Midco MPG 1.5G Parts List

Replacement Parts

List

MADE in the USA

Unipower
MPG 1.5G and MPG 2.5G

8

7

6

4

3

2

0

MPG Series
Installation and Service Manual - 8471-51

Midco® International Inc.
4140 West Victoria Street
Chicago, Illinois 60646
toll free 866.705.0514
tel [phone]
fax [phone]
web www.midcointernational.com
e-mail [e-mail]

AVOID ERROR IN PARTS SELECTION. When ordering use complete MIDCO Part Number and
Description. Furnish Burner Model Number, Bill of Material Number and Serial Number (if available)
from the speci cation plate found on the product.

IMPORTANT: Availability of parts as well as speci cations are subject to change without notice. Please
consult factory for item availability.

314

8472 95

Quality Designed for Proven Performance

Printed in USA

Exploded View - MPG 1.5G & MPG 2.5G

2*

1*

27

3*

30

29

28

22

23

26

25

24

4

5

6

11*

10

7

9*

8

12

13

8

7

6

4

3

2

1

0

21

16B16A 16D16C

19B19A 19D19C

20

18B18A 18D18C

(On-Off Only)

17B17A 17D17C

14A

14B

15A

15B

16B16A 16D16C

Cartridge Assemblies and Gas Flow Control -See page 4

2

Midco International Inc.

MADE in the USA

8472 95

Parts List - MPG 1.5G & MPG 2.5G

Item Part # Description Qty Item Part # Description Qty

1A 8429-27 R7847A Rect Flame Amplifi er 1

1B 8429-30 R7849A UV Amplifi er 1

2A 8429-25 ST7800A1062 90-Sec Timer 1

2B 8429-22 ST7800A1039 30-Sec Timer 1

3A 8429-56 RM7895E Controller (Flame Rect) 1

3B 8429-19 RM7895A Controller (UV only) 1

4 8429-16 Q7800B Sub Base 1

5 8408-94 10-32 Terminal Nut 1

6 8447-22 Ignitor Spark Generator 1

7 5244-50 MPG Control Box (Approx. 9″x7.5″x3.5″) 1

8 5238-06 MPG 1.5/2.5 Blower Housing 1

9A 3627-50 MPG 1.5 Blower Wheel 7″ X 3.5″ 1

9B 7349-00 MPG 2.5 Blower Wheel 7″ X 4″ 1

10 3197-50 Motor Adaptor Flange 1

11A 8437-16 MPG 1.5 1/2 Hp Motor,

Single Phase, 115V/230V 60Hz 1

11B 8437-23 MPG 2.5 3/4 Hp Motor,

Single Phase, 115V/230V 60Hz 1

12 5238-07 MPG 1.5/2.5 Air Shutter 1

13 5238-36 MPG Housing Gasket 1

14A 5238-08R MPG 1.5 Blast Tube 1

14B 5239-08R MPG 2.5 Blast Tube 1

15A 2020800 6″ Mounting Flange MPG 1.5 1

15B 5239-15 8″ Mounting Flange MPG 2.5 1

16A 8404-67 1″ Ball Valve without Side Tap 1

16B 8404-66 1- 1/4″ Ball Valve without Side Tap 1

16C 8404-65 1- 1/2″ Ball Valve without Side Tap 1

16D 8404-64 2″ Ball Valve without Side Tap 1

17A 8404-38 1″ Quick Activated

Ball Valve (On-Off Only) 1

17B 8404-40 1-1/4″ Quick Activated

Ball Valve (On-Off Only) 1

17C 8404-41 1-1/2″ Quick Activated

Ball Valve (On-Off Only) 1

17D 8404-42 2″ Quick Activated

Ball Valve (On-Off Only) 1

18A 8418-03 1″ Solenoid Gas Valve 120V 1

18B 8402-06 1-1/4″ Solenoid Gas Valve 120V 1

18C 8402-07 1-1/2″ Solenoid Gas Valve 120V 1

18D 8402-18 2″ Solenoid Gas Valve 120V 1

19A 8419-24 1″ 2-Way Comb Dv Valve 120V 1

19B 8419-81 1-1/4″ 2-Way Comb Dv Valve 120V 1

19C 8419-82 1-1/2″ 2-Way Comb Dv Valve 120V 1

19D 8419-83 2″ 2-Way Comb Dv Valve 120V 1

8472 95

MADE in the USA

Midco International Inc.

