes of the ductwork or enclosure by volume prior to an ignition.

4. Where additional automatically operated inlet or discharge air louvers are used, they shall be electric interlocked to

ensure the maximum designed opening before either starting or running circuits may be energized.

EXHAUST INTERLOCK

a) This unit shall be electrically interlocked so that it will operate only when the associated exhaust system(s) is

functioning. An exhaust airflow proving switch shall be used (Refer to sheet exhaust interlock). For typical application, and (wiring diagram) for electric hookup.

b) The total air discharge capacity of the unit must not exceed by more than 10% the total discharge capacity of

the exhaust systems in conjunction with which it is used. Where the tempered air is discharged directly into a booth, the total air discharge capacity of the booth.

c) The exhaust air proving switches should be set as to open when the volume of exhaust drops by more than

10% (dirty exhaust filters, etc.).

CONNECT GAS SUPPLY

a) Run correctly sized gas line to the unit. Install manual shut off valve plug-cock type approved for the application.

NOTE: Gas line pressure must be a least 7” W.C” when unit is operating at full input (Burner manifold pressure at full input is from 4” to 4 ½” W.C.) Check rating plate on unit for maximum gas input.

b) Bleed and vent lines shall be installed in accordance with the applicable requirements.

COMPLETE WIRING

1. Install remote supervisor panel or if summer-off-winter switch (is used) in the desired location.

2. Complete wiring to supervisor panel or summer-off-winter switch as shown on wiring diagram.

3. Install fused disconnect switch (to be furnished by installer) and connect 3 phase power supply to disconnect

switch mounted on unit. Voltage must correspond to voltage marked on rating plate.

4. Complete all wiring to accessories (interlocks) as per wiring diagram provided on the unit.

NOTE: It is recommended that filters be removed during winter operation, if up stream from burner.

WARNING

FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR

DEATH.

Check for gas leaks with rich soap and water solution any time work is done on a gas control.

START-UP PROCEDURE

1. Remove shipping blocks from:

a) Blower if rubber or spring isolated. b) Check to be sure that damper opens, if tied down, remove wire. c) Check modulating discharge controller, on units, to ensure that it is in the blower air stream. On some units this

control may be mounted external from the unit. If so, check to see that the sensor installed is the discharge air stream of the heater air and that the controller is wired to the modulating motor, regulating gas supply to burner.

2. Make sure that the main firing valve is closed, but that gas is available in the service line.

3. Check to ensure exhaust fans are wired into the control panel and that there is power to the exhaust starter relays.

Check to ensure exhaust fans interlock switches are installed and wired to the control panel.

4. Familiarize yourself with the sequence of operation and wiring diagrams this will give you information as to how the

unit operates in the paint and cure modes.

5. Check voltage to ensure it matches the voltage stamped on the unit rating plate, and all wires are connected between

unit and remote panel.

6. The timers TD-1 - TD-5 are factory set but you should check them to ensure they have not moved during transit to job

site.

a) Normal setting of high limits are paint mode -165°F cure mode -200°F auto reset.

7. Operate unit through paint mode by pushing in the system “on” push button. The unit should operate as per sequence

of operation.

a) Pilot

The Protector relay monitors the pilot flame through the flame rod. A minute current is sent from the relay through the flame rod, and trough the pilot flame to “ground”. The relay detects the current flow and acts to open the safety valve as required. When no flame exists, current cannot flow and the relay acts to close the valve. Current flow depends only on flame contact on the rod: temperature of the rod is of no importance.

Since the flame rod is a current-carrying conductor, it must be free of any contact with conductive parts of the pilot burner. Insulator must be clean, dry and free from cracks. While the flame rod is made of a heat resistant alloy it may, after long service, deteriorate to the point of flame contact. Check for serious corrosion or loss of metal. It must be tight enough in the insulator to maintain its position. Do not use too much force or the insulator may crack.

Proper operation of the flame rod can be checked by measuring the flame rod current; refer to flame safeguard instruction sheet with unit. Lacking a micrometer, a check can be made with an operating burner through all its normal phases. Relay response should be prompt with no chattering or drop out.

The spark rod (Midco Burner see Figure 5 for gap setting, Maxon Burner spark ignitor No. 18075) produces a high tension arc at the correct location for lighting the pilot. Ignition transformer must be rated for 6000 Volts, 20 Milliampers secondary, minimum.

The spark rod or spark ignitor, must be free of contact with conductive parts of the pilot burner. Insulator must be clean, dry and free of cracks. Check the spark rod for serious corrosion or loss of metal. It must be held tightly enough is the insulator to maintain its position.

Gap must be 1/16” to 3/32” (see Figure 5). Setting can also be checked by cycling the pilot. Ignition must be prompt and positive. Do not allow careless positioning to cause arc of flame rod; serious relay damage would result.

The spark ignitor on Maxon burners, if ignitor shows deterioration of ignitor points the complete spark ignitor should be replaced part No. 18075.

8. If pilot tries for ignition, but locks out, the air proving switches (high and low) that are mounted across the profile

plate, should be checked to make sure that the proper amount of air is flowing through the unit. Check to make sure blowers are running in the proper direction. This can be checked by placing a differential gauge across the profile plate of the burner section. If the pressure drop is between .30” W.C., and .95” W.C., these switches should be made, then check pilot to ensure proper flame. Check instruction sheet for flame safeguard system.

Pilot adjustment screw is in the Thermax shut-off valve. When setting, adjust for the best reading, then open pilot set screw slightly.

a) Main flame supervision: With units that have more than three feet of burner from point or supervision, a second

flame rod will be on the main burner. This switching is done with a time delay relay. See wiring diagram. This can be disconnected for testing for pilot, or you have to ensure main flame by opening up the firing valve within 15 seconds after pilot solenoid is powered. As supervision will switch from pilot to main flame in that time. Check to ensure that unit will lockout in the event of main flame failure on low-fire by closing main firing valve.

9. Gradually open firing valve to start main flame. Check for flame over entire burner length. Adjust the pressure

regulator to 4” or 4 ½ ” W.C. pressure or the amount of gas marked on the rating plate.

10. All OSD units may have Maxitrol modulation. Read over the Maxitrol literature for the high fire and low fire setting.

By removing the wire from #2 on the amplifier the unit will stay on low fire and allow you to set the by pass or low fire setting to ensure that the flame is completely across burner and is between 1” and 1½ ” long (see literature supplied with unit).

