Johnson Controls L-Series Bedienungsanleitung

FORM 145.05-EG2 (618)

ENGINEERING GUIDE

Water-Cooled

Self-Contained Units

L-Series, Vertical

FORM 145.05-EG2 (618)

2JOHNSON CONTROLS

Nomenclature

EVAPORATOR COIL

SE = Standard Efficiency

HE = High Efficiency

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

L S W U 0 9 5 S E A 4 6 S P D 4 0 O H 3 6 P 2 V V C O 0 0 0 S

UNIT TYPE

L = “L” Series

S = Self-Contained

W = Water-Cooled

U/D = Upflow/Downflow

NOMINAL

CAPACITY

025 = 25 Ton

032 = 32 Ton

035 = 35 Ton

040 = 40 Ton

050 = 50 Ton

060 = 60 Ton

062 = 62 Ton

070 = 70 Ton

080 = 80 Ton

095 = 95 Ton

105 = 105 Ton

DESIGN SEQUENCE

A = Initial Design

SUPPLY VOLTAGE

17 = 208V-3-6-0

28 = 230V-3-6-0

46 = 460V-3-6-0

58 = 575V-3-6-0

POWER SUPPLY CONNECTION

SPT = Single Point Terminal Block

SPD = Single Point Disconnect Switch

DPT = Dual Point Terminal Block

DPD = Dual Point Disconnect Switch

ELECTRIC

HEAT SIZE

000 = No EH

017 = 17.5 KW

035 = 35 KW

052 = 52.5 KW

070 = 70 KW

105 = 105 KW

HEAT OPTION

CO = Cooling Only

HW = Hot Water

EH = Electric Heat

VFD OPTION

CV = Constant Volume

VV = Variable Air Volume

(VAV)

VB = VAV with Bypass

ENTERING WATER

TEMPERATURE

S = Standard Temperature

H - High Temperature

FAN CLASS

P2 = CL2, Plenum

P3 = CL3, Plenum

FAN SIZE

25 = 25 inch

28 = 28 inch

32 = 32 inch

36 = 36 inch

40 = 40 inch

SUPPLY MOTOR TYPE

OP = ODP Premium Eff.

TP = TEFC Premium Eff.

SUPPLY

MOTOR HP

05 = 5 HP

07 = 7.5 HP

10 = 10 HP

15 = 15 HP

20 = 20 HP

25 = 25 HP

30 = 30 HP

40 = 40 HP

50 = 50 HP

60 = 60 HP

FORM 145.05-EG2 (618)

JOHNSON CONTROLS 3

Table of Contents

FEATURES AND BENEFITS ....................................................................................................................................5

FEATURES AND OPTIONS.................................................................................................................................... 11

SELECTION PROCEDURE....................................................................................................................................15

OPERATING LIMITATIONS....................................................................................................................................18

PHYSICAL DATA ....................................................................................................................................................19

COOLING PERFORMANCE DATA ........................................................................................................................22

DIMENSIONAL DATA .............................................................................................................................................33

AIR PRESSURE DROPS........................................................................................................................................57

SUPPLY FAN DATA................................................................................................................................................63

WATER PRESSURE DROP....................................................................................................................................65

ELECTRICAL DATA ...............................................................................................................................................68

OPERATING WEIGHTS..........................................................................................................................................69

GUIDE SPECIFICATIONS ......................................................................................................................................71

FORM 145.05-EG2 (618)

4JOHNSON CONTROLS

THIS PAGE INTENTIONALLY LEFT BLANK.

FORM 145.05-EG2 (618)

JOHNSON CONTROLS 5

Features and Benefits

LOW OWNERSHIP COST

Lower Installation Cost

• Single point power connections.

• Single condenser water inlet and outlet connections. Factory installed internal piping.

• Comprehensive factory testing of refrigerant, condenser water piping, supply fan,

and control system.

• Factory installed internal condensate drain connection.

• Compact design allows smaller mechanical equipment room.

• Optional low service clearance units allow installation in even smaller mechanical

equipment rooms.

• Optional multiple piece shipment allows installation in tight spaces. No eld refrig-

erant or water piping is required.

• Condenser water piping connections from the top of the unit minimizes piping in

mechanical equipment room.

LOWER OPERATING COST

Efficient Operation

• Plenum fan with backward inclined airfoil blades provides required airow at a low-

er energy consumption compared to the most competitive units.

• All scroll compressors combined with highly efcient condenser and evaporator coil

design provides efcient cooling, lowering energy consumption.

• Water economizer and air economizer options provide free cooling to reduce power

consumption.

