Gas-Fired Rooftop. Models YCD 060, 075, 085, 100, 120, 150 ...

1 Gas-Fired rooftop YCD/YCH : 060-075-085-100-120-150-175-200-250 With gas heating module : G150-G205-G250-G350-G400- marked Installation - Operation - MaintenanceTo be used in conjunction with the UCP2 module 's manual, reference L80 GE 001 IM002E2 These Installation Operation and Maintenance instruc-tions are given as a guide to good practice in the instal-lation, start-up, operation and periodic maintenance bythe user of do not contain the full service procedures necessa-ry for the continued successful operation of this equip-ment. The services of a qualified service technicianshould be employed, through the medium of a mainte-nance contract with a reputable service is based on the general terms and conditionsof the constructor. The warranty is void if the equipmentis modified or repaired without the written approval ofthe constructor, if the operating limits are exceeded, or ifthe control system or the electrical wiring is due to misuse, lack of maintenance, or failureto comply with the manufacturer's instructions, is notcovered by the warranty the user does not conform to the rules of chapter"Maintenance", it may entail cancellation of warrantyand liabilities by the arrival, inspect the unit before signing the deliverynote.

2 Specify any damage on the delivery note, and senda registered letter of protest to the last carrier of thegoods within 72 hours of delivery. Notify the local salesoffice at the same unit should be totally inspected within 7 days ofdelivery. If any concealed damage is discovered, send aregistered letter of protest to the carrier within 7 days ofdelivery and notify the local sales are shipped with the refrigerant operating or hol-ding charge and should be examined with an electronicleak detector to determine the hermetic integrity of theunit. The refrigerant charge is not included in the stan-dard Warranty this manualCautions appear at appropriate places in this instructionmanual. Your personal safety and the proper operationof this machine require that you follow them carefully.

3 The constructor assumes no liability for installations orservicing performed by unqualified the unitThese YCD/YCH units are assembled, pressure tested,dehydrated, charged and run tested before information contained in this manual applies tounits designated units are designed to operate in cooling modeonly, whereas nom de l'unit can operate in cooling orheating informationThe refrigerant provided by the constructor meets all therequirements of our units. When using recycled or repro-cessed refrigerant, it is advisable to ensure its quality isequivalent to that of a new refrigerant. For this, it isnecessary to have a precise analysis made by a speciali-zed laboratory. If this condition is not respected, theconstructor warranty could be American Standard Inc.

4 Control sensor of the unit on the drain increase belt controlled by controlled by controlled by tracker of accessories installed on pipework principles of the gas heating the Gas-Fired heating module into the measured partial vacuum is to gases mode start-up and mode start-up and filter installation skeleton by by 1 : Units equipped with gas heating modules, CE moduleSales referenceG150G205G250G350G400 Rooftop air-conditionerGas module heating capacity kW PCI (output %)50 Hz EEC VoyagerG2026,0 (88%)41,4 (92%)49,1 (91%)70,6 (90%)77,4 (91%)G2522,8 (86%)35,0 (92%)38,3 (89%)59,4 (88%)60,3 (90%)G3124,4 (87%)37,7 (92%)48,6 (90%)57,3 (88%)78,2 (92%)YC* * * * * * * * * * * * * * * * = "H" for horizontal air discharge ; "D" for vertical downflow air Control featuresSelf-test/Auto-configurationAt power-up, the system will perform a series of tests to veri-fy correct operation and configure itself automatically,based on the unit control wiring.

5 This means there is no fieldconfiguration necessary when replacing the UCP, except forthe zone comfort switch minimum ON/OFF timesTo enhance compressor reliability, a minimum of 3 minutesON/OFF time has been implemented in the software. Anytime power is applied or re-applied ( after a power fai-lure), the 3 minutes minimum OFF time is enforced to pre-vent short cycling a sensor operationThe zone sensors provide the user controls and zone tem-perature sensing function. The operator controls are as fol-lows :1) Unit modeHEAT : Heat functions only enabledAUTO : Auto-changeover between cooling mode andheating mode as required by zone :No heating or cooling functionsCOOL : Cooling functions only (including economi-zing option) enabled2) Fan settingsFAN AUTO : Fan settingsFAN ON : Fan runs at all times.

