ALTA -120 Installation, Operating And Service Instructions
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ALTA -120 Installation, Operating And Service Instructions

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ALTA
Installation, Operating and Service Instructions for
Models:
• ALTA-120
• ALTA-150
• ALTA-180
Manual Contents
1.
Installer Read Before Proceeding . . . . . . . . . . .3
2.
3.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.
Locating Boiler . . . . . . . . . . . . . . . . . . . . . . . . . .8
6.
Preparing Boiler . . . . . . . . . . . . . . . . . . . . . . . .12
7.
General Venting . . . . . . . . . . . . . . . . . . . . . . . . .15
8.
Sidewall Direct Venting . . . . . . . . . . . . . . . . . . .22
9. Vertical Direct Venting . . . . . . . . . . . . . . . . . . .28
10. Heating System Piping . . . . . . . . . . . . . . . . . . .34
11. Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
12. Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
13. Condensate Disposal . . . . . . . . . . . . . . . . . . . .45
14. Start-up and Checkout . . . . . . . . . . . . . . . . . .46
15. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
16. Before Leaving Jobsite . . . . . . . . . . . . . . . . . .64
17. Service and Maintenance . . . . . . . . . . . . . . . . .65
18. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . .69
19. Internal Wiring Diagrams . . . . . . . . . . . . . . . . .84
20. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Appendix
D. Code Required Text . . . . . . . . . . . . . . . . . . . . . .97
TO THE INSTALLER:
Affix these instructions adjacent to boiler.
Provide model number and serial number when
seeking information and support.
TO THE HOMEOWNER:
Retain these instructions for future reference.
Contact heating installer or technician for all issues
and support.
Version en Español disponible en el web del fabricante.
This boiler must only be installed, serviced, or repaired by a qualified installer, service agency or gas supplier.
Improper installation, adjustment, alteration, service or maintenance can cause severe personal injury, death,
or substantial property damage. For assistance or additional information, consult a qualified installer, service
agency, or the gas supplier. Read these instruction carefully before installing.
110328-01 - 1/22
• Water Boiler
• Condensing
• Direct Vent Models
• Gas Fired
Page
www.usboiler.net
!
WARNING

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Summary of Contents for ALTA ALTA-120

  • Page 1: Table Of Contents

    Installation, Operating and Service Instructions for • Water Boiler • Condensing • Direct Vent Models Models: • Gas Fired • ALTA-120 • ALTA-150 • ALTA-180 Manual Contents Page Installer Read Before Proceeding ...3 Homeowner Read Before Proceeding .
  • Page 2 ALTA Installation, Operating & Service Instructions The Massachusetts Board of Plumbers and Gas Fitters has listed the Alta Boiler. See the Massachusetts Board of Plumbers and Gas Fitters website for the latest Approval Code or ask your local Sales Representative.

  • Page 3: Installer Read Before Proceeding

    • Do not disconnect pipe fittings on boiler or heater manufacturer's instructions. in heating system without first verifying system 1. Alta boiler is a Direct Vent space heating is cool and free of pressure and that your boiler. clothing will protect you from a release of hot 2.

  • Page 4: Homeowner Read Before Proceeding

    AHRI Net Rating AFUE Number Capacity (MBH) (MBH) ALTA-120 13.6 ALTA-150 ALTA-180 Input for elevations up to 2,000 ft. (610 m) with min vent length. See Table 3-3 for derate at max vent length. Net AHRI Water Ratings shown are based on a piping and pickup allowance of 1.15. The manufacturer should be consulted before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent operation, extensive piping systems, etc.
  • Page 5 Approx. Derate at Model Number Intake/Vent Size in. (mm) ft. (m) ft. (m) Max. Length (%) Standard 2 (60) 2.5 (0.76) 70 (21.3) ALTA-120 w/ increaser 3 (80) 2.5 (0.76) 135 (41.1) Standard 2 (60) 2.5 (0.76) 70 (21.3) ALTA-150...

