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

SERVICE IN EORMATION

LE Ll Ll OX industries Inc. GCS11 Corp. 823-L3 Litho U.S.A. GCS11-1853/2753 SERIES UNITS FIGURE 1 TABLE 1 — CONTINUED . Model No. onan Option GCSi1-1853 | GCS11.2763 | Availability Gray Exhaust GED11-185 | 6Е011-275 | Mel wnstalied Poe aust РЕО11-185 | PED11-275 оао Roof Mounting RMF 11-185 RMF…

1 - INTRODUCTION

Production of the GCS11-15 and 20 ton models started т early 1982. Figure 1 shows. а unit cutaway and options are given in Table 1. Units are designed for rooftop installation with either bottom or horizontal discharge. The RMF 11-185 ог 275 mounting frames are used for bottom discharge…

A — Specifications (-1 Series Units) Model No. GC$11-1853-300] GCS 11-1853-400] GCS 11-2753-350| GCS11-2753-450 Single Stage Btuh Input 300,000 350,000 Heating Capacity Btuh Output 249,000 aaa 290,500 Natural Gas Only A.G.A. Thermal Efficiency 83% 83% sees Btuh Input (low) 240,000 270,000 Two Stage…

С - Dimensions

E - Burner Ratings

BURNER GAS ОЕ AGA GGA MODEL TYPE INPUT (BTUH) | OUTPUT (BTU) | INPUT (BTUM) | OUTPUT (BTUR) PG3-300 Natural = 300,000 349,000 — _ 6.2000 350,000 290,500 350.000 584.000 PG3-350 Natural 15600-4500 me 315,000 264,600 MAX. | MIN, | МАХ | MIN. | МАХ | мм | МАХ [мм 1Р63-400/240 | Natural or | _0-2000__…

Н - Pressure Curves

J - RMF 11 With Combination Ceiling Supply And Return

К - RMFH11 Horizontal Mounting Frame

RMF H11 HORIZONTAL MOUNTING FRAME A- 2 = _t NOTE. Return aie duct connection № te to unl dimenaion 41 Ing for location and si unit 8 End Supply and Return Air {over and under) Duct Application. 1-13/16 it * Е = 2 ЗЕСТЮМ А-А ch | с о м SUPPLY мА $ OPENING в NAILER STRIP oe F Г (Furnished) 6 5 $ Моде!…

© ” — — М - Power Supply Wiring The power supply entrance panel is located on the front of 6 жене el the unit above the compressor compartment. Power supply TBA ©) ТЕ Е wiring enters through the large conduit knockout. Refer to MAIN [OOOG6) Ss vo Fk) | the GCS11 dimension drawing. The unit rating…

pnd

} р GCS11 LOW VOLTAGE FIELD WIRING (With SSP11 Switching Status Panel) Е | | | ЕР | 1 | } | ee TY] | | р | || № \ и bi | Eff pee Ви | i ОО en ОО ЕЕ atts ТРЕЕ, | pee eee eee ee Н-о 1-0 о Ото» РЕГ! | | ГИ | I ———“—Щ-—ф Hil | Г || РЕКИ ЕЕ, РРР ЕЕ, Ili yy || Г 7 РЕ ЕЕ! = 3 РЕ! i} ty] bly il oly byt || Г…

№ - GCS11 COMPONENTS

Table 2 on Pages11 through 15 list the GCS11-1853 & 2753 Table 2 also lists control setpoints (if applicable). Key number electrical components by their key numbers and then gives a labels aré mounted next to each component for identificabrief description and general location. Figure 6 illustrates…

COMPONENT DESCRIPTION AND FUNCTION | LOCATION | SETTING

. . . Blower B3 Indoor Blower Motor — Provides air supply through unit. Compartment B4 & BS Condenser Fan No. 1 & No. 2 — Draws air across outdoor coil for heat transfer inthe | Compressor _ refrigeration cycle. Compartment B6 Power Saver Motor — Used with the power saver option. Modulates outdoor |…

COMPONENT. DESCRIPTION AND FUNCTION LOCATION SETTING

Limit Blower Relay — Energizes K1 to start blower motor. When de-energized, it Main K3 . Control — drives power saver motor Вб closed. Box . Return KA Exhaust Fan Relay — Energizes exhaust fan motors B9, B10 & B11 when the ex- Air вой haust fan switch 58 is closed and the main blower is operating.…

