Carrier MODU-PAC 50DF - Manual (Page 21)

50DF
• Remote control box containing 6-system status lights
and a 7-day clock which shall control the unoccupied to
occupied time periods; with a 10-hour spring carryover;
contain a 5-hour manual override switch for entering unit
in occupied mode during normally unoccupied time periods.
(Option or Accessory)
Barometric relief damper — An automatic damper to
relieve positive building pressure shall be provided.
Electronic sensing device shall be of a solid-state dual
set point type. It shall be one of the following:
• Electronic thermostat with integral temperature sensor.
Capable of automatic heating to cooling changeover with­
out system switches.
• Transmitter with a remote temperature sensor. Capable
of automatic heating-to-cooling changeover without system
switches.
• Electronic thermostat with integral sensor on a subbase.
Subbase shall provide manual HEAT-COOL-AUTO.-OFF
system switching and AUTO.-ON fan switching.
• Transmitter on a subbase with a remote sensor. Subbase
shall provide manual HEAT-COOL-AUTO.-OFF system
switching and AUTO--ON-FAN switching.
Each Thermostat or Transmitter shall have these features:
— Separate locking heating and cooling set point adjust­
ment levers concealed under a locking cover.
— An adjustable (3 F — 30 F) “dead-band” between heating
and cooling set points
— Two LED’s, concealed under locking cover, to provide
remote checkout of control system.
— Load reactive time delays to insure stable system
performance.
— Capability to utilize 4 remote space sensors for control
of average temperature of conditioned space.
(Accessory)
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