LGRED Installation Manual

29
Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
WITH
Branch Distribution Unit Orientation
Multi F MAX with LGRED branch distribution (BD) units can be installed in a multitude of options to fit
various building configurations and job or application requirements (suspended from the ceiling or mount-
ed on the wall). The installation location of the PCB within the branch distribution unit can be changed for
easier service access, depending on the branch distribution unit installation itself (see the wiring section
for information). Branch distribution units include electronic expansion valves that properly seat only if
the branch distribution unit is installed in an acceptable orientation. Installations with improper branch
distribution unit orientation risk incomplete valve seating and system performance degradation from
potential refrigerant leakage through the electronic expansion valve.
This material is for informational
or educational purposes only. It is
not intended to be a substitute for
professional advice. Consult with
your engineer or design profes-
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your system.
Figure 16: Acceptable Branch Distribution Unit Ceiling Mount Orientations.
Left Side View,
Port End Facing Left
Ceiling Mounting Options
Port End View
Right Side View,
Port End Facing Right
Ceiling Ceiling
Ceiling
Top of Unit
Refrigerant Piping End View
Ceiling
Top of Unit
Top of Unit
Top of Unit
Top of Unit
Into the Ceiling
Into the Unit
Into the Ceiling
Into the Unit
Into the Unit
Into the Ceiling
Isometric View
Ceiling Mount Installation - Hangers with
Hanging Bolt
1. Drill four (4) holes in the ceiling, following the dimensions on the previous pages.
2. Attach the factory-supplied hangers with two (2) screws each at the designated four
(4) areas on the frame of the branch distribution unit.
3. Install an anchor in the ceiling, and attach the hanging bolts to the ceiling.
4. Add nuts and washers to the hanging bolt as shown at right.
5. Hang the branch distribution unit on the hanging bolts (ceiling side up), and after
checking for level (±5 degrees), securely tighten all nuts.
BD unit
Nu t
(M10 or M8
Nut
(M10 or M8)
Flat washerFlat washer
Hanging bol tHanging bolt
(M10 or M8)
Figure 17: Branch Distribution Ceiling Mount
Installation.
If a screw has been installed on the frame of the branch distribution unit and the screw has been removed, to prevent condensation, either re-install
the screw or cover the open hole with aluminum tape.
Ceiling Mount Installation - Hangers Only
1. Attach the factory-supplied hangers with two (2) screws each at the designated four
(4) areas on the frame of the branch distribution unit.
2. Install the branch distribution unit to the ceiling using two screws on each of the
hangers as shown below. Unit must be ±5 degrees of level.
3. Cover parts of the hanger holes with polyethylene foam insulation (to prevent con-
densation).
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THE BRANCH DISTRIBUTION UNITS