  • Page 6: How It Works

    ALTA Installation, Operating & Service Instructions How It Works 1. Heat exchanger 9. Control enclosure Water flows through heat exchanger's stainless Houses boiler control and provides access to steel tubes. Heat is transferred to water as flue installed fuses and spare fuses.
  • Page 7 Installation, Operating & Service Instructions ALTA How It Works (continued) Figure 4-1: How it works 110328-01 - 1/22...

  • Page 8: Locating Boiler

    ALTA Installation, Operating & Service Instructions Locating Boiler 4. Locate boiler to avoid water damage in case Code Requirements there is a leak. If boiler must be located in an area sensitive to water damage, install drain WARNING pan underneath boiler and pipe to a suitable Asphyxiation Hazard.
  • Page 9 Installation, Operating & Service Instructions ALTA Locating Boiler (continued) Ventilation Air 3. If 24" clearances described in (2) cannot be maintained, provide two openings into 1. Combustion air must be obtained directly room, one near floor and other near ceiling.
  • Page 10 ALTA Installation, Operating & Service Instructions Locating Boiler (continued) 4. If boiler is installed in room with other Table 5-2: Corrosive Combustion Air appliances, provide adequate air for combustion Contaminants and Sources and/or ventilation in accordance with other Contaminants to avoid: appliance manufacturer's instructions and applicable code.
  • Page 11 Installation, Operating & Service Instructions ALTA Locating Boiler (continued) Connecting New Boiler to Existing Vent 1. Seal any unused openings in the common venting System system. WARNING 2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no Asphyxiation Hazard.

  • Page 12: Preparing Boiler

    ALTA Installation, Operating & Service Instructions Preparing Boiler Unpack Boiler CAUTION Remove boiler and parts carton from outer shipping Heavy Object. carton. Boiler weighs up to 130 lb (59 kg). Two people are required to lift boiler onto wall mounting CAUTION bracket.
  • Page 13 Installation, Operating & Service Instructions ALTA Preparing Boiler (continued) Attach with Install Vent Connector (4) screws 1. Remove vent connector and screws from parts Vent Connector carton. 2. Check vent reducer on top of heat exchanger to ensure it is installed properly.
  • Page 14 ALTA Installation, Operating & Service Instructions Preparing Boiler (continued) 3. For wood studs, drill 3/16 in. (4.8 mm) pilot holes Mount Boiler "A" and "B" and attach bracket using provided 1. Wall bracket is designed to mount on studs 5/16 in. x 2 in. lag screws and washers. For wood with 16 in.

  • Page 15: General Venting

    Installation, Operating & Service Instructions ALTA General Venting Direct Vent Sidewall Termination Options Figure 7-2: Sidewall Low Figure 7-3: Sidewall Figure 7-1: Sidewall Profile Termination - see Concentric Termination - Termination with Fittings - Section 8 for details see Section 8 for details...
  • Page 16 Equivalent Derate at Size in. Number Length ft. Length ft. Max Length (mm) 2 (60) 2.5 (0.76) 70 (21.3) ALTA-120 3 (80) 2.5 (0.76) 135 (41.1) 2 (60) 2.5 (0.76) 70 (21.3) ALTA-150 ALTA-180 3 (80) 2.5 (0.76) 135 (41.1)
  • Page 17 Installation, Operating & Service Instructions ALTA General Venting (continued) 5. Example equivalent length calculation for 2 in. NOTICE: PVC may not be used to penetrate vent: combustible or non-combustible walls unless all A. 1 ft. CPVC straight pipe =1 eq ft.
  • Page 18 ALTA Installation, Operating & Service Instructions General Venting (continued) PVC coupling may be used to join CPVC To vent 6. CPVC/PVC vent starter kits are available. Kits to PVC vent pipe. termination include 30 in. (760 mm) CPVC pipe, 90° short From air At least 30in.
  • Page 19 Installation, Operating & Service Instructions ALTA General Venting (continued) Maximum Wall 2"* 6" 12" Thickness ("T") (50mm) (150mm) (305mm) Minimum air space 0"* 1" 1-3/4" around pipe ("C") (0mm) (25mm) (45mm) One end of opening may *Wall must be of non-combustible construction...
  • Page 20 ALTA Installation, Operating & Service Instructions General Venting (continued) Polypropylene Venting Table 7-16: Listed Polypropylene Vent Materials (ULC-S636 Listed) WARNING Manufacturer Model Asphyxiation Hazard. Polypropylene Single Wall Rigid • Use only vent materials listed in Table 7-16 DuraVent to make vent connections. Consult vent...
  • Page 21 Installation, Operating & Service Instructions ALTA General Venting (continued) Table 7-17: Listed Polypropylene Vent Fittings DuraVent Length Centrotherm InnoFlue Selkirk PolyFlue PolyPro 2 in. (60 mm) 2PPS-LC IANS02 PF-LB Joint Connector 3 in. (80 mm) 3PPS-LC IANS03 PF-LB or 4PF-LB 2 in.

