10 INTERFACING GATEWAY TO DEVICES
●
If using the external power supply provided, apply power to the
gateway power terminal pins +L and -N as shown below.
Boiler Pins Pin # Gateway 6
Pin Terminal
Pin
Assignment
Power In
(+)
Pin 4
V+
White/Black
Power
In (-)
Pin 5
V-
Black
Frame
Ground Pin 6
FRAME
GND
NA
Figure 13: External Power Connections
4.4 Power-Up Gateway
There are two ways to power the gateway. One method is to
use the boiler PCB (printer circuit board). The other is to use the
included power supply in the box.
Check power requirements in the table below:
Power Requirement for Gateway External Gateway
Gateway
Current Draw Type
Gateway Family
12 V DC/AC 24 V DC/AC
30 VDC
GXXX001933 (Typical)
210 mA
130 mA
90 mA
GXXX001933 (Maximum)
250 mA
170 mA
110 mA
Note
These values are ‘nominal’ and a safety margin
should be added to the power supply of the host
system. A safety margin of 25% is recommended.
Figure 11: Required Current Draw for the Gateway
Apply power to the gateway as shown below in Figure 12.
●
Gateway accepts either 9-30 VDC or 12-24 VAC on pins 4 and 5.
●
Frame GND should be connected.
NUL
TI SW
FLO
W S
W
LP SW
OUT DOOR
DHW TANK
(+)
(-)
(+)
(-)
SY
ST
EM
SU
PP
LY
SY
ST
EM
RE
TU
RN
R
W
T/S ZONE 1
T/S ZONE 2
T/S ZONE 3
C
R
W
C
R
W
C
R
W
C
T/
S DH
W
3.LWCO
2.AC24VL
1.AC24VN
NULTI SW
R
W
T/S ZONE 1
T/S ZONE 2
T/S ZONE 3
C
R
W
C
R
W
C
R
W
C
T/S DHW
3.LWCO
2.AC24VL
1.AC24VN
CNC3
6-Pin
Phoenix
Connector
+
Tx +
Rx -
GND
+PWR
-PWR
FRAME
GND
Boiler
Front Panel
PCB
Boiler (controller)
Gateway Pin
Terminals
Pin Assignment
2. AC24VL
Pin 4
V +
1. AC24VN
Pin 5
V -
-
Pin 6
FRAME GND
Figure 12: Power Connections
