
43
Installing the W
ater Circuit
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The water circuit guidelines and diagrams are for illustrative purposes and are to be used for references only; not all components and accessories
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local, state, and federal codes.
INSTALLING THE WATER CIRCUIT
Application Options
Application Options
Water Tank (Domestic Hot Water) + Floor Heating (Factory Default Setting)
Mode
Description
Three-Way Valve Operation
Two-Way Valve Operation
Cooling
Fan Coil Unit - Not Use
Floor Heating
Open
Fan Coil Unit - Use
Floor Heating
Close
Heating
Priority - Water Tank (Domestic Hot Water)
Water Tank (Domestic Hot Water)
No Control
Priority - Floor Heating
Floor Heating
No Control
Drain
Water Supply
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Wired Remote
Controller
Wi-Fi Module
Water Supply
Field Supplied
LG
Supplied
Remote
Temperature
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)ORZ6\GUR.LW
Hydro Kit
Balancing
Valve with
Flow Meter
Automatic Air
Separator
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Relief Valve
Service Port
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3UHVVXUH
Meter Check
Valve
Shut-Off
Valve
Shut-Off
Valve
Shut-Off
Valve
Shut-Off
Valve
Floor Heating
Fan Coil Unit
Water Tank
Temperature
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'RPHVWLF
Hot
Water
Tank
Strainer
Water Pump
Magnetic Dirt
Separator
Service Port
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([SDQVLRQ7DQN
Figure 25: Water Tank (Domestic Hot Water) + Floor Heating System Schematic.
• Verify that Hydro Kit PCB DIP Switch Group 2 is set correctly for water tank (domestic hot water) + floor heating installation applications
(this application is the factory default setting). (Refer to the Hydro Kit DIP Switch Settings pages in the Pre-Commissioning section.)
• The domestic hot water tank is for hot water applications and uses the indirect heat exchange method for heating;
do not add anti-
freeze like ethylene glycol to its water.
• For sensing air temperature at a specific area, choose a remote temperature sensor or a wired remote controller, depending on the Hydro
Kit PCB DIP Switch Group 3 setting. (Refer to the Hydro Kit PCB DIP Switch Settings pages in the Pre-Commissioning section.)
• When installing a floor heating system, to measure room temperature, use the Hydro Kit controller or a remote temperature sensor (sold
separately).
• See the Indirect Water Storage Tank Sensor Well and Sensor Installation information. To prevent condensation from forming in floor cooling
applications, set minimum / maximum cooling temperatures.
• For three-way valve and / or two-way valve control, see the Wiring section.
Table 17: Three-Way Valve and Two-Way Valve Control Application.
• When selecting a water tank,
ALWAYS use an INDIRECT tank
where the Hydro Kit water circuit
is isolated from the domestic
water system. Failure to follow
instructions will result in product
malfunction.
• The heating operation mode of
the water tank (domestic hot
water) is not a mode selection
using the remote controller. The
heating operation mode switches
the three-way valve operation to
the water tank operation based
on the water tank temperature.
• It is impossible to operate water
tank (domestic hot water) during
cooling mode.