  • Page 22: Sidewall Direct Venting

    ALTA Installation, Operating & Service Instructions Sidewall Direct Venting Determine Terminal Location C. Minimum 12 in. (305 mm) from inside corner. 6 ft (1.8 m) is generally recommended and WARNING required when window and/or air inlet is within Asphyxiation Hazard.
  • Page 23 Installation, Operating & Service Instructions ALTA Sidewall Direct Venting (continued) 110328-01 - 1/22...
  • Page 24 ALTA Installation, Operating & Service Instructions Sidewall Direct Venting (continued) Table 8-3: Polypropylene Sidewall Terminal Fittings CPVC/PVC or Polypropylene Fittings DuraVent Centrotherm Terminal Selkirk PolyFlue PolyPro InnoFlue WARNING UV resistant UV stabilized UV resistant Asphyxiation Hazard. single wall pipe end pipe + two pipe + two 2PF- All CPVC/PVC vent joints must be glued.
  • Page 25 Installation, Operating & Service Instructions ALTA Sidewall Direct Venting (continued) Table 8-7: CPVC/PVC Low Profile Terminal Kits DuraVent & Selkirk: Remove gasket to Length Ipex Diversitech install screen From boiler 2 in. (60 mm) 397984 HVENT-2 Elbow vent connection 3 in. (80 mm)
  • Page 26 ALTA Installation, Operating & Service Instructions Sidewall Direct Venting (continued) CPVC/PVC Concentric Terminal 3. Follow terminal manufacturer's instructions and Figure 8-11 for assembly. WARNING 4. If needed, terminal can be shortened. Follow Asphyxiation Hazard. terminal manufacturer's instructions and Figure All CPVC/PVC vent joints must be glued. Failure 8-12.
  • Page 27 Installation, Operating & Service Instructions ALTA Sidewall Direct Venting (continued) Kit Size *'A' Manufacturer 7-3/8" (187mm) 1-3/4" (44mm) *Overall length of inner IPEX 3-1/2" (89mm) 2" pipe to be 'A' longer than overall 12-3/16" (310mm) 3/4" (19mm) DIVERSITECH length of outer pipe.

