Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 177

Drain pipe
6
Caution
Insert the attached drain hose to the indoor unit completely, tighten the drain hose with the attached
clamp and secure it well.(Disapprove of the adhesive joint)
Clamp
(Provided on
the drain hose)
Drain hose
Drain socket
(Accessory)
l Install the drain pipe according to the installation manual in order to drain properly.
Imperfection in draining may cause flood indoors and wetting the household goods etc.
l Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful and
inflammable gas is generated. Toxic gas would flow into the room and it would cause serious
damage to user's health and safety (some poisoning or deficiency of oxygen). In addition, it may
cause corrosion of heat exchanger and bad smell.
l Connect the pipe securely to avoid water leakage from the joint.
l Insulate the pipe properly to avoid condensation drop.
l Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of
the drain pipe after installation.
l Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/
or trap in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained
out properly from the pipe during commissioning. Also, keep sufficient space for inspection and
maintenance.
l Insert the attached drain hose completely to the base.
l Tighten the drain hose with the strap and secure it well.
Indoor
unit
Descending angle
Drain test
l After installation of drain pipe, make sure that drain system work in good condition and no water
leakage from joint and drain pan.
l Do drain test even if installation of heating season.
Wiring-out position and wiring connection
7
l Electrical installation work must be performed according to the installation manual by an electrical
installation service provider qualified by a power provider of the country, and be executed according
to the technical standards and other regulations applicable to electrical installation in the country.
Be sure to use an exclusive circuit.
l Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in order not
to apply unexpected stress on the terminal.
l Do not put both power source line and signal line on the same route. It may cause
miscommunication and malfunction.
l Be sure to do D type earth work.
l For the details of electrical wiring work, see attached instruction manual for electrical wiring work.
1. Remove a lid of the control box (2 screws).
2. Hold each wiring inside the unit and fasten them to terminal block securely.
3. Fix the wiring with clamps.
4. Install the removed parts back to original place.
Power source side terminal block
L N
Indoor power source line
Earth
Remote controller line
Signal line (Shielded cord)
Socket
(Provided on
the drain hose)
VP-20
(Prepare on site)
No bumps
No traps
Not to be in water
CNA CND CNK2 CNK1 CNB CNW2
Earth (Signal line)
Signal side terminal block
Check list after installation
8
●Check the following items after all installation work completed.
Check if;
The indoor and outdoor units are fixed securely?
Inspection for leakage is done?
Insulation work is properly done?
Water is drained properly?
Supply voltage is same as mentioned in the model name plate?
There is mis-wiring or mis-connection of piping?
Earth wiring is connected properly?
Cable size comply with specified size?
Any obstacle blocks airflow on air inlet and outlet?
174
- -
Expected trouble Check
Falling, vibration, noise
Insufficient capacity
Water leakage
Water leakage
PCB burnt out, not working at all
PCB burnt out, not working at all
Electric shock
PCB burnt out, not working at all
Insufficient capacity
PGD012D006
PGD012D006