COMPONENT. DESCRIPTION AND FUNCTION LOCATION SETTING

Blower Control Relay — К23 М.О. contacts close to energize K27 coil. When the Main * K27 unit is on intermittent blower operation K27 contacts energize K3 relay to operate Control soon the blower during power saver operation. Box Damper Relay — Used with motor driven outside air dampers only. K32…

GCS$11

COMPONENT DESCRIPTION AND РИ LOCATION SETTING $9 No. 1 Low Pressure Switch — Shuts off compressor (81} control circuit when suc-| Compressor 25 + 5 psig - Out tion pressure drops below setpoint. Automatically resets. Compartment 55 + 5 psig - In $10 No. 2 Low Pressure Switch — Shuts off compressor…

А - Мат control Вох

Figure 7 identifies the components in the main control box. Note that DL7 and the Status Panel Relay Interface Board are used only when either the SP11 or SSP11 status panel is applied with the unit; these are field installed items. The control box contains JP4 and JP5 wiring harnesses that plug…

С - Compressor Compartment (Figures 8 & 9)

Figures 8 and 9 show the compressor compartments for the GCS11-1853 and the GCS11-2753 units respectively. 1 - The 1853 units use one 5 ton compressor and one 10 ton compressor for 3 stages of cooling: Stage 1 - Compressor 1 only operating, 5 tons cooling. Stage 2 - Compressor 2 only operating, 10…

SUCTION LINE

GAUGE PORT JP3 FOR LOW ` AMBIENT KIT GAUGE PORT LOW PRESSURE SWITCH $10} CUT OUT 25 + § PSI CUT IN 55 +5 PSI p--— — HIGH PRESSURE SWITCH ($2) CUT OUT 410 + 10 PSI MANUAL RESET CONDENSER FAN MOTOR CAPACITORS (C1) 9 CRANKCASE HEATERS. {2} 50 WATT Low — AMBIENT SUCTION LINE — GCS11-2753 COMPATSSOF…

(LLY) HOSNIS

ШУ JDYVHOSIC Y3DNVHOXS LV3H 2х AINO 5ИМП #822 A Ze 22% Fa awn {75} 1OH¥.LNOO LIA лима NOLLOAS L3H 30 Hvay 93199071 ($$) 10314095 LIWIT АНУИИЗУЯ 5681-11599 - 310М VW $миза 33$ oO TANVd 1S3A д, s 131599 YANHNG (АЛМО SLINN 13) (AINO $ ИМП IHW) \ HOLIMS 330$$33а MOT HOLIMS 3YNSS3¥d HOIH YHOSN3S ШУ…

ATaWassy NOLLJANNOD

MANIFOLD

PRESSURE — | MAIN SOLENOID TAPS \ GAS VALVE GV1 REDUNDANT MAIN SOLENOID GAS VALVE GV2 REGULATOR — INLET La MANUAL MAIN GAS VALVE ‘\_ MANUAL PLOT GAS VALVE PILOT REGULATOR PILOT SOLENOID GAS VALVE PV PG3-300A.G.A. PG3-350 А.С.А. PG3-350 С.С А. FIGURE 13 MANIFOLD PRESSURE TAPS ORIFICE NIPPLE - USED…

Е - Blower Compartment 2 - Table 3 lists the drive kit options

Figure 16 is a rear view of the 2753 unit showing the blower Note - Maximum usable hp of motors furnished by Lennox are compartment. Refer to the cutaway, Figure 6, for a front view shown in table. If other motors of comparable hp are used be of the blower compartment. sure to keep within the…

the chart, first check suction pressure, then move over to

the outdoor temperature and finally down to the discharge pressure. If the discharge pressure is within five pounds of this reading, the unit is properly charged, providing the three conditions meet in the unshaded area of the chart. if they meet in the shaded area, there is some- GCS11 thing wrong…

С - РСЗ Power Burner

The РСЗ burner is available in four sizes as indicated in the burner rating table on page 5. The PG3-300 and PG3-350 models are characterized by a low temperature rise. The PG3-400/240 and PG3-450/270 models are two staged. These PG3 burners use an intermittent pilot system with flame proving to…

CLEAN HEAT

‚‚-- EXCHANGER TUBES ; REAR BREECHING FLAME OBSERVATION PORT GASKET FIGURE 20 G - Primary Control The GCS11-1853 and 2753 units use proof-of-flameintermittent pilot ignition controls. The A.G.A. and C.G.A. units use a Fenwal 05-143 contro! board as the standard ignition system. FM/IRI units only use…

combustion air switch power is applied to the primary

control. The control begins a 90 second prepurge cycle followed by a 10 to 12 second trial-for-ignition (opening pilot valve and energizing T6 ignition transformer). When the pilot flame is established and proven by flame rectification, T6 ignition transformer is de-energized. The flame and sensor…

