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CAUTION

To prevent premature heat exchanger failure do 

not locate ANY gas-fired units in areas where 

chlorinated, halogenated, or acid vapors are 

present in the atmosphere.

WARNING

Improper installation, adjustment, alteration, 

service or maintenance can cause property 

damage, injury or death, and could cause 

exposure to substances which have been 

determined by various state agencies to cause 

cancer, birth defects or other reproductive 

harm. Read the installation, operating and 

maintenance instructions thoroughly before 

installing or servicing this equipment.

November, 2009

installation and service manual

gas-fired indoor power vented duct furnace/make-up air units

models dBP/dcP

5-565.1

5H080644a

THIS MANUAL IS THE PROPERTY OF THE OWNER. 

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB. 

FOR YOUR SAFETY

The use and storage of gasoline or other 

flammable vapors and liquids in open containers 

in the vicinity of this appliance is hazardous.

FOR YOUR SAFETY

if you smell gas:
1. open windows.
2. don’t touch electrical switches.
3. extinguish any open flame.
4. immediately call your gas supplier.

inspection on arrival

1.  Inspect unit upon arrival. In case of damage, report it 

immediately to transportation company and your local factory 

sales representative.

2.  Check rating plate on unit to verify that power supply meets 

available electric power at the point of installation.

3.  Inspect unit upon arrival for conformance with description of 

product ordered (including specifications where applicable).

IMPORTANT

The use of this manual is specifically intended 

for a qualified installation and service agency.   

A qualified installation and service agency must 

perform all installation and service of these 

appliances.

9900100

All models approved for use in California by the CEC

Summary of Contents for DBP

Page 1: ...LEAVE THE JOB FOR YOUR SAFETY The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous FOR YOUR SAFETY if you smell gas...

Page 2: ...a temperature rating of at least 105 C 12 When servicing or repairing this equipment use only factory approved service replacement parts A complete replacement parts list may be obtained by contacting...

Page 3: ...led in tightly sealed buildings or confined spaces must be provided with two permanent openings one near the top of the confined space and one near the bottom Each opening should have a free area of n...

Page 4: ...uspension or floor mounting is adequate to support the weight of the unit see Weights for base unit and factory installed option weights For proper operation the unit must be installed in a level hori...

Page 5: ...See Figure 5 3 Provide an airtight seal between the ductwork and the unit Seams with cracks in the ductwork should be caulked and or taped and be of permanent type All duct connections MUST be airtigh...

Page 6: ...orm with local building codes or in the absence of local codes with the National Fuel Gas Code ANSI Z223 1 NFPA 54 Latest Edition In Canada installation must be in accordance with CAN CGA B149 1 for n...

Page 7: ...e to the inability to verify complete seal of inner pipes 12 MIN RECOMMENDED 4 MIN TEE WITH DRIP LEG AND CLEANOUT CAP SLOPE 1 4 PER FOOT DOWNWARD TOWARD DRIP LEG EXHAUST H MIN 12 MIN RECOMMENDED 4 MIN...

Page 8: ...gged tapping accessible for test gauge connection See Figure 8 1 Verify the manual shut off valve is gas tight on an annual basis 4 Provide a sediment trap before each unit in the line where low spots...

Page 9: ...onal drawings on Figures 43 1 through 44 1 for the electrical knock out locations 9 All supply power electrical connections are made in the electrical section of the unit The low voltage thermostat an...

Page 10: ...ction line is allowed to be cooled liquid will condense in the line and can severely damage the compressor If the liquid line is warmed the refrigerant can flash into a gas This will cause erratic ope...

Page 11: ...uid Piping 1 Once installed the coil should be pressurized to 100 psig with dry nitrogen or other suitable gas The coil should be left pressurized for a minimum of 10 minutes If the coil holds the pre...

Page 12: ...ibited glycol solution that will protect the coil from the lowest possible temperatures that can occur at the particular coil s locality Start Up Procedure 1 Turn off power to the unit at the disconne...

