153
Else If: A compressor is diagnosed as being “Stuck On”
{
HVAC mode:
("Comp. Stuck On ")
Else The control is free to select the normal heating/
cooling HVAC modes:
{
HVAC mode:
("Off ")
— The unit is off and no operating modes are active.
HVAC mode:
("Tempering Vent ")
— The economizer is at minimum vent position but
the supply air temperature has dropped below the
tempering vent set point. Gas heat is used to
temper the ventilation air.
HVAC mode:
("Tempering LoCool")
— The economizer is at minimum vent position but
the combination of the outside-air temperature and
the economizer position has dropped the supply-air
temperature below the tempering cool set point.
Gas heat is used to temper the ventilation air.
HVAC mode:
("Tempering HiCool")
— The economizer is at minimum vent position but
the combination of the outside air temperature and
the economizer position has dropped the supply air
temperature below the tempering cool set point.
Gas heat is used to temper the ventilation air.
HVAC mode:
(“Re-Heat”)
—
The unit is operating in reheat mode.
HVAC mode:
(“Dehumidification”)
—
The unit is operating in dehumidification mode.
HVAC mode:
("Vent ")
—
This is a normal operation mode where no heating
or cooling is required and outside air is being
delivered to the space to control IAQ levels.
HVAC mode:
("Low Cool ")
—
This is a normal cooling mode when a low cooling
demand exists.
HVAC mode:
("High Cool ")
—
This is a normal cooling mode when a high
cooling demand exists.
HVAC mode:
("Low Heat ")
—
This is a normal heating mode when a low
heating demand exists.
HVAC mode:
("High Heat ")
—
This is a normal heating mode when a low
heating demand exists.
HVAC mode:
("Unocc. Free Cool")
—
In this mode the unit will operate in cooling but
will be using the economizer for free cooling.
Entering this mode will depend on the status of the
outside air. The unit can be configured for outside
air changeover, differential dry bulb changeover,
outside air enthalpy changeover, differential
enthalpy changeover, or a custom arrangement
of enthalpy/dewpoint and dry bulb. See the
Economizer section for further details.
}
NOTE: There is also a transitional mode whereby the machine
may be waiting for relay timeguards to expire before shutting
the machine completely down:
HVAC mode:
("Shutting Down ")
Содержание WEATHERMAKER 48AJ020
Страница 95: ...95 Fig 13 Typical Main Control Box Wiring Schematic A48 7787 ...
Страница 96: ...96 TO NEXT PAGE Fig 14 Auxiliary Control Box Wiring Schematic A48 7294 ...
Страница 97: ...97 LEN PORT FOR USE WITH NAVIGATOR Fig 14 Auxiliary Control Box Wiring Schematic cont A48 7809 ...
Страница 98: ...98 Fig 15 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 6866 ...
Страница 99: ...99 TO NEXT PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 7296 ...
Страница 100: ...100 FROM PREVIOUS PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown cont A48 7297 ...
Страница 101: ...101 Fig 17 Typical Electric Heat Control Schematic 50AJ AK AW AY Size 051 and 060 Units Shown A48 6689 ...
Страница 102: ...102 TO NEXT PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown A48 7298 ...
Страница 103: ...103 FROM PREVIOUS PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown cont A48 7299 ...
Страница 104: ...104 Fig 19 Controls Option Wiring Schematic A48 7810 ...
Страница 105: ...105 Fig 20 Small Chassis Component Location Size 020 035 Units A48 7301 ...
Страница 106: ...106 Fig 21 Large Chassis Component Locations Size 036 060 Units A48 7302 ...