AAON Orion VCCX2 User Manual

13
VCCX2 Controller Technical Guide
PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.
ASM01668 MODGAS-X Controller
The MODGAS-X Controller modulates up to (2) gas valves to maintain a desired
Discharge Air Temperature. It also controls the speed of the induced draft fan to
maintain proper combustion in the heat exchanger. The MODGAS-X Controller
connects to the VCCX2 Controller via an EBC E-BUS cable. Available only from
AAON.
Page 61
ASM01695 MODGAS-XWR2 Controller
The MODGAS-XWR2 Controller is designed to be used with White Rogers
valves only. It will modulate up to two (2) White Rodgers gas valves to maintain
a desired Discharge (Supply) Air Temperature (up to four (4) modulating gas
valves may be controlled when a second MODGAS-XWR2 Controller congured
as a slave module). It also controls the speed of the induced draft fan to maintain
proper combustion in the heat exchanger. The MODGAS-XWR2 Controller
connects to the VCCX2 Controller via an EBC E-BUS cable.
Page 62
ASM01670 MHGRV-X Controller
The MHGRV-X Controller controls a Modulating Hot Gas Reheat Valve to
maintain a desired Supply Air Temperature and Dehumidication setpoint. The
MHGRV-X Controller connects to the VCCX2 Controller via an EBC E-BUS
cable.
Page 60
ASM01687 MHGRV REHEAT Expansion Module
The MHGRV Reheat Expansion Module is designed to control one set of reheat
valves. The Reheat Expansion Module connects to the MHGRV-X Controller
via an EBC E-BUS communication cable. Connected together, the Reheat
Expansion Modules provide a system that allows the proper control of multiple
sets of valves.
N/A
ASM01688
ASM01689
PREHEAT-X Controller & PREHEAT-X-EXT Controller
The PREHEAT-X & PREHEAT-X-EXT Controllers are designed to control xed
stages of Preheat or optional modulating Preheat to maintain a desired Preheat
Leaving Air Temperature Setpoint. The PREHEAT-X Controller is limited to a
35°F Leaving Air Temperature Setpoint. The PREHEAT-X-EXT Controller has
an extended Leaving Air Temperature Setpoint range down to 0°F and should
only be used with the approval of AAON. The Controller directly connects to the
VCCX2 Controller or indirectly using an E-BUS Expansion Board via an EBC
E-BUS cable.
Page 63
ASM01691 VCC-X EM1 Expansion Module
The EM1 Expansion Module adds Title 24 Economizer Feedback and Chilled
Water applications. It also provides a Duct Static input for Exhaust Fan control,
Return Air Plenum Pressure Control, and Return/Exhaust Proof of Flow. It
provides 2 analog outputs for controlling a Return Air Bypass Damper and a
Return Damper in Return Air Bypass applications.. It also has 5 congurable
relay outputs. It connects with an EBC E-BUS cable to the VCCX2 Controller.
Pages
22, 45-48
OVERVIEW
Parts and Descriptions

AAON Orion VCCX2 Specifications

General

Brand	AAON
Model	Orion VCCX2
Category	Controller
Language	English