REPLACEMENT PARTS LIST
(SUPERSEDES EC86 AND EC132)
ECONOMITE
MODELS:
F400-13
F400-23
F400-33
For manufacturing dates and manual availability,
refer to historical data below and on page 2.
This burner has been manufactured since 1961 and has been relatively unchanged except for various pilot styles
described on page 4. Pilot styles can be determined by the double digit suffix following "Model F400" on the rating plate.
¥ Serial number discontinued April 1969 with 94,000
¥ Date coding started April 1969 with 1769 (17th week, 1969)
¥ Pressure tap moved from "B" cock assembly to pilot solenoid February 26, 1986 (date code 986).
¥ Main Burner Casting with welded side baffles superseded by Main Burner Casting with cast-on side baffles February,
1991 (Date Code 0791).
¥ Maxitrol phased out their RV10 and RV60 Regulators February and March 1992 and replaced them with Models
RV12 and RV61. Refer to notes 4 and 5, page 2.
¥ Honeywell R4795A Flames Safeguards superseded by Honeywell RM7895 Flame Safeguards
November, 1993.
¥ Construction required dual Main Valves (UL 795 requirement), April 1, 1994 (Date Code 1394).
Manuals
F400-13 No inclusive bulletin is available for this limited edition burner. Refer to EC49 F400/F800-33 Installation
and Service Manual (any edition 767 through 1179) for installation and general data.
F400-23 NO BULLETINS available for this limited edition burner.
F400-33 Installation and Service Manual EC49 (8448-17) for 400-33, F400-33, 800-33 and F800-33. Date coded
767 through 1179.
Installation and Service Manual EC110 (8449-84). First issue date code 381.
IMPORTANT: Availability of parts as well as specifications are subject to change without notice.
Please consult factory for item availability.
MIDCO International Inc.
4140 WEST VICTORIA STREET ¥ CHICAGO, ILLINOIS 60646 ¥ (773) 604-8700 FAX: (773) 604-4070 ¥ http://www.midco-intl.com
PRINTED IN U.S.A.
498
8472-02
LAYOUT MAY NOT BE AS SHOWN
¥ Refer to listing for proper application
AVOID ERROR IN PARTS
SELECTION. When ordering
use complete MIDCO Part
Number and Description.
Furnish burner model number,
bill of material number and date
code (if available) from rating
plate.
-2-
NOTES
1. Some applications, usually O.E.M. require the use of more than one extension. Determine the exact number in your ECONOMITE before ordering.
2. 5" and 15" Blower Housing and Blast Tube Assemblies are NOT available. A 5" assembly can be fabricated by hacksawing 4" off of a 9" assembly.
A 15" assembly can be made by assembling a 9" assembly with 2020500 (8" long Accessory Blast Tube Extension).
3. Maxitrol and General Controls Pilot Regulators have been used interchangeably. For exact replacement, determine the model used in your ECONOMITE
before ordering. If inlet pressure exceeds 1/2 PSI or if regulating PROPANE, select 8400-00 (Maxitrol RV12LT) as the RV12LT regulates to 1 PSI and
responds better to PROPANE regulation.
4. Burners have been assembled with valves and regulators built by various manufacturers (i.e. General Controls, Maxitrol, etc.). MIDCO will supply whatever
brand is currently in stock, depending on price and availability. Valve or regulator body length may vary and some replacement problems may occur. 3/4"
NPT and 1" NPT Main Regulators have been used interchangeably, as have 3/4" NPT and 1" NPT Main Automatic Valves. Determine the size used in your
ECONOMITE when ordering. BE CERTAIN OF VALVE SIZE. Many early burners were sized for mixed or manufactured gases, which require larger
piping. Effective June 1978, gas pipe trains were reduced one pipe size, except for one special burner.
Note: MIDCO stocks only complete valves. If magnetic operators or power heads are desired, or if exact replacement of any part is desired, they
should be obtained from local distributors.
