recommendation letter of small split unit

I would be grateful if you could help me to correct the following letter.

As per client’s request with respect to the installation of a small split type air condition unit at ABC 4/F, the total length of refrigerant piping has to be about 50meters, the split type unit cannot be operated properly in accordance with the unit’s technical specification. On the other hand, the cooling capacity of a big split type air condition unit will be degraded about 17% under the same condition. Following table show the summary of unit’s performance.

Cooling capacity of Unit Percentage of cooling capacity of unit after correction
Small Split type unit Improper operation

Big type unit 83%

As a result of the unit’s specification, a small split type air condition unit is not recommended to be installed in the location.