Lennox ECOLEAN EAC 1804SM User Manual

10% 1,05 1,02 0,997 0,995 0,994
20% 1,10 1,05 0,996 0,985 0,993
30% 1,15 1,08 0,995 0,975 0,99
35% 1,18 1,10 0,994 0,965 0,987
31
Example: 10 % glycol in EAC 0251SMHN
Minimum ow: 3,16 m
3
/h x 1,02
Pressure drop: 175 x 1,05
System capacity x 0,995
Power input x 0,997
MINIMUM AMBIENT TEMPERATURE
OR WATER OUTLET TEMPERATURE
ETHYLENE
GLYCOL %
PRESSURE
DROP
WATER
FLOW
POWER
INPUT
CAPACITIES
COOL HEAT
FROM +5ºC TO 0ºC
FROM 0ºC TO -5ºC
FROM -5ºC TO -5ºC
FROM -10ºC TO -15ºC
2.7.- UNIT INSTALLATION
11.- For cooling or heat pump units the hydraulic system must contain the following components pump, buffer tank, expansion
device, safety valve, water lter, ow switch.
12.- To obtain the total water system pressure drop add the unit pressure drop + water pipework + ttings and terminal unit
pressure drops the water pump can be selected to provide the correct water ow across the heat exchanger.
13.- A water balancing valve is advised to ensure correct water ow.
IMPORTANT
If the outside temperature in the area where the EcoLeanTM unit is to be installed is likely to drop below 5°C, it is
very important to take the following precautions to avoid that water in the circuit freezing, that may produce damage
to the components.
- If unit has to work under low outside temperatures:
* Do not disconnect power supply in order that water pump starts when detects water temperatures below +5 ºC
(only Hydraulic and Hydronic models).
* If the outside temperature where the system is to be installed or the water outlet temperature is likely to drop below
5ºC, it is very important to use glycol anti-freeze.
The amount of anti-freeze required will vary depending on the minimum ambient temperature or the water outlet
temperature.
When the percentage of glycol increases the standard pump ow decreases, the pressure drop increases and the
cooling and thermal capacities drop. As a result the minimum ow must be multiplied by the coefcient shown in
the table:
Also is advisable to use the option “evaporator anti freeze protection”
Failure to follow this advice, may result in damage to the installation.
Optionally, an immersion heater can be supplied complete with safety thermostat and pressure switch tted in the
buffer tank of the cooling only chiller. A similar option is available for heat pump versions with the added advantage of a
supplementary heating source (Hydronic version units).
2.- INSTALLATION

Lennox ECOLEAN EAC 1804SM Specifications

General

Brand	Lennox
Model	ECOLEAN EAC 1804SM
Category	Chiller
Language	English