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Midco Unipower V1, Installation And Service Instructions Manual, Page: 35 / 40

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Midco Unipower V1 Installation And Service Instructions Manual Download Page 35

35

Midco International Inc.

8471 95

Part 2 Service  - Burner Parts Locations - 120V Burners

2

3

4

6

7

8

9B

5

1

10A

SECONDARY

PRIMAR

Y

Y

ELL

OW

BL
UE

WHITE

RED

ORANGE

BLA

CK

240V

208V

120V

CO
M

24V

24V

10B

9A

Item #  Part #   

Descriptions

Figure 15  - 

 Siemens Control Box - 120V Burner

1 

8429-78  

SCEBM-2 Fan Control

2 

8447-28  

120/208/24vac – 24V 40VA Transformer

3 

8402-50  

Pilot Solenoid Valve

4 8409-25 

  Terminal 

Block

5 8406-98/99 

Relay 

“B”

6 8406-95/96 

Relay 

“A”

7 

8425-56  

Air Pressure Switch

8 8423-05 

  On/O

ff

  Switch

9A 8447-22 

  Ignition 

Transformer

9B 8447-39 

  Ignition 

Transformer

10A 8429-69  

Ignition Control

10B  8429-93  

Ignition Control (UV)

XVIII    Burner Part 

Locations 

for 120V Burners

Continued

Summary of Contents for Unipower V1

Page 1: ...ctory for item availability Quality Designed for Proven Performance WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage pers...

Page 2: ...5 1 19 1 26 1 Inlet Gas 4 NG pressure for maximum firing rate W C 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 Manifold gas NG pressure for maximum firing rate W C 5 0 3 4 3 9 3 9 4 3 4...

Page 3: ...fasten the burner to the equipment either create four tapped holes on the front plate and use bolts to fasten the burner or install four threaded studs and fasten the burner with a washer and nut The...

Page 4: ...main gas valve train to the union on the burner Figure 3 1 2 Connect the gas supply line to the shut o valve next to the main regulator Figure 3 2 3 Connect air pressure line from the compression fitt...

Page 5: ...O Valve be installed outside Run full size pipe or tubing from regulator vent openings to outside of building Provide no traps in the vent lines and terminate away from all doors and windows also make...

Page 6: ...to Figures 4A and 4B for Siemens control 120V On O switch 8 Neutral and 1 Ground refer to Figures 4C and 4D 24V Burner Models L1 Black L2 White and G Green refer to Figures 4E Note For 240 V versions...

Page 7: ...M 4 BLOWER 10 F G BL BL W BL BR BR W BR W BR BK G O W BL W 14 15 BLOWER 16 Y R BL BL W BL G G 13 SCEBM 2 FAN W 15 6 B Y A 14 13 SCEBM 2 2 10V COM BL Y 24V RED ORN 120V SCEBM 2 24VAC 8 7 BK 6 8 4 9 BK...

Page 8: ...2 2 BL O O W W 14 13 9 5 4 5 6 7 8 9 10 11 12 TERMINAL STRIP JUMPERS LEGEND F 5 SOLID WIRING AND DASHED WIRING AND ENCIRCLED FLAME SOLID ROUND OPEN ROUND COMPONENT 12 14 13 9 5 8 4 1 RELAY SOCKET COMP...

Page 9: ...03 1 2 3 4 2 X2 01 3 1 4 3 2 1 X2 02 X6 03 1 3 2 X3 04 1 3 2 4 5 X2 03 2 3 1 X10 06 1 2 3 X10 05 2 1 4 5 X4 02 2 3 1 4 3 2 1 X7 04 X7 01 1 3 2 PME71 111A1 DISPLAY OFF Standby waiting for call for heat...

Page 10: ...2 3 X10 05 2 1 4 5 X4 02 2 3 1 4 3 2 1 X7 04 X7 01 1 3 2 PME71 111A1 DISPLAY OFF Standby waiting for call for heat P24 Fan motor on Actuator opens in high fire P30 Prepurging P36 Actuator closes to ig...

Page 11: ...OWER BK SCEBM 1 P3 P1 W P9 SCEBM 1 P11 SCEBM 1 BLOWER BLOWER P13 SCEBM 1 BLOWER Y R BL Y R BL 12 P2 SCEBM 1 TEMPERATURE CONTROL P4 SCEBM 1 O W O 2 1 9 7 8 10 SPARK SENSE W BK SE SP BR BR BR BL BL BL B...

Page 12: ...the burner run and is not reestablished within 15 seconds after the prepurge the ignition system will shut o the Automatic Safety Shut o Valves and LOCK OUT For the 120V models RESET the flame safegu...

Page 13: ...3 Turn the burner up to its actual firing rate applying an input signal of 10V DC for maximum firing rate 4 Confirm that the inlet pressure remains between the maximum and minimum values specified on...

Page 14: ...o regulator See Figure 9 item 3 page 20 for location 2 Use flexible tubing to hook up a manometer to the barb fitting 3 Turn the burner on and adjust the temperature controller to its maximum setting...

Page 15: ...to high fire by applying a 10V DC input signal Verify that the manifold pressure is the same as marked on the Burner Rating Label s for the actual firing rate ________________________________________...

Page 16: ...5 Fill out the installation adjustment data tag and a x to the burner or gas utilization equipment NOTE For subsequent normal starting and shut o procedure refer to CONSUMER INSTRUCTIONS located in Se...

Page 17: ...put gas pressure The motor used in this burner is variable speed By using this air pressure relation in the blower output gas pressure can be varied relative to the air pressure through a ratio regula...

Page 18: ...l for heat Burner is Energized Pre purging sequence initialized Relay A is energized SCEBM 2 Control will read PRGE Blower accelerates to high speed Low pressure air switch is closed Pre purging Blowe...

