McQuay THC02 Installation Manual

Installation & Maintenance Manual IM 745-2

Ceiling Concealed Fan-Coil Unit

Models: THC02, THC03, THC04, THC06, THC08, THC10, THC12

Group: Fan-coil

Part Number: 106572801

Date: June 2003

Table of Contents

Installation ............................................................. 3

Receiving ............................................................... 3

Air duct connection ............................................... 4

Drain pipe connection............................................ 4

Pipe connection ..................................................... 4

Wiring .................................................................... 4

Maintenance........................................................... 4

General................................................................... 4

Monthly intervals................................................... 4

Dimensional Data .................................................. 5

CAUTION

Sharp edges and coil surfaces are injury hazards. Avoid contact with them.

Suggested Drain Trapping ..................................... 6

Wiring Diagrams ................................................ 6-7

Motor ............................................................... 6

Control ............................................................. 7

Limited Warranty

Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.

WARNING

Moving machinery and electrical power hazards may cause severe personal injury or death. Disconnect and lock off power before servicing equipment.

NOTICE

Installation and maintenance are to be performed only by qualified personnel who are familiar with and in compliance with state, local and national codes and regulations, and experienced with this type of equipment.

Installation

Discharge Air

Return Air

Ceiling

Ceiling Access Panel with Air Return

Terminal Block

Fan Coil Unit

Flat Washer

Hanging Rod

Expansion Screw

Nut

Detail A

Vibration Isolator (by others)

Receiving

All units leaving the McQuay plant are inspected for quality prior to shipment.

Carefully inspect all shipments immediately upon delivery. Note visible damage on the carrier’s freight bill and request that the carrier send a representative to inspect the damage. This may be completed by telephone or in person, but should always be confirmed in writing.

The shipment should be unpacked in the presence of the agent so that the extent of the damage or loss can be determined. The carrier’s agent will make an inspection report and a copy will be given to the consignee for forwarding to the carrier with a formal claim.

Unit Installation

The unit is designed to be concealed in the ceiling. Installation and maintenance should be performed by qualified personnel who are familiar with local codes and regulations, and experienced with this type of equipment.

There are holes on the top of the unit for hanging the unit above the ceiling. Please refer to Figure 1. , Figure 2., and Figure 3.

NOTE: Vibration isolaters provided by others.

NOTICE

Make sure the top of the unit is level after installation. The drain pan is designed with a little gradient to facilitate drainage. Do Not Level Drain Pan!

NOTICE

Before installation and running the unit, please check the following:

1. There must be enough space for the unit installation and maintenance. Please refer to the unit outline and dimensions in Figure 1 for the minimum distance between the unit and obstacles.

2. Mount with the lowest moving parts at least 8 feet above the floor or grade level.

3. Ensure enough space for piping connection and electrical wiring.

4. Leave a means for disconnection from the electrical supply according to NEC or local codes.

5. Check whether the hanging rods can support the weight of the unit.

6. The unit must be installed horizontally for proper operation and condensate draining.

7. The external static pressure must be within the allowable static pressure range.

8. The installing contractor must supply service valves and insulation for water piping in accordance with local codes and regulations.

Figure 1.

Figure 2.

Obstacle

Ceiling

Obstacle

A=8 in. B= 16 in. C=16 in.

9. To prevent strain on the wire connections, use either conduit or approved strain relief device.

10. Confirm that the power has been switched OFF before installing or servicing the unit.

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