EngA CenCon User Manual

CenCon
25
TERMINAL DESCRIPTION
Terminal
Type
Name
Description
Value
H N
Power Supply
24 Vac
GND
Ground
Connect to chassis.
LmA
B
Modbus
Internal
Network
FbG AI Feedback Gas
Compares the ball valve actuator feedback signal to the
demand signal.
0-10 Vdc
MBV AO
Modulating ball
valve
Modulating gas valve actuator output. 0-10 Vdc
CAS DI
Combustion air
switch
Optional proof of combustion air flow. 24 Vac
BFS DI
Blocked flue
switch
Normally closed, opens on blocked flue. 24 Vac
EnH
DI
Enable heat
24V must be applied to allow heating
function.
24 Vac
PV1, PV2 DO Pilot valve
Disables the pilot flame once the main burner has been
established.
24/120 Vac
SR1, SR2
DO
Safety relay
Secondary safety lockout contacts
24/120 Vac
FR1, FR2
DO
Flame relay
Flame relay enable contacts.
24/120
Vac
FbV DI Feedback valve
Feedback signal from the safety shut off valve
(SSOV)
.
Wired directly to valve.
24/120 Vac
VN Valve neutral
Neutral feedback signal
from the safety shut off valve
(SSOV).
HL
DI
High limit
Normally closed, opens on high
temperature.
24 Vac
CP AI
Condensate
probe
Condensate probe sensor input. Ohms (Ω)
MX1, MX2
AO
Maxitrol Valve
DC current output to the Maxitrol modulating valve.
mA
dc
ECO AO ECM Demand
Electronically Commutated burner motor control output
signal.
0-10 Vdc
PWM PWM
ECM rpm
feedback
Pulse width modulation feedback signal from
Electronically Commutated burner motor.
PWM
ECC
ECM Neutral
Neutral reference to ECO output signal.

EngA CenCon Specifications

General

Brand	EngA
Model	CenCon
Category	Controller
Language	English