Nhibernate Executiontimeout * No Lock

The below Nhibernate call is failing with "Execution Timeout Expired.  The timeout period elapsed prior to completion of the operation or the server is not responding."}

                        totalDenied = (From denialRep In denialRepQry
                                     Join claimRep In _claimRepository.Query On claimRep.Id Equals denialRep.Claim.Id
                        Join encounterRep In _encounterRepository.Query() On encounterRep.Id Equals claimRep.Encounter.Id
                        Join transRep In _transactionRepository.Query On denialRep.Transaction.Id Equals transRep.Id
                        Select denialRep.AdjustmentAmount).ToList()

I checked and I need to add Indexes

But with ado.net we could add Commandtimeout to 120 or 240 , how do we do in nhibernate 

Also How do we add No Lock to the queries