• Partial occupancy on any oor reduces power consumption, due to multiple com-

pressor operation and optional variable frequency drive (VFD) to match capacity to

the load.

• After hours operation on any oor only requires unit on that oor with partial op-

eration of cooling tower and pumps. This saves signicant amount of energy over

chilled water systems.

• Variable condenser water ow option, with internal actuated valve(s), prevents ow

through units not requiring cooling, saving pump energy.

• Evaporator coil circuiting supports low leaving air temperature designs to reduce

design air ow and reduce fan operating energy.

• High efciency evaporator coil available for lower air ow, low leaving air tempera-

ture applications.

FORM 145.05-EG2 (618)

6JOHNSON CONTROLS

Features and Benefits (Cont’d)

Easier Maintenance

• Large, intuitive operator interface makes for quick set up and easier diagnostics. It is

on the external panel for easy viewing.

• Operator interface for optional VFD on the external panel.

• Easy access to important components through hinged doors for easy maintenance.

• Easily accessible components out of the air stream allow adjustment of components,

including expansion valves, while unit is operating.

• Easy lter access for inspection, removal, and replacement.

• Internally trapped condensate drain cleanout with easy access.

• Available BACnet®communications with Building Automation System (BAS) al-

lows for easier control of larger installations.

• Emergency stop input.

Indoor Air Quality

• Condensate drain pan sloped in all directions to the drain point.

• Stainless steel drain pan standard

• High efciency lters option with pre-lters.

• Evaporator and waterside economizer coils surface may be cleaned from air entering

side as well as air leaving side.

• Easy access to internally trapped condensate drain cleanout.

• Matt faced berglass insulation.

Quieter Acoustic Performance

• Plenum fan with backward inclined airfoil blades provides required airow at a low-

er sound power level compared to the most competitive units.

• Unique placement of internal components minimizes amount of acoustic energy

leaving the unit.

• Supply fan and motor assembly mounted on a frame and isolated with springs.

• Optional discharge plenum congurations allow horizontal supply air discharge,

minimizing the outlet sound and pressure losses.

• Optional inlet plenum conguration minimizes sound escaping the unit inlet.

• Multiple scroll compressors, due to their smoother ow and stepped operation, mini-

mize the sound associated with the refrigerant system.

• The compressors are located out side air stream, including all the refrigerant piping

and condenser water piping.

FORM 145.05-EG2 (618)

JOHNSON CONTROLS 7

STANDARD FEATURES

Controls

• Microprocessor based control system proven algorithms.

• Large 32-key operator interface with large display, in clear language, accessible

without opening panel.

• Alarms and faults displayed and stored in the controller memory.

• Occupied and Unoccupied mode operation.

• Timed Override operation.

• Supply airow proving switch.

• Condensing pressure control when condenser valves are present.

• All refrigerant controls like thermostatic expansion valves, sight glass are out of the

air stream and adjustable while unit is working.

• ETL and CETL listing for US and Canada.

Refrigerant Circuits

• Multiple scroll compressors for better temperature control. Up to six compressors.

• All compressors have independent refrigerant circuits and independent short circuit

protection.

• Automatic compressor lead-lag on units larger than 40 tons.

• Environmentally friendly R-410A refrigerant.

• Completely factory piped, charged, and protected refrigerant circuits.

• Each refrigerant circuit with suction and discharge pressure transducers for enhanced

diagnostics and control.

• Evaporator coil frost protection

• Mechanically cleanable shell and tube condenser, factory tested and piped.

• Factory leak and pressure tested refrigerant piping

• Low ambient compressor lockout.

Supply Fan

• Plenum fan with backward inclined airfoil blades provides required airow at lower

energy consumption and sound compared to the most competitive units.

• Minimum class II fans for high static requirements. Class III fans available.

• Supply fan and motor assembly is isolated with springs to minimize the vibration and

sound transmission to the rest of the unit and beyond.

• Bearing lubrication line brought to one location for easy maintenance.

FORM 145.05-EG2 (618)

8JOHNSON CONTROLS

Features and Benefits (Cont’d)

Unit Cabinet

• Welded base made out of 10-gauge galvanized steel frame and structural members.

• External cabinet parts made out of painted 16-gauge galvanized steel.

• External panels made out of painted 18-gauge galvanized steel.

• Lifting lugs to lift the unit without skid.

• Hinged 2-inch thick access doors covering the coil, compressors, condensers, water

piping, electrical components, and fan access. Insulated where necessary with 2-inch

matt faced berglass insulation.

• Stainless steel drain pan with insulation, sloped in all directions.