Page 13: ...justment The gas pressure regulator integral to the combination gas control is adjusted at the factory for average gas conditions It is important that gas be supplied to the duct furnace in accordance...

Page 14: ...cause yellow tipping Retighten set screws after adjustment Propane Gas Flame Control An optimum flame will show a slight yellow tip Prior to flame adjustment operate furnace for at least fifteen minu...

Page 15: ...ge is disconnected and the damper closed Before operating the unit the fresh and return air dampers must be connected This is accomplished by the following 1 The damper actuator should be de energized...

Page 16: ...rt stop switch 2 The power exhauster relay is energized starting the power exhauster motor Once the motor has reached full speed the differential pressure switch closes The power exhauster relay pre p...

Page 17: ...the flame sensor proves the pilot and stops the spark ignitor from sparking 5 The main gas valve is opened and the main burner is lit to 100 full fire 6 If the unit was provided with a time delay rela...

Page 18: ...Adjuster Capillary 45 43 40 38 36 34 Units with Premium Control Box 32 30 9 46 48 12 13 10 50 49 52 51 55 47 4 6 5 1 2 3 8 27 25 23 21 19 17 15 16 18 20 22 24 26 14 44 42 39 37 35 33 31 1 Discharge T...

Page 19: ...e set to insure that the minimum inlet gas pressure is available 6 W C for natural gas 11 W C for propane gas Figure 19 4 Low or High Gas Pressure Switch 3 High Gas Pressure Switch OPT The high gas pr...

Page 20: ...controls damper actuator motor starter etc Refer to the unit model number to determine the volt amp VA capacity of the duct furnace The 15th digit indicates the VA See Model Nomenclature 14 Control Re...

Page 21: ...tory installed in the blower section The fresh air damper is used as an outside air shut off damper so ultra low leak Class II leakage resistance less than 10 CFM ft2 at 1 W C dampers with self compen...

Page 22: ...reduce compressor operation of the mechanical cooling system The economizer functions as a true first stage of cooling and provides maximum fuel economy during the cooling cycle An enthalpy sensor is...

Page 23: ...115V 1Ph power supply must be routed through the electrical section wall into the back of the convenience outlet junction box 38 Blower Door Switch OPT The blower door switch is factory installed ins...

Page 24: ...the set point The controller includes a set point dial that must be field set to the desired mixed air temperature typically 55 F 43 Warm Up Stat OPT A warm up stat is provided with Air Control optio...

Page 25: ...re of the blower motor blockage of the inlet air etc the manual reset switch prevents the unit from cycling on the high limit If the limit temperature is exceeded a service person must inspect the uni...

Page 26: ...G or H I J or K E or F G or H I J or K Max Temp Rise F 100 100 100 100 100 100 100 100 100 Min Temp Rise F 37 31 20 45 37 22 52 42 25 Max CFM 6000 7250 11111 5700 7000 12000 5700 7000 12000 Min CFM 2...

Page 27: ...8 4558 4233 3951 3704 3486 3292 3119 2963 Btu Hr Air Temperature Rise through Unit F Input Output 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Max CFM Min 500 000 400 000 9259 8230 7407 673...

Page 28: ...ct an indirect fired 100 make up air unit to meet the following conditions 1 CFM at sea level 5 000 cfm 2 Outdoor design temp 10 F Indoor design temp 70 F 3 Heating output capacity 5000 cfm x 70 F 10...

Page 29: ...or I J H blowers Using 5000 cfm and 0 87 W C T S P the horsepower is 3hp and 700 rpm Although I J H blowers results in a 3 hp motor this blower requires the use of the extended cabinet length As a res...

Page 30: ...0 15 0 02 0 07 0 02 2000 0 03 0 03 0 05 0 06 0 03 0 11 0 06 0 17 0 02 0 08 0 02 2500 0 04 0 04 0 07 0 09 0 04 0 15 0 09 0 24 0 03 0 09 0 03 3000 0 05 0 06 0 10 0 11 0 06 0 19 0 13 0 32 0 04 0 12 0 04...

