Table of Contents
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Installer's Guide
Upflow/ Horizontal and Downflow/ Horizontal,
Gas-Fired, Direct Vent, Variable Speed Inducer,
Modulating Condensing Communicating Furnaces
*UHMB060ACV3VB
*UHMB080ACV3VB
*UHMC100ACV4VB
*UHMD120ACV5VB
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
NOTE:
This furnace can be configured for Communicating or 24 VAC modes. Using fully Communicating or 24 VAC
modes, the furnace can support single or multi-stage heat pump, AC, or heating only applications. Combined with
a communicating Comfort Control only, the furnace will support a single stage 24 VAC cooling outdoor unit only.
1. Safety signal words are used to designate a degree or level of seriousness associated with a particular hazard.
2. The signal words for safety markings are WARNING, and CAUTION.
3. a. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
4. b. CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It
is also used to alert against unsafe practices and hazards involving only property damage.
Please return to service information pack upon completion of work.
*UHM
UPFLOW
UPFLOW/HORIZONTAL
*DHMB060BCV3VB
*DHMB080ACV3VB
*DHMC100ACV4VB
*DHMD120BCV5VB
*DHM
DOWNFLOW/HORIZONTAL
18-CD30D1-12
* First letter may be "A" or "T"
DOWNFLOW
A341624P14
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Table of Contents
Related Manuals for Trane UHMB060ACV3VB
Summary of Contents for Trane UHMB060ACV3VB
- Page 1 18-CD30D1-12 Installer’s Guide Upflow/ Horizontal and Downflow/ Horizontal, Gas-Fired, Direct Vent, Variable Speed Inducer, Modulating Condensing Communicating Furnaces *UHMB060ACV3VB *DHMB060BCV3VB * First letter may be “A” or “T" *DHMB080ACV3VB *UHMB080ACV3VB *UHMC100ACV4VB *DHMC100ACV4VB *UHMD120ACV5VB *DHMD120BCV5VB ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT —...
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Page 2: Safety Section
Personal injury may result. Exposure to fuel substances or by-products of incomplete fuel combustion is believed by the state of California to cause cancer, birth defects, or other reproductive harm. 18-CD30D1-12 © 2013 Trane All Rights Reserved... -
Page 3: Table Of Contents
Installer’s Guide Contents WARNING EXPLOSION HAZARD! NEVER USE AN OPEN FLAME TO DETECT GAS Safety Section ..............2 LEAKS. EXPLOSIVE CONDITIONS MAY OCCUR. USE Outline Drawing ..............4 A LEAK TEST SOLUTION OR OTHER APPROVED Locations and Clearances ............ 6 METHODS FOR LEAK TESTING. -
Page 4: Outline Drawing
Installer’s Guide 18-CD30D1-12... - Page 5 Installer’s Guide 18-CD30D1-12...
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Page 6: Locations And Clearances
Installer’s Guide 7. When a furnace is installed so that supply ducts carry 4. Are there at least 3 inches of clearance between the air circulated by the furnace to areas outside the furnace combustion air openings in the front panel space containing the furnace, the return air shall also and any closed panel or door provided? be handled by a duct(s) sealed to the furnace casing... -
Page 7: Upflow Installation
Installer’s Guide DOWNFLOW INSTALLATIONS WARNING REQUIRED FLOOR OPENING: (DOWNFLOW) SAFETY HAZARD SEE FIGURE 2 AND FIGURE 3, AND TABLE 1 DO NOT INSTALL THE FURNACE DIRECTLY ON CARPETING, TILE OTHER COMBUSTIBLE HORIZONTAL INSTALLATION MATERIAL OTHER THAN WOOD FLOORING. FOR IMPORTANT: VERTICAL DOWNFLOW APPLICATIONS, SUBBASE The 2/4TXC cased coil must be placed downstream of the (BAYBASE205) -
Page 8: Air For Combustion And Ventilation
Installer’s Guide OUTSIDE AIR IS RECOMMENDED The use of indoor air for most applications is acceptable, unless there is the presence of corrosive chemicals or contamination. Certain types of installation will require the use of outside air for combustion. The following types of installations will require use of OUTDOOR AIR for combustion, due to chemical UPFLOW/ exposures:... -
Page 9: Duct Connections
Installer’s Guide CONFINED SPACE Confined spaces are installations with less than 50 cu. ft. of space per 1000 BTU/hr input from all equipment installed. Air for combustion and ventilation requirements can be supplied from inside the building as in Figure 8 or from the outdoors, as in Figure 9. - Page 10 Installer’s Guide With a parallel flow arrangement, the dampers or other PREPARATION FOR UPFLOW BOTTOM AND SIDE means used to control flow of air shall be adequate to RETURN AIR FILTER INSTALLATION prevent chilled air from entering the Furnace, and if All return air duct systems should provide for installation manually operated, must be equipped with means to of return air filters.
