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AR Therm GG 4, GG 5 : Notice Technique | AI Chat | Fixfr
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User questions

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Patricia G.

How to perform the electrical and hydraulic connections for the boiler?

Electrical connection:

  • Provide an independent 220 V / 50 Hz power supply (Phase + Neutral + Earth).
  • Connect the power cable observing PHASE–NEUTRAL polarity and grounding.
  • Connect the heating pump with the outgoing cable from the control panel.
  • Connect an optional room thermostat by removing the existing bridge jumper.
  • Power the burner with the dedicated cable including the alarm light connection.

Hydraulic connections:

  • Connect the heating flow at the top rear of the boiler and the heating return at the bottom rear.
  • Install two isolation valves to allow draining.
  • Fit an automatic air vent on the heating flow.
G Y

Patricia G.

What are the different thermostats on the boiler and how are they used?

The boiler incorporates several thermostats:

  • Control thermostat (TRC): Regulates the boiler water temperature according to the season.
  • Safety thermostat (TSR): Manual reset safety device; verify it is not tripped before initial startup.
  • Room thermostat (TA, optional): Connects using the dedicated cable after removing the existing bridge jumper.
  • Anti-condensation thermostat (TM): Minimum setting of 55 °C.

Ensure all aquastat and thermometer probes are fully inserted into the thermowell with oil for optimal thermal transfer.

G Y

Patricia G.

What are the electrical and hydraulic connection requirements for the boiler?

Electrical: provide an independent 220 V 50 Hz supply (phase, neutral, earth); connect the supply cable to earth and to the mains respecting phase/neutral polarity; connect the heating circulator with the supply cable from the control panel; connect an optional room thermostat using the provided cable and remove the existing bridge; supply the burner with the special cable, including a conductor for the indicator lamp connected to the burner fault ALARM contact; check the earth connection of the control panel. Hydraulic: at the rear of the boiler, the heating flow is at the top and the heating return at the bottom; provide two isolating valves for draining and an automatic air vent on the heating flow.

G Y

Patricia G.

How is an optional room thermostat connected to the boiler?

Connect it using the provided cable and remove the existing bridge.

G Y

Patricia G.

How are the electrical and hydraulic connections made on the boiler?

Electrical connection: provide an independent 220 V 50 Hz supply (phase + neutral + earth); connect the supply cable to earth and to the mains respecting phase-neutral polarity; connect the heating circulator with the supply cable coming from the panel; connect an optional room thermostat using the provided cable after removing the existing bridge; supply the burner with the special cable including a conductor for the indicator lamp connected to the burner fault ALARM contact; check the control panel earth. Hydraulic connections: at the rear of the boiler, heating flow at the top and heating return at the bottom; provide two isolation valves for draining and an automatic air vent on the heating flow.

G Y

Patricia G.

What settings and checks are required for the boiler thermostats before first use?

Set the regulation thermostat according to the season. Check that the manual-reset safety thermostat has not tripped and reset it if necessary. The anti-condensation thermostat is specified with a minimum of 55 °C. Ensure that the aquastat and thermometer probes are fully inserted in the sensor well with oil to improve thermal contact.

G Y

Patricia G.

How is an optional room thermostat connected?

The optional room thermostat is connected using the cable provided for this purpose, after removing the existing bridge.

G Y

Patricia G.

How to connect the electrical and hydraulic supply for the boiler?

For electrical connections, provide a dedicated 220 V 50 Hz power supply (Phase + Neutral + Earth), connect the heating circulator, optional room thermostat (removing the existing bridge), and burner cable. For hydraulic connections, attach the heating flow at the top rear and return at the bottom rear, installing two isolation valves and an automatic air vent on the flow.

G Y

Patricia G.

What thermostats are present on the boiler and how are they configured?

The boiler features an adjustment thermostat (TRC) to set according to the season, a manual-reset safety thermostat (TSR), an optional ambient thermostat (TA) connected by removing the existing bridge, and an anti-condensation thermostat (TM, set to minimum 55 °C). Thermostat bulbs must be fully inserted into the bulb well filled with oil.

G Y

Patricia G.

How are the electrical and hydraulic connections made on the boiler?

For the electrical connection, provide an independent 220 V 50 Hz supply with phase, neutral and earth; respect phase-neutral polarity and connect the supply cable to earth and to the mains. Connect the heating circulator with the supply cable from the control panel. Connect any room thermostat using the provided cable and remove the existing bridge. Supply the burner with the special cable, including a conductor for the indicator lamp connected to the burner fault ALARM contact. Check that the control panel is properly earthed. For hydraulic connections, the heating flow is at the top rear and the heating return at the bottom rear. Provide two isolation valves for draining and an automatic air vent on the heating flow.

G Y

Patricia G.

How are the boiler thermostats set, connected or reset?

The adjustment thermostat regulates boiler temperature and should be set according to the season before first commissioning. The safety thermostat has manual reset; before commissioning, check that it has not tripped and reset it if necessary. An optional room thermostat is connected using the provided cable after removing the existing bridge. The anti-condensation thermostat has a minimum value of 55 °C. Aquastat and thermometer probes must be fully inserted into the pocket with oil to improve thermal contact.

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