Steffes 2102 Owner's And Installer's Manual
Room heating units
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Summary of Contents for Steffes 2102
- Page 1 V13 OWNER'S AND INSTALLER'S MANUAL for ROOM HEATING UNITS Models: 2102, 2103, 2104, 2105, & 2106 Applicable to Software Version 140159 "Manufactured in North America" ...
- Page 2 IMPORTANT The equipment described herein is intended for installation by a ¨ qualified technician in accordance with applicable local, state, and national codes and requirements. This manual should be retained by the owner upon completion of the ¨ installation and made available to service personnel as required. Disclaimer: In compiling this manual, Steffes Corporation has used ¨ its best judgement based upon information available, but disclaims any responsibility or liability for any errors or miscalculations contained herein, or any revisions hereof, or which result, in whole or in part, from the use of this manual or any revisions hereof. For Customer Use Please record your model and serial number below. This number is found on the identification label located on the lower portion of the heater's left side panel. Retain this information for future reference. Model No. ________________________________________________________________________ Serial No. ________________________________________________________________________ RECOGNIZE THESE SYMBOLS AS SAFETY PRECAUTIONS It is important, both for your personal safety and to avoid possible damage to the heater and your property, that you observe the safety instructions that are given following these symbols. ...
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Page 3: Safety Precautions
Safety Precautions 1. DO NOT energize the room heating unit while disas WARNING sembled or without all ceramic heat storage bricks in place. HAZARDOUS VOLTAGE: Risk of electric shock, ¨ 2. DO NOT store or use materials that may produce injury or death. This heater may be connected to more explosive or flammable gases near the room heating than one branch circuit. Disconnect power to all unit. circuits before servicing. 3. DO NOT violate the placement and clearance require Risk of injury or fire. Violation of the clearance ¨ ments specified in this manual. (Pages 2.012.02) requirements can cause i mproper operation of the equipment. Maintain the placement and clearance 4. DO NOT allow objects to fall between the room requirements specified. heating unit and the wall. 5. DO NOT place anything on top of the room heating unit. 6. DO NOT stick any objects through the air discharge grill. 7. Disconnect power to all circuits before servicing. This room heating unit may be connected to more than one branch circuit. 8. Installation of and/or service to this heater should be performed by a qualified technician in accordance with information contained herein and with national, state, and local codes and requirements. 9. A repeated message display of “CORE FAIL” on the heater’s control panel indicates a need for service by a qualified ... -
Page 4: Table Of Contents
Table of Contents Operation General Operation ................................1.01 Control Panel ................................. 1.01 Room Temperature Control ............................1.02 Turning Heater "OFF" and "ON" ........................... 1.02 Brick Core Charge Control .............................. 1.02 Automatic Charge Control ............................1.02 Manual Charge Control ............................1.02 Charge Control Override ..............................1.03 Maintenance and Cleaning ............................1.03 Installation Shipping and Packaging ..............................2.01 Placement ..................................2.01 Clearance Requirements ..............................2.02 Initial SetUp ................................. 2.02 Securing the Heater ............................... -
Page 5: Operation
1 Operation GENERAL OPERATION Steffes ETS room heating units utilize offpeak electricity available during those times of the day or night when the Power Company can supply electricity more economically. During offpeak hours, the room heating unit converts electricity to heat and stores the heat in its ceramic brick core. The heater stores heat at varying levels depending upon outdoor temperature, owner preference, utility peak conditions, and the requirements of the space being heated. A small amount of heat is radiated through the heater’s cabinet; however, most of the heating is accomplished by a thermostatically controlled blower. When the room temperature sensor senses a temperature below the room temperature set point, the blower circulates room air through the brick core. This air is heated and dis charged back into the room to maintain a constant, comfortable room temperature. On startup, odors relating to first time operation of the heating components may occur. There also may be an odor associated with dust accumulation if the heater is shut down for an extended period of time. Allow the heater to charge to its highest heat storage level (full core charge) to expel these odors. Refer also to mainte nance and cleaning section of this manual. CONTROL PANEL All operational functions of the heater are stored in a microprocessor and accessed through the control panel. (See Figure 1.) Generally, the user will only need to use this panel to adjust the room temperature; and, possibly, to set the brick core temperature if manual charge control is used or to set the time and day when utilizing the Steffes Time Clock Module. FourDigit Lighted Display The four digit LED displays specific operating information. During an editing process, the function locations and the values set in these locations are displayed for viewing and adjusting purposes. In standard operation, these digits continuously display current room temperature and one of the following brick core operating modes: A M C = Charge period or offpeak time. A M P M P ... -