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Page 11: Return Air Filters
Installer’s Guide Rotate the channel downward (or remove by lowering the front edge of the channel and pulling forward). Slide the bottom return air panel out of the cabinet. Rotate the front channel to its original position and reinstall the two 5/16” screws. 8. - Page 12 Installer’s Guide ALTERNATE FILTER RACK INSTALLATION FOR BOTTOM ENGAGEMENT BOTTOM RETURN - BAYRACK960 The following checklist should be used when installing a Filter Rack bottom return filter on an upflow furnace: Retaining Furnace Screw/Pin a. Remove the filter. Filter Cabinet Rack b.
- Page 13 FLTR203, 204, or 205 used for Upflow Horizontal furnaces. Typical Horizontal Filter Installation Table 4A CONVERSION KITS FOR HORIZONTAL FILTERS CABINET CONVERSION MODEL NUMBERS WIDTH KIT NUMBER *UHMB060ACV3VB 17-1/2" BAYFLTR203 *UHMB080ACV3VB ALTERNATE SIDE 21" BAYFLTR204 *UHMC100ACV4VB FILTER CLIPS LOCATIONS 24-1/2"...
- Page 14 Installer’s Guide Downflow furnace filters must be located outside the INSTALLING THE FILTER furnace cabinet. Typical installations are shown in Figure The filter may need to be cut to fit the unit depending on 22. Tables 6 and 7 provide information for installation the location of the return air filter.
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Page 15: General Venting Information
Installer’s Guide GENERAL VENTING INFORMATION WARNING THIS FURNACE MUST VENTED CARBON MONOXIDE POISONING HAZARD OUTDOORS. THESE FURNACES ARE INDUCED DRAFT VENTED AND MUST NOT BE CONNECTED TO Failure to follow the steps outlined below for each appliance connected to the venting system being ANY VENT SERVING ANOTHER APPLIANCE. - Page 16 Installer’s Guide For NONDIRECT VENT APPLICATION: The furnace shall 2" TO 3" COUPLING be vented to the exterior of the house, but combustion #CPL00938 air may enter from the surrounding area as long as combustion air requirements are met. (See AIR FOR COMBUSTION AND VENTILATION).
- Page 17 Installer’s Guide EX. 2 — NOTE: If only the flue gas pipe is to the outside of the Example 2 shows the vent pipe exhausting through the structure, a straight section of pipe (long enough to roof and the inlet air coming from the interior of the house exit the Furnace cabinet) must be attached to the inlet (See Note).
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Page 18: Venting Materials
Installer’s Guide TABLE 9 PVC VENT FITTING MATERIAL These fittings are available from your Gas Furnace Distributors for U.S. appli- cations only. KIT02282 KIT02281 PLASTIC PIPE DESIGNATIONS ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING F891 CELLULAR CORE *158 ASTM F891 D2665 DWV PIPE **158... -
Page 19: Vent Length Table
Installer’s Guide TABLE 10 VENT LENGTH TABLE - MODULATING FURNACE MAXIMUM TOTAL EQUIVALENT LENGTH IN FEET FOR VENT AND INLET ALTITUDE AIR (SEE NOTES) 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE 0-7000 Feet NATURAL GAS PROPANE NATURAL GAS PROPANE NATURAL GAS... -
Page 20: Venting Through The Roof
Installer’s Guide VENTING THROUGH THE ROOF WARNING When penetrating roof with a 2" PVC Vent Pipe, a 2" CARBON MONOXIDE POISONING HAZARD electrical conduit flashing may be used for a weather DO NOT REPLACE ANY OF THE FACTORY SUPPLIED tight seal. Lubricate flexible seal on flashing before PVC VENTING COMPONENTS WITH FIELD FABRICATED pipe is pushed through the seal. -
Page 21: Horizontal Venting Through The Wall
Installer’s Guide chimney venting option. When wall venting is used on HORIZONTAL VENTING THROUGH WALL any surface that can be affected by this moisture, it is rec- IMPORTANT: ommended that a corrosion resistant shield (24 inches The building owner/maintenance provider must keep square) be used behind the Vent Terminal. - Page 22 Installer’s Guide IMPORTANT: 4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector The Commonwealth of Massachusetts requires compliance observes carbon monoxide detectors and signage installed with regulation 248 CMR 4.00 and 5.00 for installation of in accordance with the provisions of 248 CMR 5.08(2)(a)1 through –...