  • Page 28: Vertical Direct Venting

    ALTA Installation, Operating & Service Instructions Vertical Direct Venting Determine Terminal Location WARNING WARNING Asphyxiation Hazard. Asphyxiation Hazard. All polypropylene vent systems rely on gaskets Follow these instructions when determining vent for sealing. Ensure gaskets are installed in terminal location. Failure to comply could result each female end of vent pipe or fitting.
  • Page 29 Installation, Operating & Service Instructions ALTA Vertical Direct Venting (continued) Table 9-2: Polypropylene Vertical Terminal Fittings DuraVent & Selkirk: Elbow Remove gasket to DuraVent Centrotherm install screen Joint Selkirk PolyFlue PolyPro InnoFlue Connector Screen UV resistant UV stabilized UV resistant...
  • Page 30 ALTA Installation, Operating & Service Instructions Vertical Direct Venting WARNING (continued) Asphyxiation Hazard. CPVC/PVC Concentric Terminal If using stainless steel screw to attach rain cap, always drill clearance hole in rain cap WARNING and pilot hole in vent pipe appropriate for Asphyxiation Hazard.
  • Page 31 Installation, Operating & Service Instructions ALTA Vertical Direct Venting (continued) Abandoned B-vent Chase Polypropylene Concentric Terminal WARNING Asphyxiation Hazard. WARNING • Only abandoned (unused) B-vent may Asphyxiation Hazard. be used as a chase. Failure to comply All polypropylene vent systems rely on gaskets may cause product damage or improper for sealing.
  • Page 32 ALTA Installation, Operating & Service Instructions Centrotherm Innoflue Vertical Direct Venting (continued) IFBK02 or IFBK03 (3.1m) B-Vent Kit Table 9-11: Polypropylene B-vent Chase B-Vent 24" (610mm) Components Flashing 12" (305mm) DuraVent Centrotherm Normal snow Selkirk PolyFlue line on roof PolyPro...
  • Page 33 Installation, Operating & Service Instructions ALTA Vent Vertical Direct Venting (continued) Note: Duravent Polypro Flex Abandoned Chimney Chase components shown. WARNING Asphyxiation Hazard. PPs Flex Only abandoned (unused) masonry chimney may be used as a chase. If chimney contains Clean, tight unused chimney multiple flues, all flues must be abandoned.

  • Page 34: Heating System Piping

    FPT inch, FPT Flow Loss, Flow Loss, Loss, Flow Loss, Flow (GPM) (GPM) (Ft.) (GPM) (Ft.) (Ft.) (GPM) (Ft.) ALTA 120 11.2 14.6 20.0 11.2 29.7 ALTA 150 10.9 11.3 15.3 14.1 23.4 ALTA 180 11.6 11.3 15.5 13.5 21.8...
  • Page 35 Installation, Operating & Service Instructions ALTA Heating System Piping (continued) Pressure Drop vs. Flow 150/180 Flow Rate (GPM) Figure 10-2: System Curve w/ 50 equivalent ft. of piping 4. Fill valve (required) 3. Expansion tank (required) A. Either a manual or automatic fill valve may A.
  • Page 36 ALTA Installation, Operating & Service Instructions Heating System Piping (continued) 5. Automatic air vent (required) C. Section HG614(c) of ASME Boiler and Pressure Vessel Code recognizes use of a Manual air vents are required to remove air during listed flow switch in lieu of LWCO on water initial fill.
  • Page 37 Installation, Operating & Service Instructions ALTA Heating System Piping (continued) 110328-01 - 1/22...
  • Page 38 ALTA Installation, Operating & Service Instructions Heating System Piping (continued) 110328-01 - 1/22...
  • Page 39 Installation, Operating & Service Instructions ALTA Heating System Piping (continued) 110328-01 - 1/22...
  • Page 40 ALTA Installation, Operating & Service Instructions Heating System Piping (continued) Boiler Supply Connection (1" NPT) Boiler Return Connection (1" NPT) Safety Relief Valve* (3/4" NPT) Gauge* (1/4" NPT) Boiler Pump* 18" (Req'd Clearance) * Supplied with boiler Figure 10-6: Webstone Primary-Secondary Manifold Kit Recommended Installation Table 10-7: Recommended Piping Configuration Item No.

  • Page 41: Gas Piping

    Installation, Operating & Service Instructions ALTA Gas Piping WARNING DANGER Explosion Hazard. Explosion Hazard. • Failure to properly pipe gas supply to boiler Do not use matches, candles, open flames or could cause improper operation or leaks of other ignition sources to check for leaks. Failure...

