Инструкция на Rooftops (крышные кондиционеры) Lennox серии GCS... с газовой системой подогрева бренда Lennox

SERVICE

UNIT INFORMATION Corp. 9010ĆL3 GCS16 15 TON UNITS Litho U.S.A. GCS16 SERIES 15 TON UNITS GCS16 series units in the 15 ton cooling size were introduced in the fall of 1989. The units are packaged combination two-stage gas heat / two-stage dx cool units designed for commercial applications. Gas heat…

GCS16-1853

SPECIFICATIONS Model No. Input (Btuh) - Low Two Stage Output (Btuh) - Low Heating Capacity Input (Btuh) - High (Natural Gas Only) Output (Btuh) - High A.G.A. Thermal Efficinecy Input (Btuh) - Low Output (Btuh) - Low Two Stage Input (Btuh) - High Heating Capacity (**LPG Gas Only) Output (Btuh) - High…

ELECTRICAL DATA

GCS16-1853 Model No. Line Voltage Data Ć 60Hz. - 1ph Rated load amps CompressorS 3 208/230V 460V total each 19.2 57.6 124 9.6 28.8 total 372.0 each Locked Rotor Amps Condenser Fan Motors (2) Full load amps (total) Locked rotor amps (total) Evaporator Blower Motor Horsepower Full load amps (total)…

TABLE 1

GCS16-1853-330 (HIGH HEAT) BLOWER PERFORMANCE AIR VOLUME (CFM) STATIC PRESSURE EXTERNAL TO UNIT Ċ (INCHES WATER GAUGE) 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP…

GCS16-1853 PARTS ARRANGEMENT

FILTER ACCESS FILTERS EVAPORATORS LEFT CONDENSER FAN HEAT EXCHANGER LEFT CONDENSER COIL COMBUSTION AIR BLOWER BURNER CONTROL BOX MAKE-UP BOX CONTROL BOX COMPRESSORS COMPRESSOR/ CONTROL ACCESS BLOWER BLOWER MOTOR BLOWER ACCESS HEATING ACCESS BURNERS RIGHT CONDENSER COIL FIGURE 1 I-APPLICATION TOP…

GCS16-1853 UNIT CONTROL BOX

PILOT RELAY BOARD A11 TB13 L1 L2 L3 TRANSFORMER FUSE F1 UNIT FUSES F16 POWER DISTRIBUTION TERMINAL BLOCK T1 T2 T3 A11 K3 T1 TRANSFORMER T1 BLOWER CONTACTOR 1 3 DL15 COMPRESSOR 2 TIME DELAY COMPRESSOR 2 CONTACTOR L1 L2 L3 L1 L2 L3 L1 L2 L3 L1 L2 L3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 K2 K10 K14 K1…

9-Indoor Blower Contactor K3

K3 is a 24V to line voltage contactor used to energize the indoor blower motor in response to blower demand. In cooling mode K3 is energized by pilot relay K46 in reĆ sponse to cooling or constant fan demand. In heating mode K3 is energized by relays K20 or K25 (in the heating section) in response…

GCS16-1853-235/330 HEAT EXCHANGER ASSEMBLY

PROVE SWITCH S18 (outer portion of motor housing) COMBUSTION AIR BLOWER MOTOR B6 COMBUSTION AIR BLOWER CAPACITOR C3 COMBUSTION AIR BLOWER HEATING CONTROLS BOX HEAT EXCHANGE TUBES AIR BAFFLE GAS VALVE SPARK ELECTRODE (hidden from view) ROLLOUT SWITCH MOUNTING BRACKET GAS MANIFOLD BURNERS FLAME…

2-Transformer T12

All units use a line voltage to 24V transformer to power the heating control circuits. This transformer is also conĆ nected directly to line voltage and is powered at all times. It has a maximum VA rating of 30VA. 3-Combustion Air Blower Relay K13 (1st Stage Heat Relay) Relay K13 is a DPDT relay…

b- The Fenwal control is illustrated in figure 9. The

fourĆwire harness, plugged directly into a jack on the side of the control, is used to connect control to unit. Each of the four jack terminals is identified by function. The spark electrode wire connects to the spark plugĆtype connector on top of the conĆ trol. d- Proper gas/air mixture is required…

