ClimateMaster LCU Series Installation, Operation & Maintenance Instructions Manual Download Page 4

Page 4

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Figure 1 - LCU  Installation

Location and Access

Large Commercial Units are typically installed in a floor
level closet or in a small mechanical room. Refer to
Figure 1 for an illustration of a typical installation. Install
units with adequate clearance to allow maintenance and
servicing. Conform to the following guidelines when
selecting unit location:

1.

Provide adequate clearance for filter replacement
and drain pan cleaning. DO NOT block filter access
with piping, conduit or other materials. Refer to
submittal drawing for Vertical Unit Dimensions.

INSTALLATION

Installation of Supply and Return Piping

Follow these piping guidelines:

Piping must comply with ALL applicable Codes.

1.

Install a drain valve at the base of each supply and
return riser to facilitate system flushing.

2.

Install shut-off/balancing valves and unions at each
unit to permit unit removal for servicing.

2.

Provide access for fan and fan motor maintenance
and for servicing of the compressor and coils without
removal of the unit.

3.

Provide an unobstructed path to the unit within the
closet or mechanical room to enable removal of the
unit if necessary.

4.

Provide access to water valves and fittings, and
screwdriver access to the unit side panels, discharge
collar and all electrical connections

The installation of Large Commercial Water Source
Heat Pump Units and all associated components, parts
and accessories that make up the installation shall be in
accordance with the regulations of ALL Authorities
having jurisdiction and MUST conform to ALL
applicable Codes. It is the responsibility of the Installing
Contractor to determine and comply with ALL
applicable Codes and Regulations.

T

Optional Discharge

Supply Air

Optional Discharge

Access
Panel

Access
Panel

Access
Panel

Access
Panel

Vibration
Pad

Control Box

Supply Air

Supply Water

Return
Water

Balancing
Valve

Valves

Trap

Condensate

24 V Remote
Mtd. Stat

Power
Supply

Disconnect
Switch or
Per Local Codes

Condensate

Water In

Water Out

Unions

Rear Return Front Blow shown

Refer to Product Engineering Catalog
for other arrangements & dimensions

CAUTION

Summary of Contents for LCU Series

Page 1: ...Installation Operation Maintenance Instructions Large Commercial Series Water Source Heat Pumps LCU Series...

Page 2: ...Installation 3 Location and Access 4 Installation 4 Installation of Supply and Return Piping 4 Condensate Piping 5 Sound Attenuation for Large Commercial Units 6 Electrical Wiring 6 Wall Mounted Therm...

Page 3: ...after it is removed Inspection Upon receipt of shipment at the job site carefully check the shipment against the bill of lading Make sure all units have been received Inspect the carton or crating of...

Page 4: ...vicing of the compressor and coils without removal of the unit 3 Provide an unobstructed path to the unit within the closet or mechanical room to enable removal of the unit if necessary 4 Provide acce...

Page 5: ...to avoid condensate pan overflow at initial start up DO NOT bend or kink supply lines or hoses Optional pressure rated hose assemblies designed specifically for use with ClimateMaster units are availa...

Page 6: ...hock open the power supply disconnect switch and secure it in an open position during installation Use only copper conductors for field installed electrical wiring Unit terminals are not designed to a...

Page 7: ...nt of 40 F with entering air at 40 F entering water at 40 F and with both air and water at the stated flow rates of ARI Standard 320 96 rating test for initial winter start up Notes 1 These are not no...

Page 8: ...e to equal the rate of bleed 7 Refill the system and add trisodium phosphate in a proportion of approximately one pound per 150 gallons of water Reset the boiler to raise the loop temperature to about...

Page 9: ...ystem Water Temperature Ensure that it is within an acceptable range to facilitate start up When conducting this check also verify proper heating and cooling set points 3 System Water pH Verify system...

Page 10: ...e imme diately after checking cooling cycle operation A time delay will prevent the compressor from re starting for approximately 5 minutes NOTE Large Commercial heat pump units are UNIT START UP WARN...

Page 11: ...ore than 10 of the values noted on the unit nameplate Maintain a log of amperage values to detect deterioration prior to compo nent failure When replacing the compressor contactor or lockout relay in...

Page 12: ...d source the air coil Grounding the condensate overflow signal from the controller causes a fault after 30 continuous seconds Over Under Voltage When the controller senses a voltage over 30Vac or unde...

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