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Bosch C 950 Installation And Operation Instruction Manual

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Installation and Operation Instructions
INDOOR MODEL
C 950 / C 1050 ES (Pro TL 175C/199C)
C 950 / C 1050 ES (Pro TL 175C/199C) - Natural Gas
C 950 / C 1050 ES (Pro TL 175C/199C) - Liquefied Petroleum (LP) Gas
WARNING!
Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Refer to this manual. For assistance or additional infor-
mation consult a qualified installer, service agency or the gas supplier.
NOTICE
Upon completion of the installation, these instructions should be handed to the
user of the appliance for future reference.

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Summary of Contents for Bosch C 950

  • Page 1 C 950 / C 1050 ES (Pro TL 175C/199C) C 950 / C 1050 ES (Pro TL 175C/199C) - Natural Gas C 950 / C 1050 ES (Pro TL 175C/199C) - Liquefied Petroleum (LP) Gas WARNING! Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage.

  • Page 2: Table Of Contents

    6.4 Temperature selection ..... . 53 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 3: Key To Symbols And Safety Instructions

     a reference to a related part in the document (e.g. bathrooms, saunas). • a list entry – a list entry (second level) Table 1 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 4 ▶ Work on gas components may only be carried out by a trained and certified H DANGER: installer. If you smell flue gas, ▶ Switch off the appliance. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 5 ▶ Explain to the customer how the themselves. appliance works and how to operate ▶ Inform the customer that he/she must not carry out any alterations or repairs. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 6 ▶ Use metal fittings for potable water heating systems with plastic piping. ▶ Use only original accessories from the manufacturer. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 7 ▶ The heater must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures equal to or more than 0.5 psi. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 8: Fcc Rules

    1.5 to 2 minutes 130 °F (54 °C) approx. 30 seconds 135 °F (57 °C) approx. 10 seconds 140 °F (60 °C) less than 5 seconds C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 9: Appliance Details

    Reset button. • Program button (Selectable temperature default). • Failure codes for easy diagnostics and repair. • Real-time diagnostics for troubleshooting/informational purposes. • Built in freeze prevention. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 10: Specifications (Technical Data)

    48 Dimensions Depth inches (mm) 11 ¼ (286) Width inches (mm) (452) Height inches (mm) 30½ (775) Weight pounds (kg) 74 (33.5) Nominal V AC C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 11: Unpacking The Heater

    > than 140 °F (60 °C). Fig. 2 Rating plate [1] Serial number [2] Type of gas C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 12: General Rules To Follow For Safe Operation

    See chapter 4.4 (page 38). Fig. 4 Remove the front cover • 4. You must correctly vent your heater. See chapter 4.3 (page 15) on VENTING. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 13 • 10. Failure to install heater correctly may lead to unsafe operation and void the warranty. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 14: Dimensions And Minimum Installation

    Fig. 6 Dimensions [1] On/Off button [2] Reset button [3] Program key [4] Power ON or stand-by LED [5] LCD display [6] Up button [7] Down button C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 15: Installation Instructions

