York DHG180の取扱説明書

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Summary
  • York DHG180 - page 1

    CONTENTS G E N E R A L .......... ......... .......... .... 3 S A F E T YC O N S I D E R A T I O N S ........... ....... 3 A G E N C YA P P R O V A L S ..... .......... ....... 4 I N S P E C T I O N . .......... ......... .......... . 4 I N S T A L L A T I O N ..... ......... .......... .... 4 O P E R A T I O N .... .......... .......... ...... 1 9 ...

  • York DHG180 - page 2

    035-17233- 000-C-070 2 2 Unitary P roducts T A BLE OF CONTENTS G E N E R A L ........ ........ ...... ........ ........3 S A F E T YC O N S I D E R A T I O N S ....... ........ ...... ..3 R E F E R E N C E ....... ................................. 4 R E N E W A L P A R T S ..... ........ ........ ........ ........ ....4 AGENCY APPROVALS . . . . . . ...

  • York DHG180 - page 3

    035-1723 3-000-C-0 702 Unitary Pro ducts 3 D 1 HG 180 E 180 25 EC GENERAL YORK M odel DHG un its are single p acka ge high ef ficiency gas-fire d central heat ing furnaces with co oling unit desi gned for out door i nstall ation on a rooft op or a sla b. The unit s are com pletely a ssembl ed on rigid, p ermanentl y att ached b ase rails. A ll pipi ...

  • York DHG180 - page 4

    035-17233- 000-C-070 2 4 Unitary P roducts REFERENCE Addit ional informat ion on th e design, i nstall ation, o peration and servic e of this equipmen t is available in the fol lowing ref- erence f orms: • 44-320-10 - Barom etric Relie f Damper Ac cessory • 530.18-N6 .1V - Propane Conv ersion Access ory (USA) • 530.18-N6 .2V - High Altitude A ...

  • York DHG180 - page 5

    035-1723 3-000-C-0 702 Unitary Pro ducts 5 LOCA TION Use the fol lowing gu idelines to s elect a suit able l ocatio n for these u nit s. 1. U nit is design ed for outd oor instal lation on ly . 2. C ondense r coils must h ave an unlimit ed supply of air . Where a choic e of location is po ssible, pos ition the uni t on eithe r north o r east si de ...

  • York DHG180 - page 6

    035-17233- 000-C-070 2 6 Unitary P roducts combus tion and ve ntilation ai r in accorda nce with S ection 5.3, Air fo r Combust ion and V entilati on of the Nati onal Fuel Gas Code, ANSI Z 223.1 (in U.S.A.) or Sectio ns 7.2, 7.3 or 7.4 of Gas Installation Codes CAN/CGA-B149 .1 and .2 (in Canad a) and/or app lica ble provis ions of th e local b uild ...

  • York DHG180 - page 7

    035-1723 3-000-C-0 702 Unitary Pro ducts 7 CONDENSA TE DRAIN Plumbin g must c onform to loc al codes. Use a sealing com - pound on male pipe thre ads. Inst all a condensa te drain line from the 1" NP T female c onnectio n on the unit to an open drai n. An alterna te drain con nection (1" NPT fema le coupli ng) is provide d inboa rd on the ...

  • York DHG180 - page 8

    035-17233- 000-C-070 2 8 Unitary P roducts COMBUSTION DISCHARGE The produ cts of combusti on are disc harged ho rizonta lly through tw o screened ( hooded ) openings on th e upper ga s heat acces s panel . GAS PIPING Proper siz ing of gas piping depends on th e cubic feet per hour of gas flow required , specific gra vity of t he gas and the length ...

  • York DHG180 - page 9

    035-1723 3-000-C-0 702 Unitary Pro ducts 9 FIGURE 5 : TYPICAL FIELD WIRING T A BLE 4: GAS HE A T APPLICA TION DA T A 1 Input Capacity (Mbh) Output Capacity (Mbh) Av ai la b le o n Models Gas Rate 2 (Ft. 3 /Hr .) Te m p R i s e ° F At Full Input 3 0t o 2 0 0 0F e e t Above Sea Level 4 2,000 to 4,5 00 Feet Above Sea Level 0t o2 0 0 0F e e t Above Se ...

  • York DHG180 - page 10

    035-17233- 000-C-070 2 10 Unitary P roducts L.P . UNITS, T ANKS AND PIPING All gas hea t units are s hipped from the facto ry equipped f or natural ga s use only . The unit may be convert ed in the f ield for use with L.P ./prop ane gas with access ory kit model num- ber 1NP0 437. All L.P ./prop ane gas equip ment must con form to the safety standa ...

