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2016-01-29 

X40223 rev. K 

 

 
 

 
 

 
 

 

 

 

 

ATTENTION: 

Do not tamper with the unit or its controls. Call a qualified service technician.

 

INSTALLER / SERVICE TECHNICIAN:

 Use the information in this manual for the installation / servicing of the furnace and 

keep the document near the unit for future reference. 

These instructions must be read and understood completely before attempting installation.

 

HOMEOWNER: 

PLEASE Keep this manual nears the furnace for future reference. 

Manufactured by: 

 

Industries Dettson Inc. 
Sherbrooke (Québec) Canada  

www.dettson.com 

 

 

c

 

us

 

Summary of Contents for c105-1-d

Page 1: ...in this manual for the installation servicing of the furnace and keep the document near the unit for future reference These instructions must be read and understood completely before attempting installation HOMEOWNER PLEASE Keep this manual nears the furnace for future reference Manufactured by Industries Dettson Inc Sherbrooke Québec Canada www dettson com c us ...

Page 2: ...1 2 Side return air inlet 15 5 2 Filter arrangement 15 5 3 Supply air ducts 15 5 4 General requirements 15 5 4 1 Duct work acoustical treatment 16 6 Gas piping 17 6 1 Gas pipe grommet 18 7 Electrical connections 18 7 1 120 V wiring 18 7 2 24 V wiring 19 7 3 Thermostats 19 7 4 Alternate power supply 19 7 5 blower speeds 4 speed PSC motor 19 8 Venting 23 8 1 Special venting requirements for installa...

Page 3: ... S3 1 and S3 2 33 9 6 10 Manual fan on mode 33 9 7 Troubleshooting 33 9 7 1 System lockout 33 9 7 2 System reset 33 9 7 3 Thermostat reset 33 9 7 4 Auto restart 33 9 7 5 Diagnostic features 33 9 7 6 Fault code retrieval 33 9 7 7 CFM indicator 33 9 8 Prime condensate trap with water 34 9 8 1 Check safety controls 35 9 8 2 Checklist 35 10 Operating your furnace 35 10 1 Start up instructions 35 10 2 ...

Page 4: ...tch Modulating Valve 35 Figure 24 Typical Flame Appearance 36 INDEX OF TABLES Table 1 Minimum clearance to combustible material for all units 9 Table 2 Loose parts list 10 Table 3 Air flow capacity and blower data 2 stage variable 16 Table 4 Air flow capacity and blower data 2 stage direct drive 16 Table 5 Air flow capacity and blower date 1 stage direct drive 17 Table 6 Maximum capacity of pipe i...

Page 5: ...minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fuelled heating appliance or equipment The sign shall read in print size no less than in half 1 2 inch in size gas vent directly below Keep clear of all obstruction INSPECTION the state of local gas inspector of the side wall horizontally vented gas fuelled equipment shall not...

Page 6: ... POISONING COMPONENT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death and unit component damage Corrosive or contaminated air may cause failure of parts containing flue gas which could leak into the living space Air for combustion must not be contaminated by halogen compounds which include fluoride chloride bromide and iodide These elements can corrode heat exc...

Page 7: ...instructions A return air duct is provided sealed to the furnace casing and terminated outside the space containing the furnace This prevents a negative pressure condition as created by the circulating air blower causing a flame rollout and or drawing combustion products into the structure The furnace is controlled by a thermostat It may not be hot wired to provide heat continuously to the structu...

Page 8: ...bove return doors windows exhaust fans fireplace dampers and any other gas fired burning appliance to their previous conditions of use WARNING CARBON MONOXIDE POISONING HAZARD For all venting configurations for this appliance and other gas appliances placed into operation for the structure provisions for adequate combustion air and ventilation must be provided in accordance with U S A Installation...

Page 9: ...eld during the procedure These precautions will help to avoid exposing the control to electrostatic discharge by putting the furnace the control and the person at the same electrostatic potential 1 Disconnect all power to the furnace Multiple disconnects may be required DO NOT TOUCH THE CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY S ELECTROSTATIC CHARGE TO GROUND 2 F...

