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1. CORE BLOWER See Ee GROUND BAR BLACK HIGH Auf EXCHANGER Cap CONTROL CIRCUIT WHITE com EUTRAL LUG o N co MANUAL 2 Fe O Dt DE DE m 5605 RESET T 629 29 29 29 40 Red amp White To 2 D D D D Primary Loop Pump SOZ m H H MUU O O QU O U Max 1 2 AMPS BASE IO BOARD Black amp White 2 S S S Q ei To Air Handler Pump d GE VA Amp 1 2 AMPS s mp 5 2 Q 12120 i j n s H L2 240 BD 4 E kosli kal COM BLACK ORANGE H RELAY N RESISTOR S To Optional Air Handler R BLUE WHITE AMPER BLUE BLA
2. STEFFES CORPORATION Manufactured in North America OWNER S AND INSTALLER S MANUAL for COMFORT PLUS HYDRONIC 5100 SERIES Models 5120 5130 amp 5140 Applicable to Software Version 140 159 o IMPORTANT The equipment described herein is intended for installation by a qualified technician in compliance with applicable local state and national codes and requirements To insure proper installation and operation of this product completely read all instructions prior to attempting to assemble install operate maintain or repair this product Upon unpacking of the system inspect all parts for damage prior to installation and start up This manual should be retained by the owner upon completion of the installa tion 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 After the heating system is installed Steffes disclaims any responsibility or liability for mold mildew growth and or any damages caused by either We strongly recommend that the user follow the moisture mold and mildew pre vention guidelines of the Environmental Protection Agency EPA available
3. Min Circuit Ampacit 70 Amps Max Fuse or Circuit Breaker Size 15 Amps Opt House Blower 4 7 Amps LOSIHP 240 Volts Step 1 Remove the electrical panel cover Charge Circuit 240209 volts DT ene Heat Recovery CE3 Amps COT HP 20 volts Charge Circuit 2 240 208 Volts 9 600 7 200_ Watts fa una 1 1 Charge Circuit 3 240 208 Volts _9 600 7 200_ Watts nit Clearance Requirements series Step 2 Route all line voltage wires through a Charge Circuit 4 240 208 Volts 9 600 7 200_ Watts Allow three 3 inches from back and right side of 5 i i i ircui unit and six 6 inches from the top of the unit to knockout and into the electrical panel of RUR DE Amps Te ie ire combustibles Allow thirty six 36 inches front and left side clearance to provide space for servicing the Comfort Plus Hydronic Min Circuit Ampacity 212 185 Amps One 1 inch bottom clearance is required to Max Fuse or Circuit Breaker Size 225 200 Amps combustibles Step 3 Make proper field wiring connections to the Comfort Plus Hydronic breakers Refer to the Line Voltage Wiring Diagrams Pages A 05 A 07 for more information on these connections CONTROLS CIRCUIT THIS MUST BE A 120 240V OR 120V 208V CIRCUIT CHARGE CIRCUIT 1 IMPORTANT EES To ensure proper operation and safety 2 all line voltage circui
4. If the system is located in an area with minimal heating requirements such as a utility room the static heat recovery unit can maximize the system s efficiency by transferring this static heat to a more desirable location Features Connects directly to the Comfort Plus Hydronic system to interface with the internal controls of the system for automatic operation Specifications e Wattage 130 WATTS e Motor 1 HP 60 HZ e Voltage 208 240 VAC e Maximum Static Pressure 15 inches Water Column e 0 15 SP 130 CFM NOTE In applications using the Steffes Air Handler the static heat recovery unit would not be used If the area available to install the Comfort Plus Hydronic system is less than 100 square feet Steffes Corpora tion recommends installing a low voltage cooling thermostat connected between R and G on the 12 position terminal block to maintain a temperature less than 85 degrees Fahrenheit COMFORT PLUS STAND Some applications such as garages may require that the heating appliance be elevated in order to meet building codes The Steffes Comfort Plus stand elevates the 4100 or 5100 series Comfort Plus system 18 This stand is shipped as a kit and requires field assembly Order Item 1301585 Comfort Plus Hydronic 10 135 Order Item 1302110 Accessories A Stapa Optional Accessories W 2 02 Installation AY CAUTION Risk of sharp edges Can cause
5. PROT JOMOTY 2100 2 dung urnurixeiqv dINV 09 y dINV 0S 4 Id INVOS 4 Peed rdniniy sur sA A0ye smono 3018120 MA nduy Zum x pu ddy Comfort Plus Hydronic Appendix W A 01 PARTS DIAGRAM x pu ddy Appendix W A 02 Comfort Plus Hydronic Appendix PARTS LIST When ordering parts please include the system model and serial number DESCRIPTION Electrical Panel Cover non recessed breakers Electrical Panel Cover recessed breakers Front Painted Panel PCB Relay Expansion Board Terminal Block 12 Position Transformer 75VA PCB Processor Control Board Processor Control Boad Mounting Bracket Breaker 15 Amp Breaker 60 Amp Breaker Standoff Electrical Panel Insert Center Electrical Panel Insert Left Electrical Panel Insert Right Harness Breaker to Element Black Harness Relay to Element Red Front Air Channel Front Standoff Front Galvanized Panel Upper Brick Core Temperature Sensor Lower Brick Core Temperature Sensor Core Blower Assembly Pressure Relief Valve Brick Tray Insulation Block TR19 Heating Elements 2400W 240V Heating Elements 2850W 240V Heating Elements 3100W 240V Brick Boxed Right Side Core Outdoor Sensor Knockout Style Right Side Painted Panel Right Side Standoff Micropore
6. outlet water temperature The heated water is then pumped to the area zone from which the heat call origi nated In heat pump applications a heat call from the room thermostat first utilizes the heat pump s heating capacity to satisfy comfort requirements As the outdoor temperature declines and the heat pump s heating capacity begins to diminish the Comfort Plus Hydronic modulates heat to help maintain a comfortable air temperature in the duct BRICK CORE CHARGE CONTROL The amount of heat stored in the brick core of the Comfort Plus Hydronic system is regulated automatically in relation to outdoor temperature and the heating requirements The outdoor sensor supplied with the system monitors outdoor temperature As the outdoor temperature decreases heating requirements increase and the Comfort Plus Hydronic system stores more heat accordingly CHARGE CONTROL OVERRIDE The Comfort Plus is equipped with a charge control override feature that allows the user to force the system to target a full core charge level This override can be initiated or cancelled at any time If an override is initiated the system targets a full core charge level during the next off peak period It continues to charge during off peak hours until the system achieves full maximum core charge or until the override is cancelled Once full charge is achieved or the override is cancelled the system charges according to its standard configuration Initiating the O
7. owner preference utility peak conditions and the requirements of the space being heated A heat call from the room thermostat energizes the primary water loop pump The variable speed core blower automatically adjusts its speed to achieve the desired outlet water temperature The heated water is then pumped to the area zone from which the heat call originated The versatility of this system allows it to fit many applications The Comfort Plus Hydronic is designed for use as either the sole heating source stand alone furnace or as a supplement to ducted heating systems such as heat pumps SYSTEM USE DURING CONSTRUCTION PHASE Like most heating equipment manufacturers Steffes strongly recommends that Construction Heating Units be used instead of the permanent heating system during the construction phase of a new home Use of the perma nent heating system during the construction phase may contaminate the duct system and or internal areas of the heating system This may cause poor indoor air quality issues and or improper system operation once the home is completed A suitable alternative heating system must be used during the construction phase SYSTEM START UP On start up of the Comfort Plus Hydronic system odors relating to first time operation of the heating components may be experienced Allow the system to charge to its maximum brick core charge level on start up to expel these odors If the Comfort Plus Hydronic h
8. 5 oz no o 20 Red amp White To o amp m 04 D m 22 Primary Loop Pump 08 E O O O Max 1 2 AMPS l M l E nn m Black amp White 2 lex S e S S Q A To Air Handler Pump 4 SAmp w Hr Low HIGH Max 1 2 AMPS sl a Foetz A BOA SEE NOTE 2 8 EEN xo Co WHITE 12 240 GEN BLOWER No Be RELAY RESISTOR D Q D D To Optional Air Handler Z H RESISTER 2 IS BLUE WHITE DAMPER BLUE BLACK BLUE RED e in BLACK YELLOVV RED A RELAY 1 RELAY 2 RELAY 3 RELAY 4 COM COM E COM COM NO NO NO NO 1 4 Amp em LI d NO feom L2 120 RELAY 5 RELAY 6 To Optional Static Heat Recovery System RELAY 7 RELAY 8 WHITE BLACK EXPANSION 2 E x ba BLACK YELLOW BOARD SoM NO 75 VA HEATING ELEMENTS Element 8 TRANSFORMER 240v 24y Element 7 Element 5 Element 4 Element 2 Element 1 Appendix NOTE 1 Line Voltage Field Wiring Connections See Figure 8 for information on proper circuit phasing NOTE 2 For more information regarding pump circulator wiring reference Figures 9 15 and 16 in the Installation section of this manual Appendix W A 05 Comfort Plus Hydronic Line Voltage Wiring Diagram Model 5130 240V OR 208V SYSTEMS ONLY Use copper or aluminum conductors rated for 75 C o