  • York DHG180 - page 11

    035-1723 3-000-C-0 702 Unitary Pro ducts 11 Check a ll conne ctions for leaks when piping is completed, using a soap solution . NEVER USE A FLAME. VENT AND COMBUSTION AIR H OODS T w o vent hood s and a combu stion ai r hood (wi th scree ns) are shippe d attac hed to the blower hous ing in the blower com - partm ent. The se hoods mu st be inst alled ...

  • York DHG180 - page 12

    035-17233- 000-C-070 2 12 Unitary P roducts FIGURE 9 : ENTHALPY SETPOINT ADJUSTME NT ...

  • York DHG180 - page 13

    035-1723 3-000-C-0 702 Unitary Pro ducts 13 T A BLE 6: PHYSICAL DATA MODELS DHG 180 240 EV APORA TOR BLOWER Centrifu gal Blower (Dia. x Wd. in.) 15 x 15 18 x 15 Fan M otor H P 57 . 5 EV APORA TOR COIL Rows Deep 44 Fins Per Inch 13.5 13 .5 Face A rea (S q. Ft. 15.5 20 .0 CONDENSER F ANS (T wo Per Unit) Propeller Dia. (in.) (Each) 30 30 Fan Moto r Hp ...

  • York DHG180 - page 14

    035-17233- 000-C-070 2 14 Unitary P roducts FIGURE 10 : UNIT DIM ENSIONS DHG180 & 240 (FRONT VIEW) RETURN AIR SUPPLY AIR BOTTOM SUPPLY AND RETURN AIR OPENINGS (See Note) (B) POWER WIRING ENTRY (A) CONTROL WIRING ENTRY NOTE: For curb mounted units, refer to the curb hanger dimensions of the curb for the proper size of the supply and return air d ...

  • York DHG180 - page 15

    035-1723 3-000-C-0 702 Unitary Pro ducts 15 NOTE: A 1” c learance must be prov ided be tween a ny com- bustibl e materi al and the supp ly air ductwork fo r a dist ance of 3 feet from the unit. NOTE: The prod uct s of combus tion mus t not be a llowed t o accum ulate wi thin a co nfined sp ace a nd reci rculat e. NOTE: Locate uni t so that the ve ...

  • York DHG180 - page 16

    035-17233- 000-C-070 2 16 Unitary P roducts T ABLE 1 1: DH G 15 TON SUPPL Y AIR BLOWER PERFORMANCE DHG180 - BOTTOM DUCT CONNECTIONS 1, 2 BLOWER SPEED, (RPM) MOTOR PULLEY (TURNS OPEN) 3 CFM 4500 5250 6000 6750 7200 ESP 4 BHP KW ESP 3 BHP KW ESP 3 BHP KW ESP 3 BHP KW ESP 3 BHP KW 208 VOL T AND ST ANDAR D DRIVE 850 6.0 5 0. 9 2.4 2.1 0.6 2.9 2.6 0.3 3 ...

  • York DHG180 - page 17

    035-1723 3-000-C-0 702 Unitary Pro ducts 17 T A BLE 12: DHG 20 TON SUPPL Y AIR BLOWER P ERFORMANCE DHG240 - BOTTOM DUCT CONNECTIONS 1, 2 BLOWER SPEED , (RPM) MOTOR PULLEY (TURNS OPEN) 3 CFM 6000 7000 8000 9 000 9400 ESP 4 BHP KW ES P 4 BHP KW ESP 4 BHP K W ES P 4 BHP KW ESP 4 BHP KW 208 VOL T AND ST ANDARD DR IVE 870 6.0 5 1.3 3 .6 3.0 0.7 4.3 3.7 ...

  • York DHG180 - page 18

    035-17233- 000-C-070 2 18 Unitary P roducts T ABLE 13: ST A TIC RESIST ANC ES 1 DESCRIPTION RESIST ANCE, I WG CFM 15 TO N 20 TON 4500 576 5 7200 6000 7000 9400 WET COIL 0.1 0.1 0 .1 0.1 0. 1 0.1 ECONOMIZE R OPTION 0.1 0.1 0 .1 0.1 0. 1 0.1 HORIZONT AL DUCT CONN. 2 0 .2 0.3 0.5 0.2 0.3 0.5 1 Deduct these resistance values from the available unit ESP ...