11. To set up high fire you will require spray test resistor 1.10K, dry (cure) test resistor 1.21K. These are attached to the

Maxitrol literature. These resistors should be placed across #3 and #4 of the amplifier on the unit (remove when test is complete).

a) Check gas pressure switch setting.

High pressure gas switch …………………………………..…… 6” W.C. Low pressure gas switch ………………………………….……. 2” W.C.

NOTE: The high and low gas pressure switches may be the manual reset type on some units.

FLAME SUPERVISION CHECK

a) The flame supervision should be checked periodically to insure that the controls are operational. With the unit

on full operation and firing, close the main manual firing valve and pilot manual firing valve. This should lock out the unit.

b) The units with more than 3 feet of burner from the point of supervision have dual flame rod and a delay timer for

main flame supervision. Closing the main firing valve should lock out the safety relay and the unit should shutdown.

c) The main safety valve should be checked for gas tightness by placing a manometer in the manifold between the

safety valve and the manual firing valve (a 1/8” plug is provided for this). If there is a build up of pressure with the unit locked out and the manual valve closed, the safety valve should be replaced.

d) The complete gas line and manifold should be checked for gas tightness.

C.F.M.

a) This unit depends upon an adequate supply of air for good combustion and operation. Care should be taken to

ensure that properly sized inlet hood and ductwork are installed and that the unit is discharging the right amount of CFM.

TROUBLE SHOOTING GUIDE

On start up, the unit will not operate properly. It may be an electrical mix up in the wire from the unit to the control panel (see wiring drawing).

The wire connector shown 12 are in the remote panel. The wire connector shown E12 are on the unit. It is recommended you have a volt meter AC/DC, and a differential pressure gauge 0” - 2” (magnehelic) and a gas pressure gauge 0” - 12”.

SPRAY MODE

1. If inlet damper fails to open when system switch is pushed in.

a) Check to see if power is on #4. If no power supply starter overloads (1 OLS-1), may be open R1-1

normally closed contacts may be open. Main flame safe guard relay needs to be reset.

2. Fresh air damper open, but no power on #9.

a) Damper end switch open (DMES-1) reset.

3. High exhaust fan operating, no power on #13.

a) Check high exhaust fan inter lock switch.

4. If supply fan is not operating, check delay start timer (TD1) normally set at 3 seconds to allow for exhaust fan

to come up to speed to keep the booth from over pressure and blow the doors open.

a) Balance exhaust and supply fan.

5. No power on #40.

a) Check summer/winter switch.

b) Spray high limit (HL-S).

c) Check air flow across burner with a magnehelic gauge to ensure proper air flow. Should be a difference

between .45” and .65” W.C.

6. Power on #40, but burner will not come on.

a) Change flame safe guard relay.

7. Power on #40 burner tries to fire up but locks out.

a) Check pilot solenoid valve.

b) Check ignition transformer.

c) Check flame rod, if dirty clean, if cracked isolator replace.

Burner on low fire only.

a) Check TD2 timer low fire timer should be set at 20 seconds.

b) Check DC volts on #55 and #57, if above 5 V.D.C. modulation valve may be defective, replace.

9. See Maxitrol literature to trouble shoot the system.

NOTE: On custom built units the number designation may change.

Carefully check wire diagram supplied with unit.

BAKE MODE

1. Purge light “off”, dry cycle light not “on”.

a) Check and replace.

2. Burner not on, no power on #40.

a) Check dry high limit (HL-B). b) Check low exhaust inter lock. c) Check high and low profile air switches. d) Check profile damper should be closed below burner.

3. Power on #40 burner not on. See instruction spray mode 5, 6, 7, and 8.

4. Burner on, but will not operate up to selector set point.

a) Check to see if temperature delay timer TD4 is powered and switch over from #12 to #11, on the

Maxitrol, amplifier is completed.

b) Check discharge sensor. c) Refer to Maxitrol trouble shooting guide provided with this manual.

OPERATING PRINCIPLES OF THE RAW GAS BURNER

The raw gas burner is designed to operate in a duct of flowing fresh air. Fuel gas is fed directly to the burners; kinetic energy of the air stream furnishes combustion air. The burner must be installed to fire with, and parallel to, the air flow. By virtue of velocity impact and suction generated by the diverging shape of the combustion baffles, air is induced into the air ports in the combustion zone. The air supply is constant though only that which mixes with the gas flowing from the burner ports, takes part in combustion.

When a very small quantity of gas is admitted to the burner, sufficient mixing takes place in the low fire slot within the burner, casting and combustion takes place in this zone. Since the low fire zone is contained within the burner casting it is effectively shielded from fire disrupting uncontrolled air entry.

As the gas is increased the flame progresses into the intermediate fire zone where an additional supply of air is available. High or full capacity, mixing occurs at the larger air ports of the high fire zone augmented by air spilling over the end of the baffles.

On a reduction of gas supply the reverse sequence takes place. The flame receding to a location of lesser air supply until the low fire zone is reached. The system above is suitable for a turn down range of approximately 30 to 1.

With the suction by the blower there is a pressure in the gas manifold of less that zero at low fire. Therefore, when checking the manifold pressure you will find that the pressure will range from approximately 4” W.C. to less than zero, when the unit is modulating from high to low fire.

EXAMPLE FOR CALCULATING C.F.M.

Example for Calculating The Amount of Air and Gas in a Direct

Fired Make-Up Air Unit Pull Through Type

YOU WILL NEED: A pressure differential gauge (Manometer) (Magnehelic) Thermometer -30°F - 200 °F.

All units are factory set with a profile opening around to burner for 2950 F.P.M. velocity. Due to more or less external static pressure the velocity may not be within this range on start up of unit. The pressure drop should be checked to insure the unit is operating around this velocity.

A pulley adjustment or change should be done to bring the velocity within operating range. If an air balance has been done and the C.F.M. verified to be correct as stamped on the rating plate and the velocity across the burner is not correct the profile area should be adjusted.

If velocity is higher than 2950 FPM then the profile area should be increased. This can be achieved by readjusting the top and bottom profile plates.

The profile area is stamped on the rating plate, but to get to the free area you will have to deduct the space taken up by the burner.

If Midco burner is used deduct .65 sq. feet for each 1 foot section, or .33 sq. feet for each 6” section.