- Page 23 Installer’s Guide ANCHORS 12" MIN TO (4 req.) OVERHANG VENT PLATE VENT 1" + " 3.2" 12" MINIMUM TO OVERHANG COMBUSTION COMBUSTION SCREWS VENT (4 req.) VENT MAINTAIN 12 IN. MINIMUM CLEARANCE VENT ABOVE HIGHEST MAINTAIN 12" MINIMUM CLEARANCE ANTICIPATED SHOW ABOVE HIGHEST ANTICIPATED SNOW LEVEL LEVEL OR GRADE OR GRADE WHICHEVER IS GREATER...
- Page 24 Installer’s Guide Table 11 Non-Direct Vent Terminal Clearances Canadian Installations US Installations Clearance above grade, veranda, porch, deck, 12 inches (30 cm) 12 inches (30 cm) or balcony 6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) 4 feet (1.2m) below or to the side of opening;...
- Page 25 Installer’s Guide NOTE: VENT AND INLET MUST BE SUPPORTED AT A MAXIMUM OF 3' INTERVALS STRAPS OR OTHER SUITABLE SUPPORTS AT A MAXIMUM OF 3' 0" INTERVALS BAYAIR30AVENTA COMBUSTION STRAP (FIELD SUPPLIED) RAIN CAP VENT VENT 1" + 1/2" ELBOW COMBUSTION AIR (FIELD SUPPLIED)
- Page 26 Installer’s Guide SUPPORT HORIZONTAL PIPE EVERY 3' 0" WITH THE FIRST SUPPORT AS CLOSE TO THE FURNACE AS POSSIBLE. INDUCED DRAFT BLOWER, HOUSING, AND FURNACE MUST NOT SUPPORT THE WEIGHT OF THE FLUE PIPE. REMOVE RIBS FROM CAP VENT 12 INCHES MIN. CLEARANCE MUST BE MAINTAINED ABOVE HIGHEST ANTICIPATED SNOW LEVEL.
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Page 27: Venting Routed Through A Masonry Chimney
Installer’s Guide PVC PLASTIC VENTING TYPE 29-4C STAINLESS STEEL VENTING THROUGH UNUSED CHIMNEY THROUGH UNUSED CHIMNEY IMPORTANT – IMPORTANT – Refer to Section 12.6.8 of NFPA 54 / ANSI 223.1 2012 Refer to Section 12.6.8 of NFPA 54 / ANSI 223.1 2012 when routing vent piping through a chimney. -
Page 28: Electrical Connections
Installer’s Guide ELECTRICAL CONNECTIONS WHOLE HOUSE AIR CLEANER CONNECTION CAUTION NOTE: Protect from Property Damage The B/C terminal will require three wires to be con- Do NOT connect the furnace line voltage to a GFCI nected to the low voltage terminal strip. To make this protected circuit. - Page 29 Installer’s Guide 41B - Communicating Indoor Unit with Communicating Comfort Control and 24VAC Single Stage Cooling 41C - 24 VAC Mode Indoor Unit with 24 VAC Comfort Control and 24VAC Single Stage Cooling 18-CD30D1-12 FIELD WIRING DIAGRAMS...
- Page 30 Installer’s Guide Field Wiring Diagrams continued 41D - 24 VAC Mode Indoor Unit with 24 VAC Comfort Control and 24VAC 2-Stage or 2-Step Cooling 41E - 24 VAC Mode Indoor Unit with 24 VAC Comfort Control and 24VAC Single Stage Heat Pump 18-CD30D1-12...
- Page 31 Installer’s Guide 41F - 24 VAC Mode Indoor Unit with 24 VAC Comfort Control and 24VAC 2-Stage or 2-Step Heat Pump 41G - Humidistat Hookup - 24 V Mode ONLY BK Jumper The factory installed jumper between "R" and "BK" on the circuit board must be cut if an optional humidistat is installed.
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Page 32: Condensate Drain Instructions
Installer’s Guide CONDENSATE DRAIN INSTRUCTIONS VERTICAL APPLICATIONS Upflow Vertical Furnace - The connection tubing for left CAUTION and right side drainage is shipped in the blower compart- It is recommended that an external overflow drain pan ment. Install the connection tubing from the trap to the be installed under the furnace to prevent property side of the unit and trim all excess tubing to avoid kinks. - Page 33 Installer’s Guide Downflow Vertical Furnace - Downflow furnace - Use The furnace trap must be repositioned to the exterior of RTV silicon sealant to connect the fitting to the trap for the cabinet. Remove the trap from its present location ease of removal when cleaning the trap.