  • Page 42: Field Wiring

    ALTA Installation, Operating & Service Instructions Field Wiring Locating Field Connection Terminal Strips REVISIONS DANGER Field connection terminal strip locations are shown in REV. DATE DESCRIPTION Electrical Shock Hazard. • Disconnect electrical supply before Figure 12-1. To access terminal strips:...
  • Page 43 Installation, Operating & Service Instructions ALTA Field Wiring (continued) REVISIONS D. Maximum combined current draw for all REV. DATE DESCRIPTION circulators is 5A. 103-143-14599 1/6/2022 PRODUCTION RELEASE Low Voltage Connections APVD 1. All low voltage field connections to boiler are...
  • Page 44 ALTA Installation, Operating & Service Instructions Field Wiring (continued) i. Refer to Section 10 Heating System Piping 2. External power must not be applied to any low for LWCO kits available from manufacturer. voltage terminals - doing so may damage boiler control.

  • Page 45: Condensate Disposal

    Installation, Operating & Service Instructions ALTA Condensate Disposal C. If point of condensate disposal is above trap, WARNING it will be necessary to use a condensate Asphyxiation Hazard. pump to move condensate from boiler to Failure to install condensate drain in drain.

  • Page 46: Start-Up And Checkout

    ALTA Installation, Operating & Service Instructions Start-Up and Checkout Heating System Cleaning and Treatment Fill Water Quality NOTICE: Make sure system is filled with water meeting CAUTION the following criteria: Component Damage. Proper flushing, cleaning, and water side • Hardness less than 7 grains/gallon.
  • Page 47 Installation, Operating & Service Instructions ALTA Start-Up and Checkout (continued) A. Use 1/4 in. (6 mm) ID tubing connected to Final Check Before Starting Boiler hose barb and route tubing to a safe draining location. WARNING B. Turn vent counter clockwise and allow heat Asphyxiation Hazard.
  • Page 48 ALTA Installation, Operating & Service Instructions Start-Up and Checkout (continued) LP Conversion C. Apply yellow LP gas conversion label, supplied with boiler literature packet, to jacket WARNING beside rating label. Asphyxiation Hazard. • Do not attempt to operate this boiler on LP 7.
  • Page 49 Installation, Operating & Service Instructions ALTA Start-Up and Checkout (continued) 12. If there is a problem, display will show error code 16. Perform combustion test. (Figure 14-5). Refer to label on access door and WARNING Section 18 Troubleshooting to diagnose error.
  • Page 50 ALTA Installation, Operating & Service Instructions 10.00 Start-Up and Checkout (continued) FOR YOUR SAFETY READ BEFORE OPERATING/POUR VOTRE × × × × SECURITE LISEZ AVANT DE METTRE EN MARCHE WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 51 Installation, Operating & Service Instructions ALTA Start-Up and Checkout (continued) Boiler Sequence of Operation Table 14-9: Boiler Sequence of Operation Status Screen Display Description Burner - Off Pump(s) - Off Priority: Standby There is no call for heat, boiler is not firing and priority is "standby". Boiler is ready to Status: respond to a call for heat.

