U.S. Boiler Company ALTA ALTAC-136 Installation, Operating And Service Instructions

U.S. Boiler Company ALTA ALTAC-136 Installation, Operating And Service Instructions

Combi boiler / water heater
Table of Contents

Advertisement

Installation, Operating and Service Instructions for
ALTA
Model: ALTAC-136

Manual Contents

1.
Installer Read Before Proceeding . . . . . . . . . . .3
2.
3.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4.
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5.
Locating Boiler . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.
Preparing Boiler . . . . . . . . . . . . . . . . . . . . . . . .13
7.
General Venting . . . . . . . . . . . . . . . . . . . . . . . . .16
8.
Sidewall Direct Venting . . . . . . . . . . . . . . . . . . .23
9. Vertical Direct Venting . . . . . . . . . . . . . . . . . . .29
10. Heating System Piping . . . . . . . . . . . . . . . . . . .35
11. Domestic Water Piping . . . . . . . . . . . . . . . . . . .38
12. Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
13. Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
14. Condensate Disposal . . . . . . . . . . . . . . . . . . . .45
15. Start-up and Checkout . . . . . . . . . . . . . . . . . .46
16. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
17. Before Leaving Jobsite . . . . . . . . . . . . . . . . . .64
18. Service and Maintenance . . . . . . . . . . . . . . . . .65
19. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . .69
20. Internal Wiring Diagrams . . . . . . . . . . . . . . . . .83
21. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Appendix
A. Combination Refrigeration/Heating System . .92
B. Water Quality and Boiler Additives . . . . . . . . .93
C. Special Requirements In Massachusetts . . . .94
D. Code Required Text . . . . . . . . . . . . . . . . . . . . . .96
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.
This boiler must only be installed, serviced, or repaired by a qualified heating installer or service technician.
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.
110327-02 - 7/20
• Combi Boiler/Water Heater
• Condensing
• Direct Vent
• Gas Fired
Page
!
WARNING

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ALTA ALTAC-136 and is the answer not in the manual?

Questions and answers

Marc Cluckey
May 6, 2025

i have alta 136 combi ho4 code comes up with 52 degree incoming temp why is the code coming up unit is been hooked up for 2 weeks

