CONDENSING GAS FURNACE INSTALLATION AND OPERATION MANUAL MODELS: CHB1-50N CHB1-75N CHB1-100N CHB1-125N CDB1-50N CDB1-75N CDB1-100N CDB1-125N : IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WHAT TO DO IF YOU SMELL GAS: • • • • • DO NOT TRY TO LIGHT ANY APPLIANCE.
I. SAFETY INFORMATION This and the following page contain reproductions of the various warning and instruction labels placed on the Thermo Pride Condensing Gas Furnaces. Please read and comply with the contents of these labels.
All installations and services must be performed by qualified service personnel. This and the previous page contain reproductions of the various warning and instruction labels placed on the Thermo Pride Condensing Gas Furnaces. Please read and comply with the contents of these labels. WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot.
All installations and services must be performed by qualified service personnel. The following safety information should be read, understood, and followed by the installer. 1. Use only with type of gas approved for this furnace. Refer to furnace rating plate. 2. Connect this furnace to an approved vent system only. Combustion products must be carried outdoors. Refer to Section III, D thru H, of this manual.
All installations and services must be performed by qualified service personnel. : The CHB1/CDB1 furnace models are sealed combustion design, which does not require an air shutter adjustment (air shutters are not used) for proper flame characteristics. Burner box access cover must always be secured with all screws in place and tightened before operating furnace. : Personal injury or property damage could result from repair or service of this furnace by anyone other than a qualified heating contractor.
All installations and services must be performed by qualified service personnel. INDEX SECTION I. II. III. IV. VI. VII. BEGINNING PAGE SAFETY INFORMATION FURNACE SPECIFICATIONS GENERAL INSTALLATION A. CODES AND CLEARANCES B. FURNACE LOCATION B1.CDB1 HORIZONTAL APPLICATION C. REPLACING EXISTING FURNACE FROM A COMMON VENT D. GENERAL REQUIREMENTS FOR VENTING CHB1/CDB1 E. SIDEWALL VENTING E1. SINGLE PIPE (SIDEWALL) VENTING OPTION F. INSTALLATION OF OUTSIDE VENT/AIR INTAKE TERMS. G.
All installations and services must be performed by qualified service personnel. II. FURNACE SPECIFICATIONS CHB1 SERIES MODEL NO. BTU/HR INPUT BTU/HR OUTPUT HT. OF CASING WIDTH OF CASING DEPTH OF CASING WARM AIR OUTLET RETURN AIR INLET DIA. OF FLUE DIA. OF COMBUSTION AIR INTAKE CFM @ .2” & .5” w.c. EXTERNAL STATIC PRESSURE @HI SPEED @MH SPEED @ML SPEED @LO SPEED TEMPERATURE RISE BLOWER MOTOR HP NO.
All installations and services must be performed by qualified service personnel. CDB1 SERIES MODEL NO. BTU/HR INPUT BTU/HR OUTPUT HT. OF CASING WIDTH OF CASING DEPTH OF CASING WARM AIR OUTLET RETURN AIR INLET DIA. OF FLUE DIA. OF COMBUSTION AIR INTAKE CFM @ .2” & .5” w.c.
All installations and services must be performed by qualified service personnel. INSTALLATION PARTS PACKAGES - CHB1-50/75 PARTS PACKAGE #S00S4405/4406 DESCRIPTION 2-3/8” ID radiator hose Thermostat lead bushing PVC trap assembly #8 x ¾ coated TEK screws for mounting trap & inlet/outlet collars 11/16” OD x 1/2” ID vinyl tubing 2 x 4 electrical J-box 2 x 4 electrical J-box cover #8 x ½ TEK screws for mounting 2 x 4 J-box #10-32 x ½ green ground screw #10-32 hex nut 3/16” dia.
All installations and services must be performed by qualified service personnel. Drain hose grommet Spring clamp, 11/16” Installation notice PVC tee assembly, 2 x 3” dia.