Page 10: ...nt must be supplied with air for fuel combustion Sufficient air must be provided to avoid negative pressure in the equipment room or space A positive seal must be made between the furnace cabinet and the return air duct to prevent pulling air from the burner area Place the unit so that proper venting can be achieved with a minimum number of elbows in accord with the instructions in this manual The...

Page 11: ... the back by 1 When installing the furnace in other orientation than the upflow position simply configure the condensate tubing accordingly with the instructions provided in this section of the manual Figure 5 Drain trap 4 2 UPFLOW ORIENTATION In the Upflow orientation the condensate trap can be to the right or to the left of the furnace The condensate drain must be routed from the trap through th...

Page 12: ... the drain trap to an additional condensate piping using a tee for an adequate drainage of the condensate DO NOT vent using the remaining three outlet stubs 8 Prime the drain trap with water This will ensure proper furnace drainage at startup and will avoid any recirculation of flue gas 9 On the remaining 3 outlet stub connect black vinyl cap 1x5 8 and 2x1 2 Those cap are furnished in the loose pa...

Page 13: ...collector and block the stubs with furnished 5 8 1 2 black caps 2 Remove the knock outs from the bottom middle side of the casing 3 Place the drain trap gasket on the drain trap 4 Screw in place the drain trap with 2 head tapping screws on the side of the furnace 5 Install two 1 2 black plastic cap on the stubs of the drain trap inside the furnace 6 Connect a piece of 5 8 PVC tube to the bottom le...

Page 14: ...orizontal left condensate drain connection 1 Remove the knock outs from the bottom middle side of the casing 2 Drill open the bottom stub of the ID blower if not already open Be sure to remove all debris 3 Reroute the ID blower drain tube from the bottom of the ID blower casing to one of the 1 2 stub Do not screw the drain trap to the furnace casing 4 Block the other open ID blower drain with a 1 ...

Page 15: ...f the furnace on 8 knock outs available Use the knock outs related to the furnace size as shown on Figure 4 Dimensional drawing This concerns the width of the return outlet 2 Install the return air inlet as per local codes 5 2 FILTER ARRANGEMENT There are no provisions for an internal filter rack in these furnaces An external filter is required 5 3 SUPPLY AIR DUCTS The supply air duct must be conn...

Page 16: ...al lining As an alternative fibrous ductwork may be used if constructed and installed in accordance with the latest edition of SMACNA construction standard on fibrous glass ducts Both acoustical lining and fibrous ductwork shall comply with NFPA 90B as tested by UL Standard 181 for Class 1 Rigid air ducts NOTE For horizontal applications the top most flange may be bent past 90 to allow the evapora...

Page 17: ...ed nipple into lower end of tee Capped nipple should extend below level of furnace gas controls Place a ground joint union between furnace gas control valve and exterior manual equipment gas shutoff valve Table 6 Maximum capacity of pipe in Ft of gas hr Nominal Iron pipe size in mm Internal dia in mm Length of pipe FT M 10 3 0 20 6 0 30 9 1 40 12 1 50 15 2 1 2 13 0 622 158 175 120 97 82 73 3 4 19 ...

Page 18: ...ly sized fuse or circuit breaker for this furnace See Table 8 Electrical data for wire size and fuse specifications A readily accessible means of electrical disconnect must be located within sight of the furnace Table 8 Electrical data Max Min 45 000 120 60 1 127 104 10 7 12 6 14 29 8 8 15 60 000 120 60 1 127 104 13 1 15 6 12 36 11 0 20 75 000 120 60 1 127 104 13 1 15 6 12 36 11 0 20 105 000 120 6...

Page 19: ...n sinusoidal may damage the furnace electronics or cause erratic operation Contact the alternate power supply manufacturer for specifications and details 7 5 BLOWER SPEEDS 4 SPEED PSC MOTOR Furnace with model number CXX 1 D and CXX 2 D are equipped with a multi speed circulator blower This blower provides ease in adjusting blower speeds See airflow tables in annexe for the relation between CFM and...

Page 20: ...20 Figure 16 Wiring diagram One stage PSC ...

Page 21: ...21 Figure 17 Two Stage PSC Furnace Control ...

