5. Installation information
YKB/YLM 2nd
4 - 122
S.D. R2
MEE15K022
5-4-2. Circulating water
Follow the guidelines published by JRAIA (JRA-GL02-1994) to check the water quality of the water in the heat source
unit regularly.
A cooling tower and heat source water circuit should be a closed circuit that water is not exposed to the atmosphere.
When a tank is installed to ensure that the circuit has enough water, minimize the contact with outside air so that the
oxygen from being dissolved in the water should be 1 mg/L or less.
5-4-3. Unit characteristics
When the Thermo ON and OFF is frequently repeated on the indoor unit, the operation status of outdoor units may be-
come unstable.
5-4-4. Relevant equipment
Provide grounding in accordance with the local regulations.
5-5. Precautions for Control-related items
5-5-1. Product specification
To introduce the MELANS system, a consultation with us is required in advance. Especially to introduce the electricity
charge apportioning function or energy-save function, further detailed consultation is required. Consult your local
distributor for details.
Billing calculation for AE-200E/AE-50E/EW-50E/AG-150A/EB-50GU-J/TG-2000A, or the billing calculation unit is
unique and based on our original method. (Backup operation is included.) It is not based on the metering method, and
do not use it for official business purposes. It is not the method that the amount of electric power consumption (input) by
air conditioner is calculated. Note that the electric power consumption by air conditioner is apportioned by using the ratio
corresponding to the operation status (output) for each air conditioner (indoor unit) in this method.
In the apportioned billing function for AE-200E/AE-50E/EW-50E/AG-150A and EB-50GU-J, use separate watthour me-
ters for A-control units, K-control units, and packaged air conditioner for City Multi air conditioners. It is recommended
to use an individual watthour meter for the large-capacity indoor unit (with two or more addresses).
When using the peak cut function on the AE-200E/AE-50E/EW-50E/AG-150A or EB-50GU-J, note that the control is
performed once every minute and it takes time to obtain the effect of the control. Take appropriate measures such as
lowering the criterion value. Power consumption may exceed the limits if AE-200E/AE-50E/EW-50E/AG-150A or EB-
50GU-J malfunctions or stops. Provide a back-up remedy as necessary.
The controllers cannot operate while the indoor unit is OFF. (No error)
Turn ON the power to the indoor unit when operating the controllers.
When using the interlocked control function on the AE-200E/AE-50E/EW-50E/AG-150A/EB-50GU-J/PAC-YG66DCA or
PAC-YG63MCA, do not use it for the control for the fire prevention or security. (This function should never be used in
the way that would put people's lives at risk.) Provide any methods or circuit that allow ON/OFF operation using an
external switch in case of failure.
5-5-2. Installation environment
The surge protection for the transmission line may be required in areas where lightning strikes frequently occur.
A receiver for a wireless remote controller may not work properly due to the effect of general lighting. Leave a space of
at least 1 m between the general lighting and receiver.
When the Auto-elevating panel is used and the operation is made by using a wired remote controller, install the wired
remote controller to the place where all air conditioners controlled (at least the bottom part of them) can be seen from
the wired remote controller. If not, the descending panel may cause damage or injury, and be sure to use a wireless
remote controller designed for use with elevating panel (sold separately).
Install the wired remote controller (switch box) to the place where the following conditions are met.
Where installation surface is flat
Where the remote controller can detect an accurate room temperature
The temperature sensors that detect a room temperature are installed both on the remote controller and indoor unit.
When a room temperature is detected using the sensor on the remote controller, the main remote controller is used
to detect a room temperature. In this case, follow the instructions below.
Install the controller in a place where it is not subject to the heat source.
(If the remote controller faces direct sunlight or supply air flow direction, the remote controller cannot detect an ac-
curate room temperature.)
Install the controller in a place where an average room temperature can be detected.
Install the controller in a place where no other wires are present around the temperature sensor.
(If other wires are present, the remote controller cannot detect an accurate room temperature.)
To prevent unauthorized access, always use a security device such as a VPN router when connecting
AE-200E/AE-50E/EW-50E/AG-150A/EB-50GU-J or TG-2000A to the Internet.
