Bryant 50YEW Design Manual page 63

50YEW Unit
L1 L2
GND
Secondary
Pump
EH
F C
W
Thermistor
Low Voltage Wiring
EH, G, C from 50YEW
and thermistor w iring
from Water Heater
to 50YEW Unit
*Use Drawings 4-1 to 4-5 for all connections except DHW
wiring. Use this diagram for DHW wiring for direct tanks
with a brazed plate heat exchanger and secondary pump.
Bryant Geothermal Heat Pump Systems
Drawing 4-2: THW Unit with Direct
Water Heater and Secondary
Heat Exchanger*
Water Heater
Disconnect Switch
L1
L2
RT RU DH
W2 F
WWSD
O Y2 C G GND
MPC
Typical Wiring:
Junction Box Near Water
Heater for Pump/Water
Heater Contactors
Water-to-Water System Design Guide
Part IV: Controls / Wiring Diagrams
Drawing 4-2: 50YEW Unit - Direct Water Heater &
Secondary Heat Exchanger*
Electric
Water
Heater
NOTE: Dashed lines represent
field wiring. Solid lines are
factory wiring.
50YEW Unit therminal strip
DH BT BT/OA OA
LAT/
SW LWT/ GND Y1
LWTL
LWTS
50YEW
Unit
22Jun07
DHW thermistor
Water Heater
Source
Water Heater
High
Supply
Voltage
Pump
Supply
Pump
Source
61