Hanging The Unit Body - Mitsubishi Electric Fresh Master GUF-50RDH4 Installation Instructions Manual

5.2. Attaching the duct connecting
Fresh Master.
Caution:
inside the main unit.
tighten them.

5.3. Hanging the unit body

2. Tighten up securely using double nuts in order to prevent loose-
ness.
Caution:
- When suspending the main unit from the ceiling, do not
handle it in such a way that force will be applied to the con-
trol box.
Fresh Master
GUF-100RDH4 GUF-50RDH4
GUF-100RD4 GUF-50RD4
Nut Washer
5.4. When changing the direction of
2. Remove the screws at the top mounting position.
mounting positions.
4. Tighten up the screws in the screw hole where the ceiling suspen-
Flange cover
Mounting screw
-
Screw
Screw
1. Use the mounting screws provided to mount the duct connection
2. Use the four mounting screws that were removed to attach the
5.5. Connecting the ducts
-
vent air leaks.
2. Suspend the ducts from the ceiling so that their weight will not be
applied to the Fresh Master.
3. The exhaust/outdoor and supply ducts must be covered with heat-
insulating material in order to prevent condensation from forming.
Heat-insulating material
Exhaust/outdoor/supply ducts
Caution:
- The main unit is equipped with connection locations for equi-
potential connection of ducts.
- Down ward gradient of outdoor duct: 1/30 or more (toward
wall side)
Model
GUF-100RDH4
- Before connecting the ducts, check that no sawdust or any
its way inside the ducts.
- Do not touch the damper plate inside the main unit when con-
necting the ducts.
- Do not install the ducts in the ways illustrated below. Do-
sounds.
- Extremely
sharp bends
- Multiple bends
Duct
Taping
Aluminium tape
Main unit
Distance
1 m or more
4 2.5 m or more
- Bends right next
to the outlet
- Extreme reduction in
the diameter of the
connected ducts
-
7