Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) - Manual (Page 2)

Sequence of Operation . . . . . . . . . . . . . . . 2
General Operation . . . . . . . . . . . . . . . . 2-3
Set Point Control. . . . . . . . . . . . . . . . . . 3
Heating. . . . . . . . . . . . . . . . . . . . . . . 3
Cooling. . . . . . . . . . . . . . . . . . . . . . . 3
Economizer . . . . . . . . . . . . . . . . . . . . 4
Dehumidification . . . . . . . . . . . . . . . . . . 4
Reheat . . . . . . . . . . . . . . . . . . . . . . . 4
Supply Fan VFD . . . . . . . . . . . . . . . . . . 4
Exhaust Fan VFD . . . . . . . . . . . . . . . . . 5
Outdoor Air and Recirculated (Recirc) Air . . . . . 5
Energy Recovery Wheel Sequence . . . . . . . . 5
Alarms . . . . . . . . . . . . . . . . . . . . . . . 5
Controller Overview . . . . . . . . . . . . . . . . 6-7
Display Use . . . . . . . . . . . . . . . . . . . . . 8
Example of Parameter Adjustment . . . . . . . . . 8
Example of Alarms . . . . . . . . . . . . . . . . . . 9
Menu Overview . . . . . . . . . . . . . . . . . 10-11
Main Menu Overview . . . . . . . . . . . . . . 12-14
Menus
A. On/Off Unit . . . . . . . . . . . . . . . . . 14
B. Setpoint . . . . . . . . . . . . . . . . 15-21
C. Clock/Scheduler . . . . . . . . . . . . . . 22
D. Input/Output . . . . . . . . . . . . . . . . 22
E. Data Logger . . . . . . . . . . . . . . . . 22
F. Board Switch . . . . . . . . . . . . . . . . 23
G. Service
a. Information. . . . . . . . . . . . . . . . . 23
b. Overrides . . . . . . . . . . . . . . . 23-25
c. BMS Config . . . . . . . . . . . . . . 26-27
d. Service Settings
a. Working hour set . . . . . . . . . . . . 27
b. Probe adjustment. . . . . . . . . . . . 27
c. Password/Defaults . . . . . . . . . . . 27
H. Manufacturer
a. Configuration . . . . . . . . . . . . . . . 28
b. I/O Configuration . . . . . . . . . . . . . 28
c. Factory Settings . . . . . . . . . . . . 29-34
d. Initialization . . . . . . . . . . . . . . . . 35
Remote Display . . . . . . . . . . . . . . . . . . . 35
Points List
LonWorks® . . . . . . . . . . . . . . . . . . . . 36
ModBus/BACnet® . . . . . . . . . . . . . . . . . 37
Expansion I/O (pCOe) . . . . . . . . . . . . . . . . 38
Troubleshooting . . . . . . . . . . . . . . . . . . . 39
NTC Temperature Sensor Chart . . . . . . . . . . . 39
BACnet® MSTP Quick Start . . . . . . . . . . . . . 40
BACnet® IP/Eth Quick Start . . . . . . . . . . . . . 41
Economizer Commissioning Tool . . . . . . . . . . 42
Maintenance Log . . . . . . . . . . . . . . . . . . 43
Our Commitment. . . . . . . . . . . . . . Backcover
Table of Contents Sequence of Operation
The microprocessor controller can be configured for air
handler, energy recovery, dedicated outdoor air system
and make-up air applications. Each application utilizes
similar technologies for heating and cooling: chilled
water, hot water, indirect gas, electric heat, packaged
DX cooling, and packaged DX cooling with digital
scrolls. All set points, lockouts and delays are user
adjustable via the keypad display.
General Operation
UNIT START COMMAND: The microprocessor
controller requires a digital input to enable operation.
The unit can then be commanded on or off by this
digital input, the BMS or internal time clock.
• Initial delay
• Factory mounted and wired dampers are powered, if
equipped. (Outdoor air, exhaust air, and recirculation
air dampers).
• Exhaust fan and energy recovery wheel start after a
10 second delay, if equipped.
• Supply fan starts 15 seconds after the exhaust fan.
• Tempering operation begins (see modes below).
UNIT STOP COMMAND (OR DE-ENERGIZED):
• Supply fan, exhaust fan, tempering, and wheel are
de-energized.
• Outdoor air and Exhaust air dampers are closed after
a 10 second delay. Recirculation air dampers spring
open.
OCCUPIED/UNOCCUPIED MODES: The
microprocessor controller offers three modes of
determining occupancy: a dry contact, the internal time
clock or the BMS. When in the unoccupied mode, the
unit can be configured to shut down, or cycle on to
maintain the unoccupied room set points. The unit can
be temporarily overridden to the occupied mode via a
digital input or the keypad display.
The internal time clock can be configured with morning
warm-up to bring the space to the occupied set point
prior to occupancy.
• Occupied Mode:
- Exhaust fan on, if equipped
- Supply fan on
-
Heating (refer to Heating section)
- Cooling (refer to Cooling section)
- Energy Recovery Wheel control (refer to
Energy Recover Wheel section), if equipped.
- Damper control (refer to Outdoor Air and
Recirculated Air section), if equipped.
• Unoccupied Mode (Unit Off): Unit remains off when
in unoccupied mode.
• Unoccupied Mode (Cycle on Room): Optional
unoccupied mode when there is an unoccupied
recirculation damper and room temperature and/
or humidity sensor(s) connected to the controller.
The unit will cycle on to maintain unoccupied room
set points if there is a call for unoccupied heating,
cooling or dehumidification.
2 DDC Controller for Tempered Air Products
®