Daikin LRMEQ3BY1, Installation And Operation Manual

9 Technical data

Installation and operation manual

26

4BY1

Air-cooled refrigeration condensing unit

4P495373-1 – 2017.07

9

Technical data

A 

subset

  of  the  latest  technical  data  is  available  on  the  regional  Daikin  website  (publicly  accessible).  The 

full  set

  of  latest  technical  data  is

available on the Daikin extranet (authentication required).

9.1

Service space: Outdoor unit

When mounting units side by side, the piping route must be to the front, to the back or downwards. In this case the piping route to the side is
not possible.
When mounting the units side by side and routing the piping to the back, you must keep a distance of ≥250 mm between the units (instead of
≥100 mm as shown on the figures below).

Single unit (

) | Single row of units (

)

See figure 1 on the inside of the front cover.

A,B,C,D

Obstacles (walls/baffle plates)

E

Obstacle (roof)

a,b,c,d,e

Minimum service space between the unit and obstacles A, B, C, D and E

e

B

Maximum distance between the unit and the edge of obstacle E, in the direction of obstacle B

e

D

Maximum distance between the unit and the edge of obstacle E, in the direction of obstacle D

H

U

Height of the unit

H

B

,H

D

Height of obstacles B and D

1

Seal the bottom of the installation frame to prevent discharged air from flowing back to the suction side through the bottom of the unit.

2

Maximum two units can be installed.
Not allowed

Multiple rows of units (

)

See figure 2 on the inside of the front cover.

Stacked units (max. 2 levels) (

)

See figure 3 on the inside of the front cover.

A1=>A2

(A1) If there is danger of drainage dripping and freezing between the upper and lower units…
(A2) Then install a 

roof

 between the upper and lower units. Install the upper unit high enough above the lower unit to prevent ice buildup at the

upper unit's bottom plate.

B1=>B2

(B1) If there is no danger of drainage dripping and freezing between the upper and lower units…
(B2) Then it is not required to install a roof, but 

seal the gap

 between the upper and lower units to prevent discharged air from flowing back to the

suction side through the bottom of the unit.

9.2

Piping diagram: Outdoor unit

R4T

R1T

R2T

R6T

R3T

Y1E

S1NPL

S1PH

R5T

S1NPH

M1C

M

a

c

d

b

c

d

n

c

k

l

e

j

f

i

m

h

g

f

a

Stop valve (gas)

b

Stop valve (liquid)

c

Filter

d

Service port

e

Check valve

f

Maintenance stop valve

g

Liquid receiver

h

Heat exchanger

i

Oil separator

j

Distributor