5. When replacing Fluid Power Valves, obtain pipe size, exact valve number and brand from valve rating plate, as well as the bill of material number from the
ECONOMITE rating plate. Contact MIDCO for price and availability, if not listed. Construction required dual main automatic valves April 1, 1994 (Date Code
1394). Determine the valve size(s) before ordering.
6. Contact MIDCO for availability of early EC manuals.
7. WARNING: Explosion hazard. Can cause serious injury or death. This device can malfunction if it gets wet. Never try to use a device that has been wetÑ
replace it.
8. DECODING CENTURY MOTOR NUMBERS. Single digit prefix denotes manufacturer's location. Double digit suffix denotes manufacturer's mechanical
code.
9. Honeywell R4795A Flame Safeguards were phased out of production November, 1993. Replaced by Honeywell RM7895 Flame Safeguards. Determine
which version is required before ordering.
10. Honeywell Spark Generator was introduced in July, 1994. As standard construction.
-3-
PART NO. DESCRIPTION PART NO. DESCRIPTION
3981-00
4904-45
4905-15
4917-00
4918-11
4919-60
4919-90
4921-50
8
4922-90
4924-10
4944-02
4944-03
4944-10
1
4948-50
4959-05
5201-00
5201-10
5202-08
5211-51
5225-26
2
5225-28
5234-40
5234-50
5249-01
5249-32
5250-00
5253-01
5253-10
5269-05
5272-00
5939-01
5939-02
8400-00
3
8400-05
3
4" Diameter Stainless Sleeve
QuadrantÑAir Shutter Adjustment
Air ShutterÑInternal
Main Orifice Holder
Orifice Elbow (1" NPT)
Blower Wheel with Centrifugal Actuator and Disc
Centrifugal Actuator Disc
1/6 HP Motor 120/230/50/60 (Service Bulletin
8470-39 is included.)
Primary Air Shutter Kit
Inlet Side Plate
Main Spud 25/64" Drill (.390) minimum capacityÑ
NATURALÑdrill 7/16" (.437) for 400/540 MBH
range and omit for 540/700 range
Main Spud #21 Drill (.159) minimum capacityÑ
PROPANEÑdrill for desired capacity per manual
Main Spud Extension
Motor Spacer (4 required)
External Pilot Air Tube Kit
1/2" sq. Pass Thru for 1/4" Tube Fitting (gas line)
1/2" sq. Pass Thru for 5/16" Tube Fitting (air line)
Pilot Spud #55 (.052) Drill [was #54 (.055)]Ñ
NATURAL and PROPANE
Motor, Wheel and Side Plate Assembly 120/1/60
Blower Housing and Burner Tube AssemblyÑ9"
Blower Housing and Burner Tube AssemblyÑ63/8"
(Mammoth Industries)
Flamerod Gland Nut
Flamerod Assembly
Pilot Air Baffle
Spark Rod Assembly
Pilot Tip with Cone less Insulators, Rods, Temflex
and Baffle
Pilot Assembly with Insulators, Rods, Temflex
and Baffle
PVC TubingÑ7/16" I.D. x 2" long
Blower Interlock Switch (MICRO Switch) with
Bracket (replaces early ACRO Switch)Ñif only
MICRO Switch is desired, order 8423-16
Blower Inlet Grille
Flamerod WireÑ5" through 9" Burner Tube
Flamerod WireÑ15" Burner Tube
1/8" NPT Pilot RegulatorÑ1 PSI maximum inlet
(Maxitrol RV10, RV12, RV12LT)
1/8" NPT Pilot RegulatorÑ1/2 PSI maximum inlet
(General Controls V300)
8401-00
8402-00
8402-06
5,*
8416-01
4
8416-02
4
8416-33
4
8418-01
4
8418-03
4
8418-31
*,5
8418-32
*,5
8423-16
8429-16
7,9
8429-19
7,9
8429-22
7,9
8429-25
7,9
8429-27
7,9
8432-09
8433-06
8433-10
8447-11
10
8447-22
10
8448-17
*,6
8449-84
*,6
8450-21
8451-06
8484-72
8484-75
8484-78
8502-05
8502-06
2020100
*
2020400
*
2020500
*
2020300
*
1/8" NPT Pilot "B" Cock
1/8" NPT Pilot Solenoid 120/1/60
