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DMS Saber Roof Top Packaged
Air Conditioners 30 to 50 TR

Whenever you need air conditioning, the York name

assures you of the highest standards of design,

quality and reliability.

Our experience of more than

130 years in designing and

manufacturing products

aimed primarily at satisfying

air conditioning, heating,

ventilation and refrigeration

requirements, gives us a

unique insight into designing

products that match your

exact requirements.

We're providing solutions for

today's most critical concerns

- energy efficiency, refrigerant

alternatives and indoor air

quality. York has a wide range of product choices for

residential and light commercial applications.

Our offering includes package &

split air conditioners and heat

pumps. In addition, York offers

chillers, air handling units,

ventilation equipment and controls

for larger projects.

Our

'Cutting Edge

Technology'

is leading the way in

developing efficient and

environment friendly solutions for

your homes, offices and places of

leisure.

Let us create the ideal environment

for you.

JCI - York international provide

comfortable environments

wherever you

Live, Work or Play

York products are available from :

Due to continuous product development, we reserve the right to change in part or in

whole, the specifications without prior notice

Installation, Operation & Maintenance

Manual IOM # 036-1011(0806)

60 Hz

Содержание DMS 360 Series

Страница 1: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 27 NOTES ...

Страница 2: ...Installation Operation Maintenance Manual IOM 036 1011 0806 60 Hz ...

Страница 3: ...imit switch 19 Freezestat 19 Low ambient cooling 19 Safety controls 19 Compressor protection 19 Flash codes 20 Reset 20 Electric heating sequence of operations 20 Heating operation errors 20 START UP Restart check list 20 Operating instructions 20 Post start check list 20 Shut down 21 Belt drive blower 21 TROUBLE SHOOTING Cooling trouble shooting guide 21 Unit flash codes 25 MAINTENANCE Every mont...

Страница 4: ...hing cloth and have a fire extinguisher available for all brazing operations INSPECTION As soon as a unit is received it should be inspected for possible damage during transit If damage is evident the extent of the damage should be noted on the carrier s freight bill RENEWAL PARTS Refer to York USER S MAINTENANCE and SERVICE INFORMATION MANUAL It is strongly suggested that only genuine YORK Spare ...

Страница 5: ...available to the consumer and with instructions to retain them for future reference LIMITATIONS These units must be installed in accordance with the applicable national and local safety codes Refer to Unit Application Data table If components are to be added to a unit to meet local codes they are to be installed at the dealer s and or the customer s expense Size of unit for proposed installation s...

Страница 6: ...provisions for adequate ventilation air in accordance with applicable provisions of the local building codes Refer to Dimensions and Clearances Refer Figure 8 for the clearances required for servicing and proper unit operation DUCTWORK A closed return duct system should be used This should not preclude use of outdoor fresh air intake The supply and return air duct connections at the unit should be...

Страница 7: ...e threads Install a condensate drain line from the one inch FPT female connection on the unit to an open drain NOTE The condensate drain operates in a negative pressure in the cabinet The condensate drain line MUST be trapped to provide proper drainage See Figure 4 FIGURE 4 RECOMMENDED DRAIN PIPING FIGURE 5 LOADING POINTS FIGURE 3 FIXED OUTDOOR AIR DAMPER ...

Страница 8: ...tings and ready for operation the tabulated rating with a short circuit capacity of 10K or more for the unit The switch must be separate from all other circuits Wire entry at knockout openings require conduit fittings to comply with local codes Refer to the Dimensions and Clearances Figure 7 for installation location If any of the wire supplied with the unit must be replaced replacement wire must ...

Страница 9: ... units are properly phased at the factory Check for proper compressor rotation If the blower or compressors rotate in the wrong direction at start up the electrical connection to the unit is mis phased Change the incoming line connection phasing to obtain proper rotation Scroll compressors operate in only one direction If the scroll is drawing low amperage has similar suction and discharge pressur...

Страница 10: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 9 PRODUCT DATA TABLE 4 PRODUCT DATA ...

Страница 11: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 10 DIMENSIONS AND CLEARANCES FIGURE 7 DIMENSIONAL DATA AND CLEARANCES ...

Страница 12: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 11 DRIVE AND PULLEY DATA TABLE 5 DRIVE AND PULLEY DATA ELECTRICAL DATA TABLE 6 ELECTRICAL DATA ...

Страница 13: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 12 ELECTRICAL DATA TABLE 6 ELECTRICAL DATA ...

Страница 14: ...Installation Operation and Maintenance Manual 036 1011 0806 Page 13 TABLE 7 FAN PERFORMANCE DATA ...

Страница 15: ...anual 036 1011 0806 Page 14 ADDITIONAL PRESSURE DROPS FIGURE 8 PRESSURE DROPS DUE TO OPTIONS The additional pressure losses should be calculated from the graph and ADDED along with the ESP External Static Pressure to calculate fan performance ...