Page 6: Room Temperature Control
The heater MUST remain "ON" if being used to supply a peak control signal to other con trolled loads. BRICK CORE CHARGE CONTROL The amount of heat stored in the heater’s brick core can be regulated by automatic or manual charge control. The heater is factory preset for automatic charge control regulation. If manual charge control is desired, the heater must be reconfigured at the time of installation. AUTOMATIC CHARGE CONTROL With automatic charge control, the brick core charge level is regulated automatically in relation to outdoor tempera ture and the heating requirements. An optional outdoor sensor or Steffes power line carrier (PLC) system is required. The outdoor sensor or PLC system monitors outdoor temperature and provides this information to the heater. The heater responds by storing heat in the brick core accordingly. No user interface is required to adjust the brick core charge level. MANUAL CHARGE CONTROL If manual charge control is being used, the brick core charge level must be regulated by the user. During the heating season, the user needs to periodically adjust the brick core charge level setting in relation to outdoor temperature and the heating requirements of the area. To configure the heater for manual charge control, refer to the Configuration Menu (Page 2.09). ... -
Page 7: Charge Control Override
Allow the area to WARNING be completely aired out before operating the heater. As for air borne particles, after they have been oxidized they are expelled Risk of injury or fire. Viola back into the room and may accumulate on the heater or other surfaces. Over tion of the clearance require time, these particles may appear as a black residue, commonly referred to as ments can cause improper soot. High concentrations of air borne particles from such things as aerosols, operation of the equipment. dust, candles, incense, pet hair, high humidity, smoke, or cooking can con Maintain the placement and tribute to poor indoor air quality and accelerate this process. To minimize clearance requirements the black residue buildup, clean the outer surface of the heater on a regular specified. basis. Wash the cabinet, only when cool, with a nonabrasive household cleaner. Do not use scouring powders or furniture polish. Steffes recommends using "Soft Scrub with Bleach" brand cleanser or an equal. Regularly vacuum around all sides of the heater. Check the back of the heater to make sure no objects have fallen behind it and the grill area to make sure there isn't anything obstructing air flow. Check all sides of the heater to be sure the required clearances are not being violated. Objects should never be placed on top of the heater. No additional routine maintenance is required; however, having a professional service technician clean the blower periodically will decrease the likelihood of undesirable blower noise due to dust accumulation. 2100 Series Operation 1.03 ... - Page 8 Operation 1.04 2100 Series ...
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Page 9: Installation
SHIPPING AND PACKAGING Steel edges can cut. Use The heater should always be transported in an upright position to avoid damage caution when installing or to internal components and insulation materials. The items shipped with each servicing equipment. heater include the following: INFORMATION PACKAGE MODEL BRICK 2 BOXES OF (includes O wner's Manual, Warranty Registration CERAMIC BRICK 2102 plugin 4 Boxes Card, and Brick Installation Tool) 2102 4 Boxes 2103 6 Boxes (shipped inside the box on 2104 8 Boxes top of heater ) 2105 10 Boxes 2106 12 Boxes ... -
Page 10: Clearance Requirements
CLEARANCE REQUIREMENTS Minimum Clearances Figure 2 There are minimum clearances that must be maintained when 4" choosing a location. (See Figure 2.) These areas surrounding the heater must be kept open and free of debris. Objects such 2" 1 1 2 " as curtains, furniture, or bed covers must be kept a minimum of 4" from all surfaces of the heater. The back clearance is provided by the wall mounting bracket or by the security base. DO NOT place objects of any kind on top of the heater. 15" WARNING 2" (12" Recommended) Minimum Clearances Risk of injury or fire. Violation of the Top 4" clearance requirements can cause im Front & Grill 15" proper operation of the equipment. Sides 2" Maintain the placement and clearance Back 1 1/2" requirements specified. A ... -
Page 11: Security Base
