Orion System MODGAS-XWR - Manual (Page 27)

MODGAS-XWR Technical Guide
APPENDIX B
27
MODGAS-XWR Replacement of MODGAS II
Replacing the MODGAS II with the
MODGAS-XWR
The retrofi t replacement involves a few easy steps. Refer to Figure
12, below.
STAND-ALONE MODE OPERATION
Step 1: Disconnect power from the MODGAS II Controller.
Step 2: Disconnect the Supply Air Temperature Sensor from the
MODGAS II and wire it to the MODGAS-XWR. If the Supply
Air Temperature Sensor is being shared with a Stand-
Alone MHGRV-X Controller, maintain the same wiring
with
the MHGRV-X Controller.
Step 3: Wire all other inputs and outputs per Figure 2, page 5.
Step 4: Set the SAT Options Jumper per Table 8, page 26.
Step 5: Connect power to the MODGAS-XWR Controller.
COMMUNICATIONS MODE OPERATION
Step 1: Disconnect power from the MODGAS-XWR Controller.
Step 2: The Supply Air Temperature Sensor needs to remain
installed on whatever controller it is currently on. If it
is currently installed on the MODGAS II Controller, then
reinstall it on the MODGAS-XWR Controller.
Step 3: Set the SAT Options Jumper per Table 9, page 26.
Step 4: Connect power to the MODGAS-XWR Controller.
Figure 12: MODGAS-XWR Controller
I C Cable
Connects To
Main Controller’s
Expansion
Port
2
See Tables 8 & 9, Page 26
For
Settings.
Only One Supply Air
Temperature Sensor
Can Be Used Per Application.
SAT OPTIONS
Jumper
See Table 7, Page 26
For Connection Settings.
YS102530 REV 1
GAS
V
ALVE
2
GAS
V
AL
V
E
1
PO-IGN2
PO-IGN1
COMMON
RLY4
RLY3
RLY2
RLY1
WATTMASTER
CONTROLS
MADE IN USA
AUX BIN
HEAT EN
RESET IN
OPTIONS
SAT
GND
AUX AIN
GND
STATUS
ALARM
COMM
POWER
ANODE
AN
OD
E
AN
O D E
M
ENTER
UP
DOWN
ALARM
MENU
OE377-26-00060
MODGAS-XWR
AAON No.: V20780
WattMaster No:
#SW000055
Rev.: 1A
E-BUS
CONNECT
I2C
CONNECT
+24
V
AC
GND
CONTACT RATING
IS 1 AMP MAX
@ 24 VAC
HEAT 1
LOW SPEED
FAN
PROOF OF IGNITION 1
PROOF OF IGNITION 2
GAS VALVE 2
GAS VALVE 1
GAS
V
AL
VE
TERMINALS
HEAT 2
COMMON
RELAY OUTPUT
TERMINALS
INPUT TERMINALS (TYPE)
HEAT ENABLE (BI)
AUX. (BI)
GND
RESET INPUT (AI)
SAT INPUT (AI)
GND(AI)
GND
AUX. (AI)
www.aaon.com
MODGAS-XWR CONTROLLER
(OE377-26-00060)