9. Heat Call Status indicates the current heat call status as determined by the room H L J thermostat s The faceplate displays the highest heat call value present If receiving a Stage 1 Forced Air Heat Call and a Hydronic Heat Call the display will read HC_3 HC_0 No Heat Call 1 Stage 1 Forced Air Heat Call if equipped with Air Handler HC_2 Stage 2 Forced Air Heat Call if equipped with Air Handler 3 Hydronic Heat Call COOL Cooling Call if equipped with Air Handler A bar illuminates on the lower portion of the display s third digit when ever the heating elements are energized L L H Brick Core Charge Level CL charge level followed by a number indicates the S current percentage of heat stored in the brick core represents zero percent and CL F represents a full core charge level e the current percentage of brick core charge being targeted by the system A display of tL _ B L l 5 d Targeted Brick Core Charge Level tL target level followed by a number indicates indicates a target level of zero percent and tL F indicates a full core charge target level Operation W 1 02 Comfort Plus Hydronic ROOM TEMPERATURE CONTROL Room temperature is adjusted at the wall thermostat s A heat call from the room thermostat energizes the primary water loop pump The variable speed core blower automatically adjusts its speed to achieve the desired
10. Insulation Panel Top Painted Panel Core Limit Jumper Left Side Front Painted Panel Limit Harness Top 5120 ITEM NO 5940853 5940845 5940589 1023067 1023078 1016040 1017039 1023065 5940850 1024000 1024002 5940868 5940862 5940864 5940860 1041503 1041701 5940820 5940513 5940579 1041725 1041730 1100104 1159029 5940548 1054144 1014021 N A 1014024 5903015 5940559 1302033 5940587 5940570 1050122 5940590 1041510 5940597 1041506 5130 ITEM NO 5940852 5940845 5940526 1023067 1023078 1016040 1017039 1023065 5940850 1024000 1024002 5940868 5940862 5940864 5940860 1041515 1041713 5940822 5940513 5940524 1041725 1041725 1041730 1100104 1159029 5940548 1054144 1014021 N A 1014024 5903015 5940557 1302033 5940525 5940570 1050121 5940590 1041510 5940529 1041505 5940852 5940845 5940588 1023067 1023078 1016040 1017039 1023065 5940850 1024000 1024002 5940868 5940862 5940864 5940860 1041502 1041700 5940824 5940513 5940578 1041725 1041725 1041730 1100104 1159029 5940548 1054144 1014021 1014250 N A 5903015 5940558 1302033 5940586 5940570 1050120 5940590 1041510 5940596 1041505 Optional voltages are available Contact factory with model number and serial number of the system for information Appendix W A 03 Comfort Plus Hydronic PARTS LIST CONTINUED N When ordering parts please include the system model and serial n
11. PLC system is out of normal operating range Check the outdoor sensor attached to the transmitting device and the transmitter for proper operation 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 Currently not utilized Currently not utilized Outlet water temperature has exceeded the maximum standard operating temperature There is no communication occurring between the Base I O board and the processor control board This can be caused by a defective board interface cable or an unresponsive Base I O board There is no communication occurring with the first relay expansion board The board interface cable may be defective or the first expansion board may be unresponsive There is no communication occurring with the second relay expansion board The board interface cable may be defective or the second expansion board may be unresponsive There is no communication occurring with the Steffes time clock module Temperature sensor offset reference is out of range and indicates one of the sensors is shorted to ground the processor control board is out of calibration or the blower control circuit is connected to an improper input voltage Power line carrier system is active however no good data has been received Insufficient main control board memory Contact a qualified service technician Insu
12. and clearance require ments specified Risk of personal injury Plumbing and other surfaces can be hot Use caution when work ing near the system 5 DO NOT place anything on top of the system 6 Disconnect power to all circuits before servicing as this heating system may be connected to more than one branch circuit 7 Use caution when working around the heating system as inlet and outlet piping can be very hot 8 Installation of and or service to this system should be performed by a qualified technician in compliance with information contained herein and with national state and local codes and requirements 9 A repeated message display of CORE FAIL indicates a need for service by a qualified technician SAFETY DEVICES The Comfort Plus Hydronic incorporates safety devices to ensure normal operating temperatures are maintained The chart below describes these safety devices DEVICE NAME FUNCTION LOCATION ON SYSTEM Core Charging High These limit switches monitor brick core charging and In the limit bar panel Limit Switches interrupt power to the heating elements if the normal on the left side of the Auto Reset operating temperature is exceeded brick storage cavity Heat Exchanger This linear limit switch monitors the temperature of the Inside base on left side Limit Switch water in the exchanger and interrupts power to the core Manual Reset blower if a water temperature of 250 F is exceeded If this limit s
13. at http www epa gov For Customer Use Please record your model and serial number below This number is found on the identification label located on the lower left side of the Comfort Plus Hydronic heating system Retain this information for future reference Model No Serial No A A RECOGNIZE THESE SYMBOLS AS SAFETY PRECAUTIONS It is important both for your personal safety and to avoid possible damage to the equipmentand your property that you observe the safety instructions given following these symbols SAFETY PRECAUTIONS 1 DO NOT energize this heating system while disassembled or without the ceramic heat storage brick in place Risk of explosion Can cause injury or death Operating the system without the pressure relief valve installed can cause an explosion Connect the pressure relief valve in a vertical 2 DO NOT operate this heating system without the factory provided pressure relief valve in place 3 DO NOT use or store materials that may produce upright position with the supplied fittings DO explosive or flammable gases near the system NOT modify this assembly DO NOT cap plug or otherwise obstruct the outlet of the pres 4 DO NOT violate the placement and clearance sure relief valve requirements specified in this manual Page 3 02 Risk of fire Can cause injury or death Viola 3 03 tion of the clearance requirements can cause improper operation of the equipment Main tain the placement
14. body parts SE 77 under the system when Including lifting Breakers ALL 51008 _ Use care to keep objects ABU hands and or body parts clear of system when Appendix lifting Appendix W A 11 Comfort Plus Hydronic GLOSSARY Air Separator Device used to remove air from the water so the air does not get into the closed loop system and cause damage to other components Air Vent Device used to release air from the system The air vent is generally mounted on top of the air separator Anticipated Peak Used only by certain power companies as an alternative method of storing heat in the brick core Indicated by an A on the system display Automatic Charge Control Method of brick core charge regulation where a sensor monitors outdoor temperature and automatically adjusts the brick core charge target level accordingly As the outdoor temperature drops the target level rises Brick Core Charge Level The amount of heat stored in the brick core of the system Charge Period Off peak time in which the system is allowed to store heat in its brick core Indicated by a C on the system display Control Panel Contains the buttons to adjust and the display to indicate system functions Located on the front of the system Control Period On peak time in which the system is not allovved to store heat in its brick core Indicated by a P on the system display Edit Mode P
15. ee ETE rE E EE E EE SEE aSr Er EE T SEE EE TES EE TEE ES 2 01 Primary Loop EEN 2 01 E e EL EE 2 01 Static Heat Recovery E EE 2 02 Comfort Plus Stand TEE a E E E O EE r eer eebe ed 2 02 Installation Shipping and Packa ump eege E ap EEEE SEEE EEEE EEEE TE EEE E E EE aE EEEO ETETE E A EOE EE AEAEE 3 01 Placement and Clearance Requirements 3 02 3 03 EE 3 03 000000 0 0 00 3 04 Heating Element and Air Channel Installation 3 04 3 05 Brick Core Temperature Sensor Installation 0 0 0 0 3 05 Line Voltage Electrical Connections 6 3 06 3 07 Low Voltage Electrical Connections Peak EE 3 07 3 08 Outdoor Temperature enger e ase RDA T R ES EEE nr ERE EEE ES EES 3 08 3 09 2222020000 0000 0000 0 3 09 3 10 Air Conditioner Heat Pump Interface sisser sesscestes teceestetssnstes DURSA L iednvasdepsdceesgedecesseossensssestgestenstensteys 3 10 Pressure Relief Valve installafion eege EEN RD ENEE 3 11 PUM EE 3 11 3 13 Auxiliary Load Conto lse ieena sk er menene EES 3 13 Configuration Meng 3 14 3 15 Installer s Final Check