Subscribe to Our Youtube Channel

Summary of Contents for U.S. Boiler Company ALTA ALTAC-136

  • Page 1 Installation, Operating and Service Instructions for ALTA • Combi Boiler/Water Heater • Condensing • Direct Vent • Gas Fired Model: ALTAC-136 Manual Contents Page Installer Read Before Proceeding ...3 Homeowner Read Before Proceeding ..4 Specifications .
  • Page 2 Installation, Operating & Service Instructions ALTA 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. The Commonwealth of Massachusetts requires this product to be installed by a licensed Plumber or Gas fitter.
  • Page 3 ALTA Installation, Operating & Service Instructions Installer or Qualified Service Agency Read Before Proceeding NOTICE: Size boiler properly relative to design WARNING heat load or, if using DHW priority, the peak Asphyxiation Hazard, Burn Hazard, Electrical hot water load, whichever is larger. A grossly Shock Hazard.
  • Page 4 Installation, Operating & Service Instructions ALTA User/Homeowner Read Before Proceeding DANGER WARNING Asphyxiation Hazard. Fire Hazard. • A skilled and experienced service technician should annually inspect boiler including an annual inspection of all vent gaskets and replace any exhibiting damage or deterioration. •...
  • Page 5 ALTA Installation, Operating & Service Instructions Specifications Table 3-1: Ratings Domestic Hot Water (DHW) Ratings Space Heating Ratings Input (MBH) Input (MBH) Hot Water Draw Limits GPM (L/min) AHRI Heating AFUE 70°F 77° 90°F Capacity Rating (39°C) (43°C) (50°C) (MBH) (MBH) Rise Rise...
  • Page 6 Installation, Operating & Service Instructions ALTA Specifications (continued) Vent Safety Air Intake Relief Valve Front View 120 VAC Low Voltage Knockouts Knockouts Domestic Cold Water Boiler Inlet Supply Boiler Return Domestic Condensate Trap Hot Water Cleanout Outlet Condensate Drain Bottom View Figure 3-6: Boiler Connections 110327-02 - 7/20...
  • Page 7 ALTA Installation, Operating & Service Instructions How It Works 1. Heat exchanger 12. Boiler supply temperature sensor (limit rated) Water flows through heat exchanger's corrosion Dual element temperature sensor used to monitor resistant stainless steel tubes. Heat is transferred boiler water exiting heat exchanger. Boiler control to water as flue products are cooled below point uses supply temperature to initiate CH burner of condensation, for maximum heat transfer and...
  • Page 8 Installation, Operating & Service Instructions ALTA How It Works (continued) Figure 4-1: How it works 110327-02 - 7/20...
  • Page 9 ALTA Installation, Operating & Service Instructions Locating Boiler 4. Locate boiler to avoid water damage in case there is a leak. If boiler must be located in an Code Requirements area sensitive to water damage, install drain WARNING pan underneath boiler and pipe to a suitable drain location.
  • Page 10 Installation, Operating & Service Instructions ALTA Locating Boiler (continued) Ventilation Air 3. If recommended service clearances cannot be maintained, provide two openings into 1. Combustion air must be obtained directly room, one near floor and other near ceiling. from outdoors, however ventilation openings Top of upper opening to be within 12 in.
  • Page 11 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 12 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 13 ALTA Installation, Operating & Service Instructions Preparing Boiler Unpack Boiler CAUTION Remove boiler and miscellaneous parts carton from Heavy Object. outer shipping carton. Boiler weighs up to 130 lb (59 kg). Two people are required to lift boiler onto wall mounting CAUTION bracket.
  • Page 14 Installation, Operating & Service Instructions ALTA Preparing Boiler (continued) Install Vent Connector Preparing for Fuel Conversion If using LP gas. LP conversion requires (2) 1. Remove vent connector and screws from steps: gas valve setting adjustment and control miscellaneous parts carton. parameter change.
  • Page 15 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 16 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 see Section 8 for details Direct Vent Vertical Termination Options Figure 7-4: Vertical...
  • Page 17 ALTA Installation, Operating & Service Instructions General Venting (continued) Vent and Air Sizing 1. Min and max lengths are calculated separately for air and vent. For example, max length 135 ft. (41.1 WARNING m) means up to 135 ft. (41.1 m) air piping and up Asphyxiation Hazard.
  • Page 18 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 of the following conditions are met. If any of these A.
  • Page 19 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 20 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 be closed PVC Vent Pipe 66"...
