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

SERVICE

UNIT INFORMATION Corp. 8911L7 GCS16 2-5 TON UNITS Litho U.S.A. GCS16 SERIES UNITS 2 THROUGH 5 TON UNITS GCS16 series units in the 2-5 ton cooling size were introduced in the summer of 1989. The units are packaged combination gas heat / dx cool units designed for both resi dential and commercial…

SPECIFICATIONS

GCS16H RESIDENTIAL HORIZONTAL ONLY UNITS Model No. GCS16H-261-50 GCS16H-311-75 Heating capacity input (Btuh) - Natural Gas 50,000 75,000 Heating capacity output (Btuh) - Natural Gas Heating capacity input (Btuh) - **LPG 38,000 50,000 56,000 67,500 California Seasonal Efficiency Natural/**L.P.G.…

SPECIFICATIONS

GCS16R RESIDENTIAL UNITS Model No. GCS16R -411-50 GCS16R -411-100 GCS16R -511-125 GCS16R -651-75 GCS16R -651-125 Heating capacity input (Btuh) - Natural Gas 50,000 100,000 125,000 75,000 125,000 Heating capacity output (Btuh) - Natural Gas 37,000 78,000 95,000 58,000 95,000 Heating capacity input…

SPECIFICATIONS - GCS16 COMMERCIAL UNITS

Model No. GCS16-411-50 GCS16-413-50 GCS16-411-100 GCS16-413-100 Heating capacity input (Btuh) - Natural Gas Heating capacity output (Btuh) - Natural Gas Heating capacity input (Btuh) - **LPG Heating capacity output (Btuh) - **LPG A.F.U.E. Natural/**L.P.G. California Seasonal Efficiency…

ELECTRICAL DATA

Model No. Line Voltage Data 60Hz. - 1ph Rated Load Amps Compressor Locked Rotor Amps Condenser Full Load Amps Fan Motor Locked Rotor Amps Full Load Amps Evaporator Blower Locked Rotor Amps Combustion Air Blower - FLA Recommended Max. Fuse Size (amps) Unit Power Factor *Minimum Circuit Ampacity…

GCS16H-261-50 BLOWER PERFORMANCE @ 230v

External Static Pressure (in. wg.) BLOWER DATA GCS16H-261-50 BLOWER PERFORMANCE @ 208v Air Volume (cfm) @ Various Speeds Med. Med. High Low High Low External Static Pressure (in. wg.) Air Volume (cfm) @ Various Speeds Med. Med. High Low High Low 0 1285 1065 1230 .05 1255 1045 925 765 .05 1210 .10…

GCS16(R)-411/413-50 BLOWER PERFORMANCE @ 230v

(With Downflow Supply and Return Air Openings) Air Volume (cfm) @ Various Speeds External Static Pressure Med. Med. High Low High Low (in. wg.) 0 .05 .10 .15 .20 .25 .30 .40 .50 .60 .70 .75 1825 1810 1795 1775 1755 1735 1715 1660 1595 1505 1445 1400 1705 1690 1670 1650 1630 1605 1585 1535 1465 1385…

GCS16(R)-511/513-125 BLOWER PERFORMANCE @ 230v

(With Horizontal Supply and Return Air Openings) External Static Pressure (in. wg.) Air Volume (cfm) @ Various Speeds Med. Med. High High Medium Low Low GCS16(R)-511/513-125 BLOWER PERFORMANCE @ 208v (With Horizontal Supply and Return Air Openings) External Static Pressure (in. wg.) Air Volume (cfm)…

GCS16(R)-651/653-75 BLOWER PERFORMANCE @ 230v

(With Downflow Supply and Return Air Openings) External Static Pressure (in. wg.) 0 .05 .10 .15 .20 .25 .30 .40 .50 .60 .70 .75 Air Volume (cfm) @ Various Speeds Med. Med. High Medium Low High Low 2785 2530 2270 1980 1715 2755 2725 2695 2670 2640 2610 2550 2485 2415 2345 2310 2510 2485 2455 2430…

GCS16H PARTS ARRANGEMENT

COMBUSTION AIR PROVE SWITCH VENT CAP BLOWER / LIMIT CONTROL BOX CONDENSER BURNER COMPRESSOR BURNER ENCLOSURE GCS16H-311-75 only (not shown) (see figure 12) GAS VALVE COMBUSTION AIR BLOWER CONDENSER FAN BLOWER SHIPPING BRACKET CONDENSER FIGURE 1 VENT CAP GCS16-411 PARTS ARRANGEMENT GCS16R-411 PARTS…

GCS16-510/650 PARTS ARRANGEMENT

GCS16R-511/651 PARTS ARRANGEMENT COMBUSTION AIR BLOWER COMBUSTION AIR PROVE SWITCH VENT CAP CONTACTOR COMPRESSOR RUN CAPACITOR CONDENSER FAN (top of unit - not shown) FAN CAPACITOR BLOW ER LIMIT BURNER GAS VALVE IGNITION CONTROL BURNER ENCLOSURE GCS16-510/650-125 only (not shown) (see figure 12)…

GCS16H CONTROL BOX

COMPRESSOR RUN CAPACITOR CONTACTOR IGNITION CONTROL TRANSFORMER COMBUSTION AIR BLOWER RELAY BLOWER RELAY FIGURE 4 GCS16R-411 / GCS16-410 CONTROL BOX BLOWER/LIMIT CONTROL S47 FUSE F1 460V & 575V UNITS ONLY COMPRESSOR CONTACTOR TRANSFORMER T1 TRANSFORMER T3 TERMINAL STRIP TB1 (GCS16 ONLY) INDOOR…

