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1 OIL-FIRED W A RM A IR FURN A CE P3DHX1 2F08001 P 2DHX16F12 001 (Downflow or Horizontal Models) P2LBX16F 14501 P4L BX20F19 001 (Lowboy Models) INTRODUCTION ............................................................. 2 HEAT LOSS ....................
2 IMPROPER INSTALLATION MAY CRE- ATE A CONDITION W HERE THE OP- ERA TIO N OF THE PRODUC T COU LD CAUSE PERSONAL INJURY OR PROPERTY DAMAGE. IMPROPER INSTALLATION, ADJUST- MENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE INJURY OR PROPERTY DAMAGE.
3 DOWN-FLOW INSTALLATION All P*DHX furnace models have been assembled for instal lation in the down- flow posit ion. Maintain al l clearances to combustibl es as outlined in Table 1. P*DHX models hav e available sub-bases for installat ions on com bustible floor s.
4 SUSPENDED INST ALLA T ION Refer to Figure 1. M aintain clearances to combustibl es as outlined in Table 1. T he furnace may be su spended by field fabr i- cating a cradle of a ngle iron and threaded r od. Secure the furn ace with 2 inch minimu m slotted angle or equiva- lent, as show n in Figure 1.
5 Fig. 2: Common Ch imne y Problems Table 2: Common Chimne y Problems Refer to Figur e 2 Key Tr ouble Diagnosti c Remedy A Top of ch imney lower than sur- rounding ob- jects Observatio n Extend ch imney above all s ur- rounding ob- jects w ithin 30 feet.
6 Table 3: Minimum Chimney Base Temperatures (°F) Chimney Height (ft.) Nozzle 11 20 28 36 Chimney Thermal Resistan ce < R6 0.50 300 400 535 725 0.65 275 340 430 535 0.75 260 320 380 475 0.85 250 300 355 430 1.00 245 300 355 430 1.10 245 290 345 400 1.
7 ers and hum idifiers may be included on the furnace circu it. Although a suitab ly located circ uit breaker can be used as a service switch, a sep arate serv ice switch is advisab le.
8 OIL BURNER P*LBX furnace s are equipped w ith Beckett AF Serie s oil burners with the Beckett CleanCut pump and R7184B oil primary contro l. P*DHX furnaces are equipped w ith Beckett AF Series oi l burners w ith the R8184N oil pr imary con- trol. The oil burner mu st align properly with the cer afelt fiber chamber (fire pot).
9 Check the oi l pump press ure. Standard operating pressure is 100 PSI G. After reaching ste ady state, take a smoke test . If not indica ting a trace, s et the combust ion air controls t o provide a trace. Typically , the CO 2 reading w ill range from 11.
10 IMPORTANT : Be sure that the home owner know s where the burner reset switch is located, and is aw are that the reset switc h is not to be activated mor e than once w ithout a thorough look for the cause of the pr oblem, (lac k of fuel, etc.
11 T A BLE A-1: BECKETT OIL BURNER SET-UP BECKETT AF SERIES OIL BURNERS FURNACE MODEL OUTPUT BTU/Hr. BURNER MODEL NOZZLE (Delavan) PUMP PRESSURE FLOW RATE HEAD STATIC PLATE 60,000 3 AF76BNHS 0.50 / 80°A 100 PSIG 0.50 GPH F3 1 3-3/8 in. 78,000 2 AF76BNHS 0.
12 T A BLE A-2: DIRECT DRI VE BLOWER SET -UP BLOWER SET-UP COOLING CAPACITY 0.20 in. w.c. 0.50 in. w.c. FURNACE OUTPUT BTU/Hr. BLOWER MOTO R HP Speed Speed Htg.
13 T A BLE A-4: DIRECT DRI VE BLOWER CH A RACTERISTICS CFM External Static Pres sure – inches w.c. FURNACE MODEL BLOWER MO TOR HP MOTOR FLA TEMP. RISE ( ∆ ∆ ∆ ∆ T) SPEED 0.20 0.30 0.40 0.50 0.60 High 1469 1386 1308 1213 1123 Med-H igh 1377 1308 1224 1143 1063 Med-Low 1088 1075 1038 985 916 P3DHX 12F08001 GT10 ½ 7.
14 GENER A L DIMENSIONS - P2LBX16F 14501 Cabinet Plenum Opening s Flue Wi dt h (A) Depth (B) Height (C) Supply Air (D x E) Return Air (D x G) Gap (F) Dia. (H) Height (J) Filter Shipping We ig h t 22 51-½ 41 20-½ x 18- ⅝ 20-½ x 18- ⅝ 1-¾ 6 34- ⅜ 20 x 25 x 1 290 lb.
15 GENER A L DIMENSIONS - P4LBX20F 19001 Cabinet Plenum Opening s Flue Wi dt h (A) Depth (B) Height (C) Supply Air (D x E) Return Air (D x G) Gap Dia. (H) Height (J) Filter (2) Shipping We ig h t 26 46 1 56 24 x 22 24 x 22 2- ⅝ 7 50-¼ 20 x 25 x 1 390 lb.
16 GENER A L DIMENSIONS - P3DHX12F 08001 Cabinet Plenum Opening s Flue Return Air Wi dt h (A) Depth (B) Height (C) Supply Air (D x E) Top (K x L) Side (F x G ) Dia. (H) Height (J) Filter Shipping We ig h t 22-¼ 22-¼ 1 54-¾ 19 x 19 18 x 18 18 x 18 5 28-¼ 20 x 20 x 1 263 lb.
