BBHD12 Heater

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Read all instructions before using the heater

Contents

1) Components ............................................................................................................................. 3

Total Assembly ......................................................................................................................... 3

2) Specifications ........................................................................................................................... 4

a) Power Specifications ............................................................................................................ 4

3) Receiving .................................................................................................................................. 4

4) Safety ....................................................................................................................................... 5

a) Power connections ............................................................................................................... 6

b) Control power ....................................................................................................................... 6

c) Air intakes and exhaust ports ............................................................................................... 6

d) Exhaust temperature ............................................................................................................ 7

e) Connecting and disconnecting ............................................................................................. 7

5) Operation .................................................................................................................................. 8

a) Pre-startup ............................................................................................................................ 8

b) Startup and operation ........................................................................................................... 8

c) Shutdown ............................................................................................................................ 10

6) Bug Killing Conditions ............................................................................................................ 10

7) Troubleshooting ...................................................................................................................... 11

8) Replacing Fuses ..................................................................................................................... 12

9) Replacing Resistors................................................................................................................ 12

10) Preventative Maintenance of the Heater ................................................................................ 13

11) FAQ ........................................................................................................................................ 14

12) Treatment Suggestions .......................................................................................................... 17

13) Service Parts .......................................................................................................................... 18

Figure List:

1) Total Assembly of BBHD12 Heater

2) Power Connections 3) Powering the Controls 4) Thermostat 5) Thermal Switch and Fuses 6) Replacing Fuses

BBHD12 Heater

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IMPORTANT INSTRUCTIONS

1) Components

Total Assembly BBHD12

Lifting Handles

Air Intake

Hot Air Exhaust Figure 1b Figure 1a

120VAC

Receptacles 240VAC

Receptacles Telescoping

Pull Handle

Figure 1c Main Power

Switch

Digital

Thermostat

Resistor

Power Switch Ready

Light

Switch

Panel

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2) Specifications

Blower 120VAC, single phase, 60Hz powered internally

Control power 120VAC, single phase, 60 Hz

Rating Continuous duty

Power factor 1.0

Load elements The current at each step is subject to a manufacturing tolerance of ±5%.

Enclosure

Electro-statically powder coat, Red: PPG PCT69118

Air inlet and outlet are covered by metal screens.

Heat is discharged horizontally.

Environmental 120V, 850CFM fan to bring outside air into the heater.

Unit Weight 26 lbs.

Dimensions BBHD12: 18.7”x19.1”x12.0”

a) Power Specifications

3) Receiving WARNING! ELECTRIC SHOCK HAZARD. Electric shock can lead to severe injury

or death. If the heater has been damaged in transit, do not operate

until a competent technician inspects the unit and determines that it

can be operated safely.

1) Check the equipment for obvious damage.

2) Document and report any exterior damage to the carrier immediately.

Circuit Number 1 2 3 4 Total

Voltage (VAC) 120 120 240 240

Current (Amps) 14 14 18 18 64

Power (kW) 1.68 1.68 4.32 4.32 12

Figure 2 Table 1

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4) Safety This heater is designed for a variety of loads. Because of this, it is possible that voltages

higher that those applied can be present inside the heater and at external connections of

the heater. Work on the heater’s internal systems should only be attempted by highly

trained technicians and only when power has been disconnected and cannot be

reconnected to the unit.

IMPORTANT INSTRUCTIONS

When using electrical appliances, basic precautions should always be followed to reduce

the risk of fire, electrical shock, and injury to persons, including the following:

1) Read all instructions before using this heater.

2) This heater is hot when in use. To avoid burns, do not let bare skin touch hot

surfaces. Use handles when moving this heater. Keep combustible materials, such

as furniture, pillows, bedding, papers, clothes, and curtains at least 6 feet

(1.8 meters) from the exhaust of the heater and keep them away from the sides and

rear.

3) Extreme caution is necessary when any heater is used by or near children or invalids

and whenever the heater is left operating and unattended.