16. out Procedure 0 eresse a AR EEEE aE OEREN ESAE SE a E SEEST ee a 3 16 Appendix Sur so n 42227702002000 0000 00 000 0000000000 01 Parts Dia Stamnes 00 00 00 0 000000 EE 02 Parts dine Aeneas E 0000000000 03 04 Internal System Wiring Diagrams Line Voltage ee A 05 A 07 Internal System Wiring Diagram Low A 08 Help Menu ccs eso H DU died A 09 Eitor EE 09 10 Disassembling the Comfort Plus Hydronic System 11 a 0222220000 0000000000 000000 A 12 VVarranty Table of Contents Comfort Plus Hydronic Operation GENERAL OPERATION The Steffes Comfort Plus Hydronic heating system stores off peak electricity in the form of heat Off peak electricity is available during times of the day or night when electricity is plentiful and the power company may supply it at a lower cost 2 o 2 o Operation of the Comfort Plus Hydronic is automatic VVhen off peak hours are available the system converts electricity to heat vvhich is then stored in its ceramic brick core The amount of heat stored in the brick core varies in relation to outdoor temperature
17. the pressure relief valve in a vertical upright position This pressure relief valve is sized to service the needs of the Comfort Plus Hydronic heating system If multiple heating systems are being used pressure relief valving for the other system MUST be provided separately Step 1 Remove the exchanger access panel and locate the pressure relief valve assembly Step 2 Connect the pressure relief valve to the outlet water port on the left side of the Comfort Plus Hydronic It is extremely important that the following conditions for installation of this part are met e Ensure all connections including the valve inlet are clean and free from any foreign material e Use pipe compound sparingly or tape on external threads only e Mount the pressure relief valve in a vertical upright position directly to the outlet water port of the system Under no circumstances should there be a flow restriction or valve of any type between the safety relief valve and the pressure vessel Step 3 Use schedule 40 pipe to install a discharge line for the pressure relief valve This discharge line MUST be connected from the valve outlet with no intervening valve and directed downward Risk of discharged hot water and or e to a safe point of discharge steam Can cause personal injury or K e allow complete drainage of both the valve property damage During operation e and the discharge line the pressure relief valve may dis e e be independently
18. the system has been energized for more than two 2 minutes the 15 amp circuit breaker must be powered off and back on to gain access to this menu Step 2 Press and release the M button until the faceplate displays CONF Step 3 Press the up arrow once and the faceplate will display C000 The faceplate will flash between C000 and the corresponding configuration value Step 4 If necessary edit the configuration value by pressing and holding the M button while using the up or the dovvn arrovv button to change the value Step 5 Once the value is correct release the buttons and press the up arrow button to go to the next configura tion C001 C002 etc Step 6 Repeat steps 4 through 5 until all configuration settings have been adjusted to the desired values Step 7 Once configured use the down arrow to leave the Configuration Menu In most applications only a few if any configuration changes will be necessary Following is a description of the configuration settings and their function C000 Off Peak Method of Charge Control Sets the method of brick core charging to be used during off peak charge periods System is configured for automatic charge control which is a value of five 5 C001 Start Brick Core Charge Set Point If utilizing automatic charge control as set in C000 this value indicates the outdoor temperature at which the system will start charging C002 Full Brick Core Charge Set Point If utilizi
19. 0848 5940802 5940884 5940594 5940530 1012019 5940527 7 5940584 5940565 1054134 1054136 5940528 5940567 5940564 1100100 1041758 5940814 5940858 5940880 1018007 1041721 1016041 5940856 5940854 1010014 1010012 1041756 1015004 1015002 1041748 1041764 1301014 1010014 5940836 N A 1041504 5940881 5940568 5940848 5940802 5940884 5940594 5940598 1012019 5940591 5940584 5940560 1054140 1054142 5940592 5940562 5940564 1100100 1041758 5940814 5940858 5940880 1018007 1041721 1016041 5940856 5940854 1010014 1010012 1041756 1015004 1015002 1041748 1041764 1301014 1010014 5940836 N A Appendix W A 04 Appendix INTERNAL SYSTEM WIRING DIAGRAMS LINE VOLTAGE Line Voltage Wiring Diagram Model 5120 240V OR 208V SYSTEMS ONLY Use copper or aluminum conductors rated for 75 C or higher for field connection of this device CORE BLOWER S BLACK HIGH EXCHANGER CONTROL CIRCUIT LIMITS ECH WHITE coy NEUTRAL LUG 2 o 7 SE ul OH m HE EH DI H AUTO 2225 1261 Oe RESET 2 x
20. AL SYSTEM PLUMBING SINGLE TEMPERATURE ZONES Secondary Loop FIGURE 15 White Primary Loop oO T T This Valve Must VVhite Be Open During Normal Operation y Loop Pump Comfort Plus Hydronic Primary Comfort Hydronic Exchanger Installation 3 12 E 2 amp T o It is the responsibility of the installer to prevent involuntary flow of water to the air handler Not doing so may cause limit tripping and or decrease heat pump efficiency Use of a check valve zone valve or other device may help prevent involuntary flow TYPICAL SYSTEM PLUMBING SHOWN WITH STEFFES AIR HANDLER FIGURE 16 Secondary Loop Primary Loop Low Temp Radiant Zones Mixing Valve 1 5100 Air 2 Handler To Other 1 White This Valve Must White r Zones Black Be Open During gt Primary Normal Operation Red Loop Pump High Temp VVater Comfort Hydronic Exchanger Cal AUXILIARY LOAD CONTROL The Comfort Plus Hydronic system can be used to provide control signals to other loads in the application To do so connect low voltage control wi
21. CK BLUE RED A ORANGE A BLACK BLACK YELLOVV 2 5 NN RED To Optional Static Heat R ry Syst ea m ys em RELAY 1 RELAY 2 RELAY 3 RELAY 4 75VA CORE 7 TRANSFORMER LIMIT COMI xo EN No COMI xo E2 no 240v N 24v o m 7 2 Icom 82 LIMIT LIMIT a 2 RELAY 9 RELAY 10 VVHITE BLACK A S A RED 2 a RELAY 11 RELAY 12 COM COM BLACK YELLOW NO NO HEATING ELEMENTS RELAY 5 RELAY 6 RELAY 7 RELAY 8 El 16 o D COM COM COM COM Element 14 8 ON ee S COM ICOM Element 13 8 RELAY 13 RELAY 14 Element 12 2 RED 5 Element 11 a RELAY 15 RELAY 16 e a Element 10 COMIC ICOM gt gg IDL e E A Ee Element 9 Element 8 4 Element 7 S Element 6 oA 4 Element 5 A Element K Element 2 D Elementi a 4 NOTE 1 Line Voltage Field Wiring Connections See Figure 8 for information on proper circuit phasing NOTE 2 For more information regarding pump circulator wiring reference Figures 9 15 and 16 in the Installation section of this manual Appendix ll A 07 Comfort Plus Hydronic INTERNAL SYSTEM WIRING DIAGRAM LOW VOLTAGE The outdoor temperature sensor room thermostat and peak control device are connected via low voltage wiring CO WARNING HAZARDOUS VOLTAGE Risk System Low Voltage Wiring Diagram The R and C positions in the low voltage terminal of electric shock Can cause strip may be used as a source o
22. Electrical mlet Panel Remove the painted front panel of the electrical compartment by removing the screws along the edges Locate the installation hardware package that is shipped in this compartment Carefully route the element wiring harnesses and connect them to the heating elements using the screws provided in the hardware package Connections should be made with the screw heads up and the threads pointing down Element screws should be tightened to 14 inch lbs Refer to Figure 5 for proper positioning BRICK CORE TEMPERATURE SENSOR INSTALLATION Step 1 Step 2 Step 3 Step 4 Step 5 Remove the screw s around the brick core temperature sensor hole s in the galvanized front panel C AUTI ON Models 5130 and 5140 have an upper and a lower brick Risk of improper opera core temperature sensor tion Proper installation of the brick core tempera Insert the brick core temperature sensor s through the hole s in the ture sensor s is critical to galvanized front panel If installing a system with two sensors be Ka Nee sure the one marked as the upper sensor is installed in the upper om yoo iti dth ked as the 1 is installed in th heating system Read and position and the one marked as the lower sensor is installed in the follow installation instruc lower position The sensor s must pass through the blanket insulation tions carefully and into the brick core Holes have not been pre d
23. HANDLER The Steffes air handler allows the 5100 series heating system to provide forced air heating or to be interfaced with other ducted heating and or cooling systems such as a heat pump or air conditioner When used with a heat pump it serves as the back up or supplement heat and provides comfort modulation It s duct sensor monitors outlet air temperature and modulates the off peak stored heat needed to maintain the desired output air temperature As the air handler is attached to the Comfort Plus system it also directs the heat lost statically through the outer panels into the ductwork for delivery to the living space automatic static heat recovery The Comfort Plus system s internal controls automatically regulate the air handler s operation Configurations Available 2 HP with 60 000 BTU hr water coil accommodates most 1 5 to 4 ton Order Iten 1302100 1 2 HP i Order Item 1302104 1 2 HP VS heating cooling systems Order Item 1302105 1 HP VS HP variable speed ECM blower with 60 000 BTU hr water coil accommodates most 1 5 to 4 ton heating cooling systems 1 HP variable speed ECM blower with 80 000 BTU hr water coil accommodates most 3 to 5 ton heating cooling systems Optional Accessories 2 01 Comfort Plus Hydronic STATIC HEAT RECOVERY UNIT During operation of the Comfort Plus Hydronic system some heat from the brick core storage will radiate through its outer panels