9-Heat Exchanger (Figure 7)

The GCS16 uses aluminized steel inshot burners with matching tubular aluminized steel heat exchangers. The GCS16-1853 uses a 7-tube/burner assembly controlled by a single two-stage gas valve. Each burner uses a burnĆ er venturi to mix gas and air for proper combustion. ComĆ bustion takes place at…

S21 is also wired in series with the ignition control. It funcĆ

tions in the same manner as S10 but is factory set to trip at 140_F +6_F on a temperature rise and automatically reset at 100_F +7_F on a temperature fall. This is a secondary safety shut-down function of the unit. E-Flame Rollout Switch S47 Flame rollout switch S47 is a high temperature cutoff fuse…

J-Electrode Assembly

HONEYWELL GAS VALVE GV1 ON/OFF KNOB PRESSURE REGULATOR* (unĆ der cap) W2 TERMINAL W2 COM. TERMINAL W1 COM. TERMINAL W1 TERMINAL OUTLET GROUND TERMINAL *Adjusts High Fire (2nd Stage) Manifold Pressure OUTLET PRESSURE TAP FIGURE 14 WHITE-RODGERS GAS VALVE GV1 COMMON TERMINALS W2 TERMINAL An electrode…

K-Cooling Components

valve as the primary expansion device. Each evaporator is also equipped with enhanced fins and rifled tubing. The two condenser coils are split into three independent circĆ cuits. Compressor 1 uses an independent circuit in the right condenser coil (figure 16), compressor 2 uses an inĆ dependent…

LEFT CONDENSER COIL

(COMPRESSORS 2 AND 3) GCS16-1853 PLUMBING COMPONENTS CONDENSING SECTION - LIQUID LINES EVAPORATOR COIL RIGHT CONDENSER COIL (COMPRESSORS 1 AND 3) COMPRESSOR TERMINAL BOX THERMOMETER WELL AND GAUGE PORT PUMP 3 THERMOMETER WELL AND GAUGE PORT PUMP 2 FILTER/DRIER THERMOMETER WELL AND GAUGE PORT TEE…

TABLE 5

Unit Voltage/ Phase GCS16 SERIES UNITS - COMPRESSOR SPECIFICATIONS Locked Rated Oil Compressor Viscosity Rotor Load Charge Manufacturer Amps Amps Fl. Oz. GCS16-1853-235 208/230V/3 Bristol 124 GCS16-1853-330 GCS16-1853-235 460V/3 Bristol 62 GCS16-1853-330 GCS16-1853-235 575V/3 Bristol 50…

wired in series with the 1st stage compressor 2 contactor

and S34 is wired in series with the 2nd stage compressor 3 contactor. When discharge pressure drops below 25+5 psig (indicating a loss of charge in the system) the switch opens and the compressor is de-energized. The switch automatically resets when refrigerant is added and presĆ sure in the…

GCS16-1853 BLOWER COMPARTMENT

BELT TENSION ADJUSTMENT EVAPORATORS S10 PRIMARY LIMIT BLOWER PULLEY S21 SECONDARY LIMIT ADJUSTABLE PULLEY (CFM ADJUSTMENT) BLOWER MOTOR BLOWER MULLION DRIVE BELT MOTOR MOUNTING PLATE LINE VOLTAGE MAKE-UP STRIP TB2 LOW VOLTAGE TERMINAL STRIP TB1 MAKE-UP ACCESS COVER FIGURE 20 V-ELECTRICAL CONNECTIONS…

5- Recheck voltage and amp draw with unit running. If

power is not within range listed on unit nameplate, stop unit and consult power company. Refer to unit nameplate for correct running amps. D-Safety or Emergency Shutdown 6- Inspect and adjust blower belt (see section IX-C-Blower Belt Adjustment). E-Extended Period Shutdown B-Cooling Startup NOTE-The…

