General Information; Specific Features; How To Read The Model Name - Mitsubishi Heavy Industries SRK25GZ-L1 Handbook

8.1

GENERAL INFORMATION

8.1.1 Specific features

(1) Less refrigerant charge amount due to use of double phase refrigerant flow system. The total refrigerant charge amount has been
reduced by more than 50%.
(2) The indoor outdoor interconnection signal wiring has been done away with. The microcomputer chip is installed in the indoor unit.
There is no need for the unit to communicate between the outdoor and indoor units so the unit is more resistant to electromagnetic
noise thus the incidence of microcomputer malfunction has been reduced. The compressor in the outdoor unit has its own self
protection function, that reacts according to abnormal high pressure and excessive high temperature.
(3) There are only five power lines between the outdoor and indoor unit. As no signal wire is used there is no need to separate the
power line from the signal line. One cab tyre cable with 6 wires encased in one sheath is enough for conducting the wiring work
between the outdoor unit and the indoor unit. This contributes to simpler wiring work in the field.
(4) All air supply ports have auto swing louvers. The indoor fan motor has two speeds of high and low.
(5) All models have service valves protruding from the outdoor unit for faster flare connection work in the field.
(6) Low sound level
Operating noise has been remarkably reduced due to adoption of the crescent turbo fan which cuts off wind-blowing noise and also
console type of cabinet which is highly effective to protect vibration.
(7) 700mm high drain head
Adoption of drain pump with high drain head and high capacity (600cc/min) has made it possible to have maximum 700 mm(from
below ceiling drain head.[In case 700mm drain head is required, set it up close to the unit. It is impossible to do piping on down
slope.]

8.1.2 How to read the model name

Example: FDTN P 20 8 H EN-S
Applicable power source ... See the specifications
Heat pump type
Series No.
Norminal capacity
P : R407C model
: R22 model
(blank)
Model name
FDT ( N ) -H
FDTN(P): Ceiling recessed type unit with
wireless remote controller
FDT: Ceiling recessed type unit with
wired remote controller
FDC: Outdoor unit
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