Munters HCUw, Эксплуатация и техническое обслуживание

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3
3 INSTALLATION
3.1 LIFTING AND INSPECTION
1. Unit must be lifted by crane using
all
4 lifting points located on the sides of the unit. The crane must
be selected to handle the weight shown on the General Arrangement drawing. Spreader bars that are
2” to 4” wider than the unit width must be used to prevent the rigging cables from squeezing the top of
the unit. Failure to do so will damage the unit.
2. When the unit arrives, check it immediately for signs of shipping damage. If you do notice any
damage, report it to the shipping company and to Munters right away.
3. The control enclosure is mounted behind a door on the side of the unit. The electrical controls are
located directly behind the control panel door. The door is secured with a bolt and locking nut to
prevent unauthorized access. This bolt and nut should be replaced after installation or servicing or
may be replaced with a padlock.
•
Check for any signs of damage.
• Check the tightness of all electrical connections. Carefully check the power wiring terminals.
• Be sure all control relays are firmly seated in their sockets.
3.2 POSITIONING THE UNIT
1. The HCU must be installed and operated outdoors. The unit is mounted on a roof curb where bottom
discharge and/or return is featured. The curb should be installed level. The curb must have a
neoprene gasket ½” thick x 1 ½” wide installed completely around the perimeter prior to setting the
unit in place.
CAUTION:
Failure to install the roof curb gasket may result in rain water leaks.
2. Allow clearances around the unit on all sides for maintenance access.
3. The unit should have free access to outdoor air.
3.3 INSTALLING THE HOODS
1. Air intake hoods must be installed over the condenser coils and on the outside air inlet on the side of
the unit opposite the condenser coil. There are 12 condenser coil hoods (40” wide) and 4 makeup air
inlet hoods (30 ½” wide).
2. Condenser coil hoods (40” wide)
a. Remove any shipping covers or materials from the face of the condenser coil. Remove coil
support screws on the left side of the condenser coil. Place the first hood in the upper left hand
corner so that the pre-punched holes in the hood line up with the pre-punched holes on the
condenser coil flanges on the left side. Install 6 sheet metal screws (furnished).
b. Place the next hood directly below the first hood. The top of the second hood should be butted
against the bottom of the first hood and the pre-punched holes should line up. Install 6 sheet
metal screws. The third and fourth hoods are installed likewise. The top hood shall have an
additional 5 screws installed in the pre-punched holes along the top flange.
c. Install the remainder of the hoods in the same fashion.
3. Makeup air inlet hoods (30 ½” wide)
a. Place the first hood at the top of the makeup air inlet louver (the inlet louver has vertical aluminum
fins about ¾” apart). The flanges should sit on the face of the inlet louver frame. The top of the
hood is aligned with the top of the inlet louver frame. Install 3 screws on each side and 4 screws
along the top of the top hood through the pre-punched holes.
b. Place the second hood directly below the top hood and attach with 3 screws on each side.