3- Operate unit (all three compressors) for at least five

minutes to stabilize pressures. 4- Check each stage separately with all stages operatĆ ing. Compare liquid temperatures to outdoor ambient temperature. Approach Temperature = Liquid temperature minus ambient temperature. (For best results use same thermometer for both readings). TABLE 7 UNIT…

D-Testing Gas Supply Pressure

When testing gas supply pressure, connect test gauge to the inlet pressure tap (field provided - figure 22). Test supĆ ply gas pressure with unit firing at maximum rate (both stages energized). Make sure the reading falls within the range of the following values. Low pressure may result in erratic…

5- Support heat exchanger (to prevent heat exĆ

changer from dropping when final bolts are reĆ moved.) TABLE 11 HIGH ALTITUDE DERATE If the heating value of the gas does not exceed the values listed in this table, derating of unit is not required. Should the heating value of the gas exceed the table values, or if the elevation is greater than…

Spark gap may be checked with appropriately sized twist

drills or feeler gauges. Disconnect power to the unit and remove electrode assembly. The gap should be between 0.094" and 0.156". See figure 24. NOTE-If the meter scale reads 0, the leads are reĆ versed. Disconnect power and reconnect leads for proper polarity. M-Combustion Air Blower B6 The…

1- Remove lifting lug bolt located on the blower side of

unit above condensate drain. Use an awl or screw driver to open a hole in the insulation. STATIC PRESSURE TAP LOCATIONS UNIT 2- Insert the positive or high pressure hose of draft gauge 1 inch past the insulation. 3- Remove filter access panel and insert other hose through hole provided on the left…

Adjusting Unit CFM

GCS16-1853 RETURN AIR FILTERS The CFM can be changed by using the following proceĆ dure. 1- Remove the blower belt. 2- Loosen the set screws on motor pulley and remove key as shown in figure 26. 3- Turn pulley clockwise to increase CFM and counterĆ clockwise to decrease CFM. One half turn changes…

E-Combustion Air Blower

COMBUSTION AIR BLOWER CLEANING CLEAN BLOWER WHEEL WITH BRUSH. All GCS16 units use combustion air blowers with pre-lubriĆ cated sealed stainless-steel ball bearings. The combustion air blower centrifugal switch, S18, checks combustion air blower operation before allowing power to the ignition…

SLAB COIL CLEANING PROCEDURE

SEPARATE THIS END ONLY COIL SLAB 1- Remove unit top panel. 2- Remove mullion holding coil. 3- Remove clips connecting coil slabs and sepaĆ rate slabs 3"-4" (76 mm-102 mm). 4- Clean coils with detergent or commercial coil cleaner. 5- Rinse thoroughly with water and reassemble. 6- Visually inspect…

XII-ACCESSORIES

This section describes the application of most of the opĆ tional accessories which can be connected to the GCS16. Some of the accessories (for example, the Warm Up ConĆ trol Kit) are described in the operation sequence section of this manual. num system MUST be installed before the unit is set on…

Refer to the REMD16-185,-300 Installation InstrucĆ

tion Manual for specific details regarding installaĆ tion. Refer to the sequence of operation flowcharts (in back of this manual) for detailed operation of the economizer. The sequence of operation flowcharts also describe how the economizer interacts with the GCS16 and the control system being…

ature is used by the enthalpy control when outdoor

dampers are open to help determine whether outĆ door air dampers should close. The economizer is factory equipped with a single mixed air sensor which fits through a factory supplied hole in the panĆ el dividing unit return and supply air (see figure 35). REMD16-185,-300 ENTHALPY SENSOR AND MERCURY…

Figures 37 and 38 show how an REMD16 is

installed in a GCS16 cabinet. For detailed installaĆ tion and maintenance instructions, refer to the REMD16-185,-300 Installation Instruction Manual. REMD16M DAMPER ASSEMBLY INSTALLATION The following procedure checks only the damper motor. For detailed economizer checkout proceĆ dure refer to…

The PED16 control kit (figure 42) and the economizĆ

er enthalpy control (figure 36) are designed to be loĆ cated in the same area of the unit filter section simulĆ taneously. The enthalpy control is attached to a standĆoff bracket which allows the PED16 control kit to be installed behind as shown in figure 41. and morning warm up. When the first…