4) Remove all animals and plants from area to be heated

5) Always unplug heater when not in use.

6) Do not operate any heater with a damaged cord or plug or after the heater

malfunctions or has been dropped or damaged in any manner. Discard heater or

return to authorized service facility for examination and/or repair.

7) Do not use outdoors.

8) Do not use in wet or moist locations

9) This heater is not intended for use in wet indoor environments.

10) Do not run cords under carpeting. Do not cover cords with throw rugs, runners, or

similar coverings. Do not route cords under furniture or appliances. Arrange cords

away from traffic areas and where it will not be tripped over.

11) To disconnect heater, turn controls off, then remove plugs from outlets.

12) Do not insert or allow foreign objects to enter any ventilation or exhaust opening as

this may cause an electric shock or fire, or damage the heater.

13) To prevent a possible fire, do not block air intakes or exhaust in any manner. Do not

use on soft surfaces, like a bed, where openings may become blocked.

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14) A heater has hot and arcing or sparking parts inside. Do not use it in areas where

gasoline, paint, or flammable liquids are used or stored.

15) Use this heater only as described in this manual. Any other use not recommended by

the manufacturer may cause fire, electric shock, or injury to persons.

16) Always plug heater directly into a wall outlet/receptacle. Never use with a re-locatable

power tap (outlet/power strip).

17) This heater includes a visual alarm to warn that parts of the heater are getting

excessively hot. If the alarm light goes on, immediately turn the heater off and inspect

for any objects on or adjacent to the heater that may cause high temperatures. DO

NOT OPERATE THE HEATER WITH THE ALARM LIGHT ON.

18) SAVE THESE INSTRUCTIONS

.

a) Power connections

WARNING! ELECTRIC SHOCK HAZARD. All power connections must be

connected or guarded. Failure to do so will expose operators to

possible shock and the possibility of grounding-out or shorting-out of

the test power source.

b) Control power

Use 120V type S or type SJ jacketed cord to a wall connection. Cord and service

rated to 15 AMP minimum.

c) Air intakes and exhaust ports

Caution! All air intakes and exhaust ports must be clear and fully open. This

heater has one air intake designed for proper air flow. Reducing or blocking

air flow will lead to overheating and heater failure.

High volumes of cooling air are needed to prevent load elements from overheating. By

their very nature, resistors under load convert electrical energy to heat. This heat must be

removed from the unit. The blower, intake, and exhaust ports are sized to provide the

proper amount of cooling air. Preventing or limiting air flow will allow the heater to

overheat.

To increase the life of the load elements, allow the fans to run at least three minutes after

the load is removed or until exhaust air is cool.

No ductwork is permitted on intake or exhaust of this heater as this will cause a

backpressure and ruin the resistors.

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Caution! Material can be moved by intake air or exhaust air. Failure to secure

material could cause injury to bystanders or damage to the heater.

Good air flow keeps the heater cool but can very easily move light debris such as paper,

cardboard, and dust with great velocity. Loose materials around the heater, especially

near the intake and exhaust, must be secured to prevent movement. Material on the

exhaust side may be blown into and injure a bystander. Material near the intake may be

taken into the heater damaging internal components.

d) Exhaust temperature

WARNING! FIRE AND BURN HAZARD. Keep flammable material at least 40 feet

away from the heater. A great deal of heat is expelled from the heater.

Temperatures inside the heater are sufficient to ignite flammable

fumes or materials. Failure to maintain proper housekeeping and

properly securing flammable material could lead to fire, burns, and/or

injury.

Even with sufficient air flow, internal component temperature will exceed 400 °F. Exhaust

air temperature rise of 100 °F can be achieved at full power. Flammable materials must

not be kept around the heater. Heat from the heater could ignite this material.

e) Connecting and disconnecting

WARNING! BURN HAZARD. Attempting to connect or disconnect leads while

heater is in operation can lead to severe injury or death. Connecting or

disconnecting plugs and receptacles while current is flowing or

voltage is present may cause arcing. Arcing can generate a great deal

of light, heat and possibility of electrocution.