If Maxon burner is used deduct .45 sq. feet for each 1 foot section, or .23 sq. feet for each 6” section.

By using a magnehelic differential gauge across the burner profile will give you the pressure drop and using the burner capacity chart will tell you what velocity you have through the profile. If the unit is operating between .45 W.C. and .65 W.C. it is considered to be within operating range, as the low air switch is factory set to make at .25 W.C. and the high profile switch is set to open at .95 W.C.

This should allow for a wide leeway before the unit will lock out due to low air / high air velocity across the profile plate. Under normal servicing the tubes from the air switch should be checked to insure they are free of any moisture or dirt as this could cause the burner to lockout on the flame safeguard relay as both switches are in the flame rod circuit.

If moisture is entering the tubes they may have to be repositioned to a lower area on the cabinet. Care must be taken to insure that they will operate to shut down the unit if the velocity is out of the operating set points.

CAPACITY 1000’S BTU PER HOUR PER FOOT OF BURNER

NAT & GAS APPROXIMATE 100° RISE

______ CAPACITY ____ ____ ____ FLAME LENGTH

FIGURE A CAPACITY & FLAME LENGTH WITH VARIOUS AIR FLOWS

TABLE I

Btu/hr. Required for Each 1,000 C.F.M. of Fan Rating (at 70° F.)

LOWEST EXPECTED OUTSIDE TEMPERATURE (°F)DESIRED

DELIVERY

TEMP.

70°F 99,000 94,000 88,000 82,000 77,000 71,000 66,000 61,000 55,000 49,000 44,000 75°F 104,000 98,000 93,000 87,000 82,000 76,000 71,000 66,000 60,000 54,000 49,000 80°F 108,000 103,000 98,000 92,000 87,000 81,000 76,000 70,000 65,000 59,000 54,000 85°F 113,000 107,000 102,000 96,000 91,000 85,000 80,000 75,000 69,000 64,000 59,000 90°F 117,000 111,000 106,000 101,000 96,000 90,000 85,000 80,000 74,000 69,000 64,000 95°F 121,000 116,000 111,000 105,000 100,000 94,000 89,000 84,000 79,000 73,000 68,000

100°F 125,000 120,000 115,000 109,000 104,000 99,000 94,000 89,000 83,000 78,000 73,000

-20° -15° -10° -5° 0° 5° 10° 15° 20° 25° 30°

TYPE OF PROTECTION

SEE NOTE

TABLE II

PERMISSIBLE CLEARNCES WITH

SPECIFIED FORMS OF PROTECTION

(Clearance in Inches)

WHERE THE REQUIRED CLEARANCE WITH NO PROTECTION IS:

36 INCHES 18 INCHES 12 INCHES 6 INCHES

ABOVE SIDES

REAR

ABOVE SIDES

REAR

ABOVE SIDES

REAR

ABOVE SIDES

REAR

¼” asbestos millboard spaced out 1”*

28 gauge sheet metal on ¼” asbestos millboard

28 gauge sheet metal space out 1”*

28 gauge sheet metal on 1/8” asbestos millboard spaced out 1”*

1-½” asbestos cement covering on heating appliance

¼” asbestos millboard on 1” rockwool batts reinforced with wire mesh or equivalent

22 gauge sheet metal on 1” rockwool batts reinforced with wire mesh or equivalent

¼” asbestos cement board or ¼” asbestos millboard

¼” cellular asbestos

*Spacer shall be of non combustible material

LIMIT OF TOXIC VAPORS AND GASES

30 18 15 9 9 6 3 2

24 18 12 9 9 6 3 2

18 12 9 6 6 4 2 2

18 12 9 6 6 4 2 1

18 12 6 6 4 4 2 2

18 12 4 3 2 2 2 2

36 36 36 18 12 12 4 4

36 36 36 18 12 12 3 3

DURING NORMAL OPERATION OF THE HEATER, THE CONTENT OF TOXIC VAPORS AND GASES IN THE TEMPERED AIR AT THE POINT OF DISCHARGE INTO THE BUILDING MUST BE SUCH THAT NO IRRITATING EFFECTS ARE EVIDENT. THE INSTALLATION SHALL NOT BE CONSIDERED ACCEPTABLE IF THE DISCHARGE OF TOXIC PRODUCTS IS KNOWN TO EXCEED THE LIMITS SET OUT IN THE FOLLOWING TABLE.

SUBSTANCE PERCENT PPM SUBSTANCE PERCENT PPM

Acetaldehyde .001 10 Formaldehyde .000025 0.25 Carbon Dioxide .250 2500 Nitrogen Dioxide .0001 1 Carbon Monoxide .001 10 Sulfur Dioxide .00005 0.5

NOTE: At 100°F the CO2 concentration will be in the order of 2500 P.P.M.

TYPICAL SEQUENCE OF OPERATION

(WARNING: FOR ACTUAL UNIT SEQUENCE OF OPERATION, PLEASE CONSULT SHOP DRAWINGS)

OSD SPRAY/DRY UNIT SEQUENCE OF OPERATION

PB1000 REMOTE PANEL c/w PROGRAMMABLE LOGIC CONTROLLER (PLC)

Spray Mode

1. Lighting Contactors are always energized as long as main disconnect is on and Booth Lights Switch is in “ON”

position. Spray Gun Solenoid (by others) is energized only in Spray Cycle.

2. System “ON” Push Button is pressed and released the fresh air dampers open fully (100%) and the return air

dampers close fully (0%). When the fresh air damper end switch makes the exhaust fan motor starter is energized.

3. After a delay (adjustable from PICO Controller) the Supply Fan Motor Starter is energized.

4. Once the supply fan air proving switch has made both the Spray Cycle Light and Supply Fan Light are energized.

5. Burner is controlled by Burner Switch located on Remote Panel.

Dry Mode

Note: A set of normally closed contacts from a fire alarm are placed in series with PLC Input No. 4 so that in the event of a fire the Dry Cycle is shut down and the system reverts back to the Spray Cycle venting smoke to the outdoors through the unit.

1. Dry Mode Push Button is pressed and released. Spray Cycle Light is de-energized and Spray Gun Solenoid (by

others) is de-energized. Burner is still active (if burner switch is “ON”) discharging at Remote Temperature Selector Set Point.