24. Static Heat Recovery System RELAY 1 RELAY 2 RELAY3 T RELAY 4 75VA E E E E TRANSFORMER Cl S i Cl xo IC xo IC 240 24 1 4 Amp LI NO Hod No leon COM COM L2 120 RELAY 7 RELAY 8 WHITE BLACK L2 240 RELAY 9 RELAY 10 EXPANSION COM COM BLACK YELLOVV BOARD 1 NO NO HEATING ELEMENTS RELAY 5 RELAY6 Element 12 co co F Col No No No NO Element 11 1 4 Amp MT LI Element 10 c A EE 0 Element 9 1 12 120 RELAY 11 RELAY 12 Element 8 A LRED 1 12240 Element 7 Element 6 EXPANSION BOARD 2 NO NO Element 5 Element 4 Element 3 Element 2 Element 1 Installation section of this manual Comfort Plus Hydronic Appendix W A 06 NOTE 1 Line Voltage Field Wiring Connections See Figure 8 for information on proper circuit phasing NOTE 2 For more information regarding pump circulator wiring reference Figures 9 15 and 16 in the Appendix Line Voltage Wiring Diagram Model 5140 240V OR 208V SYSTEMS ONLY Use copper or aluminum conductors rated for 75 C or higher for field connection of this device SEE NOTE 1 ge bs
25. Y STATEMENT Steffes Corporation Steffes warrants that the Steffes Electric Thermal Storage Heating Appliance is free from defects inmaterials and workmanship under normal useand service Steffes obligation under this Warranty is limited to the repair orreplacement of the appliance or parts only which prove to be defective under normal use within five 5 years of the date of installation and which Steffes examination of the returned appliance or part 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 associated 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 ifthe heating appliance is moved from the premises in which it was originally installed This Warranty shall not apply to an appliance or part which has been altered in any respect orimproperly installed serviced or used or has been subject to accident negligence abuse or misuse THE ABOVE WARRANTY BYSTEFFES IS EXCLUSIVE ANDIN LIEU OF ALL OTHER WARRAN TIES WHETHER WRITTEN OR ORAL EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OFMERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE The user assumes all risk and liability whatsoever resulting from the use of this heating appliance Inno event shall S
26. anel Detach by pulling the bottom of the panel forward and down Step 5 Locate the element wiring harnesses and brick core temperature sensor s behind the front panel and disconnect them from their shipping position Carefully position them to avoid damage during brick loading Models 5130 and 5140 have two brick core temperature sensors Step 6 Remove the galvanized front panel and set it aside Step 7 Carefully lift the two insulation blankets one at a time starting at the bottom and drape them over the top of the system Use face mask gloves and long sleeved garments when handling insulation materi als in compliance with generally accepted safety practices Step 8 Remove the front air channel by pulling out at the top E s T o E Step 9 Remove the heating elements from inside the brick core cavity Installation 3 03 Comfort Plus Hydronic BRICK LOADING BRICK LOADING Load the brick one row at a time using a left side right FIGURE 4 side center pattern Start at the back of the brick core and work forward Make sure the brick are placed so the grooved side is facing up the notch is facing forward and the ridges are on the left and right See Figure 4 BRICK INSTALLATION TIPS e Install bricks carefully to avoid damage to the insulation panels e Remove loose brick debris to prevent uneven stacking of brick as this can make installation of the elements and the brick core temperature
27. as not been used for an extended period of time dust may accumulate in the system Upon restart there may also be an odor as these dust particles are expelled During operation the system may produce minor expansion noises These noises are the result of the internal components reacting to the temperature changes TURNING SYSTEM OFF AND ON The Comfort Plus Hydronic element charging circuits may be turned OFF by svvitching all of the 60 AMP breakers located on the front of the electrical panel to the DOWN position To turn the element circuits ON svvitch the 60 AMP breakers to the UP position The 60 AMP breakers MUST all be turned ON or all turned OFF The 15 AMP breaker MUST remain ON to operate controls in the system if using the Comfort Plus Hydronic in conjunction with a heat pump or air conditioner using the Comfort Plus Hydronic to control other loads using the optional Steffes Time Clock Module using the Comfort Plus Hydronic to exercise the pumps during periods of inactivity Comfort Plus Hydronic Operation W 1 01 CONTROL PANEL Operation of the Comfort Plus Hydronic system is automatic All operational functions are stored in its micropro cessor in function locations and are factory preset If necessary the user or installer can adjust them through the control panel See Figure 1 Four Digit LED Display The four digit LED displays specific operating information During an editing pro
28. brick core HE x Heating Elements Active Indicates the total number of heating elements currently energized PC x Power Line Carrier Channel Indicates the channel on which the system 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 system 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 off peak periods CA_x A Peak Mode Operation Indicates the charge control method being utilized during anticipated peak periods C x Specialty Timer 1 Charge Mode Specialty Applications Only C2_x Specialty Timer 2 Charge Mode Specialty Applications Only ERROR CODES The Comfort Plus Hydronic system has an on board diagnostic system to monitor various operating conditions If operating conditions move outside the normal operating range an error code is displayed on the faceplate If there are multiple errors simultaneously only the highest priority error code appears Once corrected the next highest priority code will be displayed Error codes will be displayed on the faceplate as Er 1 e Er05 Error Code 01 02 03 Appendix A 09 Description The lower core Core A thermocouple te
29. cess the function locations and the values set in these locations are displayed E e u A for viewing and adjusting purposes AM and PM Indicator Lights l The AM and PM indicator lights are only utilized if the Steffes Time Clock Module is M being installed With this module installed the system displays time on AM PM a intervals and the corresponding light flashes The system can be configured to display military time in which case both the AM and PM lights illuminate CONTROL PANEL M Mode Edit Button FIGURE 1 Activates the editing menu for changing the operating information of the system CAUTION EE STEFFES c 2 G o o o Sup 0 D A B Editing operating information may e Down Arrow Suttons alter the performance and opera Used to scroll up and down when viewing or changing tion of the system operating functions Interface Port FOR SERVICE USE ONLY Allows technician external access for updating software and troubleshooting OPERATING STATUS The Comfort Plus Hydronic is set to display various operating information as described below Press and release the up arrow to view this data 1 Operating Mode and Outlet Water Temperature indicates current operating mode E e u followed by the outlet water temperature M C Off Peak Charge Time P On Peak Control Time A Anticipated Peak Time 1 Outdoor Temperature indicates current outdoor temperature D
30. et metal screws along the top bottom and sides of the panel Detach by pulling the bottom of the panel forward and down Step 2 Remove the limit zone cover by removing the screws holding it in place Step 3 Remove the screws around the perimeter of the limit zone and around the bottom of the left side right side and back upper panels Step 4 Remove the one or two screws in the center of the upper right side panel Step 5 From the back of the system lift and remove the painted panels See Figure A Step 6 Locate the brick core temperature sensor s behind the front panel and disconnect them from their shipping position Carefully lay the sensor s aside to avoid damaging them Step 7 Carefully rock the brick core Figure B to one side and lift top portion up and off the base Figure C Step 8 Move the Comfort Plus Hydronic heating system into the desired location reassemble and continue with the installation instructions in this manual _ Can be broken down into KOA individual panels 29 3 16 NS 5 22 42 5 16 FIGURE A gt 4140 5140 2 56 4130 5130 45 4120 5120 28 7 8 34 7 ge A si K s 4140 5140 54 3 4 4130 5130 PB 43 3 4 4120 5120 o 32 3 4 R WARNING 0 HEAVY OBJECT WARNING Do notremoye Can cause muscle strain or back iniury Use lifting aids to move 55 system into place Do NOT place object lt hands and or
31. f 24 VAC for powering injury or death All low voltage external low voltage devices 60 VA maximum wiring must be segregated from line voltage circuits in the system RED l UPPER CORE THERMOCOUPLE YELLOW 5130 5140 L LOWER CORE THERMOCOUPLE YELLOW 5120 5130 5140 YELLOW ORANGE BLUE BLUE BLUE RED BLUE RED GRAY WHITE PURPLE PURPLE WHITE L DISCHARGE WATER SENSOR Peak Control Connections 75 VA R C Y Y2 G I O O2 VYV H I1OS SC DS RP P TRANSFORMER l 11 14 DISCHARGE AIR SENSOR FOR OPTIONAL AIR HANDLER BLUE YELLOW Appendix Comfort Plus Hydronic Appendix W A 08 Appendix HELP MENU The Comfort Plus Hydronic system contains a HELP menu which may be accessed through the control panel To access the HELP menu press and release the M button until the faceplate displays HELP Scroll through this 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 system tL xx Target Level Indicates the percentage of brick core charge level the system is targeting During peak periods the value displays as tL_ CL xx Charge Level Indicates the percentage of heat storage currently in the