Page 19: ...on Flame safeguard initializes pilot flame for 10 seconds trial for ignition Pilot valve opened and spark initialized SCEBM 2 Control will read PIL Blower decelerates to lowest speed Did the pilot fla...

Page 20: ...alized and begins 30 second pre purge Pilot initialization Honeywell S8760J initializes pilot flame for 15 second trial for ignition Pilot valve opened and spark initialized SCEBM 1 Control will shine...

Page 21: ...termittent O O PRGE Open 100 Pilot On O PIL Closed Min On On RUN Open Modulate O On ERR Open Min Interrupted O O PRGE Open 100 Pilot On O PIL Open Min On On IGN Open Min O On RUN Open Modulate PRGE Pu...

Page 22: ...n with the up and down arrows then pressing enter to save the selected setpoint Column 1 shows the menu parameters Arrow Keys Up and Down to navigate or adjust a menu parameter Right to access column...

Page 23: ...when one connects a discharge temperature sensor as well as an external thermostat The SCEBM 2 still modulates the burner based on the discharge temperature and the temperature set point but in this...

Page 24: ...ntrol signal B MOTOR RUNS CONTINUOUSLY PILOT WILL NOT LIGHT 1 Confirm that ALL Main Manual Shut O Valves are Open 2 After pre purge if the pilot flame is not proven within the pilot flame re establish...

Page 25: ...l valve 1 leak Loc 13 Loc 13 Valve proving Fuel valve 2 leak Loc 14 Loc 14 POC error Error valve closure control POC Loc 22 Loc 22 Safety loop open Gas pressure switch max open Safety limit thermostat...

Page 26: ...nc 8471 95 XVI Trouble Shooting for 120V Burners Continued E Siemens Control Sequence of Operation for 120V Burners Chart 9 Siemens Control Sequence of Operation 120V Burners Part 2 Service Trouble Sh...

Page 27: ...meaning of the error and diagnostic codes see Error code list in Chart 8 Chart 10 Siemens Control Display of Flame Current 120V Burners F Siemens Control Display of Flame Current for 120V Burners XVI...

Page 28: ...uring the burner run and the pilot is not re established after the pre purge the Ignition Control Module will lock out RESET the 24 volt ignition Control Module by setting the operating control to OFF...

Page 29: ...to V10 2 2101 01 Burner Housing V2 3 N A Main Gas Manifold Pressure Tap 4 N A Manual Firing Valve 5 N A Air Pressure Tap 6 8416 14 Low Fire By Pass 7 8416 04 Dungs FRG Ratio Regulator Item Part Descri...

Page 30: ...p 6 8416 14 Low Fire By Pass 7 8416 04 Dungs FRG Ratio Regulator 8 8402 42 Main Gas Solenoid Valve 1 9 8402 42 Main Gas Solenoid Valve 2 10 8416 05 Main Gas Regulator 11 8404 67 Main Manual Gas Shut o...

Page 31: ...ld Casting 2 8699 30 Air Pressure Tubing to Dungs FRG 3 8699 30 Air Pressure Pickup Tube 4 8433 24 Spark Rod 5 2112 01 Pilot 6 8433 25 Flame Rod 7 8699 30 Pilot Gas Line 8 8699 30 Air Pressure Tubing...

Page 32: ...using Rear 24V Burners 1 N A Aluminum Manifold Burner Casting 2 8699 30 Air Pressure Tubing to Dungs FRG 3 8699 30 Air Pressure Pickup Tube 4 8433 24 Spark Rod 5 2112 01 Pilot 6 8433 25 Flame Rod 7 86...

Page 33: ...ot 2 8433 25 Flame Rod 3 8433 24 Spark Rod 4 N A Burner Gas Manifold 5 N A Gas Orifices 6 2122 10 High Temperature Flange Gasket 7 2113 50 Side Plate 8 N A Main Gas Manifold Pressure Tap 9 2110 00 Ba...

Page 34: ...65 9 33 15 35 1 2112 01 Pilot 2 8433 25 Flame Rod 3 8433 24 Spark Rod 4 N A Main Gas Manifold Pressure Tap 5 2113 50 Side Plate 6 2110 00 Ba e 7 2122 10 High Temperature Flange Gasket Item Part Descr...

Page 35: ...ens Control Box 120V Burner 1 8429 78 SCEBM 2 Fan Control 2 8447 28 120 208 24vac 24V 40VA Transformer 3 8402 50 Pilot Solenoid Valve 4 8409 25 Terminal Block 5 8406 98 99 Relay B 6 8406 95 96 Relay A...

Page 36: ...06 Control Box Shelf 4 8429 57 Ignition Control 5 8429 02 SCEBM 1 6 8447 34 100VA Main 24VAC Transformer 7 8406 58 24VAC Relay 8 8408 78 120VAC Terminal Strip 9 8406 83 Nine Second Relay Timer 10 840...

Page 37: ...shed within 10 seconds after the pre purge the controller will shut o the automatic safety shut o valves and lockout 6 Reset the flame safeguard 7 Repeat step 4 for restart To shut o 1 Close manual ga...

Page 38: ...ag b Protected from shipping damage c Received transportation pre paid at Midco International Inc Return Goods Dept 4140 West Victoria Street Chicago Illinois 60646 6727 d Found by Midco s inspection...

Page 39: ...returned scrapped repaired or replaced as instructed by the customer Products returned to the customer will be sent shipping charges collect Call factory for information 866 705 0514 Fill out form an...

Page 40: ...95 ISO 9001 C O MPAN Y R E G ISTER E D Midco International Inc 4140 West Victoria Street Chicago Illinois 60646 toll free 866 705 0514 tel 773 604 8700 fax 866 580 8700 web www midcointernational com...

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