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Warm Air Replacement EBM Venter Motors

Technical Bulletin Warm Air

Ref GB/TB/022/0207 Warm Air EBM Flue Venter Motors

Note: Bulletin to be used in conjunction with the relevant Warm Air Operating and Maintenance Manuals

Replacement Venter motors for UDSA*; UDSAV*; UDSB-D*, ST series2 and UPA heaters have changed manufacturer.

The EMB motor has undergone life endurance test and proved that the same performances as existing motors and is completely compatible.

Motor wiring has altered from from three wires to four.

This technical bulletin describes in detail the procedure required to complete the replacement of the Venter and wiring changes.

The information contained in this technical bulletin is designed to aid a qualified or competent service technician.  

The following tools and equipment will be required to complete this task:
1. New Venter motor Ambirad 2. Flat head screwdriver 3. Electrical screwdriver 4. 10mm Open Ended Spanner 5. 3mm allen key 6. Crimping tool & Butt Crimps 7. Multi-meter.


ISOLATE ALL ELECTRICAL SUPPLY TO THE HEATER & CONTROLLER BEFORE PROCEDING.

1. Open heater control section side panel by turning quarter turn screw anticlockwise. Allow door to hang.
2. Disconnect the three venter motor wires at the control relay and ground screw (located on the control panel).
3. Using a 20mm open ended spanner, loosen the three retaining screws holding the venter assembly plate to the heater wall.
4. Rotate the venter assembly anticlockwise and withdraw.
5. Holding the motor and using a 3mm allen key, carefully unscrew the allen screw from the impellor boss.
6. Again holding the motor, remove the screws that attach the motor plate to the venter housing.
7. Remove the motor and wheel assembly from the heater.
8. Locate the relevant replacement venter motor as fig 3, 4 and 5.
9. Reattach the motor plate to the venter housing using the screws from step 5.
10. Using the 3mm allen key, reattach the impellor to the motor shaft, making sure the impellor is in the same position as the original and that the screw is tight.
11. Align the new assembly to it’s position at the heater wall and locate on the securing pins.
12. Rotate the venter assembly clockwise to its stop.
13. Using the 20mm open ended spanner, tighten the three retaining screws.
14. Note heater type and reconnect the motor wires using the following steps.


PROCEDURE FOR THE REWIRING OF THE UDSA/UDSB-D 025 - 030 & UPA 030 VENTERS

15. Using a crimper, butt splice the BLACK wire end to insulate.
16. Using an electrical screwdriver, connect the BLUE wire to heater terminal 11.
17. Using an electrical screwdriver, connect the BROWN wire to heater terminal 12.
18. Using an electrical screwdriver, connect the GREEN / YELLOW wire to earth terminal.


19. Restore power to the heater and turn on the gas.
20. Light, following the instructions on the lighting instruction plate.
21. Check for proper operation.
22. Replace the access door.


PROCEDURE FOR THE REWIRING OF THE UDSA 032 VENTER ONLY.

15.Using a crimper, butt splice the BLUE wire end to insulate.
16.Using an electrical screwdriver, connect the BLACK wire to heater terminal 11
17.Using an electrical screwdriver, connect the BROWN wire to heater terminal 12.
18.Using an electrical screwdriver, connect the GREEN / YELLOW wire to earth terminal.


19. Restore power to the heater and turn on the gas.
20. Light, following the instructions on the lighting instruction plate.
21. Check for proper operation.
22. Replace the access door.


PROCEDURE FOR THE REWIRING OF THE UDSA/UDSB-D35 - 100 & UPA40 - 90 VENTERS



15.Using a crimper, butt splice the BLUE wire end to insulate.
16.Using an electrical screwdriver, connect the BLACK wire to heater terminal 11.
17.Using an electrical screwdriver, connect the BROWN wire to heater terminal 12.
18.Using an electrical screwdriver, connect the GREEN / YELLOW wire to earth terminal.


19. Restore power to the heater and turn on the gas.
20. Light, following the instructions on the lighting instruction plate.
21. Check for proper operation.
22. Replace the access door.


PROCEDURE FOR THE REWIRING OF THE SCA75 - 100 & ST-2100 - 400 VENTERS.

15.Using a crimper, butt splice the BLUE wire end to insulate.
16.Using an electrical screwdriver, connect the BLACK wire to heater terminal 11.
17.Using an electrical screwdriver, connect the BROWN wire to heater terminal 2.
18.Using an electrical screwdriver, connect the GREEN / YELLOW wire to earth terminal.


19. Restore power to the heater and turn on the gas.
20. Light, following the instructions on the lighting instruction plate.
21. Check for proper operation.
22. Replace the access door.

 

Click on link below to follow the step by step instructions.

document added 26/02/07

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Article Attachments
706022 TB022 WarmAir Replacement EBM Venter Ben EN 0207 A3F GB.TB.022.0207.pdf

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Last Modified on 12/07/2016.
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