32. f Outdoor Reset Ss 30 Outdoor Temperature o g 5 m o a E o m 5 s C011 Maximum Outlet Water Temperature The value set indicates the maximum outlet water tempera ture to be targeted The targeted outlet water temperature is affected by the values in C001 and C002 For example if the value in C001 50 C002 10 C011 180 C012 140 then at an outdoor tem perature of 30 degrees the targeted outlet water temperature would be 160 degrees E o s T 0 C012 Minimum Outlet Water Temperature The value set indicates the minimum outlet water temperature to be targeted The targeted outlet water temperature is affected by the values CAUTION in C001 and C002 For example if the value in C001 50 Risk of high temperature C002 10 C011 180 C012 140 then at an outdoor tem water Can cause property perature of 30 degrees the targeted outlet water temperature damage Improper water would be 160 degrees temperature settings can result in damage to the floor covering Make sure the maximum and minimum water temperatures are appropri ate for the application C013 C021 Time Clock Module Configuration These configura tion settings are used to configure the peak control times when utilizing the optional Steffes Time Clock Module Refer to the installation and configuration instructions included with the module for more information Installation Ml 3 15 Comfo
33. fficient permanent memory Contact a qualified service technician Permanent memory change has been made Press the M button to accept This error message indicates a change has been made to the software program therefore it is important to verify that all location settings are correct for the application On board communication system is not fully operable Contact a qualified service techni cian Base I O control board is in test mode Check the jumper configuration Relay expansion board s are in test mode Check the jumper configuration Indicates the value in Location 13 L013 has been set to a value greater than the value in Location 12 L012 The system will not charge until the value in L013 is set lower than L012 Press and release the M button to clear the error If the error code reappears contact a qualified service technician Contact a qualified service technician Contact a qualified service technician Contact a qualified service technician Contact a qualified service technician Temperature of the brick core is below 40 degrees or the core sensing thermocouple may be open Appendix Core high limit switch may be open The system is configured for power line carrier control however is not receiving a valid power line carrier communication signal Appendix W A 10 DISASSEMBLING THE COMFORT PLUS HYDRONIC SYSTEM Step 1 Remove the painted front panel of the brick storage cabinet by removing the she
34. fort Plus Hydronic system is factory configured for low voltage peak control and is set to charge when the utility peak control switch closes Refer to the Configuration Menu Pages 3 14 3 15 for information on configuring the system for the application PEAK CONTROL TERMINAL LOW VOLTAGE HARD WIRED PEAK CONTROL CONNECTIONS FIGURE 10 To Dry Contact Peak Control Switch BETEL OI GN If using the low voltage peak control option the Comfort Plus Hydronic is direct wired to the power company s peak control switch Field connections from the peak control switch are made to the low voltage terminal block through a low voltage knockout located on the left side of the electrical panel E 2 S T E Step 1 Route a low voltage circuit from the power company s load control or peak signaling device to the six 6 position low voltage terminal block inside the electrical compartment of the Comfort Plus Hydronic system through one of its low voltage wire knockouts 6 Position Low Voltage Terminal Block Coding Step 2 Connect the field wiring to positions RP and P RP Peak Control Input Common on the six 6 position low voltage terminal block P Peak Control Input See Figure 10 AP Anticipated Peak Pre Peak Control Input COM Peak Control Output Common To use the Comfort Plus to control NC Peak Control Output Normally Closed other loads refer to Auxiliary Load NO Peak Co
35. hes from combustible material Front 36 inches for ease in servicing Left Side 36 inches for ease in servicing 5140 Front View 6855 5100 SERIES REQUIRED CLEARANCES E FIGURE 3 r s REQUIRED F 6 CLEARANCE m TOP VIEW FRONT VIEW 36 REQUIRED CLEARANCE 3 REQUIRED _ CLEARANCE 3 REQUIRED CLEARANCE 36 REQUIRED 36 REQUIRED CLEARANCE CLEARANCE Minimum clearance requirements do NOT account for space needed for making electrical con 2 nections If utilizing the Air Handler an additional 23 inches is required on the right hand side of the system Comfort Plus Hydronic Installation W 3 02 If the Comfort Plus Hydronic is installed in an area where radiant heat coming from the system is undesired or where room temperatures may reach 85 Fahrenheit or greater it is strongly recommended to install a Static Heat Recovery unit or Air Handler Refer to page 2 01 for information on these options In addition to the physical space requirements the weight of the Comfort Plus Hydronic must be taken into consid eration when selecting the installation surface A level concrete floor is the best installation surface but most well supported surfaces are acceptable If unsure of floor load capacity consult a building contractor or architect where combustible vapors may be present Consult local state and national codes and regula ti
36. ions If being used in the application Outdoor Sensor Optional Freeze Protection Room Sensor erminal Block 4 12 Position e If installing a mechanical thermostat or thermostat with anticipator a resistor kit is required Order Item 1190015 e Air conditioner control using the output control configuration Page 3 15 does NOT work work with the above application LOW VOLTAGE CONNECTIONS HYDRONIC HEATING SINGLE ZONE SYSTEM FIGURE 13 Hydronic Heat Thermostat Zone Valve End Switch or Pump Control W Outdoor Sensor E 2 Kei 5 T o Gu Oo Gu uo Ou Gu Oo Ou Ou o Ou Comfort Plus Hydronic 12 Position Terminal Block AIR CONDITIONER HEAT PUMP INTERFACE The Comfort Plus Hydronic system can be used in conjunction with an air conditioner or a heat pump Refer to the optional Air Handler Page 2 01 and the Low Voltage Connections for Heat Pump Application Diagram Figure 11 for more information on interfacing these systems with the Comfort Plus Hydronic If multiple heat pumps are being interfaced contact Steffes Corporation Comfort Plus Hydronic Installation Ml 3 10 PRESSURE RELIEF VALVE INSTALLATION Risk of explosion Can cause injury or death The factory supplied pressure relief valve MUST be connected to the system with the fittings DO NOT modify this assembly DO NOT cap plug or otherwise obstruct the outlet of the pressure relief valve DO mount
37. long with the clearances required Figure 3 MUST be taken into consideration when choosing its location within a structure The best installation location for this system is in a space requir ing heat so some amount of the heating requirements can be satisfied through static dissipation from the warm outer panels of the system Standby heat dissipation of up to 2 5kW can be experienced in normal operation The minimum area required for the installation of a Comfort Plus Hydronic is 100 square feet This area must remain free of debris and room air should be maintained at less than 85 Fahr enheit If the system is being installed in an area with less than 400 square feet ventilation MUST be provided If the area available to install the system is less than 100 square feet consult the factory 5100 SERIES DIMENSIONS D WARNING Risk of fire Can cause injury or death Violation of the clearance require ments or failure to provide proper ventilation can cause improper operation of the system Maintain the placement and clearance requirements as specified and provide ventilation as necessary Moving the system after install may result in equipment damage Do NOT move system from origi nal installed location FIGURE 2 MINIMUM CLEARANCE REQUIREMENTS 472 Back and Right Side 3 inches from combustible material 16 e Bottom 1 inch clearance l 6 inc
38. mperature is out of normal operating range This can be caused by an open shorted or otherwise defective thermocouple or a circuit board which is out of calibration The upper core Core B thermocouple temperature is out of normal operating range This can be caused by an open shorted or otherwise defective thermocouple or a circuit board which is out of calibration Outlet water temperature is out of normal operating range This can indicate an open sensor a short in the wiring or a circuit board which is out of calibration Discharge air temperature is out of normal operating range This can indicate an open sensor a short in the wiring or a circuit board which is out of calibration HAZARDOUS VOLTAGE Risk of electric shock Can cause injury or death System may be connected to more than one branch circuit Disconnect power to all circuits before servic ing Equipment must be serviced by a qualified technician Comfort Plus Hydronic Error Code 05 06 07 08 10 20 21 22 23 24 25 26 27 28 29 30 31 39 40 41 42 43 44 Cold Core Core Fail PLC Fail Comfort Plus Hydronic Description Outdoor sensor direct wired temperature reading is out of normal operating range The sensor circuit may be open or shorted the processor control board may be out of calibra tion or there may be an incorrect value in L035 Outdoor sensor temperature from the transmitting device