A =

41-318 | SPARK GAP ЕМЗЮМ “A” Noo" bel aig ЗЕЕ ОМ NWA \ | 1-118" =a 4 р 58” 18" te] = =z @|... |lol © № BOTTOM BOTTOM IGNITION LEFT RIGHT ELECTRODE | q Ф SENSOR IGNITION CONTROL DIM. “А” ELECTRODE FIREYE 116” FENWAL 118” HONEYWELL 1/16" [Ш SECTION А-А А WARNING: ELECTRODES MUST ВЕ POSITIONED AS SHOWN…

The combustion air is factory set for normal operation. Minor

changes in the air adjustment may be necessary to compensate for the heating value of the gas. A combustion air adjustment shutter is provided on combustion blower. Loosen lockscrew and move jever to desired position. See Figure 25. For efficient operation keep combustion air blower wheel clean.…

MOTOR

PULLEY AND BELT ADJUSTMENT _ SLIDE MOTOR BRACKET | RIGHT OR LEFT TO ADJUST TENSION LOOSEN LOCKING BOLTS ge BLOWER WHEEL PULLEY ADJUSTMENT 1- LOOSEN ALLEN SCREW 2 - TURN PULLEY CLOCKWISE TO INCREASE SPEED: TURN PULLEY COUNTER CLOCKWISE TO DECREASE SPEED. FIGURE 26 The fan switch manually sets to…

2 - The enthalpy control is located in the outdoor air inlet of

unit. М senses the total heat content of the outside air including latent heat. If the heat content rises above control setpoint, the power saver dampers drive to minimum position. The recommended set point is “А” as shown in Chart A. If power saver is allowing air which is too warm or humid to…

HUMID CLIMATE OPTION fal поля

GCS11-1853 & 2753 SERIES Sr и "О подле panel 2 & Wire removed from rerminal No. 2 of enthalpy controt. 8 ОЕ New Retay ое ar Equivalent} р 1 4 | р | | р 1 р i р р | 1 wi a г ры | ye © зан D Г Fane ф 4 control ia (GOLD), we le removed from | + 1! terminal No. 1 of 1@! ‘enthalpy control 177 ue (B)Wire…

В - Gravity & Power Exhaust Dampers

On GCS11 applications including a power saver, gravity or power exhaust dampers may be used for system pressure relief. The dampers are mounted in the tower half of the return air section, Refer to the dimension drawings and figures 6 and 27 for location. When a horizontal discharge mounting frame…

TABLE 10

Return Air Duct Static Pressure Damper Blade [от fomm)_|_25" (6mm) | _S” (13mm) ы Р5011 JOAD11 Psp11]0a011 Р5О11 | OAD11 5° 13% | 12% | 20% | 18% | 30% | 27% 10° 15° 20° 25° 30° 35° 40° 90 45. 47. OAD11-185/275 FRESH AIR DAMPER ASSEMBLY FIGURE 33 О - Low Ambient Kit This kit allows cooling operation…

The amount of heating setback or cooling setup is determined by separate resistors located on the low voltage terminal block, see Figure 35. The resistor can be substituted according to Table 11 to obtain the desired setting. Substitute resistors must be within 10% tolerance. If a field supplied…

2 - Wiring

Application of either the SP11 or SSP11 to the GCS11-1853 and 2753 series requires addition to the unit of an Electric Control Kit (includes a relay interface board and delay relay). The relay interface board is shown in Figure 38. It mounts and connects with two plug in harnesses in the main…

IX - FIRESTATS

Some local codes may require the installation of supply air and return air firestats to automatically shut down the equipment at excessive temperatures. These field provided firestats must be mounted and wired per local codes. Manual reset type controls must be accessible, Figure 41 is the…

Х - GENERAL SCHEMATIC INFORMATION

1 - The unit schematic wiring diagram format incorporates horizontal power lines separating line voltage motors, compressors and electric elements (below the lines) from the. control. circuit {above the lines). 2 - The graphic symbols for components and code lettering used are recommended by the…