Page 22: ...22 Figure 18 Two Stage ECM Furnace Control ...

Page 23: ...or cement beyond its expiration date The safe operation as defined by ULC S636 of the vent system is based on following these installation instructions the vent system manufacturer s installation instructions and proper use of primer and cement All fire stop and roof flashing used with this system must be UL listed material Acceptability under Canadian standard CAN CSA B149 is dependent upon full ...

Page 24: ... Combustion and Ventilation and applicable provisions of the local building codes Canada Part 8 of the CAN CSA B149 1 2010 Venting Systems and Air Supply for Appliances 8 5 1 TERMINATION REQUIREMENTS FOR THE PROVINCE OF ALBERTA AND SASKATCHEWAN The Provinces of Alberta and Saskatchewan require a minimum unobstructed distance of 4 ft 1 2 M from the foundation to the property line of the adjacent lo...

Page 25: ...runs where water may collect wrap the vent pipe with self regulating 3 or 5 Watt heat tape The heat tape must be U L CSA listed and installed per the manufacturer s instructions 13 All piping between the furnace and the roof or outside wall penetration is between 2 and 3 The Table 11 and Table 13 Deduction for fitting list the maximum allowable length for the exhaust vent pipe and intake air pipe ...

Page 26: ...26 Figure 21 Direct venting Figure 22 Multi venting ...

Page 27: ...p 5 Tee 1 5 Table 14 Approved combustion air and vent pipe fitting and cement materials U S A Installation ASTM SPECIFICATION MARKED ON MATERIAL MATERIAL PIPE FITTINGS SOLVENT CEMENT AND PRIMERS DESCRIPTION D1527 ABS PIPE Schedule 40 D1765 PVC PIPE Schedule 40 D2235 For ABS Solvent Cement For ABS D2241 PVC PIPE SDR 21 SDR 26 D2466 PVC Fittings Schedule 40 D2468 ABS Fittings Schedule 40 D2564 For A...

Page 28: ...y generous layer of cement primer to pipe fitting socket and end of pipe to insertion mark Quickly apply approved cement to end of pipe and fitting socket over primer Apply cement in a light uniform coat on inside of socket to prevent build up of excess cement Apply second coat 11 While cement is still wet twist pipe into socket with in turn Be sure pipe is fully inserted into fitting socket 12 Wi...

Page 29: ...raft blower must maintain at least the negative pressure switch set point for the furnace to operate If the induced draft blower fails to close or maintain the closing of the negative pressure switch a no heat call would result 1 Remove the burner compartment control access door 2 IMPORTANT Be sure that the manual gas control has been in the OFF position for at least five minutes Do not attempt to...

Page 30: ...tion of one second or longer Refer to SYSTEM LOCKOUT FEATURES 9 4 2 Cool mode In a typical system a call for cool is initiated by closing the thermostat contacts This energizes the 50A55 control and the compressor The cool delay to fan on period begins After the delay period ends the optional electronic air cleaner is energized and the circulator fan is energized at cool speed After the thermostat...

Page 31: ...ttempted before the control goes into system lockout If flame is established for more than 10 seconds after ignition the 50M51 controller will clear the ignition attempt or retry counter If flame is lost after 10 seconds the control will restart the ignition sequence A momentary loss of gas supply flame blowout or a shorted or open condition in the flame probe circuit will be sensed within 2 secon...

Page 32: ...ming DIP switches S7 3 and S7 4 see table above configure the number of seconds the blower will run after the call for heat ends Factory default is 90 seconds Heat pump and de humidification Table 21 DIP Switches Heat pump systems DIP switch S5 1 see table above is set to On from the factory for use with conventional non Heat Pump systems For heat pump systems move the S5 1 DIP switch to the Off p...

Page 33: ...e thermostat for a period of between 1 second and less 20 seconds If flame is sensed with the gas valve de energized interrupting the call for heat at the thermostat will not reset the control 9 7 4 Auto restart After one 1 hour of internal or external lockout the control will automatically reset itself and go into an auto restart purge for 15 seconds 9 7 5 Diagnostic features The control continuo...