GCS16R-511/651 / GCS16-510/650 CONTROL BOX

BLOWER/ LIMIT CONTROL S47 COMBUSTION AIR BLOWER RELAY K13 INDOOR BLOWER RELAY K20 (HEATING SPEED) 460V & 575V UNITS ONLY COMPRESSOR CONTACTOR INDOOR BLOWER RELAY K3 (COOLING SPEED) START CAPACITOR (SINGLEPHASE ONLY) TRANSFORMER T4 TRANSFORMER T3 TERMINAL STRIP TB1 (GCS16 ONLY) POTENTIAL RELAY K31…

6-Cooling Contactor K1

8-Potential Relay K31 K1 is a 24V to line voltage contactor used to energize the compressor and condenser fan in response to thermostat demand. Threephase units use threepoledoublebreak contactors. Singlephase units use singlepole contac tors. Relay K31 is used in singlephase -510 and -650 units…

B-Heating Components (Figure 8)

HORIZONTAL ONLY CABINET HEATING COMPONENTS DIFFERENTIAL PRESSURE SWITCH BLOWER/LIMIT CONTROL DIFFERENTIAL PRESSURE SWITCH HOSE IMPORTANT-HOSE MUST BE POSITIONED SO CONDENSATE CAN DRAIN IGNITION CONTROL COMBUSTION AIR BLOWER SPARK/SENSOR ELECTRODE ASSEMBLY COMBUSTION AIR TRANSITION ROLLOUT SWITCH…

GCS16 HEAT EXCHANGE ASSEMBLY

CAST IRON CYLINDRICAL HEAT EXCHANGER (PRIMARY) FLAME SPREADER BURNER PLATE BURNER EXHAUST PORT ORIFICE NON-ADJUSTABLE ENDCAP -50, -75, ONLY HEAT FINS HELICAL ALUMINIZED STEEL TUBE EXHAUST (SECONDARY) BURNER CONE AIR OPENINGS GASKET INSULATION RETENTION RING FIGURE 9 1-Heat Exchanger (Figure 9) All…

a-Burners

b-Orifice All units use an inshot burner (see figures 10 and 11). A flame retention ring located in the burner end is used to keep flame from lifting off the burner. The flame is aimed at a round flame spreader located in the combustion cham ber. The spreader distributes the flame evenly around the…

4-Blower / Limit Control

High Temperature Limit S10, Blower Control K25 TABLE 2 Unit Input Thousand Btuh A combination blower/limit control with a bimetal sure start heater (figure 13) is used to control blower operation and protect unit from high temperature operation. It is lo cated in the upper end of the heating vest…

TABLE 3

SECONDARY LIMIT GCS16-410-100 AND GCS16R-411-100 ONLY BLOWER COMBUSTION AIR PROVE SWITCH FACTORY SETTING N.O., closes on pressure drop Unit inches w.c. GCS16H-261 GCS16H-311 GCS16R-411-50 GCS16-411/413-50 GCS16R-411-100 GCS16-411/413-100 GCS16R-511-125 GCS16-511/513-125 GCS16R-651-75…

9-Flue Vent (Figure 15)

11-Combustion Air Blower Capacitor C3 WARNING - VENT CAP ASSEMBLY MUST BE INSTALLED WITHOUT MODIFICATION. ANY MOD IFICATION TO THE VENT CAP ASSEMBLY OR FAILURE TO INSTALL ASSEMBLY CAN RESULT IN IMPROPER OPERATION AND WILL VOID THE AGA/CGA CERTIFICATION OF THE UNIT. CAUTION - DO NOT START OR OPERATE…

TOP VIEW

FENWAL IGNITION CONTROL POWER (24VAC INPUT) TO GAS VALVE (24VAC OUTPUT) TO FLAME SENSOR SPARK GROUND HIGH VOLTAGE FIGURE 18 combustion air blower operation. The control allows 30 to 13-Electrode Assembly 40 seconds for the combustion air blower to vent exhaust The spark electrode/flame sensor…

d- Proper gas/air mixture is required for ignition on the

first attempt. If there is any deviation, within toler ance of the unit, a second or third trial may be nec essary for ignition. The control will lock out the heating system if ignition is not obtained within three trials and the (indoor) blower will not start. Reset after lockout requires only…

C-Cooling Components

Summary of Features All units use DX cooling. Cooling in commercial units (GCS16) may also be supplemented by fieldinstalled economizer. GCS16H-261/311, GCS16-411/413 and GCS16R-411 units use a single slabtype enhanced fin evaporator with rifled tubing and capillary, cap," tubes as the primary…

PLUMBING COMPONENTS

THERMAL EXPANSION VALVE SYSTEMS HIGH PRESSURE AND LOSS OF CHARGE SWITCHES USED ON GCS16 UNITS ONLY. GCS16-511/513 GCS16R-511 SUCTION LINE GAUGE PORT EVAPORATOR COIL SUCTION LINE LIQUID LINE STRAINER EXPANSION VALVE CONDENSER COIL LOSS OF CHARGE SWITCH (GCS16 only) HIGH PRESSURE SWITCH (GCS16 only)…

TABLE 6

GCS16 SERIES UNITS - COMPRESSOR SPECIFICATIONS Unit Voltage/ Phase Locked Rotor Amps Rated Load Amps Oil Charge Fl. Oz. Viscosity Oil Type GCS16H-261 208/230/1 57.0 12.0 40 GCS16H-311 GCS16R-411 208/230/1 208/230/1 77.5 83.5 13.5 17.6 40 55 GCS16-411 GCS16-413 208/230/1 208/230/1 83.5 66.0 17.6 11.5…

