Valent Controls IOM 45 IOM-C1-0616
Part Number 474626
Furnace Ramp Release Temp 2
Consult the factory before adjusting this
parameter.
Gas Heat Stage 1 Output
Turns on Stage 1 of gas heat. This is wired to
DO6 on the DDC1 I/O module.
Gas Heat Stage 2 Output
Turns on Stage 2 of gas heat. This is wired to
DO7 on the DDC1 I/O module.
Gas Heat Stage 3 Output
Turns on Stage 3 of gas heat. This is wired to
DO8 on the DDC1 I/O module.
Head Pressure Control Analog Output 1
Displays the signal, as a percentage of
maximum speed, being delivered to the head
pressure control VFD that is needed to maintain
the condensing temperature in cooling mode
and suction temperature in heating mode. This
is wired to AO3 on the DDC2 I/O module.
Head Pressure Control Digital Output 2
Displays the status of the head pressure control
digital output, which turns on or off one of the
condensing fans to maintain the condensing
temperature in cooling mode. This is wired to
DO4 on the DDC2 I/O module.
Heat Pump Water Valve A Output
Displays the signal, as a percentage of closed
position, that is delivered to water valve A to
maintain the condensing temperature in cooling
mode and suction temperature in heating mode.
This is wired to AO3 on the DDC1 I/O module.
Heat Pump Water Valve B Output
Displays the signal, as a percentage of closed
position, that is delivered to water valve B to
maintain the condensing temperature in cooling
mode and suction temperature in heating mode.
This is wired to AO4 on the DDC1 I/O module.
Heat Wheel Defrost Setpoint
The exhaust air temperature at which the heat
wheel goes into defrost mode to prevent ice
from forming on the wheel.
Heat Wheel Jog Duty Cycle
The duration of the jog cycle as a percentage of
the heat wheel jog period. This only applies to
ON/OFF heat wheel configurations.
Heat Wheel Jog Period
The frequency, in minutes, that the jog cycle will
operate. This only applies to ON/OFF heat wheel
configurations.
Heat Wheel Operating Mode
Adjusts the heat wheel operation during
Economizer Mode.
Heat Wheel Output
Indicates whether the controller is currently
commanding the heat wheel on or off. This is
wired to DO2 on the DDC2 I/O module.
Heat Wheel Speed / Bypass Damper Position
Indicates the energy recovery demand (in
percent) that the unit is requesting. If the unit is
equipped with a heat wheel with VFD, this
indicates the demand speed (in percent) to
which the heat wheel should modulate. If the
unit has a flat-plate heat exchanger, this
indicates the position of the bypass damper.
Heat Wheel Speed When Economizing
The speed at which the heat wheel will run when
Heat Wheel Operating Mode is set to On When
Economizing or Always On.
Heat Wheel Status
If a heat wheel rotation sensor is installed, this
indicates whether the heat wheel is Rotating or
Stopped. This is wired to U6 of the DDC2 I/O
module.
Heating Execution Time
Do not adjust unless given specific direction
from the factory.
Heating Integral Constant
Do not adjust unless given specific direction
from the factory.
Heating Proportional Constant
Do not adjust unless given specific direction
from the factory.
High/Low Pressure Trip Shutdown Unit if Circuits
Tripped
If Yes is selected, then the unit will shut down if
any or all compressors are tripped on high/low
pressure. (When shutdown occurs depends on if
point High/Low Pressure Trip Shutdown Circuit
is set for Any Tripped or All Tripped.) If No is
selected, the unit will continue to run regardless
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