TCAEY-THAEY 115÷238 - Rhoss

TCAEY-THAEY-TXAEY 115÷238
water connections
Maximum water circuit content
All units are equi pped with an expansion tank that li mits the maxi mum
amount of wat er contained in t he s ys tem. I f the water contents exceed
the values indicated in the table, an additional expansion tank will be
required.
Model
Blend with ethylene glycol
0 % 10 % 20 % 30 %
115 l 190 170 160 140
117 l 190 170 160 140
122 l 190 170 160 140
124 l 190 170 160 140
127 l 190 170 160 140
130 l 190 170 160 140
133 l 370 340 340 290
233 l 370 340 340 290
238 l 370 340 340 290
Water data
Model 115 117 122 124 127 130 133 233 238
Safet y val ve barg 3 3 3 3 3 3 3 3 3
Exc hanger water c ont ents l 1,33 1,33 1,90 2,20 2,40 2,60 3,20 3,20 3,20
Tank wat er content ASP1 l 35 35 45 45 45 45 80 80 80
Tank water content ASP2 l - - - - - - 80 80 80
Expansion tank technical data
Model 115 117 122 124 127 130 133 233 238
Capacit y l 7 7 7 7 7 7 14 14 14
Pre-charging barg 1 1 1 1 1 1 1 1 1
Maxi mum expansion tank press ure barg 3 3 3 3 3 3 3 3 3
Use of anti-freeze solutions
○ The us e of ethylene gl ycol is rec ommended
if you do not wish t o drai n t he water from the
hydraulic s yst em during the wi nter st oppage, or
if the unit has to suppl y c hilled wat er at
temperatures l ower than 5°C The additi on of
glycol changes t he physic al properties of the
wat er and c ons equentl y the perfor mance of t he
unit. T he proper percent age of glyc ol to be
added to the s ystem c an be obtained from the
most demandi ng operating conditi ons fr om
thos e shown below.
○ Table "H" shows the multipliers which allow
the changes in performance of the units to be
det ermined in proportion t o t he required
percentage of ethylene glycol.
• The multipliers refer to the following
conditi ons: c ondenser inl et wat er temperat ure
30°C; c hilled water outlet temperat ure 7°C;
temperature differ ential at evaporator and
condens er 5°C.
• For different operating conditi ons, the same
coefficients c an be used as their variations ar e
negligible.
Table “H”
% glycol in weight 10 % 15 % 20 % 25 % 30 %
Freezing temp erature °C -5 -7 -10 -13 -16
fc QF 0,991 0,987 0,982 0,978 0,974
fc P 0,996 0,995 0,993 0,991 0,989
fc Δpw 1,053 1,105 1,184 1,237 1,316
fc G 1,008 1,028 1,051 1,074 1,100
fc QF = Cooling capacit y c orrection f actor.
fc P= Correction factor for the absorbed
electrical current.
fc Δpw = Correction fact or of the pr essure
drops in the evaporat or
fc G = Correction fac tor of t he glyc ol wat er flow
to t he evaporat or
49