6 This is the settingused when minimum ventilation is requi-red. When the fan is running, the econo-mizer dampers (option) will be open toat least the minimum ) Optional remote panel zone sensorsIndicator lights :SYS ON : Indicates that power is applied to the unit andthe UCP is functioning correctly. This indi-cator will flash at a 1 second rate to indicateoperation is in one of the test : Indicates that at least one stage of heat is ON. Thisindicator will flash at a 1 second rate toindicate a heat : Indicates that cooling is active. This could beeconomizing and/or compressor indicator will flash at a 1 second rateto indicate a cool failure. Sources of coolfailure include high pressure controls ifpresent and zone sensor : Indicates that a problem exists in the supplyair stream.

7 Could be dirty filters, brokendrive belt or other functions depending onwhat sensors or switches are installation onthe fan/filter status ) Test mode procedure at the UCP control boardOperating the unit from the roof using the test mode atthe UCP control : When operating the unit in the test mode, theevaporator access panel and the control box cover, mustbe closed. Failure to ensure that the evaporator accesspanel and control box cover is in place could result insevere personal injury or 3 : Resistance values chartStepModeOhms1 Fan On2,2 k2 *Economizer3,3 k3 Cool 14,7 k4 Cool 26,8 k5 Heat 110 k6 *Heat 215 k7 *Heat 322 k8 **Defrost33 k9 **Emergency Heat47 k* : With optional accessory** : With heat pumpsTable 2 : Test mode YCD/YCH 060 to 250 StepModeFanEconCool 1 Cool 2 Heat 1 Heat 2 Heat 3 DefrostEm Heatd'urgence1 Fan OnOnMinOffOffOffOffOffOffOff2 * 1 OnMinOnOffOffOffOffOffOff4 Cool.

8 2 OnMinOnOnOffOffOffOffOff5 Heat 1 OnMinOffOffOnOffOffOffOff6 *Heat 2 OnMinOffOffOnOnOffOffOff7 *Heat 3 Not applicable on gas/electric units8 **DefrostNot applicable on gas/electric units9 **Em HeatNot applicable on gas/electric unitsThe Unitary Control Processor (UCP) has a red indicator lightin the lower left corner. When power is applied to the unitthe light will glow if the UCP is functioning correctly. If thesystem is placed in the test mode the light will blink : The control box cover has a small peep hole,located in the lower left hand corner. The red indicatorlight on the UCP can be seen through this peep hole. Donot remove the control box cover while the unit poweris test mode-The step test mode is initiated by shorting across the"TEST" terminals, marked test 1 and test 2 on the unit'slow voltage terminal strip (LTB), for two to three secondsand then removing the the test mode is initiated, the light on the UCP willblink and the system will begin the first tets step (seetest mode table 2).

9 -To continue to the next step, reapply the short acrossthe test terminals for 2 to 3 unit may be left in any test step for up to one allowed to remain in any test step for more than onehour, the test mode will terminate and control will revertto the zone sensor. As you continue to apply and remo-ve the short across the test terminals, the unit will movethrough the steps according to the table terminate the test mode, cycle the unit power at theunit disconnect or continue stepping through the modesuntil the UCP's indicator light glows test mode-The auto test mode is initiated by installing a jumperbetween terminals marked TEST 1 and TEST 2 on theLTB. The unit will start step 1 and cycle through the teststeps one time, changing every 30 the test mode is initiated, the light on the UCP willblink and the system will begin the first test step, andturn on the indoor fan (see test mode table 2).

10 -At the end of the auto test mode, the indicator light willglow constantly and control will revert to the zone unit can be left in any one of the test steps, by remo-ving the jumper. It will remain in this step for up to onehour. If allowed to remain in any test step for more thanone hour, the test mode will terminate and control willrevert to the zone the test mode is to be started again, cycle the unitpower and reapply the terminate the test mode, cycle the unit power at theunit test mode-The resistance test mode is initiated by applying theappropriate resistance value across the "Test" terminalsmarked TEST 1 and TEST 2 on the the test mode is initiated, the light on the UCP willblink and the system will begin the test step selected bythe resistance being applied across the test terminals(see test mode table 2).