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Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) User Manual

Page 16

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T

HIS

SCREEN

DISPLAYS

THE

ROOM

RELATIVE

HUMIDITY

SET

POINT

.

This screen only appears if Room RH is selected as the cold coil set point source,
and a room relative humidity sensor is wired into the controller.

The unit will reset the cold coil temperature set point to maintain the room relative
humidity set point.

Possible Set Point Sources:

Local – The room set point will be constant set from screen (exp. 55% RH).

BMS – The cold coil leaving air temperature set point can be adjusted over the
BMS via the Dehumidification Set Point (see Points List).

Room Humidity SetPoint

Active: 55.0%

Source: Local

55.0%

Room Humidity:

50.0%

T

HIS

SCREEN

DISPLAYS

THE

TEMPERATURE

SET

POINTS

FOR

THE

COOLING

COIL

.

This screen only appears if the unit is equipped with cooling.

When in dehumidification mode, the controller will maintain the active cold coil set
point. The active set point will be determined by the set point source selection.

Possible Set Point Sources:

Local – The supply set point will be constant set from screen (exp. 55°F). If a
dehumidistat was provided with the unit, the active set point will be reset to the
minimum set point.

BMS – The cold coil leaving air temperature set point can be adjusted over the
BMS via the Dehumidification Set Point (see Points List).

Room RH – The controller will reset the cold coil temperature set point to
maintain the room relative humidity set point (requires room relative humidity
sensor). See the Room RH Set Point screen in this menu for more information.

Room Dew Point – The controller will reset the cold coil temperature set point to
maintain the room dew point set point (requires room temperature and relative
humidity sensors). See the Room Dew Point Set Point screen in this menu for
more information.

T

HIS

SCREEN

DISPLAYS

THE

ROOM

DEW

POINT

SET

POINT

.

This screen only appears if Room Dew Point is selected as the cold coil set point
source, and a room relative humidity sensor and room temperature sensor are
wired into the controller.

The unit will reset the cold coil temperature set point to maintain the room dew
point set point.

Possible Set Point Sources:

Local – The room set point will be constant set from screen (exp. 55°F)

BMS – The cold coil leaving air temperature set point can be adjusted over the
BMS via the Dehumidification Set Point (see Points List).

Room DewPt Set Point

Active: 55.0°F

Source: Local

55.0°F

Room Dew Point:

46.0°F

Cold Coil Set Point

Active: 55.0°F
Source: Local

55.0°F

Max:

55.0°F

Min:

50.0°F

Cold Coil Set Point

Active: 55.0°F
Source: BMS

55.0°F

Max:

55.0°F

Min:

50.0°F

Cold Coil Set Point

Active: 55.0°F
Source: Room RH

55.0°F

Max:

55.0°F

Min:

50.0°F

Cold Coil Set Point

Active: 55.0°F
Source: Room DewPt 55.0°F

Max:

55.0°F

Min:

50.0°F

16

DDC Controller for Tempered Air Products

®