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York D7CG 060 manual

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Table of contents for the manual

  • Page 1

    GENERAL YORK M odel DCG uni ts ar e sin gle pack age ai r co ndit ione rs with ga s heat desig ned fo r outd oor in stal lati on on a roof top or a slab . The units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electrical wiring is factory-installed and tested. The units require only electri[...]

  • Page 2

    Gene ral ... .... .... ...... .......... .......... .......... .......... .......... .......... ... 1 Inspe ction.......... .......... .......... .......... .......... .......... .......... ....... 1 Refere nce ..... .......... .......... .......... .......... .......... .......... .......... . 1 App rovals ..... .... ...... ...... .... ...... ....[...]

  • Page 3

    LIMIT A TIONS These unit s must be instal led in a ccor dance w ith th e curren t editi ons of the follo wing na ti onal and loc al safet y codes: In the U. S.A.: 1. Natio na l Elec tr ical Code ANSI /N F P A No. 70. 2. Nationa l Fu el Ga s Cod e Z223 .1. 3. Ga s-Fi red Ce ntral Fu rnac e Stand ard AN SI Z21. 47-199 3. 4. Loca l ga s ut il ity requ[...]

  • Page 4

    The supply and return air duct systems should be designed for the CFM and static requirements of the job. They should NOT be sized to match the dimensions of the duct connections on the unit. CAUTION: When fastening ductwork to the side duct flanges on the unit, insert the screws through the duct flanges only . DO NOT insert the screws through the [...]

  • Page 5

    DISCONNECT SWITCH BRACKET FOR UNITS WITH OPTIONAL BEL T -DRIVE BLOWER A specia l brac ket for m ount ing a fiel d-su pplied disconnect swit ch is provid ed in ea ch unit ordered w ith an optional belt -drive supply air bl ower . The brac ket is ship ped ins ide t he blowe r com par tment taped to t he top o f the blowe r ho usin g. Inst al l t he b[...]

  • Page 6

    The he ating v alue of the gas may differ with localit y . Th e value shou ld be ch ec ke d with the loca l gas utilit y . NOTE : T here may be a lo cal gas ut ility re quireme nt spe cify ing a mini mum diam ete r fo r gas pipi ng. All uni ts requi re a 1/2 inch p ipe connec tion at the en trance f itti ng. GAS CONNECTION The ga s sup ply lin e ca[...]

  • Page 7

    VENT AND COMBUSTION AIR HOODS The ve nt and co mbust ion air ho ods are sh ipped at tach ed to the blowe r housing in the blo wer compar tment. These ho ods must be inst alled on the o utside of the gas heat a c ces s pane l to ens ure proper unit functi on. The ne cessary mo unting sc rews are pro vided in a bag a l so attach ed to th e blow er ho[...]

  • Page 8

    NOTE : I nsta ll f ilters so that “ Air F low” a rrows poin t towa rd the unit . 8. Inst all filt er cover ove r the en d of the hood with o ne scre w (cen t er of ho od ), sec urin g filter s into po s itio n. CAUT ION: When pr oceedi ng wi th St eps 9 a nd 10 , extre me care mu st be exer cised w hil e turni ng bo th th e set point an d minim[...]

  • Page 9

    FIG 8 - CENTER OF GRA VITY APPROXIMATE CENTER OF GRAVITY FRONT 48-11/32 21 32-1/8 15-1/4 82 1 ⁄ 4 “ X 44 7 ⁄ 8 “ CONDENSER COIL END BACK CORNER C CORNER D CORNER B CORNER A Y DIM. 3-5 TO N 6 T ON Y 19-3/4" 22 " X 40-3/4" 44 " MODELS UNIT SIZ E 036 048 060 072 EV AP . BLOW ER CENTRIFUGAL BLOWER (Dia. x Wd. in.) F AN MOTOR[...]

  • Page 10

    - SUPPL Y AI R PERFORMANCE - 3 & 4 T on w/ Bel t- Dri ve Bl ower T ABLE 8 UNIT SIZE AIR FLOW CFM Available External Static P ressure - IWG* 0.20 0.30 0.40 0.50 0.60 0.70 0.80 RPM Watts RPM W atts RPM W atts RPM W atts RPM W att s RPM W att s RPM W atts 036 2000 843 860 880 925 919 1005 956 1065 993 1 145 1030 1 195 1067 1235 1900 817 775 854 85[...]