39. n on the various heat call status displays In applications utilizing the Air Handler verify that the Air Handler and or heat pump operates appropriately Step 6 If utilizing the Air Handler initiate a cooling call from the room thermostat and verify that the Comfort Plus Hydronic system recognizes the COOL call Verify that the Air Handler heat pump and or air conditioner operates appropriately Step 7 Press the up arrow until the targeted brick core charge level is displayed on the control panel With the system in an off peak charge mode initiate the charge L L b d control override Refer to the Charge Control Override section Page 1 03 for instructions on initiating the charge control override Once initiated the target level of the Comfort Plus Hydronic should be 100 percent the control panel should display tL F and all of the heating elements should be energized Step 8 With an amp meter verify that the amperage of the system is correct for the installation Refer to the System Identification Label on the Comfort Plus Hydronic system for information regarding the proper amperage E 2 ww s T o Step 9 Cancel the charge control override and verify that all elements in the system de energize Refer to the Charge Control Override section Page 1 03 for instructions on canceling the charge control override Step 10 Verify that all hydronic heating zones are operating as intended Step 11 Verify
40. nect to the air handler pump See Figure 9 The maximum connected amperage on either of these circuits is 1 2 amps Red amp White To Primary Loop Pump Max 1 2 AMPS Black amp White To Air Handler ia Pump Max 1 2 AMPS WHITE These wires are located in the lower left corner of the electrical compartment Step 3 Attach the junction box cover using the screws provided 2 If utilizing the optional air handler the orange wire can be used with the white wire to power a secondary pump for hydronic zones LOW VOLTAGE ELECTRICAL CONNECTIONS PEAK CONTROL Steffes ETS heating equipment may be controlled by the Power Company via a peak control signal This signal can be sent to the equipment using a Steffes IMPORTANT Power Line Carrier control system low voltage wiring a Steffes Time Clock Module or line voltage control In applications utilizing automatic charge Low voltage wires control outdoor temperature information is required and can be received via MUST never enter any an outdoor sensor or power line carrier control system line voltage enclosure The Com
41. ng automatic charge control as set in C000 this value indicates the outdoor temperature at which the system will target a full core charge E 2 5 T o 2 003 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 8 No Outdoor Sensor No Time Clock Module 9 Outdoor Sensor No Time Clock Module 12 No Outdoor Sensor Time Clock Module 13 Outdoor Sensor Time Clock Module C005 Control Switch Configuration If utilizing power line carrier control line voltage peak control or the Steffes Time Clock Module this value should be zero For all other applications this value should be one 1 Configuration Menu continued on next page Comfort Plus Hydronic Installation 3 14 C006 Output Control Configuration Configures the output controls of the Comfort Plus Hydronic system To determine the value check the options desired from the list below Then add the numbers from the Value column and enter the sum into this location If not used in conjunction with a heat pump or air conditioner the value in this location should be set to two 2 Value Option Selected 2 All Comfort Plus Hydronic Systems 5100 Series 8 Enables compressor control if there is a COOL call d
42. ntrol Output Normally Open Control Page 3 13 Installation H 3 07 Comfort Plus Hydronic POWER LINE CARRIER PLC PEAK CONTROL The Steffes Power Line Carrier PLC control system has the ability to communicate with the Comfort Plus Hydronic system 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 transmit ting device The switch signals peak control times to the transmitter the transmitter sends the signals to the Comfort Plus Hydronic system which receives this information and responds 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 The PLC control is optional and must be ordered separately If utilizing a PLC system an Owner s and Installer s manual will accompany the transmitting device Refer to this manual for information on the installation and operation of the power line carrier control system TIME CLOCK MODULE PEAK CONTROL The Steffes Time Clock Module is another option for providing a peak control signal to the Comfort Plus Hy dronic It mounts inside the system s low voltage electrical compartment and interfaces with the relay board via an interface cable Peak control times must be
43. om front panel screws and any field installed screws to avoid short circuit Required Clearance Between Element Termination and Metal Panels is 1 2 3 4 Nominal Comfort Plus Hydronic Installation 3 04 Installation E o D T 1 iz Step 2 Step 3 Step 4 Step 5 Step 6 Install the front air channel by placing AIR CHANNEL PLACEMENT the bottom in first vvith the air deflec FIGURE 6 tors arrovv shaped pieces facing invvard Refer to the Air Channel Placement Figure 6 and the Parts Diagram Page A 02 for proper placement and installation of the front air channel Front Air Lower the insulation blankets back into BRICK J Channel position one at a time Carefully tuck CORE ie Ge SIDE VIEW the sides of this insulation into the edges corners and around the exposed portions of the heating element to ensure maximum efficiency Reinstall the galvanized front panel by sliding the bottom of the panel inside the lower lip of the brick cavity and resting the top of the panel on the outside of the brick cavity Secure it to the Comfort Plus Hydronic system using the screws that were originally removed IS Outlet
44. once again that the Operating Mode displayed on the control panel corresponds with the power company s peak control signal Step 12 In applications utilizing the Steffes Power Line Carrier control system complete the Installer s Final Check out Procedure in the Owner s and Installer s Manual provided with that device Comfort Plus Hydronic Installation 3 16 IX KG Q o o 4 SPECIFICATIONS 8 OF 8122 WINUWTXPU gD 01 sr myev dul 4 07 ye yndno NLA 000701 T d WAD 5Bs 81 H0S EU l s9ox rxe z LS X COP X 67 oy X SOP X 67 088 818 097719 OO OCT OVC O8T STI Joyonpuod fenn N A8OT AOTI 10 2 2 ST Aq q fILA W3 S S au JO INAUI Zut TE IY T A A ON SUOHB AINSIFUOD 6 DI A80Z 0 Iq UBD SIDD JUIUII I fer ds se qeuondo A Z pUe A 0Z DIEDUEIS AQPC sn S XO jo Joquiny IOL Joug HEH YU AJ M youg jo Joquiny sq 143190 M P TE3SU oayewrxorddy doof AreurL d MOT uru DISd mss zq FUJIO AA WNWIXEN au u n y g 197 M PMO 198 M 3 pno JOPNO IMANU 1918 AA ZIS diq sogur ul H X X M suorsuowq Wasg NLE Ayede a8ei0is FLY A S OMUOD r 384AS pue SIOMOTY SENOA PUUA sur SAS AQPZ
45. ons to ensure proper installation An 18 stand Order Item 1301585 is available to elevate the system Special requirements need to be considered if placing the system in a garage or other area INITIAL SET UP Step 1 Remove the Information Package from the outside of the shipping box and unpackage the Comfort Plus IMPORTANT Hydronic heating system To ensure proper operation read and Step 2 Move the heating system into its installation location follow installation instructions carefully The Comfort Plus Hydronic is capable of fitting through DO NOT install the Comfort Plus Hydronic system on its shipping pallet DO NOT extend the leveling legs a 30 doorway minimum without disassembling Ifit is necessary to disassemble the system refer to the disassembly instructions Page A 11 in this manual more thanronminch Step 3 Once in place adjust the leveling legs on the bottom of DO use and follow generally the system as necessary to prevent rocking If not accepted safety practices when placed properly the system may bend or twist during the handling insulation material brick loading process making element and brick core DO have equipment installed by a temperature sensor installation difficult qualified technician in compliance with all applicable codes and Step 4 Remove the painted front panel of the brick storage regulations cabinet by removing the sheet metal screvvs along the top bottom and sides of the p