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5) Operation

a) Pre-startup

1. Check housekeeping in the operational area and correct all unsafe conditions.

Failure to do this may result in debris being blown around and may cause a fire hazard.

2. Position heater so that air will flow freely into the intakes and out of the exhaust port.

3. All air intakes and exhaust ports must be clear of any blockages or debris.

4. For best results it is recommended that all doors, window, vents, and air conditioners in

the heating area be insulated

b) Startup and operation

1. Connect the 120VAC plug to the right most receptacle to power the controls (See Figure

3)

2. Determine where you will get power from.

Each plug utilized will draw the current shown in Table 1. Carefully select power sources

as to not overload and trip breakers or fuses.

3. Connect all other desired 120VAC plugs and desired 240VAC plugs.

The heater will function with only the right receptacle being powered. If all of the

receptacles are not being powered the unit will reach a lower maximum temperature and

the unit will take longer to heat a space to a desired temperature, if that temperature can

be reached. It is recommended that all receptacles are powered, especially for larger

spaces or a higher desired temperature

4. Ensure all cable sizes are sufficient to carry the expected current. Failure to size

conductors properly will lead to conductor overheating, which will damage conductors

and may pose a fire hazard.

5. Put the Main Power switch in the ON position. The fans should now engage, and the

digital thermostat should turn on.

6. To adjust the desired room temperature, put the Heat Applied switch in the ON position to

engage the resistors. Press the SET button on the thermostat, then use the UP/DOWN

arrows to change the value displayed on the digital thermostat to the desired

temperature. For recommended temperatures to kill different bug types see Time in

Minutes to Mortality Chart.

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7. The heater will now generate heat until the temperature at the thermostat reaches the

desired temperature. The heater will automatically turn the heater elements on and off as

required to control to the desired temperature being sensed at the thermocouple(s).

8. Allow the heater to hold the temperature of the room for the recommended time shown in

table Time in Minutes to Mortality Chart.

9. Note that your heater thermostat is programmed with a 2 °F hysteresis value.

SET Button

Temperature

Display

Temperature

Controls

Figure 4. Thermostat

Figure 3. Powering the Controls

120VAC Cord

Powering Controls

Master

Plug

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c) Shutdown

1. Put the Heat Applied switch in the OFF position and lower thermostat value to below

standard room temperature.

2. Allow fans to operate at least three minutes or until exhaust air is cool before shutting

them off.

This cooling period will extend the life of your heater.

3. Put the Main Power switch in the OFF position.

4. Remove all 120VAC plugs and 240VAC plugs from the heater.

5. Put cables back into the storage box. (Not supplied by Mosebach)

6. Move the unit to storage.

6) Bug Killing Conditions The conditions below represent the recommended run time once the entire area has

become fully heated. Enclosed spaces, such as clothes, beds, couches and drawers may

take significantly longer to reach desired temperatures than exposed surfaces in the

space being heated.

The information below has been obtained from various sources and has not been verified

independently. The results when using this information is not guaranteed.

Time in Minutes to Mortality Chart

Temperature

(°F)

Bed Bugs Flour Beetle Adults Drywood Termites

Nymphs

Argentine Ants

Adults

German Cockroach

Adults

115 7 123 265 8 58

120 2 16 33 4 27

126 1 9 10 2.5 16

130 1 4 6 1 7

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7) Troubleshooting

Thermostat/Heater Will

Not Turn On

Make sure the master 120V receptacle is powered.

Ensure Main Power switch is in the ON position.

Blower will not turn on. Check for debris preventing fan from turning.

Check control fuse (FS1). See Figure 5.

Load steps will not turn

on.

Check over temperature sensors (OTS). See Figure 5.

Check control fuse. See Figure 5.

Check resistor continuity. See schematic.

