My Storage Manager cannot find my NAS

It doesn't see any NAS available in the local network. The computer run Win10. When I manually enter NAS IP, its says, that it is unavailable, 'cus it's in the another subnet and is not traceable. My NAS address is 192.168.1.137, while my computer's - 192.168.1.115 - so it doesnt' seem to be in the other subnet. Other PC in my flat (Win7) see NAS without any problem. Would anyone help?