All installations and services must be performed by qualified service personnel. #8 x ½ TEK screws for mounting 2 x 4 J-box #10-32 x ½ green ground screw #10-32 hex nut 3/16” dia. star washer Grounding instructions Wire nut 3” stainless steel hose clamp J-box wire bushing Drain hose grommet Spring clamp, 11/16” Installation notice PVC tee assembly, 2 x 3” dia. PVC tee assembly, 2” dia. Pipe 2” dia.
All installations and services must be performed by qualified service personnel. 2. The BTU output capacity of the furnace proposed for installation should be based on a heat loss calculation made according to the manuals provided by the Air Conditioning Contractors of America (ACCA) or ASHRAE. 3. MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS TABLE 1 MODEL NO. CHB1-50 CHB1-75 CHB1-100 CHB1-125 CDB1-50 CDB1-75 CDB1-100 CDB1-125 FROM SIDES OF FURNACE & REAR 0 IN. 0 IN. 0 IN. 0 IN. 0 IN. 0 IN. 0 IN. 0 IN.
All installations and services must be performed by qualified service personnel. 4. This furnace must be connected to a drain in accordance with these instructions. If it is not practical to connect the unit to a drain, a condensate pump must be used and can be ordered as an accessory, part number 350225. If an acid neutralizer kit is required by local code or the customer, it is available under part number 320095. B1.
All installations and services must be performed by qualified service personnel. Figure 1 The horizontal furnace installation should be on a service platform large enough to allow for proper clearances on all sides and service access to the front of the furnace (See Table 1). If the furnace is suspended, it must be supported at both ends and in the middle with clearance allowed for removal of both access doors.
All installations and services must be performed by qualified service personnel. D. General Requirements For Venting Models CHB1 / CDB1 The CHB1 / CDB1 furnace venting system must be installed by a qualified service person in accordance with local installation codes and these instructions. In the absence of applicable local codes, conform to the National Fuel Gas Code, NFPA 54 /ANSI Z223.1-2002, or latest edition thereof. Installation shall, at least, conform to the following requirements. 1.
All installations and services must be performed by qualified service personnel. intake systems must be considered. This includes all elbows, or equivalent pipefittings, used inside the furnace jacket in addition to those used to construct the termination. Furthermore, a credit of 5-feet of straight pipe may be taken for each elbow, up to maximum of three (3) elbows, which is dropped from the maximum permissible number for each system.
All installations and services must be performed by qualified service personnel. NOTICE: The furnace model series CHB1 / CDB1 may be vented either through the sidewall or the roof. For sidewall instructions, continue to the following section. For roof venting, refer to Section III G, of this manual E. Direct Venting Through a Sidewall 1. Vent and combustion air pipes may pass through a maximum wall thickness of 18 inches. The minimum wall thickness is 2 inches.
All installations and services must be performed by qualified service personnel. Figure 3: Typical Relative Locations of Direct Vent Terminations When Sidewall Venting 3. Exhaust Vent Terminal Location Clearance Requirements a. The vent terminal shall be located at least 3-feet above any forced air inlet located within 10-feet. Refer to Figure 4 for a depiction of the minimum required clearances between vent terminations and building features according to the National Fuel Gas Code (NFGC). b.
All installations and services must be performed by qualified service personnel. Figure 4: NFGC Minimum Clearances Between the Vent Terminal and Various Building Features 4.
All installations and services must be performed by qualified service personnel. : Bushes, shrubs, or any vegetation that may restrict the flow of flue products must be kept away from vent and air intake terminations. Terminations must also be kept clear of any leaves, weeds, combustible materials, snow, and ice build-up. Avoid locating the vent terminal over areas where dripping of condensate, or small pools of acidic condensate, could create a problem.
All installations and services must be performed by qualified service personnel. 2. Measure and cut two (2), 2-inch diameter thermoplastic pipes 1-1/2 inches longer than the depth of the wall. (Cutting the pipe longer leaves a ¾ inch connection allowance at both ends of the pipe.) For 3-inch diameter PVC pipe, leave a 3-inch allowance for end connections. Using PVC pipe cement, glue a PVC elbow or coupling fitting to one (1) end of each pipe.