  • Page 21 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 PolyPro Flex manufacturer's instructions for required support InnoFlue Single Wall Rigid...
  • Page 22 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 23 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. 4 ft.
  • Page 24 Installation, Operating & Service Instructions ALTA Sidewall Direct Venting (continued) 110327-02 - 7/20...
  • Page 25 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 26 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) 196984 HVENT-2 Elbow vent connection 3 in. (80 mm) 196985 HVENT-3 To boiler...
  • Page 27 Installation, Operating & Service Instructions ALTA 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 28 Installation, Operating & Service Instructions ALTA Sidewall Direct Venting (continued) Table 8-13: Polypropylene Concentric Sidewall Polypropylene Concentric Terminal Terminal Components WARNING DuraVent Centrotherm Selkirk Length Asphyxiation Hazard. PolyPro InnoFlue PolyFlue All polypropylene vent systems rely on gaskets ICWT242 for sealing. Ensure gaskets are installed in 2PF-HCT terminal + each female end of vent pipe or fitting.
  • Page 29 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 30 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 single wall pipe end pipe + pipe + 2PF-...
  • Page 31 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 32 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 33 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 InnoFlue 2PF-10UV or PPs Flex...
  • Page 34 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 35 ALTA Installation, Operating & Service Instructions Heating System Piping If replaced, replacement must have a setting General System Piping Precautions less than or equal to maximum allowable WARNING working pressure (MAWP) shown on ASME data plate located on left side of heat Asphyxiation Hazard.
  • Page 36 Installation, Operating & Service Instructions ALTA Heating System Piping (continued) 5. Automatic air vent (required) C. Section HG614(c) of 2015 ASME Boiler and Pressure Vessel Code recognizes use of a A. Factory installed air vent is included on boiler listed flow switch in lieu of LWCO on water heat exchanger, to vent heat exchanger.
  • Page 37 ALTA Installation, Operating & Service Instructions Heating System Piping (continued) 110327-02 - 7/20...
  • Page 38 Installation, Operating & Service Instructions ALTA Domestic Water Piping DHW components in this system and their functions are as follows: DANGER 1. ASSE 1070 or ASSE 1017 listed tempering valve (required) Scald Hazard. Low draw rates and transitions from • Under certain conditions this boiler heating to DHW are two examples of can deliver domestic hot water (DHW) at conditions that can cause temperature of...
  • Page 39 ALTA Installation, Operating & Service Instructions Domestic Water Piping (continued) 110327-02 - 7/20...
  • Page 40 Installation, Operating & Service Instructions ALTA Domestic Water Piping (continued) 110327-02 - 7/20...
  • Page 41 Installation, Operating & Service Instructions ALTA Gas Piping 3. Boiler and its gas connection must be leak WARNING tested before placing boiler in operation. Explosion Hazard. A. For pressure testing at equal to or less than • Failure to properly pipe gas supply to boiler 1/2 psig (3.4 kPa) close manual shut-off valve.
  • Page 42 Installation, Operating & Service Instructions ALTA Field Wiring Locating Field Connection Terminal Strips DANGER Field connection terminal strip locations are shown in Electrical Shock Hazard. • Disconnect electrical supply before Figure 13-1. To access terminal strips: installing or performing maintenance. 1.
  • Page 43 ALTA Installation, Operating & Service Instructions Field Wiring (continued) Low Voltage Connections 1. All low voltage field connections to boiler are made on Low Voltage Connections terminal strip (see Figure 13-3) located on left side of bottom panel. Route all low voltage wiring through conduit knock out holes located on left side in 120V Boiler...
  • Page 44 Installation, Operating & Service Instructions ALTA Field Wiring (continued) 2. External power must not be applied to any of low LWCO wiring - Although not necessary to voltage terminals - doing so may damage boiler protect this boiler, some jurisdictions may control.
  • Page 45 ALTA Installation, Operating & Service Instructions 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 Installation, Operating & Service Instructions ALTA Start-Up and Checkout Heating System Cleaning and Treatment 4. Verify air pressure in expansion tank is equal to system pressure. 1. Prior to fill, flush entire heating system to remove sediment, flux, and traces of boiler additives. WARNING 2.