Unit

TABLE 7 TABLE 9 COMPRESSOR START CAPACITOR MFD @ Volts CONDENSER FAN MOTOR CAPACITOR Unit & Unit Voltage Type MFD @ Volts GCS16H-261 GCS16H-311 GCS16R-411 GCS16-411 GCS16R-511 GCS16-511 GCS16R-651 GCS16-651 Not Used Not Used Not Used Not Used 135 to 155 @ 320 VAC 135 to 155 @ 320 VAC 176 to 216 @…

460v and 575v units use threephase 460v blower motors

Run capacitor is not required. G VOLTAGE BLOWER MOTOR TYPICAL TO COMPRESSOR BR2 BLUE TABLE 11 DEMAND Unit 208/230v YELLOW BR2 BLACK-HIGH ORANGE RED-LOW P9 7 MFD at 370 V GCS16-411/-413 GCS16R-411 10 MFD at 370 V GCS16-511-/-513 GCS16R-411 20 MFD at 370 V GCS16-651-/-653 GCS16R-411 20 MFD at 370 V…

III-PLACEMENT AND INSTALLATION

EVAPORATOR PLUMBING GCS16-511/513, GCS16-651/653 GCS16R-511 and GCS16R-651 Make sure that the unit is installed in accordance with the installation instructions and all applicable codes. See ac cessories section for conditions requiring use of the op tional roof mounting frame (RMF16). SENSING BULB…

B-Cooling StartUp

VI-REFRIGERATION SYSTEM SERVICE CHECKS NOTE - The following is a generalized procedure and does not apply to all thermostat control systems. Elec tronic and ramping thermostat control systems may operate differently. Refer to the operation sequence section of this manual for more information. The…

4- Read liquid line pressure from gauge and convert to

condensing temperature using standard HCFC22 temperature/pressure conversion chart (or conver sion scale on gauge). 5- The difference between the liquid line temperature (from step 3) and the conversion temperature (from step 4) is subcooling (subcooling = conversion tem perature minus liquid…

VII-HEATING SYSTEM SERVICE CHECKS

A-A.G.A./C.G.A. Applications and Require ments All GCS16s are A.G.A and C.G.A. design certified without modification. Refer to the GCS16 Operation and Installation Instruction Manual for more information. B-Gas Piping Gas supply piping must not allow more than 0.5"W.C. drop in pressure between the…

TABLE 15

GAS VALVE MANIFOLD ADJUSTMENT Unit MANIFOLD PRESSURE AD JUSTMENT SCREW Unit Input Unit Output GCS16(H)50 50,000 Btuh 40,000 Btuh GCS16-75 75,000 Btuh 60,000 Btuh GCS16-100 100,000 Btuh 80,000 Btuh GCS16-125 125,000 Btuh 100,000 Btuh Input (cubic feet) ON G-High Altitude Derate OFF The maximum input…

Burner is factory set and does not require adjustment

End-cap (if used) cannot be adjusted. Always operate the unit with access panel in place. A peep hole with cover is furnished in the cabinet access panel for flame viewing. On units equipped with burner enclosure, a glass viewing port is also provided for viewing flame. The flame should be blue with…

6-Replace gasket and reassemble (reverse steps

1-5). Be sure to secure all wires and check plumb ing and burner plate for airtight seal. Bolts must be torqued to 35 inlbs. to ensure proper operation. 2-Remove cabinet end panel (see figure 33). 7-Turn on power to unit. 4-Remove bolt in back of casting (see figure 34). 3-Remove combustion air…

diately in the event of a gas or power failure. Upon restora

tion of gas and power, the control will restart the ignition sequence and continue until flame is established or sys tem lockout occurs. GCS16 BURNER / ELECTRODE ASSEMBLY SIDE VIEW For proper unit operation, the electrodes must be positioned correctly in the flame and must be gapped correctly. CL…

To Measure Discharge Static Pressure: a- Measure tap locations as shown in figure 36. Check blower control by operating unit through a heating cycle. If blower recycles after demand is satisfied, control should be adjusted. In any case, blower off" settings above 90F will cause the blower to recycle…

is factory wired to provide a single cooling speed and a

single heating speed. The speeds can be changed by moving the cooling wire or the heating wire to a different port at the harness connector. TABLE 18 Speed FIVE SPEED BLOWER MOTORS Tap Number Low Medium-Low Medium Medium-High High Common Heating Speed: Blower speed selection is accomplished by…

D-Blower Speed Adjustment

460V and 575V Units ONLY Use the steps outlined in the previous section (Blower Speed Adjustment 208V/230V Only) to determine which J38 jumper to use. All 460V and 575V units have three speed blower motors with pigtail leads (taps). The taps are arranged as shown in table 20. Both 460V and 575V…

B-Filters

e-Remove spark/sensor electrode assembly from burner plate. Check the spark electrode and flame sensing electrode gaps. Reinstall the burner and ensure that the burner head is lined up correctly with flame spreader. Replace the four screws se curing the gas/burner manifold to the burner plate. GCS16…

F-Flue

IMPORTANT - Pay close attention to the order in which the flue orifice and gaskets are installed. Inspect all gaskets for deterioration. Replace if neces sary. 3- Remove the screws holding the blower housing to the flue box cover plate and wires attached to the motor. 4- If blower can be…

XI-ACCESSORIES

TABLE 21 This section describes the application of most of the op tional accessories which can be connected to the GCS16. Some of the accessories (for example, the Warm Up Con trol Kit) are described in the operation sequence section of this manual. Unit A-Lifting Lug Kit Optional lifting lug kit…