SECURITY BASE 120V plugin cord models come equipped with a security base. This base must be attached to the bottom panel of the room heating unit. It is packaged inside the shipping box on the back side of the heater. Step 1 Gently lay the heater on its back. For ease of installation, slightly elevate the bottom of the heater. Step 2 Align the holes in the security base with the predrilled holes in the bottom of the heater. Using the six #14 x 1¼" sheet metal screws provided in the mounting hardware package, attach the security base to the painted bottom panel. Step 3 After the base is attached, return the heater to its upright position and place in desired location. DO NOT energize the heater until installation is complete. LINE VOLTAGE ELECTRICAL CONNECTIONS Steffes room heating units are available for connection to various input voltages. Standard configuration for direct wired heaters is 240V; cord WARNING connected heaters are configured to plug into a 120V wall outlet. To determine the configuration of the heater, refer to the Unit Identification HAZARDOUS VOLTAGE: Label on the lower left side panel. (See Figure 4.) All heaters are UL Risk of electric shock, injury, or and cUL safety listed. death. DO NOT energize the Sample Unit Identification Label heater until installation is com Figure 4 plete. Equipment must be in stalled by a qualified technician ... - Page 12 Field Wiring After establishing placement of the heater, mount a field connec WARNING Step 1 tion junction box in a location where heatertofield wiring connections can be made easily. The junction box can be located Risk of injury or fire. Poor or beside the heater, behind the heater, or mounted in the floor marginal electrical connections below the heater. Steffes Corporation recommends a steel will cause the connection to junction box to provide protection against overheating. overheat and fail. Use extreme caution when making all electri The junction box MUST remain accessible for future cal connections. service to the heater and MUST be sized in accordance with all applicable electrical codes and regulations. Route the proper size and type of wiring from the breaker panel to the field connection junction box. Step 2 Step 3 Connect the field wiring to the wiring harness (umbilical cord) of the heater inside the junction box. Step 4 Remove the orange breaker panel label from the mounting hardware package. This label MUST be applied in the electrical service (breaker) panel and marked accordingly to identify the branch circuits feeding the room heating unit. Typical System Wiring Diagram ...
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Page 13: Cord Connected (Plugin) Room Heating Units
120V cordconnected room heating units must Grounded Outlet Grounding Pin Box (Fig 6C) only be used with receptacles that are of the (Fig 6A) grounding type and suitable for the load of the 3Slot Grounded heater. (See Figure 6 for cord and receptacle 2Slot Receptacle Receptacle requirements.) The room heater's cord has a plug as shown in Figure 6A. An adapter, as shown in Figure 6B, is available for connecting threeblade grounding type plugs to twoslot receptacles. The green grounding means extending from the adaptor must be connected to a permanent ground, such as a properly grounded outlet box as shown in Figure 6C. This adaptor should not be used if a threeslot grounded receptacle is available. HEATER CONTROL WIRING Steffes ETS heating equipment is generally controlled by the Power Company via a peak control signal. This signal can be sent to the heater using the Steffes Power Line Carrier system, low voltage wiring, a Steffes Time Clock Module, or line voltage wiring. In applications utilizing automatic charge control, outdoor temperature information is required and can be received via an outdoor sensor or power line carrier control. The 2100 series room heating unit is factory configured for use with power line carrier control. Refer to the Configuration Menu (Page 2.09) for information on configuring the heater for the application. POWER LINE CARRIER (PLC) PEAK CONTROL The optional Steffes Power Line Carrier (PLC) control system has the ability to communicate with the heater through the existing electrical circuits in the structure. With the power line carrier option, hard wired low voltage connections from the power company's peak signaling switch connect directly to the transmitting device. The switch signals peak control times to the transmitter, the transmitter sends the signal to an unlimited number of 2100 series heaters, which receive this information and respond accordingly. In addition to providing peak control signals, the transmitter also provides outdoor temperature information for automatic charge control, room temperature set back, and anticipated peak utility control signals (if applicable). As the PLC system is optional, it must be specified at the time of ordering. If utilizing a PLC system, refer to the Owner's and Installer's manual accompanying the transmitting device for information on the installation and operation of the power line carrier control system. LOW VOLTAGE DIRECT WIRED PEAK CONTROL ... - Page 14 Single Unit Low Voltage Connections Direct Wired Controls Figure 7 LOW VOLTAGE JUNCTION BOX GRAY OUTDOOR SENSOR GRAY GREEN (ROOM TEMPERATURE SETBACK) YELLOW ( ANTICIPATED PEAK) BLUE/WHITE (PEAK) BLUE (L.V. HOT) ROOM TEMPERATURE ANTICIPATED PEAK SETBACK PEAK CONTROL SWITCH CONTROL SWITCH CONTROL SWITCH (OPTIONAL) (OPTIONAL) Multiple Unit Low Voltage Connections Direct Wired Controls Figure 8 GRAY OUTDOOR SENSOR (SEE NOTE 2) GRAY BLACK GRAY BLUE/WHITE OUTDOOR SENSOR GRAY (SEE NOTE 2) BLUE (NOT USED) BLACK (L.V. COMMON) TO NEXT HEATER BLUE/WHITE (PEAK) (6 HEATERS MAX) BLUE (L.V. HOT) (SEE NOTE 1) PEAK CONTROL SWITCH Notes: 1. Connecting the low voltage hot (blue) wire from multiple heaters to a single control switch may cause damage to the system. In multiple heater applications, connect the wires as shown for proper ...