11/4Solenoid Valve 120/1/60
3
/4" NPT Main Gas Pressure RegulatorÑ
NATURAL (Maxitrol RV53)
11/4" NPT Main Gas Pressure RegulatorÑ
NATURAL (Maxitrol RV60, RV61)
1" NPT Main Gas Pressure RegulatorÑ NATURAL
(Maxitrol RV60, RV61)
3
/4" NPT Main Automatic Valve 120/1/60
1" NPT Main Automatic Valve 120/1/60
Main On-Off Motorized Valve Actuator without
Proof of Closure Switch (Honeywell V4055A)
1" Main Motorized Valve Body without Proof of
Closure Switch (Honeywell V5055A)
Blower Interlock Switch (MICRO BZ-2RQ174-A2)
Q7800B Subbase
RM7895A Controller
30-Second Purge Timing Card (Honeywell
ST7800A1039)
90-Second Purge Timing Card (Honeywell
ST7800A1062)
Rectification Amplifier (Honeywell R7847A1033)
"O" Ring Orifice Elbow Seal
Pilot Spud (.021)ÑPROPANE (3N4-021, Y90AA-
3221)
Pilot Spud (.032)ÑNATURAL (2-15M1-032,
Y90AA-5232)
Ignition Transformer 120/1/60 primary, 6000 volts
secondary (Webster 612-6A020, 612-6A044;
France 3RABVR-19; Jefferson #638-181)
Honeywell Spark Generator (MH Q652B)
EC49 Installation and Service Manual
EC110 Installation and Service Manual
Orifice Holder Sealing Gasket
Spark Rod Insulator Sleeve
Heyco Strain Relief (SR-4K-1)ÑFlamerod Wire
Heyco Strain Relief (SR-11-2)ÑSpark Rod Wire
Heyco Snap Bushing (B-875-750)ÑControl Box
Spark CableÑ15" Burner Tube
Spark CableÑ5" through 9" Burner Tube
4" Mounting Flange
4" long Accessory Blast Tube Extension (Service
Bulletin 8448-94 is included)
8" long Accessory Blast Tube Extension (Service
Bulletin 8448-94 is included)
Kit to convert NATURAL burner to PROPANE;
includes minimum spud to be drilled per manual,
Main Regulator Spring, Instructions, etc.
* NOT SHOWN
PILOTS
The current MIDCO -33 Spark Ignited Pilot has evolved through a number of designs since MIDCO built its first F400
Series burner with spark ignition and flamerod electronic safety. Listed below are brief descriptions of each design,
approximate production dates and parts availability. Many Burners have been converted to the current production -33
Pilot.
IMPORTANT: Frequently, the serviceman fails to adequately remark the rating plate with the new pilot designation
when a burner is converted. For example, when a Model F400-13 burner is converted to a -33 pilot,
the rating plate should be modified to read F400-33. It is critical that you confirm that the rating plate
reflects the actual pilot designation before ordering parts.
Production dates overlap considerably, as some O.E.M. accounts chose not to change pilot models until their next U.L.
recertification review.
First Production: October 1962
Discontinued: Date unknown
Used primarily on burners supplied to
Mammoth Industries
Available Parts:
8433-10 Pilot Spud .032 NATURAL
First Production: April 1962
Discontinued: January 1970
Available Parts:
8433-10 Pilot Spud .032 NATURAL
8433-06 Pilot Spud .021 PROPANE
First Production: March 1965
Discontinued: October 1966
NO PARTS AVAILABLE FOR THIS PILOT
First Production: October 1966
ALL PARTS ARE AVAILABLE FOR
THIS PILOTÑREFER TO LISTING
-4-
TYPE M3 PILOT
Identifiable Feature:
2 Flat baffles
TYPE -13 PILOT
Identifiable Feature:
Formed Baffle
TYPE -33 PILOT
Identifiable Feature:
Cast Iron Body
TYPE -23 PILOT
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