Steffes 7140 - Manual (Page 35)

Appendix
Comfort Plus Commercial Hydronic Appendix
n
A.08
Line Voltage Wiring Diagram - Model 7140
240V OR 208V SYSTEMS ONLY
Use copper or aluminum conductors rated for 75 o C or higher for field connection of this device.
NOTE 1: Line Voltage Field Wiring Connections. See Figure 8 for information on proper circuit phasing.
NOTE 2: For more information regarding pump (circulator) wiring, reference Figures 9, 15 and 16 in the
Installation section of this manual.
240v / 24v
TRANSFORMERS
#15
#12
Element
Element
#9
Element
#6
Element
Element
#3
To Optional Static
Heat Recovery System
Element Element
#1
#4
Element Element
#2
#5
Element
#7
#10
Element
#13
Element
BLACK
ORANGE
BLUE/WHITE
ORANGE
BLACK
RED
BL
AC
K/
Y
E
L
L O
W
BLUE
RESET
AUTO
EXCHANGER
LIMITS
225 °
N.C.
N.C.
RESET
MANUAL
250 °
Element
Element
#8
#11
Element
#14
BASE IO BOARD
COM COM
CORE BLOWER
BLACK/YELLOW
RESISTOR
DAMPER
RESISTER
RED
5 Amp 5 Amp
L2 240
L2 120
BLOWER
1/4 Amp 1/4 Amp
COM.
HIGH
WHITE
BLACK
COM COM
NO NO
RELAY
NO NO
COM COM
FAN ON
RELAY
NO NO
COM COM
NO NO
4uf
Cap.
60A
CIRC
U
IT #3
60A
C
IRCUIT
CHARGE BLOWER
S/
CO
N
T
ROLS
15A
BL
AC
K
CHARGE CHARGE CIRC
U
IT #2
CIRC
U
IT #1
60A
RED BL
UE
CHARGE CIRC
U
IT #4
60A
BROW
N
L1
BLUE/BLACK
To Optional Air Handler
WHITE/BLACK
WHITE
OR
Red & White To
Primary Loop Pump
(Max 1.2 AMPS)
Black & White
To Air Handler Pump
(Max 1.2 AMPS)
SEE NOTE 2
NEUTRAL LUG
CONTROL CIRCUIT
GROUND
LUGS
SEE NOTE 1