Mitsubishi Electric PURY-WP-YJM-A Data Book page 219

6. Installation information
6-4-3. Unit characteristics
ŒWhen the Thermo ON and OFF is frequently repeated on the indoor unit, the operation status of outdoor units may be-
come unstable.
6-4-4. Relevant equipment
ŒProvide grounding in accordance with the local regulations.
6-5. Precautions for Control-related items
6-5-1. Product specification
ŒTo 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 distrib-
utor for details.
ŒBilling calculation for AG-150A, GB-50ADA, 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.
ŒIn the apportioned billing function for AG-150A and GB-50ADA, use separate watthour meters 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).
ŒWhen using the peak cut function on the AG-150A or GB-50ADA, 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. Pow-
er consumption may exceed the limits if AG-150A or GB-50ADA malfunctions or stops. Provide a back-up remedy as
necessary.
ŒThe controllers cannot operate while the indoor unit is OFF. (No error)
Turn ON the power to the indoor unit when operating the controllers.
ŒWhen using the interlocked control function on the AG-150A, GB-50ADA, 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.
6-5-2. Installation environment
ŒThe surge protection for the transmission line may be required in areas where lightning strikes frequently occur.
ŒA 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.
ŒWhen 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).
ŒInstall the wired remote controller (switch box) to the place where the following conditions are met.
ŒWhere installation surface is flat
ŒWhere 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.
ΠInstall 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 accurate room temperature.)
ΠInstall the controller in a place where an average room temperature can be detected.
ΠInstall 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.)
ŒTo prevent unauthorized access, always use a security device such as a VPN router when connecting
AG-150A, GB-50ADA, or TG-2000A to the Internet.
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