12
5 SERIES OPTIHEAT 504W11 INSTALLATION MANUAL
Hydronic Section cont.
Thermostat
WaterFurnace Geothermal Storage Tank Thermostat
and Thermistor
HydroZone
or HydroStat
If using a Geothermal Storage tank there will be two red
wires exiting out of the top of the tank. These red wries
extend internally down to the thermistor/tank thermostat
section of the tank. Remove the bottom tank cover to expose
the red wires as well as the yellow tank thermistor wires.
HydroZone
If using HydroZone control, connect the two red wires to
the two yellow wires using wire nuts. Next, connect the two
red wires from the top of the Geothermal Storage tank to
“TS” and “GND” on the HydroZone. The “OAT” and “GND”
terminals on the HydroZone are used for an outdoor air
sensor.
HydroStat
If using HydroStat control, connect the two red wires to the
yellow wires using wire nuts. Next, connect the two red wires
from the top of the Geothermal Storage tank to “TS” and
“GND” on the HydroStat. The “OAT” and “GND” terminals
on the HydroStat are used to connect the controller to the
ELWT (Entering Load Water Temperature) well point sensor.
This sensor is located on the load side entering water line
inside the unit.
For other field installed controllers, these two red wires
will need wired to the appropriate sensor input terminals.
Another option for connection is to connect the thermostat
on the Geothermal Storage tank directly to “R” and “Y1” on
the ABC board.
LOAD PUMP
HYDRONIC
LOAD
Source OUT
P/T Ports
P/T Ports
Ball Valve
Dielectric
Unions
Dielectric
Unions
NOTES:
*
A 30 psi pressure relief valve (Part No: SRV30) should be used in
hydronic applications.
** Vent valve or P/T port at highest point in return line prior to ball valve.
1-1/2 in.
FPT
Expansion
Tank
Air
Vent
Pressure
Gauge
30 psi
RELIEF VALVE
Air
Separator
Back Flow Preventer /
Pressure Relief Valve
Source IN
NEW Series
GEO
STORAGE
TANK
Dip Tube
Ball Valve
Adequate rate of flow (GPM) is very important to system
performance and long term reliability. Follow the guidelines
for recommended flow in the recommendations table.
Summary of Contents for 5 Series 504W11 OptiHeat
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