46. outdoor temperature and the heating requirements E 2 5 T o Location of The outdoor sensor must be placed in a location where it can accurately sense outdoor tempera ture and is not affected by direct sunlight or other abnormal temperature conditions Comfort Plus Hydronic Installation H 3 08 Wiring Route low voltage wire from the outdoor sensor to the electrical compartment IMPORTANT through one of the low voltage wire knockouts Outdoor sensor wire MUST NEVER be e Connect to OS and SC as shown in combined with other control wiring ina Figure 11 13 multi conductor cable the sensor wiring is routed through an external wall the opening through which the wire is routed MUST be sealed Failure to do so may affect the accuracy of the outdoor temperature sensor e The outdoor sensor is supplied with a lead length of 40 ft If a greater wire length is needed it can be extended to a total of 250 ft No other loads can be controlled or supplied through this cable It is for connection of the outdoor sensor ONLY e This low voltage cable MUST not enter any line voltage enclosure e Unshielded Class II thermostat wire can be used as extension wire provided it is segre gated from any line voltage cabling LOW VOLTAGE ELECTRICAL CONNECTIONS ROOM THERMOSTAT A low voltage 24V AC room thermostat is required for room temperature control with the Comfort Plus Hy dronic system Steffes recommends u
47. personal injury Use caution when installing and or servicing equipment SHIPPING AND PACKAGING The Comfort Plus Hydronic should always be transported in an upright position to avoid damage to internal components and insulation materials The information below describes the items shipped with each system INFORMATION PACKAGE 2 HEATING ELEMENTS includes Owner s Manual and Warranty Registration Card shipped inside the brick core Refer to Pages 3 04 3 05 adhered to outer side of shipping box 3 SCREW KIT a OUTDOOR 6 JUNCTION BOX TEMPERATURE SENSOR Refer to Pages 3 08 3 09 E m bi shipped behind the 1 P e 1 shipped inside the electrical exchanger access panel V y U 7U7 tment See Figure 9 Page 3 07 RB Refer to Pages 3 04 3 05 PANDE CRAN 8 8 o E CERAMIC BRICK D PRESSURE RELIEF VALVE KIT i e Full Brick R shipped separately and packaged 4 brick D l per box Half Brick shipped with brick and packaged in a white box shipped behind the exchanger consisting of 6 half brick access panel and I full brick Refer to Page 3 11 Model Full Brick Brick Half Brick 5120 26 Boxes 1 Box 5130 37 Boxes 2 Boxes 5140 49 Boxes 2 Boxes See Figure 4 Page 3 04 Installation H 3 01 Comfort Plus Hydronic PLACEMENT AND CLEARANCE REQUIREMENTS The physical dimensions Figure 2 of the Comfort Plus Hydronic a
48. programmed into the system once the module is installed to enable the time clock feature Refer to the instructions provided with the Time Clock Module for more informa tion on the installation and operation of this device LINE VOLTAGE PEAK CONTROL Line voltage control is also an option but is not the preferred method of control as it is usually more complex and expensive If line voltage control is utilized the controls circuit 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 system MUST continuously display a brick core operating mode of C charge regardless of whether it is an off peak or on peak period Refer to C005 of the Configuration Menu for proper settings Reference Pages 3 14 3 15 LOW VOLTAGE ELECTRICAL CONNECTIONS OUTDOOR TEMPERATURE SENSOR REQUIRED Installation Methods A Hard wired to system to the OS and SC terminals default IMPORTANT OR B Connected to Power Line Carrier If connecting to the Steffes power line PLC carrier PLC system follow the instal lation instructions in the PLC system s Theory of Operation The outdoor sensor monitors outdoor Owner s and Installer s Guide temperature and provides this infor mation to the system The system responds by automatically storing heat in its brick core according to
49. pump connections MUST also be made in the junction box The 60 amp breakers located in the electrical compartment on the Comfort Plus Hydronic feed the core charging element circuits The 15 amp breaker feeds the controls blowers and pumps circuit All Comfort Plus Hydronic Equipment must be installed by a qualified systems are factory configured to be field technician in compliance with all applicable local connected to multiple line voltage circuits Ifa state and national codes and regulations single feed line voltage circuit is desired an optional single feed kit is available from the SAMPLE SYSTEM IDENTIFICATION LABEL FIGURE 7 To determine the correct wire size required for unu S each circuit feeding the Comfort Plus Hydronic ep TEFFES LISTED 7759 refer to the Specifications Page A 01 and the Model 5140 SIN _ 20802543870567SHH U S Patents ve 7 m e Maxi Working Pressure 20 psic Option 140 Canadian Patents system s identification label Figure 7 located on 75 Discharge Water Temperatur F SEENEN the lower left side of the Comfort Plus Hydronic Connections Required for Multi Circuit Feed Primary Pumpl 1 2 Amps 0 1 HP 1120 Volts Control Circuit Secondary PumpL1 2 Amps 0 1 HP 120 Volts system 207 ue 2 Amps L80 _3__ Wire Core Blower 1 2 Amps 0 25 HP 240 volts
50. r higher for field connection of this device SEE NOTE 1 1 NS 5 X ra CORE BLOWER EE 7 GROUND BAR BLACK HIGH ER ZL u LIMITS r ines El CONTROL CIRCUIT L COM NEUTRAL LUG CH CL oc Se Se Se Se i e m AUTO OnE RESET 2 Q O d Q Red amp White To D D D 2 Primary Loop Pump O S OI Max 1 2 AMPS BASE IO BOARD il Black 6 VVhite x S e S D To Air Handler Pump 5 7 5 oi Ha Amp TOW HIGH S S S Max 1 2 AMPS 1 SS com com SEE NOTE 2 g L2 120 No s Bu lr L2 240 T WHITE S 1 BLower ES a com FANON HEAT CALL ORANGE RELAY RELAY RESISTOR To Optional Air Handler SE BLUE WHITE E i BLUE BLACK 1 BLUE RED ORANGE BLACK 1 BLACK YELLOW RED To Optional
51. rator _ Expansion a Tank SE Primary Connection 5 Area un Pressure 1 Relief Valve NN Factory Supplied CH U i d uz 2 Optional Temperature and Outlet 9 Pressure Relief Valve Consult Local Code PUMP SPECIFICATIONS Inlet J unction Box Factory Supplied PRESSURE DROP THROUGH HEAT EXCHANGER STATIC PRESSURE Feet Water Column 1 ft 2 GPM 2 ft 4 GPM 4 ft 6 GPM 7 ft 8 GPM 1 1 ft 10 GPM Based on 80 degree entry water temperature with a 50 glycol mix TYPICAL FLOOR ZONE DESIGN Maximum Length of Pipe per Pipe Size 3 8 200 1 2 300 5 8 500 Pipe length will vary by manufacturer e Steffes recommends a Grundfos UP15 42F single speed 115V AC pump for the primary pump e Air Handler pump should NOT be a split phase pump e Air Handler pump should NOT have any type of auxiliary control built into or onto the pump FREEZE PROTECTION Risk of frozen pipes Can cause property damage Hydronic heating system freeze ups WILL cause extensive damage to the entire heating system and or property It is the re sponsibility of the installer to provide protection against freezing PIPING SUPPORT Risk of exchanger damage Can cause property damage or personal injury DO NOT use the exchanger as support for piping Support brackets should be in place to ensure proper operation of the system and to keep pressure off the inlet and outlet piping TYPIC
52. res to the COM and NC or the COM and NO positions of the six 6 S position low voltage terminal block in the electrical compartment of the Comfort Plus Hydronic See Figure 17 These contacts are rated for 30 volts 3 amps maximum ww If control of external line voltage devices is TYPICAL AUXILIARY LOAD CONTROL 7 desired contact the factory and order the Auxil FIGURE 17 iary Control Relay Order Item 1302010 or the E Sazan Coan Reng Auxiliary Control Relay with Override Order a Item 1302012 e m Maximum external load should P AP COM NC NO not exceed 60 VA on the system s class Il transformer Internal Peak Control Output Relay NOTE During off peak charge periods the contact is closed between COM and NC Installation 3 13 Comfort Plus Hydronic CONFIGURATION MENU The Steffes Comfort Plus Hydronic heating system has a Configuration Menu which allows the system to be customized to the power company and consumer s IMPORTANT needs This menu can be accessed on start up and allows configuration settings to be easily adjusted If access to the Con figuration Menu times To access the Configuration Menu out the 15 amp circuit breaker must be pow ered off and back on to re enter the menu Step 1 Energize the system Access to the Configuration Menu is allowed for the first two 2 minutes of operation If
53. rilled through the insulation Use the sensor s to aid in making a passageway by rotating the sensor s side to side while gently pushing inward Once the brick core sensor s is installed put the screw s back into position in the galvanized front panel to hold the sensor s in position and to provide the electrical ground Check the non insulated element terminations to make sure they do not come within 1 2 of any surface area on the system Re install the painted front panel using the previously removed screws Installation H 3 05 Comfort Plus Hydronic LINE VOLTAGE ELECTRICAL CONNECTIONS In standard configuration the Comfort Plus Hydronic is wired for connection to 240V however the element circuits can also be connected to 208V A 208V connection derates HAZARDOUS VOLTAGE Risk of electric shock Can the charging input of the system by 25 Ifa cause injury or death system rated specifically for 208V or 277V is required contact the factory The controls DO NOT energize the system until installation is circuit in the Comfort Plus Hydronic system complete MUST be connected to 120V 240V or 120V DO NOT operate the Comfort Plus Hydronic 208V If connecting to 120 208V contact the heating system without the factory supplied factory for programming information junction box in place Connections to the primary loop pump MUST be made inside the junction box If installing the optional air handler the air handler
