L.B. White AD250 - Manual (Page 12)

■
Complete installation and operating instructions are
provided separately with the SmartBox
™ .
■
U s e c u s to m e r s u p p l i e d w i r e n u t s a n d ot h e r
appropriate electrical terminals when interconnecting
the SmartBox
™ to the heater.
■
Refer to labels on wires for connections.
■
Ensure proper electrical wiring gauge for main power
supply from SmartBox
™ to heater.
■
Use 18 gauge electrical wiring for supply of DC volts
from SmartBox
™ to Smart Sense ™ variable rate gas
control on heater.
A. 115 Volt main power wiring from SmartBox
™
to
heaters.
Connect leads as shown in Fig.7 to heating Zones 1
and 2.
FIG. 7
B. Wiring from SmartBox
™
to the heater’s Smart Sense
™
variable rate gas control valve
a. Connect Smart Sense™ gas control valve wiring for
Zones 1 and 2 at SmartBox ™ leads as shown in
Fig.8.
FIG. 8
b. Route the wiring from these leads through the gas
inlet hole at the heater’s case. See Fig.9.
c. Attach 1/4 in. insulated female terminals to these
wires and connect to either terminal on the valve.
See Fig. 9.
FIG. 9
d. See Fig.10 for typical connections. Each
SmartBox ™ zone can control two heaters.
FIG. 10
INTERCONNECTION FOR VARIABLE HEAT
ROUTE WIRING
THROUGH HOLE
CONNECT WIRING TO TERMINALS
( NOT POLARITY SENSITIVE)
12
ZONE 1 OR ZONE 2 WIRING FROM
SmartBox™ TO Smart Sense™
VARIABLE RATE GAS CONTROL VALVE
VOL
TS T
O V
AL
VE
VA
LV
E
HEATER 1
GAS VALVE HEATER 2
GAS VALVE