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Page 15: Time Clock Module Peak Control
TIME CLOCK MODULE PEAK CONTROL IMPORTANT The Steffes time clock module is another option for providing a peak control signal to the heaters. The optional time clock module is installed inside the Unless servicing, power to the heater’s line voltage electrical compartment and interfaces with the heater’s heater should not be turned off relay board. Peak control times are required to be programmed into the at the circuit breaker when heater once the module is installed to enable the time clock feature. using the Steffes Time Clock In addition to providing peak control signals, the time clock module can also Module. If power is off to the provide automatic room temperature set back, if desired. Refer to the blower/control circuit for an instructions provided with the time clock module for more information on extended period of time, it may the installation and operation of this device. be necessary to reset the cur rent day and time. LINE VOLTAGE PEAK CONTROL Line voltage peak control is also an option, but is not the preferred method as it is usually more complex and expensive. If line voltage control is utilized, the blower/control circuit of the heater must be powered with an uninterrupted circuit. An external switching device, such as a relay panel, is necessary to directly control the heating element charging circuits. If relying on this method of control, the faceplate on the heater must continu ously display a brick core operating mode of “C” (charge) regardless of whether it is an offpeak or onpeak time. OUTDOOR TEMPERATURE SENSOR The outdoor sensor is an optional device used to provide current outdoor temperature information to the heater for automatic core charge control. The heater responds by automatically storing heat in its brick core according to outdoor temperature and the heating requirements. The outdoor temperature sensor can be installed in one of two ways: direct wired to the system or wired to the Steffes power line carrier system. If direct wired to the heater, one sensor per heater is required. Refer to the Low Voltage Connection Diagrams (Figures 7 and 8) and the instructions included with the sensor for informa tion on the installation of this device. 2100 Series ... -
Page 16: Brick Loading
BRICK LOADING IMPORTANT Step 1 Verify that the heater is not energized. Step 2 Direct Wired Room Heating Units Only Place the heater The heater MUST be se ¨ against the wall support bracket and use the carriage bolts pro curely mounted to the wall vided to securely mount the heater to the wall. or to its security base prior to brick loading. Step 3 Place the shipping box in front of the heater before loading the To properly seal the brick ¨ brick to catch brick debris, to protect the flooring, and for easy core, make sure all bricks cleanup upon completion of the installation. are installed correctly. Step 4 ... -
Page 17: Configuration Menu
Start Brick Core Charge Set Point If utilizing automatic charge control as set in C000, this value indicates the outdoor temperature at which the heater will start charging. C002 Full Brick Core Charge Set Point If utilizing automatic charge control as set in C000, this value indicates the outdoor temperature at which the heater will target a full core charge. C003 Power Line Carrier (PLC) Channel Selection If using PLC communication, this setting must match the channel setting in the Steffes PLC transmitting device. A value of zero indicates power line carrier communication is disabled. C004 Optional Controls Configuration Value Configuration Description 154 No Time Clock Module/Utilizing PLC or Manual Charge Control 155 No Time Clock Module/Direct Wired Outdoor Sensor 158 Time Clock Module/Manual Charge Control 159 Time Clock Module/Direct Wired Outdoor Sensor C005 Control Switch Configuration If utilizing power line carrier control, the Steffes time clock module or line voltage control, this value should be zero. For all other applications, this value should be one (1). This configuration MUST be set to a value of six (6) for all 2100 Series room heating units. C006 C007 Charge Factor This configuration should be set to a value of thirty (30). C008C012 Currently not utilized in 2100 Series room heating units. 2100 Series Installation 2.09 ... -
Page 18: Installer's Final Checkout Procedure
45.00 Step 12 Present owner with the manual and (AMP draw is calculated by taking the total input wattage di warranty information. The owner's vided by the input voltage. Allow +/ 5% tolerance at nominal registration card must be completed input voltage.) and returned to Steffes Corporation to ensure warranty coverage. The owner should retain the top portion of the card for their records. Step 13 Take the time needed to instruct the owner on how to operate the heater. Many service calls with new ETS systems are a result of owner confusion on equipment operation. The time spent in training greatly reduces the chance of a call back. Installation 2.10 2100 Series ... -