B-RMF16 Mounting Frame

Many types of roof framing or supports can be used to mount the GCS16 unit, depending upon different roof structures. A typical field fabricated roof mounting frame is shown in figure 43. RMF16 MOUNTING FRAME C-Economizers 1-Application REMD16(M) and EMDH16(M) economizers can only be applied to…

2-REMD16 Downflow Economizer

REMD16M Downflow Economizer 3-EMDH16 Horizontal Economizer EMDH16M Horizontal Economizer The REMD16 and REMD16M economizers (figure 44) are designed for use with standard (downflow) GCS16s. The economizer opens a set of dampers to allow 0 to 100 percent outdoor air to be used for cooling when…

REMD16M PARTS ARRANGEMENT

ENTHALPY CONTROL ACCESS COVER REMOTE MOUNTING BASE DAMPER MOTOR MIXED AIR SENSOR NOTE - Mixed air sensor is shown as it is factory installed in a REMD16M-41. REMD16M-65 is similar. Mixed air sensor should be removed from economizer and installed in supply air stream as shown in figure 50. REMD16…

EMDH16M PARTS ARRANGEMENT

OUTDOOR AIR DAMPERS ACCESS COVER REMOVED NOTE - Mixed air sensor is shown as it is factory installed in a EMDH16M-41. EMDH16M-65 is similar. Mixed air sensor should be removed from economizer and installed in supply air stream as shown in figure 50. OUTDOOR DAMPER HOOD MIXED AIR SENSOR ENTHALPY…

4-Economizer Operation

a-Enthalpy Control: Setpoint Control The key to economizer operation is the enthalpy control. The enthalpy control senses the total heat content of the outside air (temperature plus humid ity) and uses that information to control the amount of outside air brought into the system. When the en thalpy…

MIXED AIR SENSOR

ENTHALPY SENSOR ALL ECONOMIZERS GCS16 UNIT ENTHALPY SENSOR SUPPLY AIR OUTDOOR AIR DAMPERS DAMPER HOOD SENSOR HOLE LOCATION CONTROL HARNESS REMD16M and EMDH16M MIXED AIR SENSOR INSTALLATION FIGURE 49 d-Mixed Air Sensor The sensor measures the resultant temperature of the mixed air downstream of the…

compartment. All connections are made with quick

connect type harness connectors. For specific de tails of economizer wiring and operation, refer to the sequence of operation section of this manual. 5- Restore power to unit. Outdoor damper should drive to fully open position (60 to 90 sec. required for full travel). Observe travel for proper…

7- Restore power to unit. Outdoor damper

should drive to mid (minimum) position (re quires approximately 90 seconds for full trav el). Adjust minimum position by turning thumb wheel on damper motor. DPDT relay which is hardwired to the economizer harness. If a W973 system is used, the relay holds the out door dampers closed during setback.…

E-RDE16-41 Duct Enclosure for

REMD16-41 and REMD16M-41 Economizer Limited Application GCS16H Series Units Only GCS16H may be converted to downflow operation by add ing an RDE16-41 downturn transition and RMF16-41 roof mounting frame as shown in figure 56. A manual outdoor air damper is factory provided with the RDE16. The damp…

FIELD WIRING - WIRE ROUTING J3/P4 ECONOMIZER HARNESS REMD16(M)-41 ECONOMIZER WIRING HARNESS SUPPLIED WITH RDE16-41 RDE16-41 TRANSITION GCS16H UNIT (B" SECTION WIRING DIAGRAM) HEATING COMPARTMENT ECONOMIZER PIGTAILS SEE C19 TO B34 WIRING DIAGRAM (BACK OF THIS MANUAL) CONTROL BOX COMPRESSOR…

F-LPG Kit

All A.G.A rated GCS16s are factory set for use with Natu ral Gas. An optional L.P.G. conversion kit allows change over from Natural to L.P.G. supply. The kit includes a gas valve changeover kit, new gas orifice and either combus tion air orifice or combustion air restrictor plate. All C.G.A. rated…

units equipped with burner enclosure (figure 12), the en

closure must be carefully disassembled to gain access to the burner and restrictor plate. L.P.G. COMBUSTION AIR ORIFICE GCS16H-50 UNITS COMBUSTION AIR BLOWER LPG BURNER RESTRICTOR PLATE GCS16R-50 AND GCS16-50 UNITS INSTALL OUTER RESTRICTOR PLATE SECURING AT THE TOP AND BOTTOM WITH EXISTING BOLTS.…

H-High Altitude Kit (CGA only)

K-Timed-Off Control Kit (Figure 68) Optional CGA high altitude kit is not available at this time. If derate is required, follow the instructions in table 16. Optional field installed timedoff controls prevent the GCS16 compressor from short cycling. After a thermostat demand, automatic reset…

minute timed off period, the compressor is immediate ly energized. 4- If there is no thermostat demand at the end of the 3-7 minute timed off period, the compressor remains de energized until the next thermostat demand when all safety circuits are closed. Wiring: 1- Disconnect power to the unit. 2…

140psig). Adjustment should not be needed. If adjustment

is needed, adjust the switch as follows: 1- Loosen knob securing screw to allow knob stop to pass over fixed stop on control (see figure 72). FIELD WIRING LOW AMBIENT KIT COMPRESSOR CONTACTOR LOW AMBIENT PRESSURE SWITCH DIFFERENCE (set by knob) = CUT-IN POINT (fixed) mi nus CUT-OUT POINT BLUE To…