2. Purge Cycle Timer (set to 180 seconds, adjustable from PICO Controller inside Remote Panel) is energized while

simultaneously energizing the Purge Cycle Light.

3. After 180 seconds, the Purge Cycle Light is de-energized. The Dry Timer (set to paint specifications, adjustable

from PICO Controller inside Remote Panel) is energized which will energize the override temperature set point on the Potentiometer located on the back of the Remote Panel Mounted Remote Temperature Selector, and the Dry Cycle Light.

4. The fresh air damper repositions for 20% fresh air and the return air damper repositions for 80% return air.

5. On expiration of the paint specification dry time, the override temperature set point on the Potentiometer and the Dry

Cycle Light are de-energized.

Cool Down Mode

1. The Cool Down Timer (adjustable from the PICO Controller inside Remote Panel) is energized while simultaneously

energizing the Cool Down Cycle Light.

2. The dampers reposition for 100% fresh air and 0% return air.

3. The burner (if Burner Switch is in “ON” Position) will discharge temperature as set at the Maxitrol spray mode set

point.

4. After the Cool Down Timer times out the system will shut down.

Timer Settings (Operator Programmable)

TD-1 Delay Exhaust Timer, Set 3 seconds (in PICO Controller) TD-2 Booth Door Delay Timer 5-30 seconds (in PICO Controller, set 15 seconds) TD-3 Purge Cycle Timer Set 3 minutes (in PICO Controller) TD-4 Dry Cycle Timer set as per Paint Specifications (in PICO Controller) TD-5 Cool-Down Cycle Timer Set 3 minutes (in PICO Controller)

Additional Notes

1. In spray mode if any of the booth doors are opened the spray gun solenoid valve will be de-energized after the door

delay timer has timed out (Operator Programmable in PICO Controller, 5-30 seconds).

2. In the dry mode if any of the booth doors are opened the unit will shut down after the door delay timer has timed out

(Operator Programmable in PICO Controller, 5-30 seconds).

DUAL AIR/TEMPERATURE SEQUENCE OF OPERATION

PB3000A REMOTE PANEL c/w PROGRAMMABLE LOGIC CONTROLLER (PLC)

Spray Mode

1. Three-position damper is powered continuously. Lighting Contactors (by others) are always energized as long as

main disconnect is on and Booth Lights Switch is in “ON” position. Spray Gun Solenoid (by others) is energized only in Spray Cycle.

2. System “ON” Push Button is pressed and released, energizing and supplies power to the Maxitrol Amplifier. Three

position damper motor opens the damper to 100% fresh air. Output 1 energizes the profile damper motor.

3. When the profile damper motor end switch is engaged, the High Speed Exhaust (Spray) Fan Starter is energized and

closes the High Exhaust Fan Air Proving Switch.

4. Delay Exhaust Start Timer (Set to 4 seconds) is energized.

5. After 4 seconds the Supply Fan Motor Starter Coil is energized, Spray Cycle Light and Supply Fan Light are

energized.

Dry Mode

1. Dry Mode Push Button is pressed and released. Spray Cycle Light is de-energized and Spray Gun Solenoid (by

others) is de-energized. Burner is still active discharging at 75°F.

2. Purge Cycle Timer (set to 180 seconds, adjustable from Operator Interface) is energized while simultaneously

energizing the Purge Cycle Light.

3. After 180 seconds, the Purge Cycle Light is de-energized. The Dry Timer (set to paint specifications, adjustable

from Operator Interface ) is energized which will energize the Spray/Dry Switch Over Timer (set to 10-20 seconds), relay R1, and the Dry Cycle Light.

4. After 10-20 seconds, the contacts on the Maxitrol Amplifier switch to set point 2 (preheat).

5. When R1 relay is energized, the three position damper motor travels the damper to the mid-position. The profile

damper motor is de-energized. The damper motor end switch de-energizes the High Speed Exhaust Fan Starter.

6. The High Exhaust Fan Air Proving Switch drops out, the Low Exhaust Speed Fan Air Proving Switch makes and the

Season Switch is disabled.

7. After 120 seconds the contacts on the Maxitrol amplifier switch to set point 3 (drying).

8. Expiration of the paint specification dry time, Dry Cycle Light, Spray/Dry Switch Over Timer, and relay R1 are de-

energized.

9. The three position damper returns to 100% fresh air. Unit will remain on until the System “OFF” Push Button is

manually pressed and released.

Timer Settings

TD-1 Delay Exhaust Start Timer 4 Seconds (in PLC) TD-2 Low Fire Delay Timer 20 Seconds (in unit panel) TD-3 Purge Cycle Timer 180 Seconds (in PLC, Operator Programmable) TD-5 Spray/Dry Switch Over Timer 10-20 Seconds (in PB3000 Panel) TD-6 Dry Mode Preheat Timer 120 Seconds (in PLC) Dry Timer set as per Paint Specifications (in PLC, Operator Programmable)

Limit Settings

High Limit Spray = 165°F, High Limit Dry = 200°F

RECIRCULATION SEQUENCE OF OPERATION

PB3000A REMOTE PANEL c/w PROGRAMMABLE LOGIC CONTROLLER (PLC)

Spray Mode

1. Three-position damper is powered continuously. Lighting Contactors (by others) are always energized as long as

main disconnect is on and Booth Lights Switch is in “ON” position. Spray Gun Solenoid (by others) is energized only in Spray Cycle.

2. System “ON” Push Button is pressed and released, energizing and supplies power to the Maxitrol Amplifier. Three

position damper motor opens the damper to 100% fresh air.

3. When three position damper motor end switch is engaged, the High Speed Exhaust (Spray) Fan Starter is energized

and closes the High Exhaust Fan Air Proving Switch.

4. Delay Exhaust Start Timer (Set to 4 seconds) is energized.

5. After 4 seconds the Supply Fan Motor Starter Coil is energized, Spray Cycle Light and Supply Fan Light are

energized.

Dry Mode

1. Dry Mode Push Button is pressed and released. Spray Cycle Light is de-energized and Spray Gun Solenoid (by

others) is de-energized. Burner is still active discharging at 75°F.

2. Purge Cycle Timer (set to 180 seconds, adjustable from Operator Interface) is energized while simultaneously

energizing the Purge Cycle Light.

