Daikin ERQ Service Manual page 87

V
ALVE KIT INSTALLATION
Mechanical installation
1 Remove the valve kit box cover by unscrewing 4x M5.
2 Drill 4 holes on correct position (measurements as indicated in
figure below) and fix the valve kit box securely with 4 screws
through the provided holes Ø9 mm.
■
Make sure that the expansion valve is installed
NOTE
vertically.
■
Make sure there is enough free space for future
maintenance.
Brazing work
For details, see manual of the outdoor unit.
3 Prepare the inlet/outlet field piping just in front of the connection
(do not braze yet).
192.5 mm
C
B
A Inlet coming from the outdoor unit
B Outlet to air handling unit
C Pipe fixing clamp
4 Remove the pipe fixing clamp (C) by unscrewing 2x M5.
5 Remove the upper and lower pipe insulations.
6 Braze the field piping.
■
Make sure to cool the filters and valve body with
a wet cloth and make sure the body temperature
does not exceed 120°C during brazing.
■ Make sure that the other parts such as electrical
box, tie wraps and wires are protected from direct
brazing flames during brazing.
7 After brazing, put the lower pipe insulation back in place and
close it with the upper insulation cover (after pealing off the
liner).
8 Secure the pipe fixing clamp (C) in place again (2x M5).
9 Make sure that field pipes are fully insulated.
Field pipe insulation must reach up to the insulation you have
put back in place as per procedure step 7. Make sure that there
is no gap between both ends in order to avoid condensation
dripping (finish the connection with tape eventually).
EKEQMCBV3
Option kit for combination of Daikin condensing units
with field supplied air handling units
4PW52447-1
A
Electrical work
1 Open the electrical box cover (A).
2 Push out ONLY the second lower wire intake hole (B) from
inside to outside. Do not damage the membrane.
3 Pass valve cable (with wires Y1 ... Y6) from the control box
through that membrane wire intake hole and connect the cable
wires into the terminal connector (C) following instructions as
described in step 4. Route the cable out of the valve kit box
according to figure below and fix with the tie wrap (D). See
"Electric wiring work" on page 78 for more details.
D
4 Use a small screwdriver and follow indicated instructions for
connecting cable wires into the terminal connector according to
the wiring diagram.
5 Make sure that field wiring and insulation is not squeezed when
closing the valve kit box cover.
6 Close the valve kit box cover (4x M5).
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A C
B
Installation and operation manual
77