Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) - Manual (Page 42)

This tool includes information on commissioning the economizer functionality of
the DDC controller. The instructions below are based on factory default values.
Results may vary depending on the current settings of the unit.
The unit may delay up to three (3) minutes before going into economizer mode.
Commissioning the economizer functionality is done by overriding the outdoor
air and supply air conditions to simulate a scenario in which economizer is used
for cooling. NOTE: Overriding the physical inputs can be dangerous to the
equipment. Use caution when adjusting these values and RESET POWER WHEN
FINISHED!!!
The table below indicates the necessary override values for the corresponding
sensor to simulate economizer. The ‘Supply Temp Source’ can be found on the
‘Supply Temp Set Point’ screen. Navigate to the Analog Inputs Override menu
(Service -> Overrides -> Analog Inputs) and refer to the table below for the
appropriate override value.
In situations where mechanical cooling is available during economizer, increase
the outdoor air temperature to 57.1 F to unlock the cooling.
Economizer Commissioning Tool
Econ Type
Supply
Temp
Source
Outdoor Air
Temp
Cold Coil
Temp
Discharge
Temp
Room Air
Temp
Outdoor
Air Relative
Humidity
Temp Only
Outdoor Air
Reset
53.0ºF 75.0ºF 75.0ºF - -
Room Air
Reset
53.0ºF 75.0ºF 75.0ºF 75.0ºF -
Local/BMS 53.0ºF 75.0ºF 75.0ºF - -
Temp and
Dew Point
Outdoor Air
Reset
53.0ºF 75.0ºF 75.0ºF - 30%
Room Air
Reset
53.0ºF 75.0ºF 75.0ºF 75.0ºF 30%
Local/BMS 53.0ºF 75.0ºF 75.0ºF - 30%
Analog Input
Outside Temperature
ManualControl B005: ON
ManualPosition: 57.1
Value 57.1
Service Menu
a. Information
b. Overrides
c. BMS Config
I/O Manual Control
E. Components
A. Analog
B. Digital Inputs
42 DDC Controller for Tempered Air Products
®