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my hotel has a 5 wire,277v thermostat controling a 2 speed…

Customer Question
my hotel has a 5...
my hotel has a 5 wire,277v thermostat controling a 2 speed fan coil 4 pipe system .we would like to switch to a 24 volt automatic thermostat with digital readout .a 6th wire is difficult to add.any ideas?
Submitted: 6 years ago.Category: HVAC
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Answered in 1 hour by:
8/23/2011
HVAC Technician: Tim H., HVAC Professional replied 6 years ago
Tim H.
Tim H., HVAC Professional
Category: HVAC
Satisfied Customers: 3,971
Experience: Experienced in all aspects of HVAC, both residential and commercial.
Verified
Thanks for giving me the opportunity to help! I'm not understanding a 277 volt thermostat? Are you saying you have some kind of line voltage thermostat set up? If so, to switch to a 24 volt system would require a relay and transformer wired in.
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Customer reply replied 6 years ago
yes it is 277v at thermostat i did not expect that either.i would have to add a 6th wire(a nuetral) to operate ,code requires this additional wire be run with the others(bad news)however low voltage could be run seperate.many 6th wires already instaled
HVAC Technician: Tim H., HVAC Professional replied 6 years ago
Why not just add a relay and transformer and turn the line voltage setup into a 24 volt system?
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