All installations and services must be performed by qualified service personnel. AOPS7488 / AOPS7489 CONENTRIC VENT KIT 370191 SIDE WALL VENT KIT VERTICAL HORIZONTAL Figure 6: Optional Direct Vent Kits for the CHB1 / CDB1 Model Series of Furnaces G. Connecting The Furnace To Roof Exhaust / Intake Terminations If it is not desirable, or feasible, to vent the furnace through a sidewall, it may be vertically vented through the roof.
All installations and services must be performed by qualified service personnel. H. Exhaust / Intake Piping And Condensate Drain Connections At Furnace 1. Figures 6B, 7, and 8 follow depicting typical exhaust vent and air intake connections for the furnace model series CHB1 and the CDB1, respectively, as well as a list of required parts to correctly install each system.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. Figure 8: Required Exhaust Vent and Air Intake Piping for CDB1 Furnace in Horizontal Applications. 2. Connecting The Exhaust Vent To The Inducer a. Slip the end of the 2-inch diameter PVC elbow (for the model CDX1 in horizontal applications, the 2inch diameter PVC tee assembly) over the outlet of the inducer blower assembly.
All installations and services must be performed by qualified service personnel. NOTICE: For models CDB1-100 and CDB1-125 used in horizontal applications, immediately transition from 2-inch to 3-inch diameter pipe by installing the 3-inch x 2-inch diameter PVC reducer just outside the furnace casing. The remainder of the venting system leading away from the furnace must be composed of 3-inch diameter PVC pipe and pipefittings only. Refer to item E in Figure 8. b.
All installations and services must be performed by qualified service personnel. PVC tee). Couple the drain tee assembly to the pre-cut 2-inch diameter PVC pipe using the reinforced rubber hose and the two (2) band clamps supplied. NOTICE: All PVC thermoplastic pipe must be supported beginning directly over the exhaust vent tee assembly, then every 4-feet thereafter, and at every joint.
All installations and services must be performed by qualified service personnel. DO NOT! SILICONE OR SEAL THIS CONNECTION IN ANYWAY. MUST BE LOOSE FIT WITH LEAKAGE BETWEEN PVC AND METAL COLLAR. Figure 12: Typical Internal Air Intake Piping Arrangement for All Furnace Models d. After trial fitting the entire combustion air intake system, use a PVC cement to glue all connections in place, except the length of pipe between the combustion air fitting on the burner box and the first fitting. e.
All installations and services must be performed by qualified service personnel. Figure 15. Condensate Trap Assembly Mounted On the Model Series CDB1 In a Downflow Application Figure 16. Condensate Trap Assembly Mounted On The Model Series CDB1 In RH Side Horizontal Application 2. Determine from which side of the furnace the condensate disposal line will be run.
All installations and services must be performed by qualified service personnel. NOTICE: On the model series CHB1 / CDB1 the condensate disposal line must be on the same side as the flue outlet or, in the case of a horizontal application, the bottom of unit. Drive two (2) #8 x 3/4 inch sheet metal screws with black protective coating (supplied with furnace) to attach the condensate trap to the furnace casing. Pilot holes are provided on both sides of the casing for mounting the trap.
All installations and services must be performed by qualified service personnel. 6. A condensate pump may be required when, a suitable drain is not present, the drain is above the trap outlet level on the furnace, or the drain line cannot be sloped downward its full length to the drain. • • • If gravity drainage of the condensate from the furnace to a drain is impractical for any of these reasons, a condensate pump (part # 350225) is available from Thermo Products.
All installations and services must be performed by qualified service personnel. Figure 18 2. A drip leg must be used on both LP and natural gas installations prior to the furnace in order to trap oil, condensate and other impurities which might otherwise lodge in the gas valve or plug the burner orifice. A drip leg shall be provided at the outlet of the gas meter when there is excessive condensation between the gas meter and the furnace.