Page 34: ...etries listed above and verify valve is not dropping out allowing flame to be established and then lost 9 Grounding or Reversed polarity Verify the control and furnace are properly grounded Check and reverse polarity primary if incorrect 10 Module gas valve contacts energized with no call for heat Verify valve is not receiving voltage from a short If a valve wiring is correct and condition persist...

Page 35: ... equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand Before operating smell around furnace area for gas Be sure to smell near floor because some gas is heavier than air and will settle to the lowest point See WHAT TO DO IF YOU SMELL GAS on page 44 if the odour of gas is present Use only your hand to turn the gas control knob never use too...

Page 36: ... the bottom of the furnace 11 2 LUBRICATION Lubrication of the bearings in the circulating air blower motor and the combustion blower motor is not recommended 11 3 BURNER FLAME While the furnace is in operation observe the burner flames Compare these observations to Figure 24 to determine if proper flame adjustment is present If your observations indicate improper flame adjustment call your author...

Page 37: ...37 Figure 25 Part list 1 Stage PSC ...

Page 38: ...38 Figure 26 Part list 1 Stage PSC continued ...

Page 39: ...2 B40512 03 B40512 03 23 Blower rail B40552 B40552 B40552 B40552 B40552 24 Door switch L07H001 L07H001 L07H001 L07H001 L07H001 25 Dettson oberservation port B40565 B40565 B40565 B40565 B40565 26 Observation port L04Z022 L04Z022 L04Z022 L04Z022 L04Z022 27 Grommet G14F017 G14F017 G14F017 G14F017 G14F017 28 Pressure switch support B40560 B40560 B40560 B40560 B40560 29 Pressure switch multiposition R9...

Page 40: ...012 R01H012 R01H012 R01H012 62 ID blower and elbow assembly B40766 01 B40766 01 B40766 01 B40766 01 63 ID blower elbow B40818 B40818 B40818 B40818 64 extruded seal B04435 01 B04435 01 B04435 01 B04435 01 B04435 01 Options Bottom return base B40691 01 B40691 02 B40691 02 B40691 03 B40691 03 Downflow base B40632 01 B40632 02 B40632 02 B40632 03 B40632 03 transition for A coil B40693 01 B40693 02 B40...

Page 41: ...41 Figure 27 Part list 2 Stage PSC ...

Page 42: ...42 Figure 28 Part list 2 stage PCS continued ...

Page 43: ...B40578 02 B40578 02 B40578 02 23 Top panel assembly B40512 01 B40512 02 B40512 02 B40512 03 B40512 03 24 Blower rail B40552 B40552 B40552 B40552 B40552 25 Door switch L07H001 L07H001 L07H001 L07H001 L07H001 26 Observation port Dettson B40565 B40565 B40565 B40565 B40565 27 Observation port L04Z022 L04Z022 L04Z022 L04Z022 L04Z022 28 Grommet G14F017 G14F017 G14F017 G14F017 G14F017 29 Pressure switch ...

Page 44: ...62 Transformer 120v 24v L01F009 L01F009 L01F009 L01F009 L01F009 63 ID blower and elbow assembly B40766 02 B40766 02 B40766 02 B40766 02 64 ID blower elbow B40818 B40818 B40818 B40818 65 Extruded seal B04435 01 B04435 01 B04435 01 B04435 01 B04435 01 Options C45 2 D C60 2 D C75 2 D C105 2 D C120 2 D Bottom return base B40691 01 B40691 02 B40691 02 B40691 03 B40691 03 Downflow base B40632 01 B40632 ...

Page 45: ...45 Figure 29 Part list X13 ...

Page 46: ...46 Figure 30 Part list X13 continued ...

Page 47: ...rservation port B40565 B40565 B40565 B40565 B40565 26 Observation port L04Z022 L04Z022 L04Z022 L04Z022 L04Z022 27 Grommet G14F017 G14F017 G14F017 G14F017 G14F017 28 Pressure switch support B40560 B40560 B40560 B40560 B40560 29 Pressure switch multiposition R99F035 R99F035 R99F035 R99F035 R99F035 30 Pressure switch R99F043 R99F042 R99F048 R99F039 R99F039 31 Drain trap gasket B40568 B40568 B40568 B4...