Page 31: ...3400 1 35 804 1 55 881 1 77 955 2 00 1025 2 23 1092 2 47 1157 2 96 1280 3 49 1396 4 03 1505 3800 1 82 880 2 05 951 2 29 1018 2 53 1083 2 79 1146 3 04 1206 3 58 1322 4 14 1431 4 72 1535 4200 2 40 959 2...

Page 32: ...10 00 1167 9259 6 40 804 6 91 846 7 45 887 7 99 927 8 55 966 9 12 1004 10 30 1079 11 52 1150 12 79 1218 10000 7 97 862 8 52 901 9 09 939 9 67 977 10 27 1014 10 87 1050 12 12 1120 13 41 1187 14 74 125...

Page 33: ...69 1236 115 F 4500 1 68 708 1 98 780 2 30 847 2 63 912 2 98 973 3 34 1032 4 11 1142 4 94 1245 105 F 120 F 4938 2 15 763 2 48 89 2 82 893 3 17 953 3 54 1011 3 93 1066 4 74 1172 104 F 119 F 5000 2 23 77...

Page 34: ...used on units that include a blower The Sheave Arrangement is Digit 19 and is found on the unit Model Identification Plate The Sheave Assembly describes the motor and blower sheave size and bore as w...

Page 35: ...Assembly Digit 19 Sheave Assembly Digit 19 SheaveAssembly 56 A 3H35129B1 D 3H35129B4 143 or 145 B 3H35129B2 E 3H35129B5 H 3H35129B8 182 to 184 C 3H35129B3 F 3H35129B6 I 3H35129B9 K 3H35129B11 O 3H3512...

Page 36: ...410 3H35128B4 6 771 751 731 710 690 670 649 629 609 589 568 3H35128B7 9 958 939 920 901 882 863 843 824 805 786 767 3H35128B10 12 1136 1116 1096 1076 1055 1035 1015 994 974 954 934 3H35128B13 14 1380...

Page 37: ...Diameter Bore Pitch Diameter Bore 3H35129B1 4 1 0 625 10 9 1 B71 3H35129B2 4 1 0 875 10 9 1 B71 3H35129B3 4 1 1 125 10 9 1 B70 3H35129B4 4 7 0 625 10 9 1 BX71 3H35129B5 4 7 0 875 10 9 1 BX71 3H35129B6...

Page 38: ...Thermal Weight Efficiency 17 18 Size HP Type Size Draw Factor Overload lbs A1 1 3 ODP 56 3 0 1 35 Yes 25 N A B1 1 2 ODP 56 4 1 1 20 Yes 23 N A B5 1 2 TEFC 56 4 0 1 15 Yes 28 N A C1 3 4 ODP 56 5 5 1 25...

Page 39: ...15 66 86 5 F7 or R7 2 TEFC 18 9 145T 6 4 2 5 1 00 41 84 0 70 0 F8 or R8 2 TE 18 12 182T 6 4 3 9 1 15 65 84 0 77 0 G1 or S1 3 ODP 182T 10 0 1 15 78 81 5 G2 or S2 3 ODP HE 182T 8 9 1 15 83 89 5 G3 or S...

Page 40: ...9 5 G7 or S7 3 TE 18 9 182T 10 0 3 6 1 00 64 84 0 70 0 G8 or S8 3 TE 18 12 184T 8 8 5 5 1 15 84 84 0 82 0 H1 or T1 5 ODP 184T 14 0 1 15 87 87 5 H2 or T2 5 ODP HE 184T 13 6 1 15 94 89 5 H3 or T3 5 ODP...

Page 41: ...4 0 70 0 G8 or S8 3 TE 18 12 184T 4 3 2 6 1 15 73 82 5 75 5 H1 or T1 5 ODP 184T 7 0 1 15 87 87 5 H2 or T2 5 ODP HE 184T 6 8 1 15 94 89 5 H3 or T3 5 ODP 18 9 184T 9 1 3 2 1 15 94 84 0 73 0 H4 or T4 5 O...