3. After 180 seconds, the Purge Cycle Light is de-energized. The Dry Timer (set to paint specifications, adjustable

from Operator Interface ) is energized which will energize the Spray/Dry Switch Over Timer (set to 10-20 seconds), relay R1, and the Dry Cycle Light.

4. After 10-20 seconds, the contacts on the Maxitrol Amplifier switch to set point 2 (preheat).

5. When R1 relay is energized, the three position damper travels the damper to the mid-position. The damper motor

end switch de-energizes the High Speed Exhaust Fan Starter.

6. The High Exhaust Fan Air Proving Switch drops out, the Low Exhaust Speed Fan Air Proving Switch makes and the

Season Switch is disabled.

7. After 2 minutes the contacts on the Maxitrol Amplifier switch to set point 3 (drying).

8. Expiration of the paint specification dry time, Dry Cycle Light, Spray/Dry Switch Over Timer, and relay R1 are de-

energized.

9. The three position damper returns to 100% fresh air. Unit will remain on until the System “OFF” Push Button is

manually pressed and released.

Timer Settings

Limit Settings

High Limit Spray = 165°F, High Limit Dry = 200°F

DUAL AIR/TEMPERATURE SEQUENCE OF OPERATION

PB4000 REMOTE PANEL c/w PROGRAMMABLE LOGIC CONTROLLER (PLC)

Spray Mode

1. Three-position damper is powered continuously. Lighting Contactors (by others) are always energized as long as

main disconnect is on and Booth Lights Switch is in “ON” position. Spray Gun Solenoid (by others) is energized only in Spray Cycle.

2. System “ON” Push Button is pressed and released, energizing and supplies power to the Maxitrol Amplifier. Three

position damper motor opens the damper to 100% fresh air.

3. When the profile damper motor end switch is engaged, the High Speed Exhaust (Spray) Fan Starter is energized and

closes the High Exhaust Fan Air Proving Switch.

4. Delay Exhaust Start Timer (Set to 4 seconds) is energized.

5. After 4 seconds the Supply Fan Motor Starter Coil is energized, Spray Cycle Light and Supply Fan Light are

energized.

Dry Mode

1. Dry Mode Push Button is pressed and released. Spray Cycle Light is de-energized and Spray Gun Solenoid (by

others) is de-energized. Burner is still active discharging at 75°F.

2. Purge Cycle Timer (set to 180 seconds, adjustable from Operator Interface) is energized while simultaneously

energizing the Purge Cycle Light.

3. After 180 seconds, the Purge Cycle Light is de-energized. The Dry Timer (set to paint specifications, adjustable

from Operator Interface ) is energized which will energize the Spray/Dry Switch Over Timer (set to 10-20 seconds), relay R1, and the Dry Cycle Light.

4. After 10-20 seconds, the contacts on the Maxitrol Amplifier switch to set point 2 (preheat).

5. When R1 relay is energized, the three position damper motor travels the damper to the mid-position. The profile

damper motor is de-energized. The damper motor end switch de-energizes the High Speed Exhaust Fan Starter.

6. The High Exhaust Fan Air Proving Switch drops out, the Low Exhaust Speed Fan Air Proving Switch makes and the

Season Switch is disabled.

7. After 120 seconds the contacts on the Maxitrol amplifier switch to set point 3 (drying).

8. Expiration of the paint specification dry time, Dry Cycle Light, Spray/Dry Switch Over Timer, and relay R1 are de-

energized.

9. The three position damper returns to 100% fresh air.

Cool Down Mode

1. The profile damper motor is energized opening the profile to 100%.

2. The exhaust fan reverts back to high speed.

3. The unit will run on the low temperature setting (set point 1) and high cfm until the Cool Down Time has expired.

4. On expiration of the cool down time the unit shuts down.

Timer Settings

Limit Settings

High Limit Spray = 165°F, High Limit Dry = 200°F

RECIRCULATION SEQUENCE OF OPERATION

PB4000 REMOTE PANEL c/w PROGRAMMABLE LOGIC CONTROLLER (PLC)

Spray Mode

1. Three-position damper is powered continuously. Lighting Contactors are always energized as long as main

disconnect is on and Booth Lights Switch is in “ON” position. Spray Gun Solenoid (by others) is energized only in Spray Cycle.

2. System “ON” Push Button is pressed and released, energizing and supplies power to the Maxitrol Amplifier. Three

position damper motor opens the damper to 100% fresh air.

3. When the fresh air damper motor end switch is engaged, the High Speed Exhaust (Spray) Fan Starter is energized

and closes the High Exhaust Fan Air Proving Switch.

4. Delay Exhaust Start Timer (Set to 4 seconds) is energized.

5. After 4 seconds the Supply Fan Motor Starter Coil is energized, Spray Cycle Light and Supply Fan Light are

energized.

Dry Mode

1. Dry Mode Push Button is pressed and released. Spray Cycle Light is de-energized and Spray Gun Solenoid (by

others) is de-energized. Burner is still active discharging at 75°F.

2. Purge Cycle Timer (set to 180 seconds, adjustable from Operator Interface) is energized while simultaneously

energizing the Purge Cycle Light.

3. After 180 seconds, the Purge Cycle Light is de-energized. The Dry Timer (set to paint specifications, adjustable

from Operator Interface ) is energized which will energize the Spray/Dry Switch Over Timer (set to 10-20 seconds), relay R1, and the Dry Cycle Light.

4. After 10-20 seconds, the contacts on the Maxitrol Amplifier switch to set point 2 (preheat).

5. When R1 relay is energized, the three position damper motor travels the damper to the mid-position. The damper

motor end switch de-energizes the High Speed Exhaust Fan Starter.

6. The High Exhaust Fan Air Proving Switch drops out, the Low Exhaust Speed Fan Air Proving Switch makes and the

Season Switch is disabled.

7. After 120 seconds the contacts on the Maxitrol amplifier switch to set point 3 (drying).

8. Expiration of the paint specification dry time, Dry Cycle Light, Spray/Dry Switch Over Timer, and relay R1 are de-

energized.

9. The three position damper returns to 100% fresh air.

Cool Down Mode

1. The three position damper motor is energized opening the fresh air damper to 100%.

2. The exhaust fan reverts back to high speed.

3. The unit will run on the low temperature setting (set point 1) and high cfm until the Cool Down Time has expired.

4. On expiration of the cool down time the unit shuts down.

Timer Settings

Limit Settings

High Limit Spray = 165°F, High Limit Dry = 200°F

MAINTENANCE

Regular maintenance is necessary to ensure the efficient operation and long life of this unit. This maintenance should be performed by, or supervised by, qualified service personnel. A maintenance schedule should be prepared for the unit based on its application and location.