20 5238-22 MPG 1.5/2.5 Inlet Ring 1

21 5238-72 MPG 1.5/2.5 Air Screen 1

22 5238-73 MPG Blower Gasket 1

23 8437-62 Inlet Ring 1

24 8483-00 1/8″ M X 1/4″ Tube Elbow 1

25 8483-11 1/4″ M X 5/16″ Tube Elbow 1

26 8400-10 1/4″ Pilot Regulator 1

27 8404-28 1/4″ Ball Valve 1

28 8483-30 1/8″ M X 5/16″ Tube Straight Fitting 5

29 8402-00 1/8″ NPT Solenoid Valve, 120V 1

30 8483-01 1/8″ M X 5/16″ Tube Elbow 1

Not Shown

5238-39 Leak Test Cock Kit

5238-77 MPG Pilot Orifi ce Assembly Stamped B

5238-79 MPG Pilot Orifi ce Assembly Stamped A

5239-13 Rope Gasket, 8″ Tube (MPG 2.5)

5240-89 Rope Gasket, 6″ Tube (MPG 1.5)

5243-42 500 Ohm Resistor Kit

8406-68 DPST Relay - 120V (Motor Contactor)

8425-52 Pressure Diff Switch

Special Parts

MPG 1.5G HTD

5238-50 HTD Shutter Weldment

8419-95 Belimo Actuator

5243-49 1-1/2″ Flow Control Valve 10-1

5238-61 MPG 1.5G Cartridge Assembly 10-1 UV

5238-86 C Pilot Orifi ce

MPG 2.5G HTD

5238-50 HTD Shutter Weldment

8419-95 Belimo Actuator

5243-54 2″ Flow Control Valve 10-1

5239-83 MPG 2.5G Cartridge Assembly 10-1 UV

5238-86 C Pilot Orifi ce

230V Parts (Not Shown)

8429-42 EC7895A Controller

8437-25 3/4Hp Motor 230V 50/60Hz

8402-09 1-1/2″ Solenoid Gas Valve 240V

8402-46 1/8″ Pilot Solenoid Valve 220V/240V

8447-24 Ignitor Spark Generator 230V

3

Cartridge Assemblies - MPG 1.5G & MPG 2.5G

Flame Rod (FR) Cartridge

4A

3

4B

5

N

O

I

P

M

A

H

6A

6B

1A

1B

2

1C

1D

7

8A

3

8B

N

O

I

P

M

A

H

9A

9B

10A

10B

2

10C

10D

UV Cartridge

Not Shown

5238-42 Ignition Wire - MPG 1.5/2.5

8457-21 Cable Wrap Black (UV Cartridge Assemblies)

8506-38 Flame Rod Wire MPG 1.5/2.5

(FR Cartridge Assemblies)

1

2

3

Item Part # Description Qty

1A 5238-30 MPG 1.5 FR Cartridge Assembly 1

1B 5239-30 MPG 2.5 FR Cartridge Assembly 1

1C 5238-90 MPG 1.5 FR

Cartridge Assembly (On-Off) 1

1D 5239-90 MPG 2.5 FR

Cartridge Assembly (On-Off) 1

2 7122-90 Peep Sight Assembly 1

3 5238-49 Spark Plug 1

4A 5238-20 Pilot Weldment-Flame Rod (MPG 1.5/2.5)

Two Slots (High Low 3″ Full Mod) 1

4B 5238-62 Pilot Weldment-Flame Rod (MPG 1.5/2.5)

Single Slot (On- Off) 1

5 5236-18 Flame Rod Assembly 1

6A 5238-09 MPG 1.5 FR Cartridge Weldment Swirlier 1

6B 5239-09 MPG 2.5 FR Cartridge Weldment Swirlier 1

7 8428-05 UV Scanner 1

8A 5238-84 Pilot Weldment - UV (MPG 1.5/2.5)

Two Slots 1

8B 5238-51 Pilot Weldment UV(MPG 1.5/2.5)

Three Slots (10 to 1) 1

9A 5238-82 MPG 1.5 UV

Cartridge Weldment Swirlier 1

9B 5239-82 MPG 2.5 UV

Cartridge Welment Swirlier 1

10A 5238-02 MPG 1.5 UV Cartridge Assembly 1

10B 5239-02 MPG 2.5 UV Cartridge Assembly 1

10C 5238-61 MPG 1.5 UV Cartridge Assembly 10 to1 1

10D 5239-83 MPG 2.5 UV Cartridge Assembly 10 to1 1

Cartridge Assemblies

7

1

4

8

5

7

Not Shown

5243-34 Butterball Valve (MPG 1.5)

5243-35 Butterball Valve (MPG 2.5)

8419-09 Belimo Actuator Repair Kit

8447-28 Transformer Full Mod/Hi-Lo (120/208/240-24V 40VA)

Midco® International Inc. - 4140 West Victoria Street - Chicago, Illinois 60646 - toll free: 866 705 0514

4

tel: [phone] - fax: [phone] - web: www.midcointernational.com - e-mail: [e-mail]

6

Gas Flow Control

for Two-Stage and Full Modulating 3-1 Burners

Item Part # Description Qty

1 8450-94 Crank Arm Shrt 2

2 5243-30 MPG Gas Valve Shaft 1

3 5243-32 MPG Gas Valve Indicator 1

4 5243-38 MPG Belimo Assembly 1

5 5243-39 MPG Belimo Anti-Rotation Bracket 1

6 5243-31 MPG Actuator Holder 1

7 8450-18 5/16″ Ball Joint 2

8 7180-25 14″ Long Connecting Rod 1

MADE in the USA

314

8472 95

Printed in USA