  • Page 47 ALTA Installation, Operating & Service Instructions Start-Up and Checkout WARNING (continued) Asphyxiation Hazard. • Do not attempt to operate this boiler on LP Final Check Before Starting Boiler gas without making proper adjustments to gas valve and control. Do not convert this boiler to WARNING LP gas without using of a combustion analyzer Asphyxiation Hazard.
  • Page 48 Installation, Operating & Service Instructions ALTA Start-Up and Checkout (continued) 10. If boiler does not light after 2 tries for ignition, it 7. Start boiler using lighting instructions in Figure will enter a "soft lockout" and will wait for one hour 15-9.
  • Page 49 ALTA Installation, Operating & Service Instructions Start-Up and Checkout (continued) 15. Check inlet gas pressure(Figure 15-8). 16. Perform combustion test. Verify inlet gas pressure is between upper and WARNING lower limits shown on rating label with all gas Asphyxiation Hazard. appliances on and off.
  • Page 50 Installation, Operating & Service Instructions ALTA 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 ALTA Installation, Operating & Service Instructions Start-Up and Checkout (continued) Boiler Sequence of Operation Table 15-10: Boiler Sequence of Operation Status Screen Display Description Burner - Off Pump(s) - Off Three Way Valve - DHW 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 Installation, Operating & Service Instructions ALTA Operation User Display Overview reset – Figure 16-1: Display Icons Table 16-2: Display descriptions When not flashing or alternating display temperature is: 120°F • DHW outlet temperature during DHW priority. • Boiler supply temperature at all other times. Visible when CH demand is present.
  • Page 53 ALTA Installation, Operating & Service Instructions Operation (continued) Operating Mode The STA (status) display code contains below listed values. Basic boiler status is displayed and DHW setpoint may be adjusted. Table 16-5 Managing of Status Numbers Description (see Section 19 reset Display Troubleshooting for explanation)
  • Page 54 Installation, Operating & Service Instructions ALTA 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 buttons to Press buttons to view next menu or adjust parameters.
  • Page 55 ALTA Installation, Operating & Service Instructions 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". Press "enter"...
  • Page 56 Installation, Operating & Service Instructions ALTA Operation (continued) Table 16-11: 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 ALTA Installation, Operating & Service Instructions Operation (continued) Table 16-12: Menu FR FR, Firing Rate (visible only after password entered) Range/ Default Parameter and Description Choices F01 Manual Modulation Enable Setting to "On" allows technician to fire at rate specified in F02. On/Off Manual Auto...
  • Page 58 Installation, Operating & Service Instructions ALTA Operation (continued) Table 16-13: 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 Fahrenheit Celsius 502 DHW Priority Time...
  • Page 59 ALTA Installation, Operating & Service Instructions Operation (continued) Table 16-15: 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 Installation, Operating & Service Instructions ALTA Operation (continued) Table 16-16: Menu LL LL, Lead Lag Menu (visible only after password entered) Range/ Default Parameter and Description Choices L01 Lead Lag Master Enable [HEATING BOILER ONLY] Used to "turn on" Multiple Boiler Controller On/Off Sequencer Master is Enabled.
  • Page 61 ALTA Installation, Operating & Service Instructions Operation (continued) 6. Sensorless Reset Control System Overview Control system monitors recent firing rate and The Alta control manages all of the following boiler burner cycle data to infer current building heat functions: loss. Target supply water temperature is then adjusted to match this heat load.
  • Page 62 Installation, Operating & Service Instructions ALTA Operation (continued) 12. Priority Demand 2. High Differential Temperature Limit Control accepts a call for heat from multiple Control monitors temperature difference between places and responds to its "Priority". When more return and supply sensors. If this difference than one demand is present, higher priority exceeds 58°F (32°C) control begins to reduce demand is used to determine active boiler...
  • Page 63 ALTA Installation, Operating & Service Instructions Operation (continued) Boiler Protection Features (continued) Table 16-19: Frost Protection Interlocks 7. Flue High Limit Device Start Temperatures Stop Temperatures Control monitors flue gas temperature sensor Started located at top of heat exchanger. If flue Outdoor Air Outdoor Air temperature exceeds 194°F (90°C), control...