RECOMMENDED MONTHLY MAINTENANCE

1. Check for loose connections in the wiring.

2. Check the voltage at the unit while it is in operation.

3. Check motor amperage draws against rating plate values.

4. Inspect all contactors to ensure that they are clean and making good contact.

5. Check all fittings, valves and lines for leaks.

6. Check the burner; clean and adjust if necessary.

7. Check the flame sensor; clean if necessary.

8. Check the fuel supply pressure to the unit.

9. On gas fired units, check the manifold pressure.

10. Clean or replace air filters if necessary. Replace filters only with type equivalent to those supplied with the unit by

the factory.

11. Check all damper, linkages and damper actuators; adjust and tighten as required.

12. Check all belts; adjust or replace as necessary.

13. Check operation of all safety controls.

RECOMMENDED YEARLY MAINTENANCE

1. Perform the monthly maintenance recommended.

2. Inspect blower wheels and housing; clean if necessary.

3. Inspect all set screws on blower wheels and pulleys to ensure that they are secured to their respective shafts.

4. Check ignition spark and adjust gap if necessary.

5. Inspect and clean ignition electrodes.

6. Check flame supervisor relay.

7. Inspect all operating and safety controls; clean and replace if necessary.

8. Inspect the header box and secondary tubes through the access panels provided. Check for carbon deposits, soot,

scale, or rust; clean as required. Check condition of flue pipe.

9. Clean the primary combustion chamber.

10. Clean the burner.

NOTE: Refer to manufacturer literature provided for maintenance requirements of optional equipment.

BEARING INSTALLATION AND MAINTENANCE

NOTE: To prevent premature failure – please ensure greasing instructions below are applied. As well, tighten

bearing set screws, collars, and wheel lugs every four to six months.

ENGINEERING – BALL & ROLLER BEARINGS LUBRICATION

For bearings that are equipped with a hydraulic grease fitting threaded into the housing for ease of lubrication, the proper amount of lubricant in the bearing is important. Both excessive and inadequate lubrication may cause failure. The bearings should be re-lubricated while they are rotating (if it is safe to do so); the grease should be pumped in slowly until a slight bead forms around the seals. The bead in addition to acting as an indicator of adequate re-lubrication provides additional protection against the entry of foreign matter and helps flush out contaminates in the bearing.

By the time the slight bead is formed, it will be noticed that the bearing temperature will rise. It is not uncommon for the temperature to rise as much as 30 degrees Fahrenheit after re-lubrication. If necessary to re-lubricate while the bearing is idle, refer to the recommended re-lubrication grease chart tables on the following page for various sizes of the bearings.

Lubricant-Standard Bearings:

All bearing units are pre-lubricated at the factory with a lithium soap grease which is compatible with multi-purpose grease readily available from local suppliers. The lubricant selected for factory lubrication uses a highly refined mineral oil with a high viscosity index, thickened with lithium soap to conform to NLGI grade 2 consistency. A suitable additive package is added to protect the highly polished rolling contact surfaces from corrosion and oxidation of the lubricant. The lubricant is satisfactory for an operating temperature range of –30° F to 250° F.

Select standard industrial grade greases that conform to the following specification for optimum bearing performance:

General Duty Ball & Roller;

58-75 SUS @ 210° F 450-750 SUS @ 100° F

Premium Duty Ball & Roller;

68-75.1 SUS @ 210° F 600-750 SUS @ 100° F

Heavy Duty Roller Bearing;

82 SUS @ 210° F 886 SUS @ 100° F

NOTE: For heavy loaded roller bearing applications, grease with EP additives are often recommended for optimum performance.

TABLE III: RECOMMENDED LUBRICATION

Ball Bearings Roller Bearings

Shaft Size

(inches)

1/4 to 3/16 0.03 1-3/16 to 1-1/4 0.1

1/2 to 3/4 0.1 1-3/8 to 1-7/16 0.22

1-1/4 to 1-1/2 0.15 1-1/2 to 1-11/16 0.32

1-11/16 to 1-15/16 0.2 1-3/4 to 2 0.5

2 to 2-7/16 0.3 2 to 2-3/16 0.55

2-1/2 to 2-15/16 0.5 2-1/4 to 2-1/2 0.65

3 to 3-7/16 0.85 2-11/16 to 3 0.85

3-1/2 to 4 1.5 3-3/16 to 3-1/2 1.25

- - 3-15/16 to 4 2.5

- - 4-7/16 to 4-1/2 3.1

Frequency of re-lubrication depends upon operating conditions. The bearing operating temperature is the best index for determining a re-lubrication schedule. The following chart gives the frequency of re-lubrication based upon continuous operation for various operating temperatures and can be used as a satisfactory guide for determining when bearings should be re-lubricated.

Grease Charge

(ounces)

Shaft Size

(inches)

Grease Charge

(ounces)

TABLE IV. LUBRICATION FREQUENCY

Speed Temperature Cleanliness Greasing Interval

100 RPM Up to 120° F Clean 5 months

500 RPM Up to 130° F Clean 2 months

1000 RPM Up to 210° F Clean 2 weeks

1500 RPM Over 150° F Clean Weekly

Any speed Up to 150° F Dirty 1 week to 1 month

Any speed Over 150° F Dirty Daily to 1 week

Any speed Any temperature Very dirty Daily to 1 week

Any speed Any temperature Extreme conditions Daily to 1 week

TENSIONING V-BELT DRIVES

1. Ideal tension is the lowest tension at which the belt will not slip under peak load conditions.

2. Check tension frequently during the first 24-48 hours of operation.

3. Over-tensioning shortens the belt and bearing life.

4. Keep belts free from foreign material that may cause slip.

5. Make V-drive inspection on a periodic basis. Tension when slipping. Never apply belt dressing as this will

damage the belt and cause early failure.

Check and tighten belt tension. The following procedure is recommended for tightening belts:

a) Measure span “X” shown in Figure A. b) At the center of span length “X”, apply a force perpendicular to the span and large enough to deflect belt

1/64” for each inch of span length. Example- the required deflection for a 40” span would be 40/64” or 5/8”.

c) Compare the force applied with the values given in Table III. If force is between the minimum and

maximum range shown, the drive tension should be satisfactory. A force below the minimum value indicates an under tightened belt and force that exceeds the maximum value indicates an over tightened belt.