All installations and services must be performed by qualified service personnel. 4. If the furnace is used in connection with an air conditioning evaporator coil, the furnace must be installed parallel with or on the upstream side of the coil, to prevent condensation in the heat exchanger. If the evaporator coil is installed with a parallel flow arrangement, dampers or other means to control flow of air should be installed to prevent chilled air from entering the furnace.
All installations and services must be performed by qualified service personnel. DUCT SIZES FOR HOMES, QUIET OFFICES, OR SIMILAR INSTALLATIONS TABLE 2A Each of the system components (trunk lines, take offs, runs and register and grill-free areas) must be properly sized and matched together to ensure the necessary air handling capacity of a duct system. A 12" x 8" duct with a 400 CFM capacity for example will not flow 400 CFM if the register(s) to which it connects only flow a total of 200 CFM.
All installations and services must be performed by qualified service personnel. K. FILTERS 1. CHB1 MODELS: HIGHBOYS It is necessary to cut the return air opening in the bottom or side casing depending upon the needs of the specific installation. NOTICE: If your CHB1 will require air delivery above 1800 CFM, it is advisable that both sides, a combination of 1 side and the bottom, or the bottom only be used for return air.
All installations and services must be performed by qualified service personnel. Figure 20 3. USE OF NON-THERMO PRIDE FILTER RETENTION MEANS If a method other than the Thermo Pride filter rack is selected for retention of the filter and/or use of a different filter type is desired, see Table 3 for minimum size guidelines for selecting a filter system for the CHB1 or CDB1 furnaces. MINIMUM FILTER AREA REQUIRED (LENGTH X WIDTH, SQ. IN.
All installations and services must be performed by qualified service personnel. FORMULA: (tons of cooling) x (400 CFM per ton) (144 square inches per foot) (max. air velocity of filter from table 3 for the filter type) = filter area sq.inches = length x width of filter in inches EXAMPLE: If you had a CHB1-100 furnace and 4 tons of cooling and a standard permanent filter. 4 tons x 400 CFM x 144 = 460 square inches for cooling 500 For heating a CHB1-100 needs 394 square inches of filter.
All installations and services must be performed by qualified service personnel. Anticipators for the heating operation are of two types, pre-set and adjustable. Those that are pre-set will not have an adjustment scale and are generally marked accordingly. 4. BLOWER MOTOR SPEED WIRING Figure 21 : TURN OFF THE ELECTRICAL POWER to the furnace before attempting to change blower speed wiring. A. The furnace is factory wired to the ignition control with standard heating and cooling speeds.
All installations and services must be performed by qualified service personnel. BLOWER DELAY SETTINGS To delay fan turn-on by: 15 sec. 30 sec. *45 sec. 60 sec, Set Switch #1 Off Off On On To delay fan turn-off by: 60 sec. 90 sec. *120 sec. 180 sec. #2 Off On Off On Set Switch #3 #4 On On Off On On Off Off Off *Factory Settings For Optimal Performance 5.
All installations and services must be performed by qualified service personnel. IV. STARTING THE UNIT A.
All installations and services must be performed by qualified service personnel. MAIN BURNER OPERATION CALL FOR HEAT SATISFIED AFTER DELAY-TO-FAN-ON PERIOD ENDS, CIRCULATING AIR FAN IS ENERGIZED AT HEATING SPEED. THE (OPTIONAL) ELECTRONIC AIR CLEANER AND HUMIDIFIER ARE ENERGIZED. W HEN THERMOSTAT IS SATISFIED, CONTACTS OPEN AND THE GAS VALVE IS DE-ENERGIZED. AFTER PROOF OF FLAME LOSS, INDUCER STARTS 5 SECOND POST SURGE AND (OPTIONAL) HUMIDIFIER ARE DE-ENERGIZED.