C-OAD16 Outdoor Air Damper

WIRE CONNECTIONS The OAD16 outdoor air damper section (figure 43) installs in the GCS16 to allow a fixed amount of outside air into the system. OAD16 consists of a set of manually operated dampers which may be adjusted and locked in place to alĆ low up to 25 percent outside air into the system at…

E-Timed-Off Control Kit (Figure 46)

Optional field installed timed-off controls prevent the GCS16 compressors from short cycling. GCS16-1853 reĆ quires two 40G20 timedĆoff control kits to complete an installation. After a thermostat demand, automatic reset timed-off controls keep compressors off for 3-7 minutes. If thermostat demand…

F-Low Ambient Kit

The optional low ambient kit (figure 47) allows for mechanĆ ical cooling operation at low outdoor temperature. NOTESee CAUTION. CAUTION-Compressor monitor (Low Ambient LockĆ out Switch) S3 cannot be used with optional low ambiĆ ent kit. Compressor monitor MUST be disconnected before allowing low…

LOW AMBIENT THERMOSTAT AND LOW AMBIENT PRESSURE SWITCH FIELD WIRING FOR

GCS16-1853 (LB-57113BB) S3 LOW AMBIENT LOCK-OUT SWITCH (BY-PASS AND TAPE UNUSED LEADS) S11 LOW AMBIĆ ENT PRESSURE SWITCH S41 LOW AMBIENT THERMOSTAT BLUE BLUE Factory Wiring Field Wiring FIGURE 49 LOW AMBIENT THERMOSTAT Thermostat Adjustment: Thermostat is adjustable. A setting of 55_F is recomĆ…

FACTORY WIRING

TYPICAL FIRESTAT WIRING CONTROL TRANSFORMER CUTOUT 24VAC TO UNIT F1 FIELD WIRING 1- Turn off power to unit. 2- Mount and wire firestats per local codes or inĆ suring agencies. Route wires to main control box. 3- Route wires away from sharp metal edges and moving or vibrating components. 24VAC…

quired to interface the GCS16 to the SSP11. An

SSP11 relay kit is also required (in addition to the readĆ out relay kit) in units using an electromechanical therĆ mostat. c- The COMPRESSOR 1" LED lights green when compressor 1 is running. The light turns red if a compressor safety switch opens during a compresĆ sor demand. SP11 STATUS PANEL d…

c-SSP11 Relay Kit

READOUT RELAY KIT (RRB) FIELD WIRING DL6 1 3 C K29 C EXISTING WIRING FIELD WIRING FIGURE 55 RRB Sequence of Operation: 1- Initial heating demand (W1) from the unit is routed through RRB terminal 2 to SP11 terminal 2 to light the green HEAT" light. 2- The same heat demand is routed through RRB…

SP11 FIELD WIRING

таблицы и схемы — в просмотре

OPTIONAL

SSP11 FIELD WIRING ELECTROMECHANICAL

AND ELECTRONIC THERMOSTATS ELECTROMECHANICAL OR ELECTRONIC THERMOSTAT TB1 TERMINAL STRIP Y1 Y1 W1 DISCONNECT FACTORY INSTALLED WIRE G RC NO C 4 S27 OPTIONAL FILTER SWITCH KIT X 9 10 L3 L1 L2 L3 TI T2 T3 TI T2 T3 11 Y2 W2 14 W1 15 1 J3-13 J3-2 CMC3-1 TIME CLOCK Page L2 8 W2 K1 L1 7 Y2 3 CONTACTORS…

TYPICAL FILTER SWITCH INSTALLATION

ROUTE HOSE THROUGH BLOWER COMPARTMENT TO OPPOSITE SIDE OF FILTER AIR FILTERS LEAVE LOW SIDE OF SWITCH OPEN TO ATMOSPHERE OF BLOWER COMPARTMENT SECURE FILTER SWITCH TO INSIDE MULLION ATTACH HOSE TO HIGH SIDE OF SWITCH BLOWER HOUSING FIGURE 62 Page 45