Page 19: Appendix
Appendix Appendix SPECIFICATIONS MODEL 2102 2102 2103 2104 2105 2106 plugin Length inches 30 30 37 44 51 58 Height inches 24.5 24.5 24.5 24.5 24.5 24.5 Depth inches (w/out wall bracket) 10.5 10.5 10.5 10.5 10.5 10.5 (w/wall bracket) 12 12 12 ... -
Page 20: Parts Diagram
PARTS DIAGRAM 28 57 42 53 56 43 40 49 52 27 35 31 39 32 17 26 33 24 20 7 51 18 46 16 11 48 6 29 9 38 41 21 36 34 37 14 19 30 50 ... -
Page 21: Parts List
Appendix PARTS LIST When ordering replacement parts, please include model number and serial number of the heater. 2100 Series Appendix A.03 ... -
Page 22: Internal Line Voltage Wiring Diagrams
INTERNAL LINE VOLTAGE WIRING DIAGRAMS Models 2102, 2103, 2104 , 2105, and 2106 Connections shown are for systems with a 208/240V blower. If utilizing a 115V blower and controls circuit, the blue/black (L1) connection must be the ungrounded (hot) conductor of the power feed. Refer to the Unit Identification Label on the lower left side panel for proper blower and heating element voltages. Element #4 Red Brown Element #3 Black Blue Charging Limit Element #2 Brown Red Red Element #1 Blue Charge Circuit #1 Red Base I/O PCB Black L1 120 240 Blower Resistor Damper Black Charge Circuit #2 Damper ... -
Page 23: Internal Low Voltage Wiring Diagram
INTERNAL LOW VOLTAGE WIRING DIAGRAM A M P M RED OUTPUT THERMOCOUPLE M + YELLOW RED CORE THERMOCOUPLE + YELLOW BLUE Low Voltage Hot GREEN Room Temperature Set Back YELLOW Anticipated Peak Control (Specialty Applications) BLUE/WHITE Peak Control BLACK Low Voltage Common (Grounded) GRAY Outdoor Sensor Automatic Charge Control GRAY Outdoor Sensor PURPLE Room Sensor Builtin or Remote Mount PURPLE Room Sensor 2100 ... -
Page 24: Help Menu
Appendix HELP MENU The 2100 series room heating unit contains a Help Menu which may be accessed by pressing and releasing the M button until "HELP" is displayed on the faceplate. Scroll through the menu by pressing either the up or the down arrow button. Display Reading Description Fxxx Firmware Version Number Indicates the version of software installed. O xx Outdoor Temperature Indicates current outdoor temperature as recognized by the heater. tL:xx Target Level Indicates the percentage of brick core charge the heater targets during an off peak period. CL:xx Charge Level Indicates the percentage of heat storage currently in the brick core. HE x Heating Elements Active Indicates the number of heating elements currently energized. PC x Power Line Carrier Channel Indicates the channel on which the heater is set to receive PLC communication signal. P x Power Line Carrier Net Hit Rate Percentage Indicates the percentage of "GOOD" communica tion packets received by the heater from the PLC transmitter system. PS x Indicates which Specialty Timer the system is currently using. The value displayed will be zero if the Specialty Timer is not being utilized. CC_x Charge Mode Operation Indicates the charge control method being utilized during offpeak periods. CA_x APeak Mode Operation Indicates the charge control method being utilized during anticipated peak periods. C1_x Specialty Timer #1 Charge Mode Specialty Applications Only. C2_x Specialty Timer #2 Charge Mode Specialty Applications Only. ERROR CODES ... - Page 25 Main processor control board temperature sensor is out of normal operating range. Verify that none of the clearances have been violated and inspect the condition of the processor control board. 08 Currently not utilized. 09 Currently not utilized. 10 Discharge air temperature has exceeded maximum operating temperature. 20 There is no communication occurring between the Base I/O board and the processor control board. This may be caused by a defective board interface cable or an unresponsive Base I/O board. 21 Contact a qualified service technician. 22 Contact a qualified service technician. 23 There is no communication occurring with the Steffes Time Clock Module. 24 Temperature sensor offset/reference is out of range and indicates that one of the sensors may be shorted to ground or the processor control board may be out of calibration. 25 Contact a qualified service technician. 26 Insufficient Main Control Board Memory. Contact a qualified service technician. 27 Insufficient Permanent Memory. Contact a qualified service technician. 28 Permanent memory change has been made. Press the M button to accept. As this error message indicates a change has been made to the software program, it is important to verify that all location settings are correct for the application. 29 Onboard communication system is not fully operable. Contact a qualified service technician. 30 Base I/O control board is in test mode. Check the jumper configuration on the circuit board. 31 ...
