A DHC-8 maintenance ferrying crew with a flaps up takeoff configuration failed to consider that the takeoff warning horn would sound and rejected the first attempted takeoff when the horn did sound.

Narrative

My First Officer and I were conducting a ferry flight. The aircraft had both standby pumps inoperative; so the permit instructed us to conduct the flight with the landing gear remaining down and a zero flap takeoff. We took extra time to consider various scenarios and the effects the condition of the aircraft would have on the outcome by reviewing the emergency/abnormal checklist prior to departing. We also made sure that the aircraft was configured in accordance with the ferry permit. We did not consider the fact the horn would sound in this configuration. When the horn went off on the takeoff roll; I aborted and cleared the runway now knowing that the flaps were the cause of the horn. I contacted maintenance and he instructed me to pull the warning circuit breaker and proceed. I stated that I would now not have a warning system to ensure that everything else would be set correctly and he said to just make sure that everything is correct. I did just that and proceeded with the flight. Provisions for this ferry flight had to be worked out in order to allow a ferry flight to take place. Although the conditions of flight were considered the warning horn was overlooked by the flight department; maintenance and finally the flight crew. Suggest provisions for this type of ferry flight should have been worked out in advance or no ferry flight should have taken place. To figure out all the factors affecting the flight at the time of the ferry should not be done as it allows for various mistakes to be made. We do not fly like this on a normal day and should not be expected to figure things out as we go for a ferry flight.