O-Firestats

Some local codes may require the installation of discharge air and return air firestats to automatically shut down the unit when excessive temperature is reached . Other local codes may require firestats wired to perform tasks such as energizing a blower or closing dampers. These field pro vided…

P-Transitions

Optional supply/return transitions (SRT16 AND SRTH16) are available for use with downflow GCS16s utilizing the optional RMF16 roof mounting frame. The transition must be installed in the RMF16 mounting frame before mount ing the GCS16 to the frame. Refer to the manufacturer's instructions included…

a-The COOL MODE" LED lights green to indicate

economizer free cooling" operation when unit in cludes the economizer option. Otherwise, the LED indicates mechanical cooling operation. b-The HEAT MODE" LED lights green during normal heating operation. c-The COMPRESSOR 1" LED lights green when the compressor is running. The light turns red if a…

4- After gas valve GV1 receives power, relay K29 is

energized. Contacts K29-1 open and time delay DL6 resets. 5- If the gas valve does not receive power (indicat ing a problem with the ignition control or the safe ty circuits) before time delay DL6 finishes its 60 sec. count, time delay contacts close and red NO HEAT" light is energized. 6- Other…

FIELD WIRING SP11

GCS16-410 THROUGH -650 (applicable to units equipped with commercial controls only) NOTE-This diagram shows field wiring connections made IN ADDITION TO thermostat field wiring. Thermostat field wiring is not shown. W7400 RRB Y1 1 2 W1 Page 61 SP11 STATUS PANEL W973 RRB C1 1 C NO 2 H1 GCS16 UNIT…

FIELD WIRING SSP11

GCS16-410 THROUGH -650 UNITS WITH ELECTROMECHANICAL THERMOSTAT C1 or C2 THERMOSTAT CONTROL SECTION INSTALLED (applicable to units equipped with commercial controls platform only) NOTE-This diagram shows field wiring connections made IN ADDITION TO thermostat field wiring. Thermostat field wiring is…

FIELD WIRING SSP11

GCS16-410 THROUGH -650 UNITS WITH W973 C8 or C14 THERMOSTAT CONTROL SECTION INSTALLED (applicable to units equipped with commercial controls platform only) NOTE-This diagram shows field wiring connections made IN ADDITION TO thermostat field wiring. Thermostat field wiring is not shown. GCS16 UNIT…

TYPICAL FILTER SWITCH INSTALLATION

LEAVE LOW SIDE OF SWITCH OPEN TO ATMOSPHERE OF BLOWER COMPARTMENT SECURE FILTER SWITCH TO BLOWER HOUSING OR INSIDE MULLION ATTACH HOSE TO HIGH SIDE OF SWITCH GCS16 UNIT BLOWER HOUSING HORIZONTAL SUPPLY AND RETURN AIR COVERS FIELD SUPPLIED AIR FILTER MOUNTED IN RETURN AIR DUCT SUPPLY AIR RETURN AIR…

S-Commercial Controls Hardware

(GCS16 Commercial Units Only) 1- D5 - Modulating Economizer Horizontal or Downflow Modulating Economizer. Op tional field installed in all GCS16 and GCS16H units (GCS16R excepted). Sensors continuously monitor air conditions and adjust dampers accordingly. Infi nite number of damper positions. All…

Some of the following optional thermostat control

systems have builtin warm up capabilities and the warm up kit shown in figure 84 cannot be added due to wiring incompatibility. 8- C2 Standard 2 heat / 2 cool thermostat for all commercial units with economizer and warmup. CMC3-1 clock and night thermostat must be added for night set back. Night…

16-C7 -- W7400 control system for commercial units without

economizer. Setback is built in. See Figure 86. W973 THERMOSTAT CONTROL KIT W7400 THERMOSTAT CONTROL KIT Control Module Control Module J17 NOT USED P17 P17 J17 J5 P5 Heat Pump Adaptor Relay P6 Relay Kit Relay Kit J6 J23/P23 FIGURE 87 FIGURE 86 17-C7-3 W7400 control system for commercial units.…

COMMERCIAL CONTROLS

MOUNTING BOX 1/4 TURN FASTENER SUPPLY AIR OPENING PIANO HINGE (use existing screw holes) RETURN AIR OPENING CONTROLS MOUNTING BOX FIGURE 88 COMMERCIAL CONTROLS MOUNTING BRACKET The box is fully insulated and a gasket around the enclo sure flange provides an airtight seal. When servicing the controls…

XII-COMMERCIAL CONTROLS

INSTALLATION OF PLUG-IN KITS (Figure 92) necting a night thermostat during periods when the build ing is not occupied. The night thermostat can then be ad justed with a lower setpoint as needed for unoccupied heating. The commercial controls harness allows optional com mercial controls and…

The W7400 is used only with the C7 control system option. It cannot be used with any other control system option or control damage will result. side air for cooling. W7400 relay kit must be added to inter face the control to the economizer. WARNING - CONNECT ONLY RELAY KITS DE SIGNED FOR THIS…

HONEYWELL W7400 INSTALLATION

WITH ECONOMIZER GCS16 UNIT SUPPLY AIR P17 J16 CAUTION - HARNESS BUNDLES MUST BE SECURED WITH WIRE TIES AWAY FROM DAMPER BLADES. FAILURE TO SECURE WIRES COULD RENDER ECONOMIZER INOPERABLE. HARNESS FROM UNIT CONTROL MOUNTING BOX DOWNFLOW UNITS W7400 CONTROL W7400 CONTROL J17 J5 BLOWER P16 P4 P5 J3 P3…