Check resistor step fuses. See Figure 5.

Check the temperature set point (SP).

Over temperature light.

This is an indication that the internal cabinet temperature has exceeded 150°F.

Make sure the cabinet is ventilated.

Check over temperature sensors (OTS). See Figure 5.

Figure 5. Thermal Switch and Fuses

Step Fuses

Control OTS Control Fuse

(FS1)

Resistor OTS (on the underside of the

middle resistor)

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8) Replacing Fuses Using a #2 Phillips head screwdriver, remove the 18 screws from the cover panel.

Carefully remove the panel from the unit. Service on fuses can then be performed.

9) Replacing Resistors Consult Mosebach Manufacturing Co.

#10-24 Truss

Head Bolt

Figure 6. Replacing Fuses

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10) Preventative Maintenance of the Heater 1. Do not use a power washer to clean off the exterior of the unit. It is high voltage

electrical equipment.

Component Action Frequency

Entire Unit Walk around the load bank

and inspect for :

a) Obvious Damage

b) Loose hardware

Check every use

All exterior bolts that hold the

sheet metal.

Tighten the ¼-20 hardware to

5 ft.-lbs.

Check monthly.

Resistance readings Using an ohm meter, check

each step for the correct

resistance. The reactors

should have continuity

between input and output.

These values are part of

Appendix B wiring schematic.

Check every 6 months

Electrical Components/ Wiring Check throughout the unit for

loose wires, or electrical

components that are no longer

secure to their mounting plate.

Check every 6 months

Fan Check the fan for damage that

could cause the airflow to

change such as damaged or

missing bearing, or damaged

blades.

Check Annually

Contactors Ensure contacts are opening

and closing

Check Annually

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11) FAQ

Frequently Asked Questions

About BBD12 Heaters

Why are there two 120V and 240V inputs?

The 120V and 240V inputs can supply only a limited power based on the size of the

circuit. The four inputs split the total amperage draw of 64A into one 14A input (for the

master connection), one 14A input for the second circuit, and two 18A inputs allowing the

first two connections to draw power from a 120V power supply on a 15A circuit without

tripping a breaker or blowing a fuse.

Which of the 120V extension cords must be plugged in for use?

The master / control power 120V extension cord must be plugged in or the unit will not

operate. This input is the one labeled Master.

Do I need all 120V and 240V extension cords plugged in?

No, the units will run with fewer than four cords plugged in but at a reduced heat output.

We recommend using all four plugs as that will allow the unit to produce the most heat

which provides the quickest heating time, the ability to treat a larger space than with

fewer than all four plugs, and to ensure that the desired temperature is reached.

Can I use the 120 volt extension cords and the 240 volt extension cords at the

same time?

The BBHD12 is designed to use both 120 volts and 240 volts at the same time.

What size power cord should I use?

It depends on how long the extension cord is. For 120 volts the wire must be at least #14

wire for up to 50 feet and #12 wire for anything above 50ft. For 240 volt, the minimum

wire size is a #6 for up to 100 feet.

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What size space can be treated with a BBHD12 Heater?

Treatment times will vary depending on the type of construction and the conditions of the

treatment area, the objects in the treatment area, and the voltage supplied to the unit.

Our testing was in a 256 square foot chamber with 8 foot ceilings constructed of

Styrofoam (R-10 insulation).

How long will a treatment take?

Treatment must be long enough to ensure that the bugs and eggs are subjected to lethal

temperatures and times. This means that after the initial rise to desired temperature, that

there will be a period of time where that high temperature is maintained to allow the heat

to penetrate any objects being treated. This would likely be several hours, but will depend

largely on how quickly the objects being treated absorb heat. Spacing out the objects in

the treatment area and circulating the heat will aid in the objects absorbing heat from the

air.

Why is it taking so long to heat the area?

There are many factors that affect heating times. They include size of the area, voltage

levels in the building and construction of the space. Please see Heating Time Section in

the owner's manual. Heating times can be decreased by adding insulation or covering

doors, windows, vents, etc.