  • Page 11

    UNIT SIZE AIR FLOW CFM Available External Static P ressure - IWG* 0.20 0.30 0.40 0.50 0.60 0.70 0.80 RPM Watts RPM W at ts RPM Watts RPM W at ts RPM Watts RPM W atts RPM Watts 072 3200 1 150 2325 1 182 2425 1212 2525 - - - - - - - - 3000 1 100 2010 1 129 2090 1 157 2150 1 185 2225 1215 2290 1242 2360 - - 2800 1045 1700 1074 1780 1 102 1850 1 131 19[...]

  • Page 12

    OUTD OOR TEMPERA TURE, ° F SUPERHEA T A T SCROLL COMPRESSOR SUCTION, ° F , AIRFLOW = 400 CFM /T ON INDOOR WB TEMPERA TURE, ° F 55 57 59 61 63 65 67 69 71 73 75 65 25.6 26.8 28 29.2 30.4 31. 6 32.8 33.3 33.9 34.4 34.9 70 20.1 21.7 23.3 24. 9 26.5 28.1 29.6 30. 6 31.5 32.4 33.4 75 14.6 16.6 18.5 20. 5 22.5 24.5 26.5 27. 8 29.1 30.5 31.8 80 9.0 1 1[...]

  • Page 13

    OUTD OOR TEMPERA TURE, ° F SUPERHEA T A T SCROLL COMPRESSOR SUCTION, ° F , AIRFLOW = 400 CFM /T ON INDOOR WB TEMPERA TURE, ° F 55 57 59 61 63 65 67 69 71 73 75 65 15.2 18.0 20.9 23. 7 26.5 29.3 32.1 33. 4 34.7 36.0 37.3 70 1 1.9 14.9 17.8 20. 8 23.7 26.7 29. 6 31.0 32.4 33.8 35.3 75 8.6 1 1.7 14.8 17. 9 21.0 24.1 27. 2 28.7 30.2 31.7 33.2 80 5.2[...]

  • Page 14

    DUCT COVERS - Units are shipped with all air duct openings covered. For side duct applications; 1. Remove and discard the supply and ret urn air duct covers. 2. Connect duct work to duct flanges on the rear of the uni t. For bottom duct applicat ions; 1. Remove the si de supply air duct cover to gain access to the bottom supply ai r knockout panel.[...]

  • Page 15

    COOL ING SYSTEM The c ooli ng sec tion is a c omple te fact ory pac kage utiliz ing a n air-cooled condenser . The system is factory-charged wi th Refr igeran t-22. The scrol l com pres sor is her metically seale d and inte rnally sprun g. Th e scrol l compressors have inherent (internal) prot ection. I f there is an a bnormal temper ature rise in [...]

  • Page 16

    The limit switch operates when a high temperatur e con dition , caus ed b y inad equate sup ply air flow , occ urs shut ting down the igni tion co ntro l and cl osing t he mai n gas valve. 2. Cent rifu gal Swit ch (CS -36). I f the dr aft moto r sho uld fai l, th e centrifugal switch attached to the shaft of t he m otor preve nts the ignit ion cont[...]

  • Page 17

    PILOT CHECKOUT The pil ot flame sh ould enve lope 3/8 inches of the end of t he flam e sens or . R efe r to Fi gure 12. T o adju st pilo t fla me, (1) rem ove pi lot ad just ment cove r scre w , (2) adjus t the s crew for the pr oper pi lot f lame, (3) be su re to re plac e cov er scre w afte r adjus tment to pr event poss ible g as l eakage . Put [...]

  • Page 18

    evapor ator coil ma y vary gre atly , meas urin g th e pr essure drop across a w et coil un der field cond itions woul d be inac curat e. T o ass ure a dry co il, th e scroll compre ssors should be de-ene rgized wh ile th e test i s bein g ru n. 4. Knowin g the pre ssure dr op across a dr y coil, th e actual CFM throug h the unit can be d etermin e[...]

  • Page 19

    NORMAL MAINT ENANCE CAUT ION: Prior to any of th e follo wing ma intena nce p roce- dures , sh ut off all pow er to t he unit to prev ent person al i njur y . Periodic maintenance normally consists of changing or cleaning filters and (under some conditions) cleaning the main burners. FIL TERS - Insp ect once a mo nth. Replac e disposabl e or clean [...]

  • Page 20

    2. The supp ly ai r blower operates but the draft moto r doe s not when the roo m ther mosta t is se t to ca ll for h eat an d the fan swit ch in the “ON” pos itio n. a . The draft motor has inherent protection. If the motor shell is hot to the touch, wait for the internal overload to reset. b. If the mo tor she ll is cold w ith the room the rm[...]