NOTE - WIRING TO LOW VOLTAGE TERMINAL STRIP

GCS$11

GCS$11 WITH SSP11 SWITCHING STATUS PANEL AND POWER SAVER № wimout powen saven У мтн POWER SAVER МЕРИ, ат отлов pane. netay ГО “STAMDAND,ON СОА UNITE ONLY у | ae . 1a г пати нал томам, wim | 1 < i SWITCHING BYATUS PANEL, ft 1 a т | В т i ' L__~_ Le MOTOR DRIVEN OUTSIOE ‘AIR DAMPER ONLY (3 POSITION…

NOTE WIRING TO LOW VOLTAGE TERMINAL STRIFE

GCS11 WITH SP11 STATUS

PANEL AND POWER SAVER ZA мтноот powen saven AY wit POWER SAVER aay suerte stayus pane. neva Г т INTERFACE BOARD | fad ‘ 1 асе HOARD! | | STANOAAD OW CGA UMN ая Od] status Pane. tenMina, star MOTOR ORIVEN OUTSIDE AIR DAMPER ONLY (3 POSITION MOTOR} нерв JORANGE-Z30¥ LACK COM he eS ly $ ey “nab В way…

A - GCS11-2753 Operation Flow Chart - Figure 44 This chart is used to show the омега! unit functions required to supply power and control blowers, compressors, fans, gas valves and other components in the system. The chart is keyed by number to the following description of operating characteristics.…

GCS$11-2753 OPERATION FLOW CHART

govac CONTAOL HEATH TRANSFORMER CONTROL TRANSFORMER Та0УАС. 24VAC OISCHARGE aI зв SENSOR COMPRESSOR MONITOR 2AVAC TO кб, K7 sa ADJ 20307 К, R23, K27 & OLY RTT 55 ф LIMIT NORMAL” \LIMIT NORMAL (7) Та. REMOTE SENSOR TRANSMITTER ra Е = Eee 28 VAC DISCHARGE ag 8 я a wn т POWER SIGNAL ae ar — = 2 alk…

ХИ - MAINTENANCE

А - Lubrication Always relubricate motors according to manufacturer’s lubrication instructions on each motor. If no instructions are provided, use the following as a guide: 1 - Indoor Blower Motor Bearings - Bearings are prelubricated. For extended bearing life, relubricate at least once every two…

ХИ - TROUBLESHOOTING

Many problems can be determined at the unit low voltage junction box by making AC and DC voltage checks or using the SA11 Service Analyzer or both. The main control box is adjacent to the junction box allowing easy access for high voltage checks. Before condemning any components, be sure all…

panel relay interface board installed п the main control box. If the

unit is used with the SP11 ог SSP11 the board will be in place and all checks can be made at the low voltage terminal strip. If the unit does not use the SP11 or SSP11 alternate high voltage checks can be made in the main control box (or a status panel relay board can be temporarily plugged in and…

СС$11

The $А11-2 Adaptor Kit Lennox Part Number is LB-50691. It consists of JP6 and JP8 prewired jack plugs. The female jacks have wires with eyelets for connection to the 50 pole terminal strip. The male plugs have wires with stripped ends for connection to the low voltage field wiring as it is removed…

С - Initial Start-up Check For Fenwal 05-143 Proof

of Flame System On New Units & Replacement Boards Test Fenwal baards using the procedure below. Removal of the flame sensor wire from the board is not an accepted testing method for toss of flame tests. 1 - Set thermostat for a heating demand. 2 - Turn on gas to unit. 3 - Turn on power to unit.…

voltage to ground following unit purge delay. The neutral leg 12

should read zero voltage to ground. If readings are reversed, switch the input leads to insure correct polarity. Do not apply power to input terminals unless electrode assembly is properly grounded and connected. The control board may be damaged if electrode assembly is not correctly connected. 3…

Refer to Figure 50 to perform the following checks

1- AC Voltage Checks With the cover of the control rernoved, test points on the chassis can be used. The test points identified correspond to the wiring terminals on the subbase and the unit schematic wiring diagrarn. a - Read 120VAC between test point по. 2 (neutral) and по. 3 when pilot valve is…

Е - Compressor Protection Module Checkout

016 оп 1853 units; 015 & DL6 on 2753 units The compressor protection module used with the 10 ton Tecumseh compressors may be checked in or out of the unit circuitry. The module cannot be repaired or adjusted and must be replaced if defective. Checkout of the interna! compressor sensors is also a…

3 - Out of Unit Checkout Procedure

Figure 51 gives the test circuit hookup and checkout procedure for bench testing of the compressor protection module. If the module is removed from equipment for testing be sure to check compressor sensor resistance after compressor has cooled as in Section 2 - Field Checkout Procedure. TO 230VAC Г…

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

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