    Installation instructions Specialized tools The following specialized tools may be required for installation: • Manometer • Multi-meter • Combustion Gas Analyzer C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 16 CPVC, and ABS. Generic PP twin pipe can be used if certified to ULC-S636 and only with 90° elbow or T terminals. Maximum vent lengths and equivalent lengths per tables 9 and 10 apply. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 17 [7] Concentric vent kit (196016) [8] Maintain 12 in. (18 in. for Canada) minimum clearance above highest anticipated snow level maximum of 24 in. above roof C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 18 The minimum combustion air pipe length is one 90° elbow, except with the Common Vent System where the provided air intake grill cap is used. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 19 Table 13 For this example, the maximum allowable exhaust pipe length is For this example, the maximum allowable exhaust pipe length is 58.5 feet. 12 feet. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 20 For this example, the maximum allowable exhaust pipe length is 4.5 feet. Combustion air System used Twin pipe Number of 90° elbows needed: Number of 45° elbows needed: Table 22 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 21 12 in. combustion air inlet to any other application K Clearance to mechanical air supply inlet 72 in. 36 in. above if within 10 feet horizontally C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 22 A minimum clearance value determined by testing in accordance with section 2.20, or; b) A reference to the following footnote: “Clearance in accordance with local installation codes and the requirements of the gas supplier.” Table 24 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 23 J Clearance to non-mechanical air supply inlet to building or 36 in. 4 feet below or to side of opening; the combustion air inlet to any other application 1 foot above opening C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 24 A minimum clearance value determined by testing in accordance with section 2.20, or; b) A reference to the following footnote: “Clearance in accordance with local installation codes and the requirements of the gas supplier.” Table 25 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 25 Freeze damage to the water heater is not covered under warranty. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 26 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 27 Exhaust accessory can be removed with vent pipe attached to check gasket position. Fig. 17 Horizontal venting system (single pipe penetration) [1] Exhaust pipe [2] Intake pipe [LA] Minimum 4" Fig. 18 Exhaust connection C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 28 ▶ Do not install condensate drain tubing in areas where it may freeze. Fig. 20 Appliance drain installation [1] Leave minimum ¼" air gap [2] Trap required [3] 1 ½" x ½" PVC reducer C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 29 Listed below is an additional measure designed to further limit backdraft in conditions where there is a high risk of freeze 6720608643-19.1V damage. Fig. 23 Blackflow reducer (9301BFP) installed C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 30 [2] Better [3] Best [4] Enclosed vent pipe (Do not install damper) [5] Unconditioned space (Do not install damper) [6] Preferred damper position for vertical terminations C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 31 Common venting for 2 to 4 water heaters available with vertical or horizontal termination ▶ For installation details and requirements consult the respective common vent installation instructions listed below. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 32 No modification required on installations below 2000 ft Altitude (0 - 610 m) 26 - 46 ft Twin 6 - 37 ft system 38 - 62 ft C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 33 * Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.5 for instructions. 1) Full equivalent length (inlet + outlet piping + fittings) Table 30 Fan speed adjustment for 4" piping C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 34 * Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.5 for instructions. 1) Full equivalent length (inlet + outlet piping + fittings) Table 32 C 950ES (Pro TL 175 C) Fan speed adjustment for 3" piping C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 35 * Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.5 for instructions. 1) Full equivalent length (inlet + outlet piping + fittings) Table 33 Fan speed adjustment for 4" piping C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 36 Proceed directly to chapter 7.5 to confirm CO values are within range. Fig. 29 ▶ Press to enter P2 adjustment. The current setting will appear on the display (factory default). C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 37 248 CMR 5.08(2)(a)1 through 4.(b) EXEMPTIONS: The following equipment is exempt from 248 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 38: Combustion Air Requirements

    If the large amount of air space, which equates to about half of most average sized homes, is not available, the appliance must pull air from the outside (see twin pipe above). C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 39: Proper Location For Installing Your Heater

    32, page 40. clearances to combustible and non-combustible materials. See fig. 6, page 14. ▶ Hang the appliance on the bracket, see fig. 33, page 41. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 40: Gas Piping & Connections

    ▶ DO NOT connect to an unregulated or high pressure propane line or to a high pressure commercial natural gas line. 6720608158-64.1AL Fig. 32 Leveling wall mounting bracket C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 41 Apply some gas leak detection solution to all gas fittings. Bubbles are a sign of a leak. A combustible gas detector may also be used to detect for leaks. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 42: Gas Line Sizing Tables For Natural Gas

    For your convenience see below for an excerpt from gas line sizing tables for a single NG appliance. For details see the current NFPA Required input for C 950 (Pro TL 175 C) is 175000 BTU/hr and 199000 BTU/hr for the C 1050 (Pro TL 199 C). The gas supply system must be sized for the combined total maximum BTU/hr load requirements of all gas appliances running simultaneously.