All installations and services must be performed by qualified service personnel. B. INITIAL START UP: This furnace does not have a pilot. It is equipped with a hot surface igniter, which automatically lights the burner. Do not attempt to light the burner by hand. Check the following items before the initial start-up. 1. 2. 3. 4. 5. 6. 7. Check all wiring for loose connections and proper hook up. Leak test gas piping connections.
All installations and services must be performed by qualified service personnel. FORMULA: BTU/CU FT X NUMBER OF CU FT X 3600 SECONDS = INPUT BTU/HR EAMPLE: 1025 BTU/CU FT X 2 CU FT X 3600 = 98,633 BTU INPUT 74.8 SECONDS Check for the model number of this furnace, its input, the type of gas and the manifold pressure on the information plate located on the vestibule panel behind the upper front panel.
All installations and services must be performed by qualified service personnel. Figure 22 : The CHB1/CDB1 furnace models are an in-shot burner design, which does not require an air shutter adjustment (air shutters are not used) for proper flame characteristics. Burner box access cover must always be secured with all screws in place and tightened before operating furnace. E.
All installations and services must be performed by qualified service personnel. V. INSTALLER'S INSTRUCTIONS TO USER: After completing the installation, the installer shall inform and/or demonstrate to the homeowner: 1. The location of all the instructions in the furnace and that these instructions and the users information manual must be kept along with instructions for any accessories in the plastic pouch on the inside of the furnace. 2.
All installations and services must be performed by qualified service personnel. VI. TROUBLESHOOTING NOTICE: BEFORE TROUBLESHOOTING, FAMILIARIZE YOURSELF WITH THE START UP AND CHECKOUT PROCEDURE. ALL INSTALLATION AND SERVICES MUST BE PERFORMED BY QUALIFIED HEATING CONTRACTORS. To assist you in troubleshooting this furnace, it is equipped with an integrated ignition control with diagnostics.
All installations and services must be performed by qualified service personnel. TROUBLESHOOTING GUIDE THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO CALL FOR HEAT. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL OPERATION. TO USE THIS DIAGRAM, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES.
All installations and services must be performed by qualified service personnel. Yes Yes IS THERE LINE VOLTAGE ACROSS INDUCER POWER TERMINALS "IND" & "IND N" AT THE INTEGRATED CONTROL? Yes No CHECK THE INTEGRATED CONTROL DIAGNOSTIC LED LAMP. RESET BY INTERRUPTING POWER TO CONTROL FOR MORE THAN ONE SECOND. IF LED STAYS ON CONTINUOUSLY, REPLACE INTEGRATED CONTROL. CHECK WIRING TO INDUCER AND IF OK, REPLACE INDUCER ASSEMBLY.
All installations and services must be performed by qualified service personnel. Yes AFTER GAS VALVE OPENS, DO THE BURNERS IGNITE? No CHECK FOR PROPER MANIFOLD PRESSURE. ADJUST TO 3.5" FOR NATURAL GAS OR 10.0" W C FOR LP GAS Yes Yes IS IGNITOR POSITIONED CORRECTLY? No REPOSITION TO CORRECT LOCATION. DO BURNERS STAY LIT PAST PROOF OF FLAME CHECK? Yes DOES THE INTEGRATED CONTROL ENERGIZE THE No CIRCULATING AIR BLOW ER AFTER THE 45 SECOND TIME DELAY.
All installations and services must be performed by qualified service personnel. Yes DOES SYSTEM RUN UNTIL THERMOSTAT IS SATISFIED? No IS LED LIGHT ON INTEGRATED CONTROL FLASHING? No CHECK ALL WIRING FOR LOOSE CONNECTIONS. Yes Yes DOES BURNER SHUT OFF WHEN THERMOSTAT IS SATISFIED? No CHECK FOR SHORT IN WIRE TO THERMOSTAT AND CORRECT IF NECESSARY.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. Appendix –A Replacement Parts List 1. Replacement parts list for CHB1-50, CHB1-75, CHB1-100 and CHB1-125.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. 2. Replacement parts list for CDB1-50, CDB1-75, CDB1-100 and CDB1-125.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel.