Please give me an additional recommendation regarding this problem.
The reviewer approved the material specifications submittal and the contractor already purchased the ACU but the unit must be rejected because of the working conditions. Since in iraq the maximum outside temperature is 50 degrees celcius.
* When outdoor temperature is more than 43 deg C or lower than 18 deg C (dry temperature) the air-conditioner can't operate Cooling mode.
Reviewer Comment:
The Reviewer overlooked the working conditions specified on the MSS of the A/C units however as a final check before the unit is to be given a REJ determination it should be understood that all mechanical equipment have extra capacity ranging from 10 % to 15 % and the actual capacity of the A/C unit is therefore should be equal to 1.1 to 1.15 times the A/C unit specified capacity times the de-rating factor attributable to the latter cited incapability of the unit to normally operate above 43 degree Celsius.
Therefore the Reviewer is requesting MSS containing the de-rating factor of the A/C unit to distinguish the tolerance of the equipment regarding the maximum outside design dry bulb temperature. If the maximum outside db temperature cannot accommodate the dry bulb temperature of the outside condition therefore the unit should be rejected.