FIGURE A

FORCE

DEFLECTION 1/64" PER INCH OF SPAN

TABLE V

BELT CROSS MOTOR PULLEY DEFLECTION FORCE

SECTION PITCH DIAMETER MINIMUM MAXIMUM

(Marked on Belt)

3.0” - 3.6” 2.62lbs. 3.25lbs.

A 3.8” - 4.8” 3.0lbs. 4.0lbs.

5.0” - 7.0’ 3.25lbs. 5.0lbs.

3.4” - 4.2” 3.0lbs. 5.0lbs.

B 4.4” - 5.6’ 4.0lbs. 5.87lbs.

5.8” - 8.6” 5.25lbs. 7.87lbs.

DIRECT FIRED WARRANTY

The warranty on the ICE Manufacturing Direct Gas Fired Make-up Air Units are one (1) year from installation date or 15 months from date of shipment from our factory.

Our warranty applies for original shipment on all parts and components fabricated by or installed by us with the exception of air filters, flame rods, igniters, and blower belts.

Within the one year warranty, replacement parts will be shipped collect and charged to customer account with credit being issued after receipt of, and examination of the returned parts: freight prepaid to the factory.

This warranty does not include freight, labor, or sales taxes, that may be incurred by the purchasers and is subject to the following conditions:

1) The unit shall be installed by a qualified heating contractor in accordance with the provisions of the service

manual.

2) The unit shall have been installed in accordance with all provincial and local codes.

3) The unit shall have been subject to only normal use in service and shall not have been misused, neglected,

altered or otherwise damaged.

4) The unit shall have been operated within its published capacity and with the prescribed fuel.

5) All automatic controls shall have been operative at all times.

6) The unit has not been allowed to exceed its proper temperature limits due to control malfunction or

inadequate air circulation.

7) There is no evidence of tampering or deliberate destruction.

No representative of ICE or any of its distributors or dealers is authorized to assume for ICE any other obligations or liability in connection with this product, nor alter the terms of this warranty in anyway. This warranty is limited to the express provisions contained herein and does not extend to liability for labor costs incurred in replacing defective parts.

Authorization to return any alleged defective parts must be obtained from the factory before the part is transported and the owner shall prepay the transportation charges for any alleged defective parts. ICE will not accept charges for parts purchased unless the conditions of this warranty have been satisfied.

The express warranties herein contained are in lieu of any other warranties, expressed or implied, including the warranty of merchantability and of fitness for any particular purpose. ICE shall not be liable for damages, including special, incidental, or consequential damages arising out of or in connection with the performance of the Direct Gas Fired Make-up Air Units, or its use by the owner. ICE liability is limited exclusively to repair and or replacement or the defective part. Parts can be obtained from ICE Manufacturing, 51 Aikins Street, Winnipeg, Manitoba, R2W 4E3, on the basis that credit will be issued if defective parts returned qualify for replacement pursuant to the terms and conditions of this warranty.

DISTRIBUTION DUCT

Rev

Revision Description

Date

SERIES

JUNE 24/98

DRW. NO.

JOB NO. REVDATE

INSULATION

SECTION

BURNER BLOWER

CONTROL

DISCHARGE

PANEL

AIR

16" MIN.

SCALEISSUED BY

1:16 FIG. 1

DRAWN BY

TITLE

DIRECT GAS FIRED MAKE-UP AIR HEATERS

INSTALLATIONS AND SERVICE INSTRUCTIONS

CHK. BY

OSD

FIGURE #1

DIRECT GAS FIRED MAKE-UP AIR HEATERS

SECTION

MIX BOX/V-BANK FILTER

SECTION

LOUVERED INLET

FRESH

DAMPER

AIRFLOW

AIR FLOW

RETURN

SLEEPER ROOF CURB

DISTRIBUTION DUCT

SECTION

SERIES

JUNE 25/98

BURNER BLOWER

CONTROL

PANEL

AIRFLOW

SUPPLY

UNIT

BASE FRAME

WOODEN NAILER

CANT STRIP (BY OTHERS)

INSULATION (BY OTHERS)

ROOF CURB DETAIL

DRW. NO.

JOB NO. REVDATE

SCALEISSUED BY

1:18 FIG. 2

SECTION

MIX BOX/V-BANK FILTER

SECTION

LOUVERED INLET

FRESH

DAMPER

AIRFLOW

AIR FLOW

RETURN

ROOF CURB

SLEEPER

FLASHING

(BY OTHERS)

NEOPRENE GASKET

FIGURE #2

OR CAULKING (BY OTHERS)

BOTTOM DISCHARGE

BY OTHERS

DUCT COLLAR

(BY OTHERS)

ROOFING PAPER

SLEEPER ASSEMBLY

TITLE

DRAWN BY

DIRECT GAS FIRED MAKE-UP AIR HEATERS

INSTALLATIONS AND SERVICE INSTRUCTIONS

CHK. BY

OSD

SLEEPER DETAIL

MATERIAL = 16 GA. CB.

CURB

ENDS

DUCT COLLAR

BY OTHERS

SLEEPER

CURB

SIDES

DUCT

ANGLE

SUPPORT

CURB

CENTER

BRACING

ONE EXAMPLE OF CURBING

ANGLE

Rev

Revision Description

Date

SERIES

JUNE 10/98

FRAME

ANCHOR

TO WALL

UNIT

INLET TO

INSULATED

AIR

FRESH

ANGLE

FRAME

DUCT

LINER

FRESH AIR

DUCT

BIRDSCREEN

GENEROUSLY

SIZED

DRW. NO.

JOB NO. REVDATE

SCALEISSUED BY

NTS FIG. 3 & 4

DRAWN BY

TITLE

DIRECT GAS FIRED MAKE-UP AIR HEATERS

INSTALLATIONS AND SERVICE INSTRUCTIONS

CHK. BY

48" MINIMUM

ON ALL TWIN BLOWERS UNIT WITH DUCT A STUB

DISCHARGE DUCT MUST BE INSTALLED WITH A

MINIMUM LENGTH OF 48".