17 GENER A L DIMENSIONS - P2DHX16F 12001 Cabinet Plenum Opening s Flue Wi dt h (A) Depth (B) Height (C) Supply Air (D x E) Return Air (F x G ) Dia. (H) Height (J) Filter Shipping We ig h t 22-¼ 22-¼ 1 62-¼ 20-¾ x 20-¾ 18 x 18 6 37-¼ 20 x 20 x 1 320 lb.
18 WIRING DI A GR A M : M ODEL P3DHX12F08001 WIRING DI A GR A M : M ODEL P2DHX16F12001.
19 WIRING DI AGRAM: M ODEL P2LBX16F1 4501 WIRING DI AGRAM: M ODEL P4LBX20F1 9001.
20 R7184 D ETAILED SEQUE NCE OF OPER A T ION Power is app lied to unit. The R7184 completes a self-diagnosti c procedure. If no light or flame i s pr esent, and unit p asses its self- diagnost ic procedure, the c ontrol enters int o the idle mode . Thermostat c alls for heat : A) Safety check is made f or flame (4 second d elay).
21 IDLE STATE THERMOSTAT CALLS FOR HEAT SAFETY CHECK FOR FLAME (5 SEC .) BURNER MOTOR & IGNITOR START SOLENOID VALVE OPENS TRIAL FOR IGNITION 15 SEC . BURNER FLAME MONITORED CARRYOVER STATE • Provides con tinuous spark • LED diagno stic light ON • Start Carr y over Timer CARRYOVER TIMER E XPIRES RUN STATE • I g nitor turns o ff.
22 R7184 LED DIAGNOST IC LIGHT The LED diagnos tic light has several function s. It indicate s the state or mode in which t he oil burner i s op erating. It will also indicat e fault conditions , and help determine cad cell resista nce while the burner is operatin g.
23 T A BLE C-2: R7184 T ROUBLESHOOTING Condition: Burner motor does not start w hen there is a call for h eat. Procedure Status Corrective Action 1. Check that limit switche s are closed and contac ts ar e clean. This in cludes the burner motor re set button.
24 Table C-2: R718 4 Troubleshooting continued from previous page Procedure Status Correctiv e Action Indicator lig ht turns off. Eliminat e external light so urce or permane ntly shield cad cell. 4. Shield cad cell from exter- nal light . Indicator light stay s on.
25 Table C-2: R718 4 Troubleshooting continued from previous page Procedure Status Correctiv e Action Indicator lig ht is on. Remount contro l onto burner housi ng. Go to step 6. 10. Check cad cell. • Disconne ct line voltage power and op en line switch.
26 Table C-3: Sy stem and General Troubl eshooting continued Problem Possible Cause Remedy Photo Cell w iring shorted or room light l eaking into p hoto cell compa rtment Check photo cell (cad cell) w iring for short circuits. Also , check for room light leaking into cad cell co mpartment.
27 Table C-3: Sy stem and General Troubl eshooting continued Problem Possible Cause Remedy System tem perature rise to o high. System temperat ure rise ideally should not exceed 85°F. Check for clogged air fil ters. Check blow er fan for excess dirt bui ld-up or debris.
28 Table C-3: Sy stem and General Troubl eshooting continued Problem Possible Cause Remedy Airflow blo cked or dirty air fil- ter. Clean or replac e air filter. Supply air t emperature too hot. Insufficient airflow. Check all d ampers. Open cl osed dampers includ ing register s in unused rooms.
29 The above diagra ms show typical ap- proaches to fram ing the rough size open- ing for the P*DH X series furnace s. Be sure to follow local building code re- quirements w ith respect to fra ming modi- fication s. P3DHX1 2F08 001 V EST IBUL E KIT When the P3DHX12F080 01 furnace is install ed in the downflow positi on, the Part No.
30 REPAIR PART LIST – P3DHX12F08001A ITEM DESCRIPTIO N 1 Assem bly, Right S i de Panel 2 A ssembly, Left Side P anel 3 P anel, Rear 4 Assem bly, Blow er Divis ion Panel 5 Asse m bly , Base Panel 6 P.
31 REPAIR PART LIST – P2DHX16F12001A ITE M DESCRIPTIO N 1 S ide Panel, Right and Left (2 Req’d) 2 S ide Panel (Heat Exchanger (2 Req’d) 3 Panel, Rear 4 A ssembly, Blower Division Panel 5 S uppor.
32 REPAIR PART LIST – P2LBX16F14501A ITE M DESCRIPTIO N 1 Panel, Side (Left) 2 Panel, Side (Right) 3 Panel, Rear (Upper) 4 Panel, Blower Division 5 Panel Assembly, Base 6 Panel, Inner Front 6A Bezel.
33 REPA IR PA RT LIST – P4LB SERIES ITE M DESCRIPTIO N 1 P anel, Left Side (Heating Compartment) 2 P anel, Right Side (Heating Co m partment) 3 P anel, Left Side (Blower Compart m ent) 4 Panel, Righ.
34 REPL ACEMENT P ART CONT ACT INFORM A TI ON This is a generic parts lis t. T o request a com plete part s list, ref er to the c ontact inf orm ation below: • Call Consum er Relations at 1-877-874-7 378. Follo w the instructions to contact t he departm ent and/or repr esen- tative that can assist you.
35 NOTES.
36 Subject to change without notice. Printed in U.S.A. Copyright © by York International Corp. 2003. A ll rights reserved 035-14289-001 Rev. A (0503) Supersedes 035-14289-000, 660.
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