Electrical Connections - Robertshaw SER Serie Manual De Instalación, Operación Y Mantenimiento

ELECTRICAL CONNECTIONS

3 position mode
selection switch
Custom defrost
mode jumper
selection
U
ELECTRICAL CONNEC-
TION TO A FURNACE
PRACTICAL TIPS
Caution:
• Never connect a 120 volt AC
circuit to the terminals of the
Accessory Control Contacts.
Only use the low voltage
class 2 circuit of the furnace
blower control.
For a Furnace Connected to a
Cooling System:
• On some older thermostats,
energizing the R and G
terminals at the furnace has
the effect of energizing Y at
the thermostat and thereby
turning on the cooling
system. If you identify this
type of thermostat, you must
use the "Alternate Furnace
Interlock Wiring".
Accessory Control Contact
(Open & Closes contact when HRV/ERV is ON/OFF)
- +
Diagnostic
LED
15-minute timer
(up to 5 timers)
Air Quality
Sensor
3 wires
Standard Accessory Control Contact
Standard Furnace Interlock Wiring
THERMOSTAT
TERMINALS
W R
FOUR
WIRE
TWO WIRE
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
Alternate Accessory Control Contact
Alternate Furnace Interlock Wiring
THERMOSTAT
TERMINALS
R
FOUR W
WIRE
TWO WIRE
heating only
W
R
WIRE JOINT
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
Found on
electrical
box
Dehumidistat Mechanical
2 wires Crank Timer
2 wires
and /
and /
or or
(1 only)
EDF5 or EDF2
(not shown)
2 wires
2 wires
* Wiring diagram of complete unit
inside of access panel
G Y
COOLING SYSTEM
TWO
WIRE
G
Y
COOLING SYSTEM
TWO
WIRE
Dehumidistat
On/Off
4 wires
HRV
ELECTRONIC BOARD
HRV
ELECTRONIC BOARD
19