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In  the  United  States

,installation must conform with local

codes or, in the absence of local codes, with 

Installation

of Domestic Gas Conversion Burners

ANSI Z21.8a

-

latest edition and 

National Fuel Gas Code

ANSI

Z223.1

-latest edition(s) available from American

National Standard Institute. Further reference should be
made to the recommendation of your fuel supplier. 

Note

: Any additions, changes or conversions required in

order for the gas utilization equipment to satisfactorily
meet the application needs must be made by a MIDCO
distributor (or other qualified agency) using factory   
specified and approved parts. 

In Canada

, installation must conform with local codes or,in

the absence of local codes, with 

Installation Codes

for Gas Burning Appliances and Equipment, CGA
Standard CAN/CGA 1-B149.1 or 2

.  When the

conversion burner is used on Forced Air Central 
Furnace, the two yellow and black warning labels in the
literature envelope shall be attached in accordance with

Installation Code, CGA Standard CAN/CGA 1-B149,
Clause 5.4.4.4.

Further reference should be made to the

recommendation of your fuel supplier.

INSTALLER

Inform and demonstrate to the user the

correct operation and maintenance of this gas utiliza-
tion equipment.  Inform  the userof the hazards of  stor-
ing flammable liquids and vapors in the vicinity of this
gas utilization equipment and remove such hazards.
Affix this manual adjacent to the conversion burner.  
CODE COMPLIANCE IS THE SOLE RESPONSIBILITY
OF THE INSTALLER.

WARNING: If the information in

these instructions is not fol-

lowed exactly, a fire or explosion
may result, causing property dam-
age, personal injury or death.

Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appli-
ance.

Installation and service must be per-
formed by a qualified installer, service
agency or the gas supplier.

WHAT TO DO IF YOU SMELL GAS

Do not try to light any appliance.

Do not touch any electrical
switch; do not use any phone in
your building.

Immediately call your gas
supplier from a neighbor's
phone. Follow the gas suppliers'
instructions.

If you cannot reach your gas
supplier, call the fire department.

USER: Retain this manual for future reference. If other than routine service or maintenance as
described in this manual is required, contact a qualified service agency. DO NOT ATTEMPT REPAIRS.
An inadvertent service error could result in a dangerous condition.

SAFETY INFORMATION TERMS

: The following terms are used to identify hazards, safety precautions or special nota-

tions and have standard meanings throughout this manual. When you see the safety alert symbol and one of the safety
information terms as shown below, be aware of the hazard potential.

DANGER

: Identifies the most serious hazards which 

will

result in severe personal injury or death.

WARNING

: Signifies a hazard that 

could

result in personal injury or death.

CAUTION

: Identifies unsafe practices which would result in minor personal injury or product and property damage.

Installation and Service Instructions 

Midco International Inc.

4140 West Victoria Street   Chicago, Illinois 60646
tel 773.604.8700    fax 773.604.4070    
web www.midco-intl.com

e-mail  sales@midco-intl.com

1207

8470 72 

Printed in USA

Economite DS45B

Gas Conversion Burner

Q u a l i t y   D e s i g n e d   f o r   P ro v e n   P e r f o r m a n c e

The Economite Model DS45B direct spark ignition conversion burner is adaptable to most gas utilization equipment, including
gravity and forced circulation furnaces and boilers, and is particularly recommended for horizontal and downdraft gas utilization
equipment since it needs no draft to maintain a pilot.  Power burner design makes it perfectly suited for oil burner replacement.

Summary of Contents for Economite DS45B

Page 1: ...any other appli ance Installation and service must be per formed by a qualified installer service agency or the gas supplier WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas suppliers instructions If you cannot reach your gas supplier call ...

Page 2: ...ular air ducts shall not be less than 3 inches In Canada for detailed ventilation requirements refer to standard CAN 1 B149 1 or 2 and or local codes ______________________________________________________ Clean the gas utilization equipment combustion chamber heat exchanger interior and flue connections Remove all adhering tars scale dirt and soot Inspect for actual leaks and or potential leaks Ce...

Page 3: ... the burner tube is too short to reach the combustion chamber such as old fashioned gravity warm air furnace installations WARNING Burner cabinet must be mounted in orientation shown in Figures 1 and 2 Any other mountings may cause a dangerous condition and will void burner warranty and agency approvals Non standard arrangements may be available for some models consult factory for details if requi...

Page 4: ...y In no case shall the relief opening of the draft hood or barometric draft regulator be located at a point lower than the top of the highest flue passage in the equipment Gas utilization equipment requiring controlled draft may be equipped with a listed double acting barometric draft regulator installed and adjusted in accordance with the manufacturer s instructions if approved by local codes A d...

Page 5: ...igure 5 The burner gas supply piping should branch off from the main line as close to the gas meter as possible Do not connect to the bottom of a horizontal section Use new black pipe and malleable fittings free of cutting and threading burrs or defects Provide a sediment trap union and 1 8 pressure tap in piping close to burner as shown in Figure 5 Use pipe joint compound resistant to Liquid Petr...

Page 6: ...apacity spud input The burner is shipped with the primary air controlling shutter set wide open to provide a lean gas air mixture during the initial start up Do not change the combination gas valve pressure regulator setting at this time CAUTION The approximate air and gas settings described above are for initial start up only Final settings must be made in accordance with Section VIII Instruction...

Page 7: ...lization equipment must be off Then Divide by 1 000 for MBH value For PROPANE gas consult your supplier for method of determining firing rate 10 Readjust the primary air shutter to provide a quiet soft blue flame with well defined orange and yellow tips for NATURAL gas or with well defined yellow tips for PROPANE gas 11 Check the operation of the burner start and stop it several times with the the...

Page 8: ...set to its original position following servicing Cleaning of the blower wheel is usually the only service required Need for cleaning is indicated if the air cage assembly shows an accumulation of dust and lint or if the character of the flame indicates a deficiency of air Motor cooling air vents should also be cleaned at this time The blower side plate motor and wheel are removed as an assembly Di...

Page 9: ...ld gas pressure of 3 5 W C for NATURAL If pressure adjustment is required for setting capacity remove regulator cap for access to slotted adjustment screw Turning of adjustment screw counter clockwise reduces pressure clockwise increases pressure Do not adjust past the point where no change in pressure is noted NOTE Pressure setting must be made with burner running and main gas ON CAUTION When adj...

Page 10: ...Do not use this device if it gets wet It can malfunction and cause serious injury or death Replace any device that has been wet ______________________________________________________ Keep the area around the burner clear and free of combustible materials gasoline or other flammable liquids or vapors Do not obstruct burner air openings or ventilation grills for combustion air The motor features per...

Page 11: ...ER LISTED I MOTOR WILL NOT RUN OR MOTOR RUNS IN REPEATED CYCLES A Confirm 120V between strip terminals 1 and 2 and verify the circuit polarity and electrical ground between strip terminal 1 and GND B Check 24V operating control circuit 1 Between left strip terminal T and GND a No voltage transformer defective b Very low voltage circuit overloaded or transformer defective 2 Between right strip term...

Page 12: ...d steady Verify per Section VII that the spud orifice size and manifold pressure are correct b Zero erratic low or high pressure confirm that the inlet pressure to the combination valve is between 5 0 and 14 0 W C for NATURAL 11 0 to 14 0 W C PROPANE during standby and during trial for ignition c If manifold pressure is zero below 1 5 or above 3 5 W C NATURAL 10 0 W C PROPANE or erratic replace co...

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