WARM UP KIT

RELAY KIT INSTALLATION CAUTION - HARNESS BUNDLES MUST BE SE CURED WITH WIRE TIES AWAY FROM DAMPER BLADES. FAILURE TO SECURE WIRES COULD RENDER ECONOMIZER INOPERABLE. GCS16 UNIT SUPPLY AIR HARNESS FROM UNIT CONTROL MOUNTING BOX DOWNFLOW UNITS P16 J16 WARM-UP KIT WARM-UP KIT BLOWER P3 REMOVED AND…

be connected to plug P19 on the W973. Jumper plug J12 (also supplied with the W973) is not used with GCS16s and may be discarded. The W973 is used only with the C8 and C14 control sys tem options. It cannot be used with any other control sys tem options or control damage will result. 2-W973 Relay…

HONEYWELL W973 CONTROL

INSTALLATION with ECONOMIZER CAUTION - HARNESS BUNDLES MUST BE SE CURED WITH WIRE TIES AWAY FROM DAMPER BLADES. FAILURE TO SECURE WIRES COULD RENDER ECONOMIZER INOPERABLE. GCS16 UNIT SUPPLY AIR HARNESS FROM UNIT J17 P16 BLOWER W973 CONTROL W973 RELAY KIT W973 RELAY KIT DOWNFLOW RETURN AIR OPENING P6…

XIII-WIRING DIAGRAMS AND OPERATION SEQUENCE

The following section shows the wiring diagrams for all units and all possible control systems. An operation se quence is provided with each diagram. How the diagrams are organized The operation sequence of each unit is unique and inde pendent of the control system. For example, a GCS16-651-125 unit…

C24 diagram with B34 diagram basic thermostat with residential GCS16R or GCS16H

Page

C24 DIAGRAM AND B34 DIAGRAM

Electromechanical or Electronic Thermostat Connected to Residential units (GCS16R and GCS16H) without Economizer Harness or Unit Terminal Strip Page 77 A-RESIDENTIAL THERMOSTAT SYSTEMS This flowchart is used to show the step by step sequence that takes place when thermostat demand is sent to the…

C19 diagram with B34 diagram and D8 diagram

special limited commercial application of residential GCS16H with basic thermostat, downturn transition and three-position economiz er Page Thermostat Footnotes Economizer Footnotes 3 Unit Footnotes

C19 DIAGRAM AND B34 DIAGRAM AND D8 DIAGRAM

Limited Commercial Application Basic Electromechanical or Electronic Thermostat Connected to Residential Horizontal-Only Unit (GCS16H) with RDE16 and Three-Position Economizer Page 79 2- C19 SECTION and B34 SECTION with D8 Section (commercial application of elec tromechanical or electronic…

C19 diagram with B34 diagram and D5 diagram

special limited commercial application of residential GCS16H with basic thermostat, downturn transition and modulating economiz er Page Thermostat Footnotes Economizer Footnotes 6 Unit Footnotes

C19 DIAGRAM WITH B34 DIAGRAM AND D5 DIAGRAM

Limited Commercial Application Basic Electromechanical or Electronic Thermostat Connected to Residential Horizontal-Only Unit (GCS16H) with RDE16-41 and Modulating Economizer Page 81 3- C19 SECTION and B34 SECTION with D5 Section (commercial application of elec tromechanical or electronic thermostat…

C1diagram with B34 diagram basic thermostat with commercial single-phase GCS16

Page

C1 DIAGRAM AND B34 DIAGRAM

Electromechanical Thermostat Connected to single-phase commercial unit (GCS16) without economizer Page 83 B-COMMERCIAL THERMOSTAT SYSTEMS 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…

C1diagram with B35 diagram

5 electromechanical thermostat without economizer connected to 208/230V-3ph. commercial unit Page Thermostat Footnotes Unit Footnotes

thermostat without economizer

C1diagram with B36 diagram electromechanical connected to 460V or 575V - 3ph. commercial unit Page Unit Footnotes Thermostat Footnotes

Electromechanical Thermostat with ThreePhase Commercial Units Page 86 2-C1 Section Connected to B35 Section OPERATION SEQUENCE: 208/230V THREEPHASE UNITS (TOP) All units equipped with Crankcase Heater, High Pressure Switch, Loss of Charge Switch and low voltage terminal strip. 1- Line voltage…

C1diagram with D8 diagram

electromechanical thermostat with threeposition economizer Page Thermostat Footnotes Economizer Footnotes

C1 DIAGRAM WITH D8 DIAGRAM

Electromechanical Thermostat with Threeposition Economizer Page 88 4-C1 Section with D8 Section - Basic (threeposition) Economizer Operation When a REMD16 or EMDH16 Economizer section is applied to the GCS16 with electrome chanical thermostat, two stages of cooling are available dependent on the…

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 with Modulating Economizer Page 90 5-C1 Section with D5 Section - Basic (modulating) Economizer Operation When a REMD16M or EMDH16M Economizer section is applied to the GCS16 with electro mechanical thermostat, two stages of cooling are available dependent on the actions…

diagram electromechanical thermostat with threeposition economizer and warm-up 24V POWER 8 ECONOMIZER BLOWER 7a 9 HEAT 1 1 7c HEAT 2 COOL COOL 1 14 Page 91 7b 24V COMMON Economizer Footnotes Unit Footnotes

C2-1 DIAGRAM WITH D8 DIAGRAM

Electromechanical Thermostat with Threeposition Economizer and Warm-Up 6-C2-1 Section with D8 Section An optional feature of the REMD16 and EMDH16 Economizer is a warm-up kit which holds economizer outdoor air dampers closed during night heat operation and while the GCS16 is warming the building…