• Condensate drain with cleanout and proper slope towards the drain.

Filters Section

• Filter section made out of 18-gauge painted galvanized steel.

• 4-inch thick MERV 8 lters are standard.

Condenser Water Piping

• Factory installed and tested condenser water piping.

• Condenser water piping exiting unit from the top for easier and shorter eld connec-

tions.

OPTIONAL FEATURES

Variable Frequency Drive (VFD)

• Factory installed, wired, and commissioned VFD controls the fan speed in conjunc-

tion with the unit controller, based on a signal from controller.

• Unit installed duct static pressure sensor to sense duct static using elds installed

pneumatic tubes.

• Optional manual electrical bypass manually enables unit to run the supply fan motor

at full speed in case the VFD failure.

Waterside Economizer

• Waterside economizer, which uses colder condenser water available during colder

outdoor conditions, to provide cooling by passing cold condenser water through ad-

ditional water economy coil upstream of the evaporator coil in terms of air ow.

Internal temperature sensors determine suitability of condenser water for full or par-

tial free cooling and route condenser water flow through the water economy coil

when suitable. Internal water piping and valves are included.

• Water economy coil with optional mechanically cleanable return bends is available.

• Condenser water ow through the unit is enabled only in cooling mode. Minimum

condenser water temperature for unit compressor operation in this mode is 40.0°F.

FORM 145.05-EG2 (618)

JOHNSON CONTROLS 9

Condenser Water Regulating Valves

• Units without waterside economizer will permit compressor operation up to 55.0°F

and above. For condenser water temperatures below this threshold, optional con-

denser water regulating valve(s) are available. Optional condenser water valve con-

trols the water ow though unit condensers to maintain minimum discharge pressure

for all compressors with ow through unit enabled only in the cooling mode.

Optional Condenser and Bypass water valves maintain minimum discharge pressure

for all compressors with flow through unit always enabled.

Heating

• Hot water coil with factory installed and tested water piping and valve for modulated

control. Controlled by the unit controller.

• Electric heat, factory installed, wired, and tested.

• All of the heating options are in reheat position. However, the heating will only be

used when cooling is off.

• Only one heating option is available in any unit.

Controls

• Factory installed and wired non-fused disconnect switch for the unit power. Discon-

nect switch is accessible without opening unit doors.

• Static pressure transducer is installed and wired on all variable air volume (VAV)

units to control VFD operation.

• Additional static pressure transducer installed and wired with comparative logic built

in.

• Duct static pressure limit switch mounted and wired in unit to disable unit operation

in case of high duct static.

• BACnet (MS/TP) interface for communication with BAS.

• Water Flow Switch will lock out all compressors in the unit if minimum water ow

is not present.

High Efficiency Air Filtration

• Optional High Efciency MERV 13 4-inch thick lters are available with 4-inch

thick MERV 8 pre-lter.

High Efficiency Evaporator Coils

• High efciency evaporator coil for lower air ow, low leaving air temperature ap-

plications. Provides higher EER and higher capacity.

Modular Construction

• Unit shipped in multiple sections. All refrigerant piping, condenser water piping, and

condensate drain piping is factory assembled and does not require additional eld

work. Various sections are as follows:

• Refrigerant and heating section consisting of evaporator coil, water economy

coil, condensers, compressors, condenser water piping, and heating options.

FORM 145.05-EG2 (618)

10 JOHNSON CONTROLS

• Fan and power section consisting of supply fan and motor assembly, power and

control panels, and VFD.

• Filter section, including the filters.

Low service clearance

• For areas with limited mechanical equipment room space, optional conguration of

the unit requiring less (3 inch) than standard clearance on left of the unit as looking

at the unit from the fan side is required. Less (3 inch) service clearance on the fan

side is also available.

Field Installed Accessories

• Discharge plenum/Outlet plenum.

• Full discharge plenum is factory manufactured discharge plenum with 3-inch

thick matt faced insulation and 20-gauge perforated galvanized steel liner, with

or without factory cut openings.

• Half discharge plenum is factory manufactured discharge plenum with 3-inch

thick matt faced insulation and 20-gauge perforated galvanized steel liner, with

or without factory cut openings.

• Airside economizer with outdoor air connection, damper, and damper actuator at the top,

return air connection, damper, and damper actuator at the back. Provided with connecting

harness for the actuators and sensors, installed by others. Different control options:

• Dry bulb

• Single enthalpy

• Dual enthalpy

• Inlet sound attenuating plenum attaches to the lter section for further reducing the

sound emitted through the unit air inlet.

Features and Benefits (Cont’d)

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