Danfoss AR05 017 Series Installation, Operation And Maintenance Instructions page 17

Legend
Components of the unit and hydronic module

Victaulic screen fi lter

Expansion tank

Safety valve

Available pressure pump
Note: x 1 for a single pump, x 2 for a dual pump

Air purge

Water drain valve
Note: A second valve is located on the heat exchanger leaving piping

Pressure sensor
Note: Gives pump suction pressure information (see installation manual)

Temperature probe
Note: Gives heat exchanger leaving temperature information (see installation
manual)

Temperature probe
Note: Gives heat exchanger entering temperature information (see installation
manual)

Pressure sensor
Note: Gives unit leaving pressure information (see installation manual)

Check valve
Note: x 2 for a dual pump, not provided for a single pump

Plate heat exchanger

Water heat exchanger frost protection heater
Hydronic module - sizes 039-078
Dual pump shown
Installation, operation and maintenance instructions - VMGFE102
Typical hydronic circuit diagram with hydronic module
Installation components

Temperature probe well

Air vent

Flexible connection

Shut-off valve

Screen fi lter (obligatory for a unit without hydronic module)

Pressure gauge

Water fl ow control valve
Note: Not necessary for a hydronic module with a variable-speed pump

Charge valve

 Frost protection bypass valve (when shut-off valves [17] are closed during winter)
--- Hydronic module (unit with hydronic module)
Notes:
• Units without hydronic module are equipped with a fl ow switch and two
temperature sensors (8 and 9).
• The pressure sensors are installed at connections without Schraeder valves.
Depressurise and drain the system before any intervention.
Hydronic module - sizes 080-160
Dual pump shown
17