Page 42: ...DP 184T 5 2 1 15 91 87 5 H5 or T5 5 TEFC 184T 5 2 1 15 89 87 5 H6 or T6 5 TE HE 184T 5 2 1 15 117 89 5 I1 or W1 7 1 2 ODP 213T 7 8 1 15 113 88 5 I5 or W5 7 1 2 TEFC 213T 8 0 1 15 142 89 0 I6 or W6 7 1...

Page 43: ...7 27 13 32 75 30 00 28 00 29 96 43 23 44 05 42 37 24 60 8 10 44 80 87 77 3 4 350 400 E F G or H 1 37 75 23 07 38 63 32 75 42 00 28 00 41 90 43 23 55 57 42 37 36 14 10 44 80 87 77 3 4 500 600 G or H 2...

Page 44: ...1 24 00 4 35 34 00 50 37 1 98 2 00 2 00 2 00 P 1 36 32 54 D 19 23 30 5 HEIGHT X E WIDTH 7 65 30 48 152 83 Figure 44 2 DCP Indoor Power Vented Cooling Package Unit Dimensions with Blower Type I J K or...

Page 45: ...81 55 41 7 00 Dimensions Table 45 2 Indoor Power Vented Cooling Package Units All dimensions in inches Model Blower Type Size Digit 16 A B C D E N K L J M 75 All 87 77 34 85 81 30 19 52 32 00 6 23 10...

Page 46: ...Qty 75 All 27 5 30 5 1 5 18 25 21 1 1 625 1 1 375 16 25 26 5 19 25 2 1 625 2 0 875 100 125 All 27 5 30 5 1 5 21 28 24 1 1 625 1 1 375 19 5 29 75 22 5 2 1 625 2 0 875 150 175 All 27 5 30 5 1 5 24 31 2...

Page 47: ...nsulation All Sections 75 All 343 6 26 46 10 72 100 125 All 382 6 26 46 10 72 150 175 All 423 6 29 52 10 77 200 225 All 491 6 29 52 12 85 250 300 E F G or H 526 8 33 60 12 87 250 300 I J or K 775 15 3...

Page 48: ...gas and electric supply 2 Disconnect gas manifold at ground union joint 3 Remove the two screws holding the manifold to the heat exchanger support 4 Slide the manifold through the manifold bracket 5...

Page 49: ...urner assembly out The pilot is attached to the burner assembly 6 Examine the burner and pilot assembly for cleanliness and or obstructions as necessary see Duct Furnace for cleaning instructions 7 Re...

Page 50: ...if necessary 9 Find source and re direct airflow away from unit 10 Tighten pilot orifice Flame impingment on pilot sensor may cause pilot sensor to become inoperative Main burners do not light Pilot...

Page 51: ...thermostat 5 Check unit wiring against the wiring diagram 6 Check design conditions If unit is undersized an additional unit s or other heat source must be added Too Much Heat 1 Thermostat malfunctio...

Page 52: ...fy the complete model including blower and cooling sections Ordering When servicing repairing or replacing parts on these units locate the model identification plate of the unit and always give the co...

Page 53: ...nations 01 10 201 01 02 1000 MOTOR VENDOR CODE 01 Century 15 Marathon etc FAN OR BLOWER VENDOR CODE 10 Lau 20 Morrison etc SERIES IDENTITY NUMBER Identifies which series of controls were furnished on...

Page 54: ...____ V L3 ______ V 22 Motor amps L1 ______ Amp L2 ______ Amp L3 ______ Amp 23 High temperature limit control continuity checked _____ Yes ____ No 24 Burner light off Low Fire Does entire burner light...

Page 55: ...der Bearings I 18 18 Spider Bearings under 15 Hp D 9 9 Pillow Block Bearings J 18 18 Pillow Block Bearings under 15 Hp E 12 12 Spider Bearings K 18 18PillowBlockBearingsfor15Hp up F 12 12 Pillow Block...

Page 56: ...YEARS FROM DATE OF SHIPMENT FROM SELLER These warranties are issued only to the original owner user and cannot be transferred or assigned No provision is made in these warranties for any labor allowa...

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