Condensation Drain Tray; Hydraulic Set-Ups 120÷130 - Hitecsa EWMIM Serie Manual De Instalación, Uso Y Mantenimiento

If the draining operation is felt to be too much trouble, ethylene glycol
may be mixed with the water in suitable proportions in order to
guarantee protection from freezing.
IMPORTANT!
Mixing the water with glycol modifies the
performance of the unit.
The use of ethylene glycol is recommended if you do not wish to drain
the water from the hydraulic system during the winter stoppage, or if the
unit has to supply chilled water at temperatures lower than 5°C. The
addition of glycol changes the physical properties of the water and
consequently the performance of the unit. The proper percentage of
glycol to be added to the system can be obtained from the most
demanding functioning conditions from those shown below. Table "H"
shows the multipliers which allow the changes in performance of the
units to be determined in proportion to the required percentage of
ethylene glycol.
The multipliers refer to the following conditions: condenser inlet air
temperature 35°C; chilled water outlet temperature 7°C; temperature
differential at the evaporator 5°C. For different functioning conditions,
the same coefficients can be used as their variations are negligible.
Table "H"
Design air
2 0
temperature in
°C
% glycol in
10 15
weight
Freezing
-5 -7
temperature in
°C
fc G 1,025 1,039 1,054 1,072 1,093 1,116 1,140
fc Opw 1,085 1,128 1,191 1,255 1,319 1,383 1,468
fc QF 0,975 0,967 0,963 0,956 0,948 0,944 0,937
fc P 0,993 0,991 0,990 0,988 0,986 0,983 0,981
fc G = Correction factor of the evaporatot glycol water flow.
fc Opw = Correction factor of the evaporator pressure drops.
fc QF = Cooling capacity correction factor.
fc P = Correction factor for the total absorbed electrical current.
II.7.8

CONDENSATION DRAIN TRAY

Heat pump models are complete with a condensate drain tray and
heating electrical resistance that prevents ice from developing under
the coil in cases of harsh temperatures. Electrical resistance is
regulated according to the outdoor temperature. The factory-set
activation set- point is 2°C.
The condensate drain tray has two draining points to ease water
evacuation.
II.7.9 HYDRAULIC SET-UPS 120÷130
System configuration for P0lPI0lP1 set up
IOM_EWMIM-EWMIMH_120a262_207984_200601_ES-EN-FR-DE-IT
-3 -6 -10 -15 -20
20 25 30 35 40
-10 -13 -16 -20 -25
EWMIM COOLING ONLY-EWMIMH HEAT PUMP 120÷130
You must channel condensate draining. When the outdoor temperature
is around zero, the water normally produced during the coil defrosting
could form ice and make the flooring near the unit installation area
slippery.
We recommend diverting using an inclined pipe, minimising the number
of curves and pressure drops to facilitate draining.
EWMIM COOLING ONLY-EWMIMH HEAT PUMP 138÷262
We recommend diverting using an inclined pipe, minimising the number
of curves and pressure drops to facilitate draining.
When the outdoor temperature is around zero, the water normally
produced during the coil defrosting could form ice and make the flooring
near the unit installation area slippery.
For the heat pump models, the factory-installed RAB heating resistance
accessory is available which prevents and prevents the formation of ice
under the battery in the event of very cold temperatures. Electrical
resistance is regulated according to the outdoor temperature.
1 Unit
2 Inertial storage tank (if necessary)
60
ADVANCE