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 93 7b 24V COMMON Thermostat Footnotes 15 4 Economizer Footnotes

C2-1 DIAGRAM WITH D5 DIAGRAM

Electromechanical Thermostat with Modulating Economizer and Warm-up 7-C2-1 Section with D5 Section An optional feature of the REMD16M and EMDH16M Economizer is a warm-up kit which holds economizer outdoor air dampers closed during night heat operation and while the GCS16 is warming the building…

C11-1 diagram electromechanical thermostat with night setback relay kit

24V POWER 3 ECONOMIZER BLOWER 4 HEAT 1 HEAT 2 COOL 2 COOL 1 Page 95 1 24V COMMON 5 2

C11 DIAGRAM

Electromechanical Thermostat with Night Setback Thermostat and without Economizer Page 96 8-C11 SECTION (electromechanical thermostat with night relay kit) Optional night (setback relay) kit allows GCS16 units without economizer (REMD16 or EMDH16) to automatically setback the thermostat to reduce…

C3 diagram Flexstat thermo

C5 diagram Prostat thermostat stat Page 97

C3 DIAGRAM and C5 DIAGRAM

Flexstat (C3) and Prostat (C5) without Economizer or WarmUp C-ELECTRONIC THERMOSTAT SYSTEMS 1-C3,C5 Sections Optional Flexstat C3-1/Prostat C5-1 programmable thermostats allow GCS16's without econ omizer to automatically setback or setup setpoints for unoccupied periods as well as control setpoints…

C3 diagram with D8 diagram Flexstat with three-position economizer

Page Economizer Footnotes Thermostat Footnotes

C5 diagram with D8 diagram Prostat with three-position economizer

24V POWER 14 ECONOMIZER 3 2 BLOWER 5 HEAT 1 6 HEAT 2 15 COOL COOL Page 24V COMMON Economizer Footnotes Thermostat Footnotes

Flexstat or Prostat with Three-position Economizer Page 101 2-C3 or C5 Section with D5 Section An EMDH16 or REMD16 economizer may be applied to a GCS16 with Flexstat or Prostat. Both are programmable thermostat which allow GCS16 units to automatically setback or set up setpoints for unoccupied…

C3 diagram with D5 diagram Flexstat with modulating economizer

Page Thermostat Footnotes Economizer Footnotes

C5 diagram with D5 diagram Prostat with modulating economizer

BLOWER 5 3 ECONOMIZER 1 HEAT HEAT COOL COOL 1 Page 24V COMMON Economizer Footnotes Thermostat Footnotes

Flexstat or Prostat with Modulating Economizer Page 104 3-C3 or C5 Section with D5 Section An EMDH16M or REMD16M economizer may be applied to a GCS16 with Flexstat or Prostat. Both are programmable thermostats which allow GCS16 units to automatically setback or set up setpoints for unoccupied…

C4diagram with D8 diagram Flexstat with three-position economizer and warm-up

24V POWER ECONOMIZER 3 BLOWER 6 HEAT HEAT 2 26 COOL COOL Page 24V COMMON Thermostat Footnotes Economizer Footnotes

C6 diagram with D8 diagram Prostat with three-position economizer and warm-up

24V POWER 3 12 ECONOMIZER BLOWER 8 HEAT HEAT 2 26 COOL COOL Page 24V COMMON Economizer Footnotes Thermostat Footnotes

Flexstat or Prostat with Three-position Economizer and Warm-up Page 107 4- C4 or C6 Section with D8 Section Optional Flexstat or Prostat programmable thermostat allows GCS16 units to automatically setback setpoints for unoccupied periods as well as control setpoints more precisely than…

C4 diagram with D5 diagram

Flexstat with modulating economizer and warm-up 24V POWER ECONOMIZER BLOWER HEAT HEAT 2 22 COOL 2 COOL Page 24V COMMON Thermostat Footnotes Economizer Footnotes

C6 diagram with D5 diagram Prostat with modulating economizer and warm-up

24V POWER 3 12 ECONOMIZER BLOWER HEAT HEAT 2 22 COOL 2 COOL Page 24V COMMON Thermostat Footnotes Economizer Footnotes 21

FLEXSTAT or PROSTAT WITH MODULATING ECONOMIZER AND WARM-UP Page 110 5- C4 or C6 Section with D5 Section Optional Flexstat or Prostat programmable thermostats allow GCS16 units to automatically setback setpoints for unoccupied periods as well as control setpoints more precisely than electromechanical…

24V POWER ECONOMIZER 2 BLOWER 3 HEAT 1 HEAT 2 Page 111 COOL 2 4 COOL 1 24V COMMON 1

C12 DIAGRAM

Honeywell T7300 Thermostat without Economizer 6-C12 Section The Honeywell T7300 programmable thermostat allows GCS16 units without economizer to automatically setback or setup setpoints for unoccupied periods as well as control setpoints more precisely than electromechanical thermostats. NOTE - In…

C12 diagram with D8 diagram T7300 with three-position economizer

24V POWER ECONOMIZER 5 11 BLOWER HEAT 1 4 HEAT COOL 2 COOL 1 Page 24V COMMON Thermostat Footnotes Economizer Footnotes 7 8

C12 DIAGRAM WITH D8 DIAGRAM

Honeywell T7300 Thermostat with ThreePosition Economizer 7-C12 Section with D8 Section The Honeywell T7300 programmable thermostat allows GCS16 units without economizer to automatically setback or setup setpoints for unoccupied periods as well as control setpoints more precisely than…

