S
YSTEM
C
ONTROL
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
10
FIGURE 8: External Wirin
g
Dia
g
ram ROBERTS GORDON
®
EP-100 or EP-201 120 V 1 Ø Pump with Out-
side Air Blower
4.4 Outside Air Blower External Wirin
g
Dia
g
ram
The external
w
iring diagram abo
v
e sho
w
s the con-
nections for fo
u
r zones of system b
u
rners. System
b
u
rners can be either CORAYVAC
®
or VANTAGE
®
NP
(m
u
ltib
u
rner only).
The zones are connected to a single p
u
mp,
u
nless
zone 3 and/or zone 4 are selected to f
u
nction
w
ith
the optional p
u
mp 2. The external
w
iring diagram
abo
v
e sho
w
s connection to an EP-100 or EP-201 1 Ø
motor. The diagram also sho
w
s the connection
v
ia a
System Control
R
R
R
R
PS 2
PS 1
24
V
AC
COM
24
V
AC
COM
PS 1
PS 2
W
W
W
W
24 VAC
120 V
1
Ø
60 Hz
Ground
G
L
N
120 V
1
Ø
60 Hz
PUMP 2
PUMP 1
PO
W
ER
SUPPLY
N
L
Z1
Z2
Z3
Z4
N
N
N
N
L
L
L
L
All
b
urners must
b
e
connected to Ground
(
N
ot shown)
Zone 1 Zone 2 Zone 3 Zone 4
Pump
Pump
N
L
L
N
120 V
1
Ø
60 Hz
L
N
Outside Air
Blower
Outside Air
Blower
CR
Coil connections
to Pump L &
N
Outputs from
Control Panel
Live out to the
outside air
b
lower
Live in
Typical wiring for Load Relay
Package (P/
N
05023000)
Relay Receptacle
Back Plate
C
oil
C
oil
4
1
5
2
6
3
T
W
O PUMP SYSTEM (optional)
Optional power supply for Outside Air Blower
Pump 1 may
b
e used for all zones.
Pump 2 may
b
e used to control zone 3
and/or zone 4. Refer to Pump 1 for configuration.
Low voltage thermostats
located in heated zone
Zone
1
Zone
2
Zone
4
Zone
3
Pressure switch
located at pump 1
Pressure switch
located at outside air
b
lower
Pressure switch
located at pump 2
Pressure switch located
at outside air
b
lower
Содержание System Control
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