  • Page 43: Gas Line Sizing Tables For Lp Gas

    2nd stage (low pressure) regulator and the appliance. For details see the current NFPA 54 or NFPA 58. Required input for C 950 (Pro TL 175 C) is 175000 BTU/hr and 199000 BTU/hr for the C 1050 (Pro TL 199 C). The gas supply system must be sized for the combined total maximum BTU/hr load requirements of all gas appliances running simultaneously.

  • Page 44: Water Connections

    If water quality exceeds one or more of the values specified below, Bosch recommends consulting a local water treatment professional for water softening/conditioning options. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 45: Filling The Condensate Trap

    Plumbing Connections (with shutoff valves) and Pressure Relief Valve 4.11 Filling the condensate trap The condensate trap can be filled before or after connecting the vent pipe. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 46: Domestic Hot Water Recirculation

    Fig. 40 Filling the condensate trap after installation without appropriate engineering and technical advice from a properly licensed professional in the locality where the installation is made. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 47: Space Heating Applications

    ▶ Propylene glycol may be used for freeze prevention ONLY on the space heating side of the heat exchanger. Do not use ethylene glycol (automotive antifreeze). C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 48 [10] Pump [11] Thermostatic mixing valve [12] Thermometer (optional) [13] DHW outlet [14] Water to water heat exchanger [15] Thermostat [16] Space heating zone [17] Zone controller C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 49: Measuring Gas Pressure

    Note: While in this mode the appliance will run constantly at maximum power and allow maximum water flow. For inlet gas pressure adjustment consider the following table: C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 50 P1 factory default setting (NG: 51, LP: 52) or setting from chapter 4.3.8. Fig. 47 Gas pressure test port (left tapping) C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 51: Electrical Connections

    Position of the fuses in control unit To check fuses, proceed as follows: ▶ Remove the front cover, see fig. 4, page 12. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 52: Operation Instructions

    Fig. 52 Power bar indicator (input) Fig. 58 Remote control indicator Fig. 53 Temperature indicator Fig. 59 Activation water flow (see chapter 12) Fig. 54 Error indicator C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 53: For Your Safety Read Before Operating Your Water Heater

    To combat this symptom, clean fixtures or replace with higher flowing ones if necessary. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 54: Use Of Optional Remote Control Accessory (Part No. 7709003213)

    13) and the temperature selector buttons on the front of the water heater operate identically. Contact your distributor to order the remote control accessory. Modification of the water C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 55: Operation

    Fig. 65 After following instructions indicated in “Troubleshooting” section, ▶ press reset button firmly in order to return heater to normal operation. Fig. 68 Locked condition C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 56: Maintenance And Service

    46. flames may be an indication of poor ventilation or • Check for debris and clean if needed. combustion air supply. Inspect the combustion air inlet C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 57: Winterizing For Seasonal Use

    ▶ Open hot water taps to drain and relieve pressure from the plumbing system. ▶ Drain water from the unit's heat exchanger by disconnecting inlet and outlet water connections from the heater. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 58 ▶ Assemble the condensate unit and all other parts in reverse order of disassembly. Fig. 70 Condensing heat exchanger unit Condensing heat exchanger unit maintenance; ▶ Shut off power. Disconnect power cord. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 59: Adjusting Co2

    Changes in these inputs can result in different CO ▶ Press the ON/OFF button to turn ON the heater. and CO values on the same appliance. Table 48 CO & CO target numbers C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 60 4. Press ON/OFF button to turn OFF the heater and then turn ON the heater. 5. Heater is ready for normal operation. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 61: Program Values

    This menu is only available when cascade mode is selected CC. Primary/ Contact Bosch Water Heating for Secondary mode details. Table 49 Program values, factory default settings and ranges. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 62: Control Board Diagnostics

    6th most recent error (H0 + H1 + H2) = Total of hours 7th most recent error 8th most recent error Table 52 9th most recent error C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 63: Troubleshooting

    Therefore, a higher flow rate than normal is needed to force the heater to activate. To check for a plumbing crossover, shut off the cold water C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 64: Water Is Too Hot