  • Page 64 Installation, Operating & Service Instructions ALTA Before Leaving Jobsite Before leaving jobsite Installed ASSE 1017 or 1070 tempering valve  Installed wall retaining clips (bottom)  Flushed heating system  Boiler and system filled with water  Air purged from boiler system ...
  • Page 65 ALTA Installation, Operating & Service Instructions Service and Maintenance Important Product Safety Information: Refractory Ceramic Fiber Product WARNING Some boiler components contain refractory ceramic fibers (RCF). RCF has been classified as a possible human carcinogen. When exposed to temperatures above 1805°F, such as during direct flame contact, RCF changes into crystalline silica, a known carcinogen.
  • Page 66 Installation, Operating & Service Instructions ALTA 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 ALTA Installation, Operating & Service Instructions Service and Maintenance (continued) D. Verify gap between ignitor/flame sensor and burner is within range shown in Figure 18-3. Ignitor/Flame Sensor Burner Door Mounting Nuts (4X) .32" (8mm) - .52" (13mm) .32" (8mm) - .52" (13mm) Gap Figure 18-1: Ignitor/flame sensor location Figure 18-3: Ignitor/flame sensor to burner gap 4.
  • Page 68 Installation, Operating & Service Instructions ALTA 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 ALTA Installation, Operating & Service Instructions Troubleshooting WARNING Electrical Shock Hazard. Turn off power to boiler before working on wiring. A. Troubleshooting with No Active Fault Code Displayed Table 19-1: Troubleshooting with No Active Fault Code Indication Possible Causes Corrective Action Display Completely Check breaker and wiring between breaker panel and No 120VAC supplied to boiler.
  • Page 70 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-1: Troubleshooting with No Active Fault Code (continued) Indication Possible Causes Corrective Action Low Water flow through plate heat Remove and inspect plate heat exchanger, flush exchanger. heat exchanger if required. Cycle power to boiler to initiate an air elimination Air in system piping.
  • Page 71 ALTA Installation, Operating & Service Instructions 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 19-2: Status Number Explanation Display Description Explanation...
  • Page 72 Installation, Operating & Service Instructions ALTA 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 19-3: Diagnostic Menu Display Name Description...
  • Page 73 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) D. Troubleshooting with Active Fault Code. Control uses following codes to describe abnormal operation: Table 19-4: 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 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-5: Active Fault Code and Corrective Actions (continued) Code Name Possible Causes Corrective Action Heating load at time of error below minimum firing rate of Test individual zones and ensure proper zone sizes. boiler Defective system pump or no flow Check pump operation, replace if necessary.
  • Page 75 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 19-5: Active Fault Code and Corrective Actions (continued) Code Name Possible Causes Corrective Action Check supply sensor wiring, correct wiring if necessary. Shorted or miswired Supply supply temperature Measure resistance of each thermistor and compare. Refer to Sensor Fault sensor.
  • Page 76 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-5: Active Fault Code and Corrective Actions (continued) Code Name Possible Causes Corrective Action [17.0] Control in program Control was left in laboratory mode, cycle power. mode. WARNING Asphyxiation Hazard. Boiler type is factory set and must match boiler model. Boiler type BCC determines minimum and maximum blower speeds.
  • Page 77 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 19-5: Active Fault Code and Corrective Actions (continued) Code Name Possible Causes Corrective Action [18.7] Factory defaults not Ensure BCC is installed and select A10 factory Default Invalid turned on. "On" see Table 16-11. Application Boiler pump set to 0 or boiler pump output set to 3 and Parameters...
  • Page 78 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-5: Active Fault Code and Corrective Actions (continued) Code Name Possible Causes Corrective Action Hardware Control damaged. Check control, try cycle power, replace if necessary. Fault Too long running without running at minimum capacity. Cycle power to initiate calibration.
  • Page 79 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 19-6: Detailed Fault Code (found on"c" and "b" menus) Detailed Code Type Condition Code H01.0 Warning Anti-short cycle delay. H01.1 Warning Urgent calibration cooling delay. Hold Flow switch closed delay. H01.2 Hold Boiler Safety Limit Open.
