Steffes 5140 Owner & Installers Manual - Manual (Page 30)

internal SySteM WirinG DiaGraMS - line voltaGe
line Voltage Wiring Diagram - Model 5120
240V Or 208V SYSTEMS ONlY
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.
Use copper or aluminum conductors rated for 75 o C or higher for field connection of this device.
Appendix  A.05 Comfort Plus Hydronic
BLACK
COM COM
HEATING ELEMENTS
Element 2
Element 1
Element 3
Element 4
NO NO
75VA
240v 24v
TRANSFORMER
Element 7
Element 5
Element 6
Element 8
BLACK/YELLOW
LIMIT
WHITE/BLACK
CORE
L2 240
COM COM
NO NO
L2 120
RED
COM COM
BLACK
BLACK/YELLOW
CORE
LIMIT
To Optional Static
Heat Recovery System
COM
1/4 Amp
L1
COM
NO
COM COM
NO NO NO
RED
BLUE/WHITE
BLUE/BLACK
ORANGE
To Optional Air Handler
ORANGE
DAMPER
RESISTER
RESISTOR
SHRU LOOP PUMP
PRIMARY
BLACK BLUE RED
COM.
WHITE 250 °
Red & White To
Primary Loop Pump
(Max 1.2 AMPS)
Black & White
To Air Handler Pump
(Max 1.2 AMPS)
BLUE BLACK/YELLOW
RED
WHITE/BLACK
BLOWER
L2 240
L2 120
NO NO
COM COM
NO NO
1/4 Amp 5 Amp
225 °
N.C.
AUTO
RESET
N.C.
RESET
MANUAL
EXCHANGER
LIMITS
HIGH
BLACK
Cap.
4uf
CORE BLOWER
NEUTRAL LUG
CIRCUIT #2 CIRCUIT #3 CHARGE CIRCUIT #1 CHARGE CIRCUIT CONTROLS BLOWERS/ CHARGE
CONTROL CIRCUIT
SEE NOTE 1
SEE NOTE 2
Element Element Element
1,8
Relays
2,4,6
Relays
3,5,7
Relays
To To To
ELEMENT 1 ELEMENT 2 ELEMENT 3 ELEMENT 4
ELEMENT 5 ELEMENT 6
ELEMENT 7 ELEMENT 8
BOARD
EXPANSION
#1
GROUND
LUGS
L1
OR
WHITE