York DHUC 036 Installation Instruction Download

Page: 20 / 20

Subject to change without notice. Printed in U.S.A.
Copyright



530.18-N8W

Post Office
Box 1592

York
Pennsylvania
17405-1592

Unitary
Products
Group

208/230, 575 VOLT

MODELS ONLY

208/230-1-60 VOLT

MODELS ONLY

208/230, 460 VOLT

MODELS ONLY

Summary of Contents for DHUC 036

Page 1: ...CGA and UL listed as follows 1 For use as a forced air furnace with cooling unit 2 For outdoor installation only 3 For installation directly on combustible flooring or in the U S A on wood flooring or...

Page 2: ...tatic Resistances 7 5 Physical Data 7 6 Supply Air Blower Perf 3 6 Ton Direct Drive 8 7 Motor Drive Data Belt Drive Blower 8 8 Supply Air Blower Perf 3 4 Ton Belt Drive 9 9 Supply Air Blower Perf 5 6...

Page 3: ...ulation in your area RIGGING AND HANDLING Exercise care when moving the unit Do not remove any packaging until the unit is near the place of installation Rig the unit by attaching chain or cable sling...

Page 4: ...internal wiring harness furnished with this unit is an integral part of a UL and CGA design certified unit Field alteration to comply with electrical codes should not be required A disconnect switch...

Page 5: ...TYPICAL FIELD WIRING REFER TO ELECTRICAL DATA TABLES TO SIZE THE DISCONNECT SWITCH WIRING OVERCURRENT PROTECTION REFER TO ELECTRICAL DATA TABLES TO SIZE THE DISCONNECT SWITCH WIRING OVERCURRENT PROTE...

Page 6: ...LAME 6 The furnace and its individual manual shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3...

Page 7: ...Table 2 The pressure thru the economizer is greater for 100 outdoor air than for 100 return air If the resistance of the return air duct system is less than 0 25 IWG the unit will deliver less CFM du...

Page 8: ...00 710 1631 1464 780 690 1699 1582 1421 825 750 670 1650 1524 1367 785 720 650 1570 1410 1315 755 690 620 1430 1324 1246 725 650 605 1360 1260 1185 700 630 590 1280 1185 1110 680 610 570 1180 1100 102...

Page 9: ...S REFER TO THE STATIC RESISTANCES TABLE FOR RESISTANCE VALUES ON APPLICATIONS OTHER THAN GAS ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS UNIT SIZE AIR FLOW CFM Available External Static Pressure IWG 0 20 0...

Page 10: ...re IWG 0 20 0 30 0 40 0 50 0 60 0 70 0 80 RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts 060 2500 1059 1560 1077 1590 1095 1630 1114 1650 1134 1660 1158 1685 1181 1720 2400 1032...

Page 11: ...504 630 28 9 16 0 8 0 6 4 165 0 125 0 67 0 50 0 1 3 1 3 0 8 0 8 8 6 6 0 3 0 2 4 46 0 27 3 13 8 11 2 70 40 20 15 70 40 20 072 208 230 3 60 460 3 60 575 3 60 187 414 518 253 504 630 20 3 10 2 8 2 146 0...

Page 12: ...32 3 33 4 75 13 7 15 9 18 1 20 3 22 5 24 7 26 9 28 1 29 3 30 5 31 8 80 10 4 12 8 15 1 17 4 19 8 22 1 24 5 25 9 27 3 28 7 30 2 85 7 2 9 7 12 2 14 6 17 1 19 6 22 0 23 7 25 3 27 0 28 6 90 6 6 8 9 11 3 13...

Page 13: ...material and the supply air ductwork for a distance of 3 feet from the unit The products of combustion must not be allowed to accumulate within a confined space and recirculate Locate unit so that th...

Page 14: ...DMC is energized The DMR or DMC power contacts close which energizes the line voltage draft motor As the speed of the draft motor reaches approximately 2500 RPM the centrifugal switch contact CS locat...

Page 15: ...nput Output 3 4 3 4 5 5 6 6 50 75 100 125 100 125 100 125 40 60 79 99 79 99 79 99 165 165 165 165 165 165 165 165 TABLE 16 LIMIT CONTROL SETTING Gas Valve Anticipator Setpoint Honeywell VR8204M 0 60 a...

Page 16: ...Adjust the resistances in both the supply and the return air duct systems to balance the air distribution throughout the conditioned space The job specifications may require that this balancing be don...

Page 17: ...e permissible range of the regulator setting replace the orifice spuds with spuds of the proper size NOTE To find the Btu input multiply the number of cubic feet of gas consumed per hour by the Btu co...

Page 18: ...e baffles 8 Run the wire brush down the vent tube from the flue collector end 9 If soot build up is particularly bad remove the vent motor and clean the wheel and housing Run the wire brush down the f...

Page 19: ...ed at the draft motor outlet a Check to make sure gas is being supplied to the unit Make sure that the gas pressure to the unit is within the proper limits as described in the POST START CHECK LIST an...

Page 20: ...in U S A Copyright by Unitary Products Group 1998 All rights reserved 530 18 N8W Post Office Box 1592 York Pennsylvania 17405 1592 Unitary Products Group 208 230 575 VOLT MODELS ONLY 208 230 1 60 VOLT...