Electric Heater - CIAT Climaciat Instruction Manual

The quality of the water or antifreeze mixture must be checked periodically
Description
Hydrogen ion concentration
Calcium and magnesium content
Chlorine ions
Iron ions
Magnesium ions
Carbon dioxide
Hydrogen sulphate
Oxygen
Chlorine
Ammonia
Carbon/sulphate proportion
1/1.78°D = 1°Fr with 1°Fr = 10 g CaCO3/m
ppm = parts per million (mg/l)
ppb = parts per billion (mg/l)
9.5.1 Filling
Cut the electrical supply before carrying out any work
ƒ If filling and bleeding are not carried out correctly, air pockets may form, resulting in reduced exchanger performance.
ƒ Fill via the low point to prevent air from entering and water hammer.
ƒ Open the bleed valves and fill the coil.
ƒ Close the bleed valves when no more liquid comes out of them.
ƒ Check the tightness of the connections and retighten if necessary.
9.5.2 Cooling coil:
ƒ Make sure the pan is clean and that the condensate drainage is unobstructed.
ƒ Check whether the cells of the droplet eliminators (optional) are correctly installed.
9.5.3 Steam or superheated water coil:
Only operate the steam or superheated water coils when the fan is running, in order to avoid the risk of overheating.

9.6 Electric heater

9.6.1 Electric heater pre-commissioning checks:
Warning!
Follow the safety instructions (see § 2 - SAFETY INSTRUCTIONS).
ƒ Check for the presence of an air flow detection device.
ƒ Make sure the safety thermostats are electrically connected. Check the pin couplings (star as standard) as per the wiring
diagram.
ƒ Check the tightness of the connections: Tightening torque 4 Nm.
ƒ Remove any impurities using a vacuum cleaner and/or a cleaning product.
Do not use a cleaning product or cloths with detachable fibres (e.g. cotton/wool) on the heating elements.
ƒ Make sure the electric heater casing is clean and free from foreign objects
9.6.2 Electric heater system start-up:
ƒ Never operate the heater when the fan is stopped.
ƒ Check whether the safety thermostats operate correctly.
ƒ Check the fan delay time.
ƒ For variable flow operation, adapt the heater power to the air flow rate.
ƒ Check the power absorbed by each supply phase for the electric heater and compare these values to those shown on the
data plate.
ƒ Retighten the connections after 48 hours of operation.
ELECTRICAL DANGER: Door for directly accessing the electrical connections. Lock the door with the key once closed.
Symbol
pH
Water hardness (Ca/Mg)
CI‾
Fe 3+
Mg 2+
CO
2
H2S
O
2
CI
2
NH
3
HCO 2- / SO 2-
3 4
3
EN - 27
Consequences in case
Values
7.5 - 9 <7
>9
4 - 8.5 x ∆ >8.5
<50 ppm
<0.5 ppm
<0.05 ppm
<10 ppm
<50 ppb
<0.1 ppm
<0.5 ppm
<0.5 ppm
>1 <1
of non-compliance
Corrosion
Deposits
Deposits
Corrosion
Corrosion
Corrosion
Corrosion
Corrosion
Corrosion
Corrosion
Corrosion
Corrosion
EN