Daikin FDMQ-R Series User Manual

FTX-N/U, FVXS-N, FDMQ-R Series EDUS091558E
173
3P379970-10C
8
6. Relling refrigerant
Check the type of refrigerant to be used on the machine nameplate.
Precautions when adding R410A
Fill from the liquid pipe in liquid form.
R410A is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal
operation.
1) Beforelling,checkwhetherthecylinderhasasiphonattachedornot.(Itshouldhavesomethinglike“liquidllingsiphon
attached” displayed on it.)
Filling a cylinder with an attached siphon
Standthecylinderuprightwhenlling.
There is a siphon pipe inside, so the cylinder
neednotbeupside-downtollwithliquid.
Filling other cylinders
Turn the cylinder
upside-downwhenlling.
• Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.
7. Refrigerant piping work
7-1. Cautions on pipe handling
• Protect the open end of the pipe from dust and moisture.
• All pipe bends should be as gentle as possible. Use a pipe bender for
bending.
7-2. Selection of copper and heat insulation materials
Whenusingcommercialcopperpipesandttings,observethefollowing:
• Insulation material: Polyethylene foam
Heattransferrate:0.041to0.052W/mK(0.024to0.030Btu/fth°F(0.035
to0.045kcal/mh°C))
Be sure to use insulation that is designed for use with HVAC Systems.
• ACR Copper only.
• Be sure to insulate both the gas and liquid piping and observe the
insulation dimensions as below.
Wall
Ifnoflarecapis
available,cover
theflaremouth
withtapetokeep
dirtandwaterout.
Besureto
placeacap.
Rain
Gas side
Piping size
O.D. 3/8 inch
(9.5mm)
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
O.D. 1/4 inch
(6.4mm)
1-3/16 inch (30mm)
or more
1-9/16 inch (40mm)
or more
1-15/16 inch (50mm)
or more
1-3/16 inch (30mm)
or more
0.031 inch (0.8mm)
(C1220T-O)
0.039 inch (1.0mm)
(C1220T-O)
0.031 inch (0.8mm)
(C1220T-O)
I.D. 15/32-19/32 inch
(12-15mm)
I.D. 9/16-5/8 inch
(14-16mm)
I.D. 5/8-13/16 inch
(16-20mm)
I.D. 5/16-13/32 inch
(8-10mm)
13/32 inch
(10mm) Min.
Minimum bend radius Piping thickness Thermal insulation size
Thermal insulation
thickness
Liquid side
• Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
Gas pipe
Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape
Drain hose
Inter-unit wire
01_EN_3P379970-10C.indd 8 10/18/2019 9:18:00 AM

Daikin FDMQ-R Series Specifications

General

Brand	Daikin
Model	FDMQ-R Series
Category	Air Conditioner
Language	English