Technical data

Installation, user and maintenance manual – GAHP-GS/WS
35
Fill the hydraulic circuit to at least the minimum amount and add inhibited mo-3.
noethylene glycol to a volume percentage in proportion to the minimum winter
temperature in the installation area (see Table 5.3 Technical data for filling the hy-
draulic circuit → 36). Robur recommends using inhibited corrosion resistant mo-
noethylene glycol.
Glycol antifreeze may not be used on condition that the antifreeze function, which
runs the circulation pumps, is activated at the CCI/DDC. This function requires the
appliance to be ALWAYS powered up (electricity and gas) and power failures ex-
cluded, otherwise the manufacturer declines all contractual and extra-con-
tractual liability for consequent damage.
Check the filter on the return pipe for impurities; clean it if necessary.4.
Bring the plant to the correct pressure, making sure that the water pressure is not 5.
less than 1 bar and not over 2 bar, and run the circu lation pump for at least 30 min-
utes. Check the water filter again and clean it if necessary.
The technical data (Tables 3.1 GS HT/LT technical data → 12 and 3.2 WS technical da-
ta → 13) regarding the cold circuit refer to water with 25% glycol content, so that no
correction factor need to be applied to Table 5.3 Technical data for filling the hydraulic
circuit → 36.
To facilitate the operation of bleeding air from the hydraulic circuit, the appliance is
equipped with an additional manual air bleeding valve.
HOT CIRCUIT (Heating, sanitary hot water)
Check that the system delivery and return are correctly connected to the appli-1.
ance’s respective fittings (see Figure 3.1 Size → 15).
Activate the automatic air purging valves of the plant and open all thermostatic 2.
valves.
Fill the hydraulic circuit to at least the minimum amount and add inhibited mo-3.
noethylene glycol to a volume percentage in proportion to the minimum winter
temperature in the installation area (see Table 5.3 Technical data for filling the hy-
draulic circuit → 36). Robur recommends using inhibited corrosion resistant mo-
noethylene glycol.
Glycol antifreeze may not be used on condition that the antifreeze function, which
runs the circulation pumps and the appliance, is activated at the CCI/DDC. This
function requires the appliance to be ALWAYS powered up (electricity and gas) and
power failures excluded, otherwise the manufacturer declines all contractual
and extra-contractual liability for consequent damage.
Check the filter on the return pipe for impurities; clean it if necessary.4.
Check that the siphon on the condensate discharge has been filled with water as 5.
indicated in Paragraph 5.5 CONDENSATE DISCHARGE → 31 under "Loading the
siphon".
Bring the plant to the correct pressure, making sure that the pressure of the water 6.
in the plant is not less than 1 bar and not over 2 bar, and run the circulation pump
for at least 30 minutes. Check the water filter again and clean it if necessary.