  • Page 52: Operation

    ALTA Installation, Operating & Service Instructions Operation User Display Overview reset – Figure 15-1: Display Icons Table 15-2: Display descriptions When not flashing or alternating display temperature is 180°F boiler supply temperature. Visible when Central Heat demand is present. Visible when DHW demand is present. Icon will flash if DHW setpoint is being adjusted.
  • Page 53 Installation, Operating & Service Instructions ALTA Operation (continued) Operating Mode The STA (status) display code contains below listed Basic boiler status is displayed and DHW setpoint values. may be adjusted. Table 15-5 Managing of Status Numbers Description (see Section 18...
  • Page 54 ALTA Installation, Operating & Service Instructions Operation (continued) Adjust Mode Menu Diagnostic information and Quick Menu parameters are available without entering a password. Press and Hold “menu” button for 3 seconds to access Adjust Mode. reset Press Press buttons buttons...
  • Page 55 Installation, Operating & Service Instructions ALTA Operation (continued) Accessing Password Protected Menus Password protected parameters are available by entering a password. Press and hold the "menu" for 3 seconds, reset Press "" or "" buttons until PAS is visible and press "enter".
  • Page 56 ALTA Installation, Operating & Service Instructions Operation (continued) Table 15-11: Menu A A , Quick Menu (items A06, A07, A08 and A09 visible only after password entered) Range/ Default Parameter and Description Choices A01 Boiler On/Off Switch On/Off Boiler switch allows an installer to prevent boiler starts while boiler powered and reviewing boiler settings.
  • Page 57 Installation, Operating & Service Instructions ALTA Operation (continued) Table 15-12: Menu FR FR, Firing Rate (visible only after password entered) Default Range/ Choices Parameter and Description F01 Manual Modulation Enable Setting to "On" allows technician to fire at rate specified in F02. To return to Auto change setting to "Off".
  • Page 58 ALTA Installation, Operating & Service Instructions Operation (continued) Table 15-13: Menu 5P 5P, , Setpoint Menu (visible only after password entered) Range/ Default Parameter and Description Choices 501 Temperature Units Sets display temperature in degrees Fahrenheit or Celsius. 0, 1...
  • Page 59 Installation, Operating & Service Instructions ALTA Operation (continued) Table 15-15: Menu PU PU, Pump Menu (visible only after password entered) Range/ Default Parameter and Description Choices P01 System Pump Output Select: Activates System Pump output according to selected function. System Pump Any Pump Runs during any call for heat.
  • Page 60 ALTA Installation, Operating & Service Instructions Operation (continued) Table 15-16: Menu LL LL, Lead Lag Menu (visible only after password entered) Range/ Default Parameter and Description Choices L01 Lead Lag Master Enable [Not for combi boilers] Used to "turn on" Multiple Boiler Controller On/Off Sequencer Master is Enabled.
  • Page 61 Installation, Operating & Service Instructions ALTA Operation (continued) NOTICE: This section covers control features available via local display. For additional control features available via our App, see Extended Features manual available on our website or in our App. Control System Overview 6.
  • Page 62 ALTA Installation, Operating & Service Instructions Operation (continued) Table 15-18: Order of Priority 2. High Differential Temperature Limit Control monitors temperature difference between Boiler Responding to: return and supply sensors. If this difference Domestic Hot Water exceeds 58°F (32°C) control begins to reduce...
  • Page 63 Installation, Operating & Service Instructions ALTA Operation (continued) Boiler Protection Features (continued) 11. Central Heating System Frost Protection 7. Flue High Limit Frost Protection starts boiler and system pump Control monitors flue gas temperature sensor and fires boiler when low outdoor air, low supply located at top of heat exchanger.

  • Page 64: Before Leaving Jobsite

    ALTA Installation, Operating & Service Instructions Before Leaving Jobsite Before leaving jobsite Installed wall retaining clips (bottom)  Flushed heating system  Boiler and system filled with water  Air purged from boiler system  No loose, uninsulated or miswired connections ...

  • Page 65: Service And Maintenance

    Installation, Operating & Service Instructions ALTA Service and Maintenance Important Product Safety Information: Refractory Ceramic Fiber Product WARNING Some boiler components use materials that contain refractory ceramic fibers (RCF). RCF has been classified as a possible human carcinogen. When exposed to elevated temperatures, RCF may change into crystalline silica, a known carcinogen.
  • Page 66 ALTA Installation, Operating & Service Instructions Monthly Inspections: Service and Maintenance (continued) 1. Inspect vent piping and air intake piping to verify it is free from leakage and deterioration. Also verify vent and air intake terminals are WARNING unobstructed. Asphyxiation Hazard. Fire Hazard. Explosion Hazard.
  • Page 67 Installation, Operating & Service Instructions ALTA D. Verify gap between ignitor/flame sensor and Service and Maintenance (continued) burner is within range shown in Figure 17-3 and Table 17-4. 8. Inspect blower gas valve assembly. Ignitor/Flame Sensor Burner Door Mounting Nuts (4X) Gap "A"...
  • Page 68 ALTA Installation, Operating & Service Instructions Service and Maintenance E. Refer to Sections 7 thru 9 to re-assemble (continued) any vent system components that are disassembled during this inspection and for details on supporting, pitching and terminating vent system. Condensate Tube from heat exchanger 12.