K-Commercial Controls Hardware

All GCS16-1853 units are factory equipped with the hardĆ ware required to connect and operate Lennox' CommerĆ cial Controls (W973, W7400, economizer, warm-up, etc...). The hardware consists of an economizer wiring harness (figure 63) and associated jackplugs. The econoĆ mizer harness is a pre-wired…

Some of the following optional thermostat control

systems have built-in warm up capabilities and the warm up kit shown in figure 65 cannot be added due to wiring incompatibility. WARM UP KIT J8 6- C3 Wiring Diagram Flexstat L2F-N for commercial units without econoĆ mizer or warm-up. Setback is built in. 7- C4 Wiring Diagram Flexstat L2F-N for…

Wiring connections should be made to N.O. terminal 1 and

3 (see figure 69). Refer to the sequence of operation for the control system being used (back of this manual) for correct wiring connections. Refer to the Status Panel" section of this manual for wiring connections of clocks used with SP11 or SSP11. Refer to the manufacturer's opĆ eration and…

The W7400 is used only with the C7Ć3 control system opĆ tion. It cannot be used with any other control system opĆ tion or control damage will result. side air for cooling. W7400 relay kit must be added to inĆ terface the control to the economizer. WARNING-CONNECT ONLY RELAY KITS DEĆ SIGNED FOR THIS…

WARM UP KIT RELAY KIT INSTALLATION

J16 P16 J24 J8 P4 WARM UP KIT J33 J9 P9 TO ECONOMIZER SEE C2-1 WIRING DIAGRAM IN 16 SERIES OPTIONAL CONTROLS MANUAL FIGURE 73 C-Warm-Up Kit The warm-up kit is an option to the REMD16M economizĆ er. The warm-up kit may be applied to any economizer (except units using W7400 control system or T7300…

3-W973 Relay Kit with Warm-Up

XIV-WIRING DIAGRAMS AND OPERATION SEQUENCE

NOTE-THE FOLLOWING DIAGRAM AND OPERATION SEQUENCE SHOWS A BASIC UNIT (B9 and A8 DIAGRAMS) CONNECTED TO AN ELECTROMECHANICAL THERMOSTAT (C1 DIAGRAM) ONLY. NOT PRINTED IN THIS MANUAL. LOOK FOR CONTROL SYSTEM DIAGRAMS AND OPERATION SEQUENCES IN INDIVIDUAL UNIT INFORMATION CONTROL SYSTEM MANUALS PRINTED…

Electromechanical Thermostat Connected to GCS16-1853 without Economizer Page 53 A-GCS16-1853 This flowchart is used to show the step by step sequence that takes place when thermostat demand is sent to the GCS16. The sequence describes the actions of devices in the unit which control blowers, fans…

C1 diagram with D5 diagram

electromechanical thermostat with modulating economizer 24V POWER ECONOMIZER 1 BLOWER HEAT HEAT 2 COOL COOL Page 24V COMMON 7 14 Economizer Footnotes Thermostat Footnotes

C1 DIAGRAM WITH D5 DIAGRAM

Electromechanical Thermostat Connected to GCS16-1853 with Economizer Page 55 B-REMD16 When a REMD16 economizer section is applied to the GCS16-1853 with electromechanical thermostat, three stages of cooling are available dependent on the actions of the economizer enthalpy control. By sensing outdoor…

C2-1 diagram with D5 diagram

electromechanical thermostat with modulating economizer and warm-up 24V POWER 8 5 ECONOMIZER 13 BLOWER 7c HEAT 1 7a 12 9 HEAT 2 COOL 2 6 COOL Page 56 7b 24V COMMON Thermostat Footnotes 15 4 Economizer Footnotes

C2-1 DIAGRAM WITH D5 DIAGRAM

Electromechanical Thermostat Connected to GCS16-1853 with Economizer and WarmĆUp C-WARMĆUP KIT An optional feature of the REMD16 economizer is a warmĆup kit which holds the economizer outdoor air dampers closed during night heat operation and while the GCS16 is warming the building the morning…

Инструкция на Rooftops (крышные кондиционеры) Lennox серии GCS... с газовой системой подогрева

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