Carrier 30MPA Place the Unit, Mounting Hole Weight Distribution, Mobility Kit

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a30-5040

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CONTROL PANEL SIDE

WEIGHT DISTRIBUTION AT EACH MOUNTING

HOLE — Lb (kg)

UNIT 30MP		MOUNTING HOLE
	A	B	C	D
A015		156	(71)
A020		159	(72)
A030		181	(82)
A040		228 (104)
A045		234 (106)
W015		170	(77)
W020		176	(80)
W030		216	(98)
W040		275 (125)
W045		298 (135)

Fig. 6 — Mounting Hole Weight Distribution

a30-5041

Fig. 7 — Mobility Kit

Step 3 — Place the Unit

NOTE: These units are not suitable for unprotected outdoor use.

Carrier recommends that these units be located in the base- ment or on the ground floor. However, if it is necessary to lo- cate the unit on an upper floor, be sure the structure has been designed to support the unit weight. If necessary, add structural support to floor. Also, be sure the surface for installation is level. Refer to Fig. 4 and 5 for space requirements and weight distribution.

Only electrical power connections, water connections for condenser, fluid connections for evaporator, and strainer instal- lation are required for 30MPW installation. Installation of

30MPA units varies only in field piping required for the remote condenser.

When the unit is in its final position, remove the packaging and remove the mobility kit wheels (if equipped). Remove 3/8-in. wheel nuts to remove wheels from unit legs. Level the unit (using a level), and bolt the unit to the floor or pad.

If unit is to be mounted on unit external vibration isolators, follow the mounting instructions included with the accessory vibration isolator.

If unit has accessory leveling kit installed, follow the in- structions provided with the accessory to make sure unit is lev- el and in the correct position.

Step 4 — Check Compressor Mounting — As shipped, units with two compressors are held down with 6 bolts through rubber grommets. All units with three compresors are held down with 8 bolts per pair through grommets. After unit is installed, verify mounting bolt torque 7 to10 ft-lb (9 to 14 Nm).

Step 5 — Make Piping Connections — See Fig. 8 and 9 for typical piping applications.

30MPA SYSTEM CONDENSER — For detailed condenser piping installation instructions for 30MPA systems, refer to separate instructions packaged with the remote condenser units.

Condenser refrigerant piping for 30MPA units should be sized to minimize the amount of refrigerant required.

The 30MPA units that use air-cooled evaporative condens- ers must have adequate means for head pressure control when operating below 60 F (15.6 C).

Carrier recommends that a field-supplied pressure relief de- vice be installed in each discharge line of 30MPA units. Most local codes require the discharge line relief valve to be vented directly to the outdoors. The vent must not be smaller than the discharge line relief valve outlet.

30MPW CONDENSER DESCRIPTION — All 30MPW units use a brazed-plate heat-exchanger-type condenser. These heat exchangers are made of embossed plates of acid-resistant stainless steel. Every other plate is reversed so that the ridges of the herringbone pattern intersect one another on adjacent plates, forming a lattice of contact points. These plates are vacuum-brazed together to form a compact and pressure- resistant heat exchanger.

After brazing, the impressions in the plates form 2 separate systems of channels where the refrigerant and water flows are counterflow. The number of plates varies depending on unit tonnage. The condensers provide approximately 10º to 12º F (6º to 8º C) liquid subcooling at the standard Air Conditioning, Heating and Refrigeration Institute (AHRI) rating condition.

30MPW CONDENSER — When facing the unit control box, the condenser is the uninsulated heat exchanger located on the left-hand side. The water connections are on the right-hand side of the heat exchanger with the LIQUID-IN connection at the bottom, and the LIQUID-OUT connection at the top.

A strainer with a minimum of 40 mesh must be installed within 10 ft (3 m) of the condenser water inlet to prevent debris from clogging or damaging the heat exchanger. The strainer is required for operation and is available as an accessory.

To install the victaulic coupling (see Fig. 10):

1.Lubricate the gasket lips and stretch the gasket over the end of the heat exchanger coupling. Avoid twisting the gasket when installing.

2.Bring the pipe and heat exchanger coupling ends together into alignment. Slide the gasket so that it is centered over the ends. Apply a light film of lubricant to the gasket, or to the outside diameter of the pipe. Avoid twisting the gasket during installation.

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