  • Page 69: Troubleshooting

    Installation, Operating & Service Instructions ALTA Troubleshooting WARNING Electrical Shock Hazard. Turn off power to boiler before working on wiring. A. Troubleshooting with No Active Fault Code Displayed Table 18-1: Troubleshooting with No Active Fault Code Indication Possible Causes Corrective Action...
  • Page 70 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) In the event of high CO (exceeding 200 ppm air free.) follow below steps in specified order: 1. Confirm fuel settings (see Section 14 Start-up and Checkout) A. Gas valve setting (1) for Natural Gas, (2) for LP B.
  • Page 71 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) B. Troubleshooting with Status Numbers In Operating Mode, use arrow keys ("" or "") to reach "StA". Display will then alternate between "StA" and number shown below. Table 18-2: Status Number Explanation...
  • Page 72 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) C. Troubleshooting with Diagnostic Codes In Diagnostic and Quick Menu Mode, use the arrow keys ("" or "") to reach "c" menu and press "enter" button to view diagnostic codes. Table 18-3: Diagnostic Menu...
  • Page 73 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) D. Troubleshooting with Active Fault Code. Control uses following codes to describe abnormal operation: Table 18-4: Lockout/Hold/Warning Symbol Description Code Type Boiler Status Description When a lockout occurs, boiler will shut down and event is stored in history, b, menu.
  • Page 74 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action Verify the system is full of water and the air has been properly purged.
  • Page 75 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action Inspect heat exchanger and clean flue side of heat Heat exchanger dirty.
  • Page 76 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action • Remove jumper from air proving switch.
  • Page 77 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action [18.0] Application Normal condition following a parameter download, set Factory parameters are not valid.
  • Page 78 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action No gas, insufficient gas supply Verify no air in gas line.
  • Page 79 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 18-5: Active Fault Code and Corrective Actions (continued) Detailed Fault Code found on "b" and "c" menus in brackets, e.g. [1.0]. Code Name Possible Cause Corrective Action Hardware Fault Control damaged.
  • Page 80 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 18-6: Detailed Fault Code (found on"c" and "b" menus) Detailed Code Type Condition Code Anti-short cycle boiler start delay, while thermostat demand present, boiler has H01.0 Warning cycled off and restart is delayed.
  • Page 81 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 18-6: Detailed Fault Code (found on"c c " and "b b " menus, continued) Detailed Code Type Condition Code H17.0 Hold Control in program mode. H17.1 Hold Internal Safety Core error.
  • Page 82 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 18-6: Detailed Fault Code (found on"c c " and "b b " menus, continued) Detailed Code Type Condition Code H24.0 Warning Flame signal loss in operation. H24.1 Hold Flame signal loss in stabilization phase.
  • Page 83 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 18-7: Supply, Return, Header and Flue Table 18-8: Outdoor Air Temperature Sensor Temperature Sensor Temperature versus Temperature versus Resistance (10 kOhm) Resistance (10 kOhm) Outdoor Temperature Ohms of Temperature Ohms of Resistance °F...

  • Page 84: Internal Wiring Diagrams

    ALTA Installation, Operating & Service Instructions Internal Wiring Diagrams 110328-01 - 1/22...
  • Page 85 Installation, Operating & Service Instructions ALTA Internal Wiring Diagrams (continued) 110328-01 - 1/22...
  • Page 86 ALTA Installation, Operating & Service Instructions Internal Wiring Diagrams (continued) Figure 19-2: Ladder Diagram 110328-01 - 1/22...