Page 48: ...40818 B40818 B40818 64 extruded seal B04435 01 B04435 01 B04435 01 B04435 01 B04435 01 Options C45 1 D C60 1 D C75 1 D C105 1 D C120 1 D Bottom return base B40691 01 B40691 02 B40691 02 B40691 03 B40691 03 Downflow base B40632 01 B40632 02 B40632 02 B40632 03 B40632 03 transition for A coil B40693 01 B40693 02 B40693 02 B40693 03 B40693 03 Conversion kit for propane B40574 07 B40574 10 B40574 13 B...

Page 49: ...49 Figure 31 Part list 2 Stage ECM ...

Page 50: ...50 Figure 32 Part list 2 Stage ECM continued ...

Page 51: ...2 03 B40512 03 25 Blower rail B40552 B40552 B40552 B40552 B40552 26 Blower switch L07H001 L07H001 L07H001 L07H001 L07H001 27 Observation port Dettson B40565 B40565 B40565 B40565 B40565 28 Observation port L04Z022 L04Z022 L04Z022 L04Z022 L04Z022 29 Gromment G14F017 G14F017 G14F017 G14F017 G14F017 30 Pressure switch support B40560 B40560 B40560 B40560 B40560 31 Pressure switch multiposition R99F035 ...

Page 52: ...40818 B40818 64 Extruded seal B04435 01 B04435 01 B04435 01 B04435 01 B04435 01 Options C45 2 V C60 2 V C75 2 V C105 2 V C120 2 V Bottom return base B40691 01 B40691 02 B40691 02 B40691 03 B40691 03 Downflow base B40632 01 B40632 02 B40632 02 B40632 03 B40632 03 transition for A coil B40693 01 B40693 02 B40693 02 B40693 03 B40693 03 Conversion kit for propane B40574 08 B40574 11 B40574 14 B40574 2...

Page 53: ...age Heating Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 730 715 705 690 690 685 680 670 670 665 B 915 890 865 850 845 845 840 835 830 810 C 740 725 710 700 700 690 685 685 680 670 D 655 640 635 630 625 620 615 605 600 590 Table 30 CFM in cooling for 45 000 BTU 2 stage ECM motor 1st stage Cooling Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 893 895 880...

Page 54: ...ure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 1127 1125 1120 1110 1100 1100 1090 1080 1075 1075 B 1363 1352 1355 1350 1340 1335 1325 1315 1305 1265 C 1254 1250 1230 1230 1220 1220 1215 1205 1195 1190 D 1183 1180 1180 1175 1165 1165 1160 1155 1150 1140 Table 33 CFM in cooling for 60 000 BTU 2 stage ECM motor 1st stage Cooling Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 1308 13...

Page 55: ...eed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 1430 1428 1425 1415 1385 1345 1320 1300 1255 1225 B 1578 1573 1570 1495 1425 1365 1325 1310 1285 1245 C 1440 1436 1430 1445 1435 1385 1365 1335 1300 1260 D 1487 1485 1465 1440 1380 1360 1330 1300 1260 1225 Table 36 CFM in cooling for 75 000 BTU 2 stage ECM motor 1st stage Cooling Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8...

Page 56: ...eed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 1765 1760 1750 1720 1725 1705 1665 1620 1565 1525 B 1873 1854 1850 1830 1775 1700 1660 1610 1555 1515 C 1888 1874 1860 1825 1770 1705 1655 1610 1555 1520 D 1655 1645 1650 1650 1650 1640 1625 1605 1555 1515 Table 39 CFM in cooling for 105 000 BTU 2 stage ECM motor 1st stage Cooling Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 ...

Page 57: ...eed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 A 2030 2026 1985 1905 1850 1790 1750 1705 1625 1580 B 2020 2019 1955 1920 1850 1780 1730 1700 1615 1565 C 2030 2021 1955 1920 1850 1780 1730 1700 1615 1565 D 2033 2019 1950 1920 1865 1780 1730 1710 1615 1565 Table 42 CFM in cooling for 120 000 BTU 2 stage ECM motor 1st stage Cooling Motor speed Static pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 ...

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