    5. Check inlet gas particle screen for blockage at gas inlet If this slows the flow through the tankless water heater connection on bottom of unit. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 65: Noisy Burner/Heater During Operation

    Ensure adequate combustion air is provided from the unit in accordance with specifications in chapter 4.4, page 38 Combustion Air Requirements. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 66: Problem Solving

    4. Possible defective control unit call Bosch Water Heating for further instructions. Bypass valve solenoid damaged 1. Check wire connection at the bypass valve, fig. 86, page 82. or disconnected. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 67 (non-volatile). three elbows, blocked vent or combination venting may cause this failure. See chapter 4.3, page 15. 4. Call Bosch Water Heating for further instructions. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 68 5. Check and adjust CO2 readings. See chapter 7.5, page 59. 6. Check that the minimum power fan speed has been adjusted to the proper value. See page 32. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 69 Measure voltage at the gas valve wire plug connection. The voltage should measure 24VDC between the left pair of wires and 24VDC between the right pair of wires when the unit is operating. If voltage is not proper, contact Bosch Water Heating for further instruction.

  • Page 70: Electrical Diagram

    [11] Gas valve [12] Temperature Heat Exchanger [13] Exhaust temperature sensor [14] Water valve [15] Communication port [16] Primary fan [17] ON/OFF switch [18] Secondary fan C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 71: Sensor Resistance Charts

    Sensor resistance charts Sensor resistance charts Fig. 77 Outlet / Inlet and HE immersion sensor characteristics C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 72 Sensor resistance charts Fig. 78 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 73: Functional Scheme

    Functional scheme Functional scheme Fig. 79 Functional scheme C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 74: Interior Components Diagram And Parts List

    [9] Reset button [20] Control unit [10] Program key [21] Up button [11] Flue gas limiter [22] Down button [12] Heat exchanger overheat sensor (ECO) [23] LED C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 75 Interior components diagram and parts list Fig. 81 Appliance overview C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 76 8 705 600 003 0 Mounting bracket 8 701 309 164 0 Holding bracket 8 708 104 103 0 Table 55 Screw 8 703 403 012 0 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 77 Interior components diagram and parts list 13.2.2 Group 2 Fig. 83 Components Diagram C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 78 8 716 102 607 0 Condensate drain pipe O-ring 8 704 701 094 0 Insulation (145x60) 8 702 303 027 0 Washer 8 704 701 088 0 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 79 Interior components diagram and parts list 13.2.3 Group 3 Fig. 84 Components Diagram C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 80 2 910 642 150 0 Plate gasket 8 701 004 049 0 Air supply duct 8 705 700 155 0 Screw 2 910 952 122 0 Table 57 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 81 8 700 715 389 0 Screw 2 910 149 181 0 Gas valve washer 8 700 103 014 0 Table 58 Gas filter 8 700 507 002 0 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 82 Interior components diagram and parts list 13.2.5 Group 5 Fig. 86 Components Diagram C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 83 8 738 702 548 0 Hot water pipe 8 738 702 559 0 Connector T 8 738 702 577 0 Clip 8 738 704 185 0 Table 59 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 84 Interior components diagram and parts list 13.2.6 Group 6 Fig. 87 Components Diagram C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 85 8 708 300 123 0 Transceiver cable 8 704 401 244 0 Kit Intelligent Cascading 7 709 003 962 Bypass wire 8 738 702 551 0 Table 60 C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)

  • Page 86: Protecting The Environment

    1) See chapter 4.14, page 49 and gas pressure table (to be filled out by installer) Table 61 Installation manual should be left with the owner after the installation is tested and completed. C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 87 Installer Checklist to be completed by installer upon installation C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
  • Page 88 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-965-7581 www.boschheatingandcooling.com U.S.A. Products manufactured by Bosch Thermotechnik GmbH Junkersstrasse 20-24 D-73249 Wernau www.bosch-thermotechnology.com Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.

This manual is also suitable for:

C 1050 esPro tl 175cPro tl 199c

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