Страница 16: ...ta Table 5 WARNING FAILURE TO PROPERLY ADJUST THE TOTAL SYSTEM AIR QUANTITY CAN RESULT IN EXTENSIVE BLOWER DAMAGE SAFETY This section of the IOM covers Safety Aspects applicable to the York DMS Saber Roof Top Air Conditioners Adherence to the instructions detailed hereunder will ensure the safety of the operators prevent damage to the equipment and prevent accidents FIGURE 10 UNIT NAMEPLATE TERMIN...

Страница 17: ...gs and signs regarding the units must be absolutely observed STAFF TRAINING The unit should be started up and serviced routine and corrective maintenance by authorized and trained staff only This staff must be informed about possible hazards regarding Electrical connections Piping connections Duct connections Start up These operations must be executed only by trained persons who on behalf of the u...

Страница 18: ... Page 17 personnel of the commonly recognized dangers associated with this equipment In addition to following the manufacturer s installation instructions care must be taken to ensure compliance with federal state and local rules regulations codes and standards ...

Страница 19: ... completion of a call for cooling Heating always takes priority COOLING SEQUENCE OF OPERATION CONTINUOUS BLOWER By setting the room thermostat fan switch to ON the supply air blower will operate continuously INTERMITTENT BLOWER With the room thermostat fan switch set to AUTO and the system switch set to either the AUTO or HEAT settings the blower is energized whenever a cooling or heating operatio...

Страница 20: ...ctive the condenser fans will be de energized FREEZESTAT During cooling operation if a freezestat opens the UCB will de energize the associated compressor initiate the ASCD and if the other compressor is idle stop the condenser fans If the call for cooling is still present at the conclusion of the ASCD the UCB will reenergize the halted compressor Should a freezestat open three times within two ho...

Страница 21: ...le 11 SAFETY CONTROLS The unit control board monitors the temperature limit switch of electric heat units The control circuit includes the following safety controls Temperature Limit Switch AUTO This control is located inside the heater compartment and is set to open at 120 F It resets automatically The limit switch operates when a high temperature condition caused by inadequate supply air flow oc...

Страница 22: ...l any thermostat calls and set the fan switch to AUTO Wait for the internal overload to reset Test again when cool 5 If blower contactor is not pulled in check for 24 volts at the contactor coil If 24 volts are present but it is not pulled in replace the contactor 6 Failing the above if there is line voltage supplied at contactor and it is pulled in and the supply air blower motor still does not o...

Страница 23: ...room thermostat fan switch is in the AUTO position 1 Compressor 2 will not energize simultaneously with compressor 1 if a call for both stages of cooling is received The UCB delays compressor 2 by 30 seconds to prevent a power surge If after the delay compressor 2 does not energize on a second stage call for cooling check for line voltage at the compressor contactor 2 and that the contactor is pul...

Страница 24: ...oom thermostat and the UCB Loose wiring from the room thermostat to the UCB 7 If 24 volts is present at the UCB Y3 terminal the compressor may be out due to an open high pressure switch low pressure switch or freezestat Check for 24 volts at the HPS3 LPS3 and FS3 terminals of the UCB If a switch has opened there should be a voltage potential between the UCB terminals e g if LPS3 has opened there w...

Страница 25: ...g and in low ambient conditions These options are not enabled by default Local distributors can test the UCB for this programming 11 If none of the above corrected the error test the integrity of the UCB disconnect the C4 terminal wire and the jumper it to the Y4 terminal DO NOT jump the Y4 to C4 terminals If the compressor engages the UCB has faulted 12 If none of the above correct the error repl...

Страница 26: ...minal wire and jumper it to the Y1 terminal DO NOT jump the Y1 to C1 terminals If the compressor engages has faulted 13 If none of the above correct the error replace the UCB TABLE 11 UNIT FLASH CODES UNIT FLASH CODES Various flash codes are utilized by the unit control board UCB to aid in troubleshooting Flash codes are distinguished by the short on and off cycle used approximately 200 ms on and ...

Страница 27: ... 10 mm to 13 mm when pressed lightly with a finger Every Six Months In addition to the maintenance done every three months The condenser coils should be cleaned by spraying water over it at low pressure or with a brush while ensuring that the fins are not damaged Check all electrical connections and tighten them if required Clean all accessible electrical panels of dirt and dust Before cleaning th...

Страница 28: ... has a wide range of product choices for residential and light commercial applications Our offering includes package split air conditioners and heat pumps In addition York offers chillers air handling units ventilation equipment and controls for larger projects Our Cutting Edge Technology is leading the way in developing efficient and environment friendly solutions for your homes offices and place...

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