Where can I use a BBHD12 Heater?

The unit must have adequate power supply (refer to the spec sheet or quote for voltage,

amperage, and power consumption). Supplying voltages other than those listed may

result in decreased performance. The unit must be powered such that it is grounded and

the power supply must be fused and grounded. The unit is rated for indoor use only.

Should I keep the heater inside the heated area?

The heater will work best if the heater is kept inside the area being heated.

What should the differential be?

We suggest 2 degrees.

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I want to use a generator. What kind of generator do you recommend?

For our recommended generator, please refer to the BBHD12 Accessories quote. If you

have not received an Accessories quote, contact a Mosebach sales representative.

I hear a continuous clicking sound, what’s wrong?

Clicking means that there is not enough air being moved through the heater. Sometimes

the clicking does not start until the area is heated. In both cases the most common

cause is low voltage. Increase the size of the wire being used in the extension cords or

reduce the cord’s length. The BBHD heater is rated for 120V or 240V single phase

electric. Supplying less voltage may result in insufficient airflow causing the clicking

sound.

The fan is running, but there is no heat.

First, check the connection of the thermostat unit and set points.

Second, make sure the air intake is further than three feet from a wall and it is

unobstructed.

Lastly, verify the power supply / voltage to the master / control plug is correct.

Who can I contact with additional questions?

If you have any additional questions or concerns, please contact Mosebach

Manufacturing at support@mosebachresistors.com. Please provide the serial number,

part number, contact information and a detailed description of the question or concern.

BBHD12 Heater

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12) Treatment Suggestions

Adjustments must be made to treatment procedures for the given conditions in a

treatment area. Effective treatment may require larger or multiple heaters depending on

the size and conditions of a given treatment area. Correct power must be supplied to the

unit. Please refer to the quote for rated voltages and amperages.

Treatment Recommendations:

1. Use seals to block any gaps in the doors.

2. Use high temperature insulation to cover vents and air conditioners, isolate spaces, and

cover cement.

3. Insulate windows.

4. Insulate / cover any vents or through-wall AC units.

5. Furniture might have to be rearranged for better heat circulation (including mattress and

box spring).

6. Fans to help circulate the heat are recommended. Fans must be rated to run in high

temperature and should have low amperage draw to prevent tripping a breaker and

losing treatment time.

7. Correct voltages must be applied for the heaters to run properly. The BBHD12 heaters

are rated for 120V and 240V single phase.

8. The starting temperature of the area will affect the time needed to reach temperature. A

very cold area will take longer to reach lethal temperatures than a warm one.

9. Use multiple heaters for larger areas.

10. Any fan or ventilation system that either draws in outside air or vents out the heated air

from the treatment area will result in heat loss.

11. Any door or window that is left open, even slightly, will result in heat loss.

12. Every space is different, and treatment procedures must be adjusted to accommodate

the particulars of the space being treated.

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13) Service Parts

5 ECN 3808 – Updated cable size requirements DMK 12/6/2016

4 ECN 3807 – Updated title page DMK 11/23/2016

3 ECN 3803 – Updated title page DMK 11/18/2016

Rev. Description Rev. By Date

Copyright © 2016 Mosebach Manufacturing Company

MOSEBACH MANUFACTURING COMPANY

1417 McLaughlin Run Road • Pittsburgh, PA 15241-3103 USA

T: 412.220.0237 Customer Care

F: 412-220-0236

www.mosebachresistors.com

OM-BBHD12.doc June 23, 2016

“SAVE THESE INSTRUCTIONS”

Description Part Number

Fan BLWR-0055-0023

Resistor

Elements

RA-0400-0035-1

RA-0400-0035-2

RA-0400-0035-3

Fuses 5A = AGC-5

20A = EC-9500-1578

Temperature

Controller EC-9500-1872

Thermistor EC-9500-1871

Contactors EC-9500-1874