Roberts Gorden UltraVac NEMA 4 - Manual (Page 23)

SECTION 4: T YPICAL E XTERNAL D IAGRAMS
17
ROBERTS GORDON ® ULTRAVAC™ Central Controller External Wiring (continued)
for 115 V and
230 V input
VFD models.
VFD Power
Supply
(1 Ø input
VFD model shown,
see NOTE 3)
L1 L2
T
1
Pump
VFD Assembly
( 1 Ø input
VFD model shown)
L1 L2
L1 L2
L1 L2
L1 L2
L1 L2
230 V
3 Ø
0-60 Hz
To
Terminal 5
To
Terminal 2
L1 L2
Zone 3
Burners
L1 L2
L1 L2
Outside Air
Blower
(optional)
Zone 2
Burners
Zone 1
Burners
T
2
T
3
Continued
From
Previous Page
To Terminals
13 and 14
Motor Power Supply
(see NOTE 7)
460 V
3 Ø
0-60 Hz
for 460 V
input VFD
models.
or
M16/12.P M16/12.P
1 2 5 6 11 13A 13B 13E 25 16 17
PE PE W V U
L2/N L1 B- PE B+