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Page 34: Gas Piping
Installer’s Guide GAS PIPING WARNING FIRE - EXPLOSION HAZARD DO NOT RUN FLEXIBLE GAS LINE THROUGH THE FURNACE CABINET WALL OR WITHIN THE FURNACE CABINET. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN PROPERTY DAMAGE, SERIOUS PERSONAL INJURY, OR DEATH. CAUTION Use a backup wrench on the Gas Valve when installing Gas Piping to prevent damage to the Gas Valve and... - Page 35 Installer’s Guide AUTOMATIC GAS VALVE AUTOMATIC GAS VALVE IMPORTANT: WITH MANUAL SHUT-OFF WITH MANUAL SHUT-OFF sediment trap must be installed in the gas line be- fore furnace gas valve. The sed- iment trap must be located as close to DRIP DRIP DRIP LEG the furnace cabinet...
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Page 36: Combustion And Input Check
Installer’s Guide COMBUSTION AND INPUT CHECK HIGH ALTITUDE DERATE (SEE ALSO HIGH ALTITUDE DERATE) CAUTION NOTE: Before checking or adjusting the gas pressure, CAUTION make sure the condensate trap has been primed. Maintain manifold pressure as specified in Table 15 1. - Page 37 Installer’s Guide If the desired input rate cannot be achieved with a TABLE 18 change in manifold pressure, then the orifices must be GAS FLOW IN CUBIC FEET PER HOUR changed. See Table 16 for replacement orifice part num- 2 CUBIC FOOT DIAL bers.
- Page 38 Installer’s Guide To Pressure Switch PS-1 ! Important ! Brass orifices located in these two legs. H-Fitting must be installed in this orientation. VACUUM HOSE Burner Box ROUTING Pressure Switch PS-1 Orifice in H fitting must be pointing away from PS1 H-Fitting Pressure Switch PS-3...
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Page 39: Start-Up And Adjustment
Installer’s Guide for any gas that might have escaped to dissipate. LP Gas REINSTALLATION OF THE BURNER BOX COVER being heavier than air may require forced ventilation. Turn Figure 55 shows the correct way to reinstall the Burner the toggle switch on the Gas Valve in the unit to the “ON” Box cover if adjustment or replacement of the Flame position. -
Page 40: User Interface Menu
Installer’s Guide 1. Remove Blower Door panel by turning the two door USER INTERFACE MENU latches. 2. Lower door panel and remove from service access area. SERVICE PROCEDURE TO ACCESS 3. Use one hand depress the door switch (there must be USER INTERFACE FOR THE MODULATING FURNACE power to the control system for the display assembly to This procedure should only be performed by trained service... - Page 41 Installer’s Guide TABLE 20 - USER INTERFACE MENU Power Up == WAIT == A/TCONT900 Variable Speed Standy Screen System Status Setup Options [ ] = Current Setting MODEL NUMBER CMFRT CNT MODE SERIAL NUMBER COMM [COMM] 24VAC * Unit specific COOLING CFM 2 COOLING CFM A/TUHMB060...
- Page 42 Installer’s Guide TABLE 20 - USER INTERFACE MENU - 24VOLT MENU (CONTINUED) 24V Variable Speed System Status Setup Options [ ] = Current Setting CMFRT CNT MODE COMM [24VAC] 24VAC * Unit specific A/TUHMB060 3T [3T] 1.5T 2T 2.5T COOLING CFM 2 COOLING CFM A/TUHMB080 3T [3T] 3.5T 2T 2.5T...
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Page 43: Sequence Of Operation
Installer’s Guide SEQUENCE OF OPERATION reduction of the vent motor speed in steps allows the gas flow through the gas valve to also be reduced SEQUENCE OF OPERATION – COMMUNICATING in steps, decreasing the chance of burner flame out. MODE The minimum capacity change is 1%. - Page 44 Installer’s Guide SEQUENCE OF OPERATION – 24VAC Mode Thermostat call for W2 after W1 1. This furnace modulates between 40% and 100% of 12. R and W2 thermostat contacts close signaling a call capacity, in 3% increments, every 1 minute. The for W2 heat.
- Page 45 Installer’s Guide the furnace three times to try and verify a flame. If no flame is detected, the IFC will lockout for one hour. The IFC will send an alert code to the communicating comfort control (ERR 22) and User Interface (RETRY LO) as well as flash its Red alert LED two times repeatedly.