FIGURE #3 FIGURE #4

WALL

ANGLE

FRAME

ANCHOR

TO WALL

INLET LOUVER

FLUSH MOUNTED

ANGLE

FRAME

FRESH AIR DUCT TO UNIT

DUCT

LINER

DUCT

FRESH AIR

SIZED

OSD

MAKE-UP AIR UNIT

INLET

HOOD

AIR

FRESH

BIRDSCREEN

GENEROUSLY

STAINLESS STEEL

SERIES

JUNE 17/98

SCREW

10-24x9/16 LONG

GASKET ENDS

BUTTED

END BAFFLE

AND REPLACE WITH 10-24x3/8 LONG

TO REPLACE RIVETED BAFFLE PLATES

CHISEL OFF RIVETS FROM FLAT SIDE

STAINLESS STEEL SCREWS AND NUTS

RIVETS

THREADED INLET

FLANGE

NO. 1350

5/16-18x2" LONG

BOLT NUT AND

LOCKWASHER

SECTION

12" STRAIGHT

12" SECTION

5/16-18x1 1/4 LONG BOLT

JOINTS

LEAK PROOF

THIN COAT OF FURNITURE

SEAL CASTING JOINTS WITH

NUT AND LOCKWASHER

CEMENT OR GRAPHIC PASTE

* FOR USE WITH HONEYWELL 0624A

IGNITER, CHANGE SPARK GAP TO

1/8" TO 3/16"

7-1/2 LONG

(NOT INCLUDED)

FLAME ROD

1/4" NPT RIGHT HAND

1 1/16

1 7/32

FLAME ROD LOCATION

DRW. NO.

JOB NO. REVDATE

SCALEISSUED BY

NTS FIG. 5

DRAWN BY

TITLE

MIDCO DIRECT FIRED GAS BURNER

PILOT ARRANGEMENTS w/ FLAME ROD

CHK. BY

AND IGNITOR

3/8

SPARK ROD

WITH FLAME ROD AND IGNITOR

EXPOSE INSULATOR

NOT MORE THAN

1/8 INCH

MIDCO DIRECT FIRED GAS BURNER PILOT ARRANGEMENT

ROD

ASSEMBLY

GROUND

ADAPTO PILOT

SLEEVES

ELECTRODE

FLAME ROD

ASSEMBLE BURNER

ASSEMBLY

SPARK ROD

ARE FLUSH

SECTIONS SO THAT

GASKET SURFACES

CLAMP

BAFFLE

PILOT TUBE

1/2"NPT BLIND

BLANK FLANGE

PILOT INLET FITTING

(FOR PROP. CONTAINS

RESTRICTING ORIFICE)

GASKET

BAFFLE

MOUNTING HOLE

SETTING

SPARK GAP *

BURNER PORT

PLUG FIRST

SPARK ROD

PILOT TUBE

OF IST PORT

FOR FLAME ROD,

1/2"x1/4" BUSHING

LEFT-HAND FLAME

OR "UV" SCANNER

LOCATE EDGE OF SPARK ROD 1/16"

FORWARD OF FIRST PILOT AS SHOWN

ROD LOCATION

FOR FLAME ROD,

1/2"x1/4" BUSHING

LEFT-HAND FLAME

OR "UV" SCANNER

# 23739

IGNITOR

14 mm SPARK

ROD LOCATION

(SPECIFY # 238481

FLAME ROD LOCATION

1/4" NPT RIGHT HAND

# 23739

(SPECIFY # 238481

1/8" NPT PILOT

TEST CONN.

1/8" NPT

IGNITOR

14 mm SPARK

1/8" NPT PILOT

GAS CONNECTION

OSD

END FLANGE SETS

# 62-23809 STRAIT-IN & R-H ANGLED FR.

# 62-23849 STRAIT-IN, R-H AND L-H FR.

GAS CONNECTION

END PLATE SETS

# 62-23808 STRAIT-IN & R-H ANGLED FR.

# 62-23848 STRAIT-IN, R-H AND L-H FR.

COMBUSTION

BAFFLE

BURNER

SECTION

CAST IRON

GAS

BUILT-IN PILOTS

PORTS

AS A PILOT.

WITH PILOT GAS CONNECTION LEADING TO A CHANNEL

OF THE MAIN BURNER. EITHER MAY THERFORE BE USED

BOTH THE END PLATE ILLUSTRATED ABOVE AND THE 1-1/4"

END INLET FLANGE IN THE SKETCHES BELOW ARE EQUIPPED

END PLATE

# 62-22739

SECTION

Rev

Revision Description

Date

SERIES

MAY 8/2001

BURNER BLOWER

INSULATION

CONTROL

AIR

DISCHARGE

PANEL

FIGURE #6

DISTRIBUTION DUCT

DRW. NO.

JOB NO. REVDATE

SCALEISSUED BY

NTS FIG. 6

DRAWN BY

TITLE

DIRECT GAS FIRED MAKE-UP AIR HEATERS

SUSPENSION HOLES DETAIL FOR INDOOR UNIT

CHK. BY

OSD

SECTION

MIX BOX/V-BANK FILTER

FRESH AIR

FLOW

INSULATION

DAMPER

RETURN AIR

FLOW

DIRECT GAS FIRED MAKE-UP AIR HEATERS

AND HANDLED WITH THESE HOLES

WHEN MOVING UNIT INTO POSITION

TO BE SUSPENDED FROM CEILING.

UNIT MUST BE LIFTED

5/8"Ø

FOR HOLE SIZE)

(FOR LARGE UNITS

CONSULT FACTORY

BE SUSPENDED FROM THE CEILING.

THE BASERAIL SO THAT THE UNIT MAY

THESE HOLES ARE PROVIDED TO ALLOW

SUSPENSION RODS TO BE INSERTED THRU

DISTRIBUTION DUCT

LIFTING LUG DETAIL

i. Tech 3 OSDs User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

GENERAL INFORMATION

INSPECTION OF EQUIPMENT

INSTALLATION

START-UP PROCEDURE

TROUBLE SHOOTING GUIDE

OPERATING PRINCIPLES OF THE RAW GAS BURNER

TYPICAL SEQUENCE OF OPERATION

MAINTENANCE

TENSIONING V-BELT DRIVES

DIRECT FIRED WARRANTY

1:16 FIG. 1

1:18 FIG. 2

NTS FIG. 3 & 4

NTS FIG. 5

NTS FIG. 6