  • York DHG180 - page 19

    035-1723 3-000-C-0 702 Unitary Pro ducts 19 OPERA TION COOLING SYSTEM The cool ing sectio n is a comp lete factory package util izing a n air-cool ed condens er . The system is fact ory-charge d with Refrigeran t-22. The compr essors ar e hermetica lly sealed , internal ly sprung and base-m ounted with rub ber-insul ated hold-dow n bolts. Compr ess ...

  • York DHG180 - page 20

    035-17233- 000-C-070 2 20 Unitary P roducts 3. A Low P ressu re Swit ch/Los s Of Cha rge to p rotect agains t loss of r efrigerant charge. (Open s at 7 p sig + 3 a n dr e s e t sa t2 2p s i g+5 ) If either on e of the ab ove safety co ntrols ope ns, that indi vid- ual refrigera nt system will be loc ked out. The other refrigera nt system will con t ...

  • York DHG180 - page 21

    035-1723 3-000-C-0 702 Unitary Pro ducts 21 3. Redundan t Gas V alve - There are two separa te gas valves in the fu rnace. Eac h valve contai ns a mai n and a redundan t valve. The redund ant valves are loc ated upstre am of the ma in gas valv es. Sho uld ei ther or bot h of the main gas valves fail in the open positio n the redu n- dant va lves se ...

  • York DHG180 - page 22

    035-17233- 000-C-070 2 22 Unitary P roducts 5. Set room therm osta t to desire d tempera ture.(If therm o- stat se t temperature is abo ve room temperat ure, pilot burner ig nition w ill occur an d, aft er an in terval to prov e pilot fl ame, mai n burners wi ll ignite ). TO SHUT DOWN: 1. Turn off electr ic powe r to unit. 2. Depres s knob o f gas ...

  • York DHG180 - page 23

    035-1723 3-000-C-0 702 Unitary Pro ducts 23 Reve rse the abov e proce dure to re place th e assemb lies. Make sure that bu rners are le vel and s eat at the rear of the heat excha nger . BURNER AIR SHUTTER ADJ USTMENT Adjust burn er shutters so no ye llow flame is ob served in the heat ex changer t ubes. Re fer to Figure 17. CHECKING SUPPL Y AIR CF ...

  • York DHG180 - page 24

    035-17233- 000-C-070 2 24 Unitary P roducts ADJUSTMENT OF TEM PERA TURE RISE The temp erature rise (or temperatu re diffe rence betwe en the return air a nd the heated air fro m the furnace) must lie within the ra nge shown o n the ETL rating plat e and th e data i n T able 2. Aft er the temp erature rise has been dete rmined , the cfm can be calc ...

  • York DHG180 - page 25

    035-1723 3-000-C-0 702 Unitary Pro ducts 25 MAINTENANCE NORMAL MAINTENANCE Peri odic maint enanc e nor mall y cons ists of ch angin g or cl ean- ing fi lters and ( under some c ondit ions) clea ning the m ain burn ers FIL TERS Inspec t once a month. Replace disp osable or cl ean perma- nent type as nec essary . DO NOT replace perman ent type with d ...

  • York DHG180 - page 26

    035-17233- 000-C-070 2 26 Unitary P roducts 1. Remo ve the burner asse mbly as outlined in B URNER INSTRUCTIONS. 2. Remove the roof ov er the gas heat sectio n. 3. At the top p late from t he top d raft blo wer hous ing and th e top draft blo wer wheel. 4. Remove the sc rews holdi ng the top of the flue coll ector box. Carefully remove th e top o f ...

  • York DHG180 - page 27

    035-1723 3-000-C-0 702 Unitary Pro ducts 27 1. The indoor b lower m otor is a non- inheren tly protec ted three- phase moto r . Prote ction is provid ed by an overlo ad relay fo r overcurre nt and fuses for short c ircuit. If t he motor fa ils to run, check the lin e voltage ci rcuit and co n- trol volt age circuit per the fol lowing proc edure: a. ...

  • York DHG180 - page 28

    Subject to cha nge withou t notice. Printed i n U.S.A. Copyright © by Unita ry Produ cts 2002. All r ights re served. Superse des: 035- 17233-00 0 Rev B (050 0) 035-17233-0 00-C-070 2 Unit ary 5005 Norma n Product s Y ork OK Group Drive 73069 d. If the fu rnace is cold , check fo r 24 volts at wire 2 41 attach ed to the time de lay rel ay (ETD) lo ...

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