  • Page 80 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-6: 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. E17.2 Lockout Parameter CRC error.
  • Page 81 ALTA Installation, Operating & Service Instructions Troubleshooting (continued) Table 19-6: Detailed Fault Code (found on"c c " and "b b " menus, continued) Detailed Code Type Condition Code H25.0 Hold Safety core system error. H25.2 Hold Hardware Fault, Internal Application error. H25.3 Hold Hardware Fault, Internal Safety core error.
  • Page 82 Installation, Operating & Service Instructions ALTA Troubleshooting (continued) Table 19-7: Supply, DHW, Return Header and Table 19-8: Outdoor Air Temperature Sensor Flue Temperature Sensor Temperature versus Temperature versus Resistance Resistance Outdoor Temperature Ohms of Temperature Ohms of Resistance °F °C Resistance °F °C...
  • Page 83 ALTA Installation, Operating & Service Instructions Internal Wiring Diagrams Earth Ground 120VAC/60Hz/1Ph (Line Voltage) Combustion Blower P1-8 P1-2 Internal Chassis P1-9 Overcurrent Ground Protection Boiler Control Pump Outlet A X1-5 S4962VS1014 System Pump 1.5A [System or Zone 1 Pump] P1-7 X1-8 Fuse T5.0A (slow blow)
  • Page 84 Installation, Operating & Service Instructions ALTA Internal Wiring Diagrams (continued) Direction of flow 110327-02 - 7/20...
  • Page 85 ALTA Installation, Operating & Service Instructions Internal Wiring Diagrams (continued) 110327-02 - 7/20...
  • Page 86 Service Parts Key No. Description Part Number Heat Exchanger Fixing Clamp Bracket Contact U.S. Boiler Company; Holding Clamp Provide boiler serial number Pop Rivet 5/32 x 3/16 in. (.126-.187 Grip) 10-32 x 1/2 in. Thread Cutting Screw Flue Outlet Gasket 105882-01 Flue Adapter 3"...
  • Page 87 ALTA Installation, Operating & Service Instructions Service Parts (continued) Key No. Description Part Number 10A, 10B, 10C, 10D, 10E, 10F, 10G Water Pipe Gaskets 110577-01 11A, 11B, 11C, 11D Water Pipes (w/ gaskets) 110578-01 DHW/Return Temp Sensor 110579-01 Supply Temp. Sensor 106994-01 Pump 110580-01...
  • Page 88 Installation, Operating & Service Instructions ALTA Service Parts (continued) Key No. Description Part Number Blower, EBM NRG118 (115W) (with gaskets, 23A, 23B, 23C, 23D, 23E, 27, 28, 30 110586-01 o-rings, and hardware) 24A, 24B, 24C, 24D, 24E, 24F, 28,29 Gas Valve (with gaskets, o-rings, and hardware) 110587-01 25A, 25B Air Proving Switch (tubing- 5/16 in.
  • Page 89 ALTA Installation, Operating & Service Instructions Service Parts (continued) Key No. Description Part Number 31A, 31B, 31C, Condensate Trap 110589-01 31D, 31E, 31F, 31G Front Door 110595-01 Vent connector 107160-01 Side panel 110725-01 45, 46 Wall brackets 110882-01 Not shown Thumb screw 106033-01 110327-02 - 7/20...
  • Page 90 Key No. Description Part Number Control Enclosure 110590-01 Boiler Control 110591-01 Contact U.S. Boiler Company; Provide boiler serial number Model Key Low Voltage Connection Board 110594-01 Fuse, 5.0A, 5 x 20mm, 250V, Slow Blow Not Shown Fuse, 1.0A, 5 x 20mm, 250V, Slow Blow Obtain locally Fuse, 0.5A, 5 x 20mm, 250V, Slow Blow...
  • Page 91 ALTA Installation, Operating & Service Instructions Service Parts (continued) Key No. Description Part Number Ignition Harness 110598-01 Power Harness 110599-01 Main Control Harness Accessories Description Part Number 2" CPVC/PVC Vent Kit 107039-01 Condensate Neutralizer Kit 101867-01 Auto Reset LWCO 105591-01 Manual Reset LWCO 108182-01 Thermostatic Mixing Valve, 70-145F...
  • Page 92 Installation, Operating & Service Instructions ALTA Appendix A Combination Refrigeration/Heating System 1. If boiler is used in connection with refrigeration 2. If boiler is connected to heating coils located in systems, boiler must be installed with chilled air handling units where they may be exposed to medium piped in parallel with the heating boiler refrigerated air, boiler piping must be equipped using appropriate valves to prevent chilled...
  • Page 93 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 94 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: (a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) ft.
  • Page 95 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 96 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 97 ALTA Installation, Operating & Service Instructions SERVICE RECORD DATE SERVICE PERFORMED 110327-02 - 7/20...
  • Page 98 Installation, Operating & Service Instructions ALTA SERVICE RECORD DATE SERVICE PERFORMED 110327-02 - 7/20...
  • Page 99 ALTA Installation, Operating & Service Instructions SERVICE RECORD DATE SERVICE PERFORMED 110327-02 - 7/20...
  • Page 100 Installation, Operating & Service Instructions ALTA U.S. Boiler Company, Inc. P.O. Box 3020 Lancaster, PA 17604 1-888-432-8887 www.usboiler.net 110327-02 - 7/20...

Table of Contents

Save PDF