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Page 46: Unit Test Mode
Installer’s Guide UNIT TEST MODE B) GAS VALVE SETUP (MANIFOLD PRESSURE ADJUSTMENT) A) SIMPLE NOTE: To obtain an accurate manifold pressure mea- Note: surement ,the manifold pressure must be referenced Stage 1 = 40% (low) heat, Stage 2 = 100% (high) heat to the burner box, since the burner box pressure tap A qualified technician can cycle the Variable Speed equalizes the gas valve pressure regulator. - Page 47 Installer’s Guide CORRECT METHOD OF CHECKING DIRECT VENT MANIFOLD PRESSURE WITH BURNER BOX REFERENCED WARNING EXPLOSION HAZARD REPLACE AND/OR TIGHTEN ALL PLUGS REMOVED OR LOOSENED WHEN ADJUSTING GAS PRESSURE. LEAK CHECK THE FITTINGS BEFORE PLACING INTO Slope REGULAR SERVICE. Gauge FAILURE TO FOLLOW THIS WARNING COULD RESULT IN SERIOUS PERSONAL INJURY,...
- Page 48 Installer’s Guide 100% (HIGH) HEAT ADJUSTMENT: COUNTERCLOCK- h. Allow 5 minutes to pass before attempting to adjust WISE TO DECREASE MANIFOLD PRESSURE OR the 40% manifold pressure. This will insure that the CLOCKWISE TO INCREASE MANIFOLD PRESSURE. learning routine is complete and that the heat rise is stable.
- Page 49 Installer’s Guide TABLE 22 STAND ALONE OPERATION (CONTINGENCY MODE) The Contingency Mode allows the installer to set the Furnace FINAL NG MANIFOLD PRESSURE SETTINGS (inches equipment to operate in an ON/ OFF Duty Cycle mode. Input rate w.c.) This mode will be activated using the User Interface. (KBTU/ 100% Contingency Mode is NOT available in 24VAC mode.
- Page 50 Installer’s Guide • Start and NO [NO] will now be displayed. With a NO/NO IFC INDUCER LEARNING ROUTINE SEQUENCE question being asked, use the or arrows to select the • The furnace IFC will go through an inducer learning routine YES and then press the ENTER button.
- Page 51 Installer’s Guide PS-3 INDUCER LEARNING ROUTINE NOTE: The furnace lights at approximately 65% of capacity. • When the furnace IFC receives a digital signal for 100% • When the burner flame is detected by the furnace IFC, a (high) heat from the comfort control it will begin the forty-five second time delay for indoor blower operation PS-3 inducer learning routine.
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Page 52: Control And Safety Switch Adjustments
Installer’s Guide CONTROL AND SAFETY SWITCH WARNING ADJUSTMENTS ELECTRICAL SHOCK HAZARD LIMIT SWITCH CHECK OUT DISCONNECT POWER TO THE UNIT BEFORE REMOV- The Limit Switch is a safety device designed to close the ING THE BLOWER DOOR. ALLOW A MINIMUM OF 10 Gas Valve should the Furnace become overheated. -
Page 53: Conditions Effecting Furnace Operation
Installer’s Guide CONDITIONS AFFECTING FURNACE 3. POWER FAILURE If there is a power failure during a Heating Cycle, the OPERATION system will restart the Ignition Sequence automatically NOTE: when power is restored, if the Comfort Control still calls CONTINUOUS fan mode during COOLING operation for heat. -
Page 54: Alert Code Recovery
Installer’s Guide ALERT CODE RECOVERY Table 23 On power up, last 4 Alerts, if any, will be flashed on the Red Alert LED. The newest Alert detected will flash first DESCRIPTION FUNCTION and the oldest last. There will be a 2 second delay be- tween Alert Code flashes. -
Page 55: Furnace Alert Codes
Installer’s Guide Furnace Fault Codes TABLE 24- FURNACE REVISION: 9 CN: 9108T00 DATE: 2009-6-12 ALERT CODES Alert Notification Alert Alert Group Alert Description Code Fault LED COM LED User Interface Display Control Display Flame is off when flame should be RECYCLE detected. - Page 56 Literature Order Number 18-CD30D1-12 Number 18-CD30D1-12 Trane Supersedes 6200 Troup Highway Tyler, TX 75707 Date 01/13 The manufacturer has a policy of continuous product and product data improvement and reserves the right to For more information contact change design and specifications without notice.