  • Page 87: Service Parts

    Installation, Operating & Service Instructions ALTA Service Parts All service parts may be obtained through your local U.S. Boiler Company Wholesale distributor. Should you require assistance in locating a U.S. Boiler Company Distributor in your area, or have questions regarding the availability of U.S.
  • Page 88 ALTA Installation, Operating & Service Instructions Service Parts (continued) (120 MBH) (80 & 150/180 MBH) Part Number Key No. Description MATERIAL: DES: EJL SCALE: 1:5 THIRD ANGLE UNLESS OTHERWISE NOTED: 10A, 10B Water Pipe Gaskets 110577-01 PROJECTION ALL DIMENSIONS IN INCHES.
  • Page 89 Installation, Operating & Service Instructions ALTA Service Parts (continued) UNLESS OTHERWISE NOT ALL DIMENSIONS IN INC TOLERANCES: X.X ±.1 X.XXX ±.005 X.XX ±.03 ANGLE ±1 PROPER U.S. Boiler Co LANCAS THIS DOCUMENT CONTAINS C Part Number AND ITS CONTENTS ARE THE S COMPANY, INC.
  • Page 90 ALTA Installation, Operating & Service Instructions Service Parts (continued) Part Number Key No. Description 31A, 31B, 31C, 31D, 31E, Condensate Trap 110589-01 31F, 31G, 31H Front Door 110595-01 Vent connector 107160-01 Side panel 110725-01 111565-01 45, 46 Wall brackets 110882-01...
  • Page 91 Installation, Operating & Service Instructions ALTA Service Parts (continued) 5A fuse 1A fuse .5A fuse NOTICE: When replacing control, use boiler control service part. Boiler control service part is compatible for all models. Factory installed control is only compatible with purchased boiler.
  • Page 92 ALTA Installation, Operating & Service Instructions Service Parts (continued) Part Number Key No. Description Ignition Harness 110598-01 Main Control Harness 111566-01 Power Harness Part Number Accessories Description 2" CPVC/PVC Vent Kit 107039-01 3" CPV/PVC Vent Kit 107039-02 Condensate Neutralizer Kit...

  • Page 93: Combination Refrigeration/Heating System

    Installation, Operating & Service Instructions ALTA Appendix A Combination Refrigeration/Heating System REVISIONS 1. If boiler is used in connection with refrigeration 2. If boiler is connected to heating coils located in REV. DATE DESCRIPTION APVD systems, boiler must be installed with chilled...

  • Page 94: Water Quality And Boiler Additives

    ALTA Installation, Operating & Service Instructions Appendix B Water Quality and Boiler Additives Other non-metallic tubing is equipped with an The heat exchanger used in this boiler is made oxygen barrier to prevent migration of oxygen from stainless steel coils having relatively narrow into water.

  • Page 95: Special Requirements In Massachusetts

    Installation, Operating & Service Instructions ALTA Appendix C Special Requirements For Side-Wall Vented Appliances In The Commonwealth of Massachusetts IMPORTANT The Commonwealth of Massachusetts requires compliance with regulation 248 CMR 4.00 and 5.00 for installation of side-wall vented gas appliances as follows:...
  • Page 96 ALTA Installation, Operating & Service Instructions Appendix C Special Requirements For Side-Wall Vented Appliances In The Commonwealth of Massachusetts (continued) (c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:1.

  • Page 97: Code Required Text

    Installation, Operating & Service Instructions ALTA Appendix D Code Required Text See Section 5 Locating Boiler: Remove Existing Boiler 6. Une fois qu'il a été déterminé, selon la méthode indiquée ci-dessus, que chaque for context of following text: appareil raccordé au système d'évacuation Les instructions doivent comprendre le mode est mis à...
  • Page 98 ALTA Installation, Operating & Service Instructions SERVICE RECORD DATE SERVICE PERFORMED 110328-01 - 1/22...
  • Page 99 Installation, Operating & Service Instructions ALTA SERVICE RECORD DATE SERVICE PERFORMED 110328-01 - 1/22...
  • Page 100 ALTA Installation, Operating & Service Instructions U.S. Boiler Company, Inc. P.O. Box 3020 Lancaster, PA 17604 1-888-432-8887 www.usboiler.net 110328-01 - 1/22...

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