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Page 26: Hinging The Right Side Panel
HINGING THE RIGHT SIDE PANEL For ease in servicing, the right side panel of the 2100 Series room heating unit hinges open. Follow the instruc tions below to hinge the right side panel: 1. With the painted front panel off, remove the screw located above the grill slats on the lower right side of the heater. 2. Loosen the screw located at the top right corner of the electrical compartment. 3. Push out on the right side panel. Appendix A.08 2100 Series ... -
Page 27: Glossary
GLOSSARY Anticipated Peak ~ Used only by certain power Microprocessor ~ Device on the circuit board of companies as an alternative method of storing heat the heater which stores and processes the informa in heater's brick core. Also referred to as "Pre tion for controlling the operation of the heater. Peak". Offpeak ~ The time during the day or night when Automatic Charge Control ~ Method of brick the power company can supply electricity more core charge regulation where a sensor monitors economically and may offer a special incentive outdoor temperature to automatically adjust the such as a reduced electric rate or billing credits for brick core temperature. the electricity consumed during this time. Typi cally, electrical usage is not controlled during an Brick Core Charge Level ~ The amount of heat offpeak time. (The heater will provide heat to currently stored in the brick core of the heater. satisfy comfort requirements during this time as well as charge or store heat in its brick core.) Charge Period ~ Offpeak time in which the heater is allowed to store heat in its brick core. Onpeak ~ The time during the day or night when the power company experiences a high demand Control Panel ~ Contains the buttons to adjust and for electricity. To limit demand, certain appli the display to indicate heater functions. Located on ances are controlled to avoid usage by them and/or the front of the heater in the upper right corner. a premium for the electricity consumed during this time may be charged to discourage electrical Control Period ~ Onpeak time in which the heater usage. (The heater is not allowed to charge or is not allowed to store heat in its brick core. store heat in its brick core during peak periods. Heating requirements are satisfied by the heat stored in its brick core during the previous off ... -
Page 28: Warranty
Warranty Registering your purchase is an essential step to ensure warranty coverage. A Warranty Registration card is included with the Owner's Manual. Simply complete, detach the bottom portion, and return the card today. Retain the top portion of the card for your files. WARRANTY STATEMENT Steffes Corporation (“Steffes”) warrants that the Steffes Electric Thermal Storage Heating A ppliance is free from defects in m aterials and w orkmanship under n ormal use a nd service. Steffes’ obligation under t his Warranty is limited to the repair or replacement of the appliance o r parts only which prove to be defective under normal use w ithinfive (5) yearsof the date of installation and which Steffes’ examination of the returned appliance or p art(s) shall verify to Steffes’ satisfaction that it is defective. Optional Steffes controls and accessories have a one (1) year warranty coverage period. The user shall be responsible for any labor costs a ssociated with the repair or replacement of the appliance or part(s), including the cost of returning the defective appliance or part(s) to Steffes Corporation. This Warranty is void if the heating appliance is moved from the premises in which it was originally installed. This Warranty shall n ot apply to an a ppliance or part which has been a ltered in a ny respect, or improperly i nstalled, serviced ...
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