C12 diagram with D5 diagram T7300 with modulating economizer

24V POWER ECONOMIZER BLOWER 2 HEAT HEAT 2 9 COOL 2 11 COOL 1 6 Page 24V COMMON Thermostat Footnotes Economizer Footnotes

C12 DIAGRAM WITH D5 DIAGRAM

Honeywell T7300 Thermostat with Modulating Economizer 8-C12 Section with D5 Section The Honeywell T7300 programmable thermostat allows GCS16 units without economizer to automatically setback or setup setpoints for unoccupied periods as well as control setpoints more precisely than electromechanical…

C7-3 diagram with D8 diagram W7400 Control threeposition economizer

Page Thermostat Footnotes Economizer Footnotes

C7-3 DIAGRAM WITH D8 DIAGRAM

Honeywell W7400 Control System and T7400 Thermostat with ThreePosition Economizer D-ELECTRONIC CONTROL SYSTEMS 1-C7-3 Section with D8 Section The Honeywell W7400 control / T7400 thermostat system, when applied to a GCS16 allows fully programmable operation of the unit during occupied or unoccupied…

C7-3 diagram with D5 diagram W7400 Control with modulating economizer

Page Economizer Footnotes Thermostat Footnotes

C7-3 DIAGRAM WITH D5 DIAGRAM

Honeywell W7400 Control System and T7400 Thermostat with Modulating Economizer 2-C7-3 Section with D5 Section The Honeywell W7400 control / T7400 thermostat system, when applied to a GCS16 allows fully programmable operation of the unit during occupied or unoccupied periods. Morning warm-up…

24V POWER 10 ECONOMIZER 1 BLOWER HEAT 1 16 HEAT 2 COOL 2 COOL 1 15 Page 24V COMMON

C8-1 DIAGRAM

Honeywell W973 Control System and T7067 Thermostat without Economizer 3-C8-1 Section Honeywell W973 control, when added to the GCS16 system, allows use of electronic ramping thermostats, discharge temperature sensors, return air temperature sensors and/or remote thermostats and transmitters. W973…

C8-1 diagram with D8 diagram W973 Control with threeposition economizer

24V POWER ECONOMIZER 21 BLOWER 25 23 HEAT HEAT COOL COOL Page 24V COMMON 5 22 Thermostat Footnotes Economizer Footnotes

C8-1 DIAGRAM WITH D8 DIAGRAM

Honeywell W973 Control System and T7067 Thermostat with Three-position Economizer 4-C8-1 Section with D8 Section An REMD16/EMDH16 economizer added to a GCS16 with a Honeywell W973 Control allows the use of outside air for first stage cooling controlled by an enthalpy control and electronic ramping…

C8-1 DIAGRAM WITH D8 DIAGRAM

Night Setback (optional field installed) 20- Optional field installed time clock and night relay K11 must be connected for night setback op eration. 21- Blower B3 operates only during a heating demand when night thermostat is closed. Energized by relay K25 in unit. 22- When clock contacts close…

C8-1diagram with D5 diagram W973 Control with modulating economizer

24V POWER ECON BL H1 2 HEAT COOL COOL Page 24V COMMON Thermostat Footnotes Economizer Footnotes 23

C8-1 DIAGRAM WITH D5 DIAGRAM

Honeywell W973 Control System and T7067 Thermostat with Modulating Economizer 5-C8-1 Section with D5 Section An economizer REMD16M/EMDH16M added to a GCS16 with a Honeywell W973 Control al lows the use of outside air for 1st stage cooling controlled by an enthalpy control and electronic ramping…

C8-1 DIAGRAM WITH D5 DIAGRAM

Enthalpy High (outside air cannot be used for cooling): 17- Enthalpy control switches 1K and 2K internally. 18- Cooling demand is sent from A1 terminal C1 through enthalpy control terminals 1 and 2 and through enthalpy control terminal 5 to energize the compressor and relays K37 and K55. The…

C14-1diagram with D8 diagram W973 Control with three-position economizer and warm-up

C14-1 DIAGRAM WITH D8 DIAGRAM

Honeywell W973 Control System and T7067 Thermostat with Three-position Economizer and Warm-Up 6-C14-1 Section with D8 Section The Honeywell W973 control, when added to the GCS16 system, allows the use of electronic ramping" thermostat, discharge temperature sensors, return air temperature sensors…

C14-1 DIAGRAM WITH D8 DIAGRAM continued

13- If a second demand does not reach relay K40 within 30 seconds, K40-1 remains closed and time delay DL7 closes at the end of 30 seconds. 14- When time delay DL7 closes, relay K41 is energized. 15- Contacts K41-1 close to lock-in economizer. The economizer remains locked-in until con tacts K42-1…

C14-1 diagram with D5 diagramW973 Control with modulating economizer and warm-up

C14-1 DIAGRAM WITH D5 DIAGRAM

Honeywell W973 Control System and T7067 Thermostat with Modulating Economizer and Warm-up 7-C14-1 Section with D5 Section The Honeywell W973 control, when added to the GCS16 system, allows the use of electronic ramping thermostat, discharge temperature sensors, return air temperature sensors and/or…

C14-1 DIAGRAM WITH D5 DIAGRAM

Enthalpy Low (outside air can be used for cooling): 16- Initial cool demand (voltage ramp from A2 terminal4) closes C1. 17- Enthalpy control A6 has determined that outside air can be used for cooling and has switched 1K and 2K internally. 18- Cooling demand is routed through enthalpy control to…

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