Daikin EWAP460MBYN [413/452] 1000 kg m³
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Daikin EWAP460MBYN [413/452] 1000 kg m³

Daikin EWTP160MBYN [413/452] 1000 kg m³
ESIE05-07 Pre-Test Run Checks
Part 4 – Commissioning and Test Run 4–7
3
4
5
1
with:
Water quality The table below contains the required water quality specifications.
Notation Dimension Description Default
V [m³] Required system volume —
Q [W] Cooling capacity at the lowest capacity
step of each chiller in the system
—
t [s] Minimum cycling time allowed by the com-
pressor
240 s
ρ
[kg/m³] Specific mass of the fluid
ρ
water
= 1000 kg/m³
d [K] Thermostat step difference d
inlet water control
= 3 K
C
w
[J/kgK] Specific heat capacity of the fluid C
w, water
= 4186 J/kgK
Evaporator water Heated water (low temperature)
Tendency if out of
criteria
Circulating
water (< 20°C)
Supply water Circulating water
(20°C-60°C)
Supply water
Items to be checked
pH at 25°C 6.8~8.0 6.8~8.0 7.0~8.0 7.0~8.0 Corrosion + scale
Electrical conductivity mS/m
(at 25°C)
< 40 < 30 < 30 < 30 Corrosion + scale
Chloride ion
mg Cl
-
/l
< 50 < 50 < 50 < 50 Corrosion
Sulphate ion
mg SO
4
2-
/l
< 50 < 50 < 50 < 50 Corrosion
M-alkalinity (pH 4.8) mg CaCO
3
/l < 50 < 50 < 50 < 50 Scale
Total hardness mg CaCO
3
/l < 70 < 70 < 70 < 70 Scale
Calcium hardness mg CaCO
3
/l < 50 < 50 < 50 < 50 Scale
Silica ion mg SiO
2
/l < 30 < 30 < 30 < 30 Scale
Items to be referred to
Iron mg Fe/l < 1.0 < 0.3 < 1.0 < 0.3 Corrosion + scale
Copper mg Cu/l < 1.0 < 0.1 < 1.0 < 0.1 Corrosion
Sulphide ion
mg S
2-
/l
Not detectable Not detectable Not detectable Not detectable Corrosion
Ammonium ion
mg NH
4
+
/l
< 1.0 < 0.1 < 0.3 < 0.1 Corrosion
Remaining chloride mg Cl/l < 0.3 < 0.3 < 0.25 < 0.3 Corrosion
Free carbide mg CO
2
/l < 4.0 < 4.0 < 0.4 < 4.0 Corrosion
Stability index – – – – Corrosion + scale
ESIE05-07.book Page 7 Wednesday, October 11, 2006 10:42 AM

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