Options - Lennox ECOLEAN EAC Series Installation, Operating And Maintenance

1.- GENERAL CHARACTERISTICS
1.10.- AVAILABLE OPTIONS
TANK ANTI-FREEZE HEATER AND WATER TANK ELECTRICAL HEATER (available only for Hydronic version)
An immersion heater can be supplied complete with safety thermostat and pressure switch fitted in the buffer tank, or an anti-freeze and
supplementary heater (heat pump units only).
Tank Anti-freeze heater: It starts when water temperature in the buffer tank is lower than + 5ºC (Not for units with low water temperature kit).
Water tank electrical heater: Heat pump units only. The heater works as anti-freeze heater as explained before and as supplementary heater,
when inlet warm water reaches a temperature below a value selected (example: 30 ºC) through an independent thermostat included.
THE POWER INPUT IS:
(*) Heat pump units only
1.10.3.- REFRIGERANT CIRCUIT OPTION
HP & LP RERRIGERANT GAUGES
Visualize the high and low pressures of the refrigerant circuit.
LOW WATER TEMPERATURE
Necessary for water outlet temperatures below +5ºC.
There are three different kits, which depend for selecting on the water outlet temperature desired, as the following table shows:
KIT LOW WATER TEMPERATURE 0ºC
KIT LOW WATER TEMPERATURE -5ºC
KIT LOW WATER TEMPERATURE -10ºC
LOW AMBIENT KIT (-15ºC). COOLING
The cooling only unit can operate down to an ambient temperature of -15ºC (standard unit just can operate down to 0ºC).
LOW AMBIENT KIT (-15ºC) HEATING
The reverse unit can operate in heating mode down to an ambient temperature of -15ºC (standard unit just can operate down to -10ºC).
THERMOSTATIC HOT GAS INJECTION
Supplies hot gas which is injected into the evaporator gas to increase the suction pressure if the chilled water temperature falls to low. It
can be used to allow the unit to operate at reduced capacity, if the water temperature falls below the set point (5ºC). It is controlled via the
microprocessor controller ON at (5ºC) and OFF (6ºC) for example. This option is NOT available for units selected with low water temperature
option.
1.10.4.- HYDRAULIC OPTIONS
FLOW SWITCH (included on Hydraulic and Hydronic versions).
The flow switch stops the unit if water flow is lower than the minimum.
WATER FILTER (included on Hydraulic and Hydronic versions).
The water filter must be fitted in the water inlet of the unit, it protects the unit against particles (greater than 1 mm) getting inside the water
circuit, and prevents the water interchanger gets dirty.
IN/OUT ISOLATING VALVES
To fit at inlet and water outlet of the unit. Isolating the unit from water circuit, so service and maintenance of the unit will be easier.
For units EAC 1003 to 1804 SMHN this option includes another valve in order to isolate the buffer tank.
TWIN PUMPS KIT (only available on Hydraulic and Hydronic versions)
It is formed by two-water pump mounted on parallel and with same characteristics as the single one. Only one pump is working the other
remains on stand by.
When the water pump, which is operating cuts out, and the pump turns off, automatically starting the water pump on stand by.
It is possible to select which one of the pumps we want to be working through an external switch supplied with the kit.
With the twin pumps, the available static pressure will decrease 5% from the available static pressure with one water pump only.
1.10.5.- CONTROL OPTIONS
MODBUS
It is possible to connect several units with a communication system (MOD BUS Protocol).
DYNAMIC SET POINT
It changes cooling and heating set point according ambient temperature (an extra sensor must be installed).
REMOTE DISPLAY
It controls and shows the unit's operating, it may be installed until 50 m from the unit.
MODELS
Voltage
Tank anti-freeze heater
Water tank electrical heater*
Denomination
0251SM to 0431SM 0472SM to 0812SM 1003SM to 1403SM 1604SM / 1804SM
V
KW 2,25
9
KW
Application duty on the water outlet temperature
For water temperatures below 5ºC to 0ºC
For water temperatures below 0ºC to -5ºC
For water temperatures below -5ºC to -10ºC
24
3~400V
2,25 6,0
12 24,0
9
36,0