54. rocess of changing or viewing the values in a microprocessor location This is accom plished with the use of the mode button the up arrow button and the down arrow button Expansion Tank When water is heated expan sion takes place The expansion tank stores the excess water to maintain proper pressure in the system In most applications the expansion tank should be installed prior to the pump for optimum performance Location Function Where the specific operat ing information of the system is stored These locations are part of the microprocessor and are accessed through the control panel Displayed as an L on the faceplate when in the edit mode Comfort Plus Hydronic Location Value The specific information set and stored in a location on the system s microprocessor which defines system operation A value for a spe cific location is accessed through the control panel Manual Charge Control Method of brick core charge regulation where the owner must periodically adjust the brick core temperature setting in relation to the outdoor temperature Microprocessor Device on the circuit board of the system which stores and processes the information for controlling the operation of the system Off peak The time during the day or night when the power company can supply electricity more economically and may offer a special incentive such as a reduced electric rate or billing credits for the elec tricity consumed during
55. rt Plus Hydronic INSTALLER S FINAL CHECK OUT PROCEDURE Risk of electric shock control panel corresponds with the power death System may be Operating Status section Page 1 02 for more information on the circuits before servicing outdoor temperature information displayed on display Can cause injury or company s peak control signal Refer to the connected to more than proper operating mode Equipment must be the control panel is approximately the same as Step 4 Press the up arrow again and the current heat call status will be displayed on the H L i il Step 1 Verify that the water pressure is correct for the application The Lv WARNING water pressure of the Comfort Plus Hydronic heating system should be between 12 and 20 psig one branch circuit serviced by a qualified the current outdoor temperature Refer to the Operating Status control panel Refer to the Operating Status section Page 1 02 for more infor HAZARDOUS VOLTAGE Step 2 Verify that the operating mode displayed on the 1 Disconnect power to all Step 3 Press the up arrow one time and verify that the technician section Page 1 02 for more information on the outdoor temperature mation on the heat call status display Step 5 Initiate a heat call from the room thermostat and verify that the Comfort Plus Hydronic system recognizes the appropriate heat call Refer to the Operating Status section Page 1 02 for informa tio
56. s SINGLE ELECTRICAL FEED KIT The Steffes Comfort Plus systems have built in circuit breakers They are factory configured to be field connected to multiple line voltage circuits If single feed to the element and blowers control circuits is desired the single feed kit is available to allow the system to be powered with a one larger line voltage circuit Contact the factory for ordering details berg When using single feed the neutral conductor MUST be sized in accordance with all applicable local state and national codes and regulations PRIMARY LOOP KIT The Comfort Plus Hydronic system requires a primary water loop which serves to regulate heat transfer from the unit s heat exchanger To minimize installation time and costs for field design and engineering of this loop Steffes Corporation offers a primary loop kit The kit contains the components generally installed with hydronic heat systems Features Includes a 5 gallon diaphragm type expansion tank Grundfos brand pump circulator air separator air vent pressure gauge and pump connection conduit and fittings Contains the appropriate valves to bleed air from the system during filling along with automatic purge during system operation and draining Incorporates isolation flanges for quick and easy servicing of the primary loop pump circulator Offers troubleshooting isolation between the heating system and secondary Order Item 1302115 zones AIR
57. sensor s Notch in Brick difficult e Brick rows MUST line up front to back and side to HALF BRICK side 5120 Load in row 5 5130 Load in row 4 and 8 e Half brick makes brick loading easier by evening 5140 Load in row 6 and 12 out the stacks Use HALF BRICK white boxes in the proper rows and positions as indicated in Figure 4 The back half of the brick MUST be installed in the back row and the front half the notched brick piece MUST be installed in the front row Risk of fire Can cause personal injury or death DO NOT operate the Comfort AAN WARNING Plus Hydronic system if damage to the insulation panels on the inner sides of the brick core occurs HEATING ELEMENT AND AIR CHANNEL INSTALLATION Step 1 After all brick are loaded insert the heating elements between the brick layers sliding them in until the element ends embed into the side cutouts of the brick cavity Elements MUST be installed with the threaded screw tabs on the wire connection terminals pointing forward and down to ease the installation of the element to wiring harness Note the required clearance Figure 5 AN WARNING FIGURE 5 of electric shock Can cause injury or death DO NOT remove the electri TOP VIEW cal panel cover while system is energized Position elements properly a to avoid short circuiting them against metal sur faces Protect element lead wires fr
58. sing a digital thermostat If utilizing a mechanical thermostat a load resistor may be necessary due to the low current draw 01 amps on the heat call input circuit of the Comfort Plus system Contact the factory for information on thermostats available from Steffes Low voltage wires MUST never enter IMPORTANT any line voltage enclosure Comfort Plus Hydronic 12 Position Low Voltage Terminal Block Codin R Low Voltage Hot Y2 Compressor Output H Hydronic Heat C Low Voltage Common G FanCall OS Outdoor Temperature Sensor 5 Y Compressor Stage 1 Heat Call O Reversing Valve Input SC Temperature Sensor Common W Stage 2 Heat Call 2 Reversing Valve Output DS Duct Temperature Sensor P LOW VOLTAGE CONNECTIONS 2 HEAT PUMP APPLICATION a FIGURE 11 Thermostat Zone Honeywell TH5220D Honeywell TH5220D To Heat Pump Y Compressor l bd C Lovv Voltage Common R Lovv Voltage Hot Reversing Valve o R EAuxGO BC Y R Outdoor Sensor Optional Freeze Protection Room Sensor OG 12 Position Terminal Block Installation W 3 09 Comfort Plus Hydronic LOW VOLTAGE CONNECTIONS CONVENTIONAL FURNACE APPLICATION SHOWN WITH UNCONTROLLED AIR CONDITIONING SYSTEM FIGURE 12 Hydronic Heat Thermostat Zone ee Valve End Switch or Pump Control R W Honeywell TH5110D Y Air Conditioner Connect
59. supported and securely charge large amounts of steam and or ri anchored to avoid applied stress on the hot vvater To reduce the potential for E valve bodily injury or property damage e be as short and straight as possible install a discharge line e terminate freely to atmosphere where any discharge is clearly visible and is at no risk of freezing e terminate with a plain end that is not threaded e be constructed of a material suitable for exposure to temperatures of 375 F or greater e be over its entire length of a pipe size equal to or greater than that of the valve outlet PLUMBING The Comfort Plus Hydronic heating system MUST be plumbed with a primary loop and secondary zone loops The primary loop needs to consist of a minimum of 10 of 1 pipe and requires its own pump circulator The secondary zone loops require additional pump s to operate effectively Refer to Typical Primary Loop Figure 14 and the Typical System Plumbing Diagrams Figures 15 and 16 for installation information The primary loop serves to regulate heat transfer from the system s heat exchanger and must be powered by Comfort Plus Hydronic control system as shown in Figure 14 Installation H 3 11 Comfort Plus Hydronic TYPICAL PRIMARY LOOP Primary Loop Pump Control Wiring White amp Red FIGURE 14 Piping MUST D Be Supported ir Sepa
60. teffes be liable for any indirect special or consequential damages or lost profits This Limited Warranty contains the complete and exclusive statementof Steffes obligations with respect totheheating appliance and any parts thereof The provisions hereofmay not be modified in any respect exceptin writing and signed by aduly authorized officer of Steffes Thank you for purchasing Steffes ETS heating equipment We welcome your comments relating to the Comfort Plus and this manual Enjoy your new purchase E 5 TEF F E S 3050 Hwy 22 North Dickinson ND 58601 9413 www steffes com CORPORATION DOCUMENT 1200059
61. this time Typically electrical usage is not controlled during an off peak time The system will provide heat to satisfy comfort require ments during this time as well as charge or store heat in its brick core On peak The time during the day or night when the power company experiences a high demand for electricity To limit demand certain appliances are controlled to avoid usage by them and or a premium for the electricity consumed during this time may be charged to discourage electrical usage The system is not allowed to charge or store heat in its brick core during on peak periods Outdoor Sensor Device that senses outdoor air temperature and communicates this information to the system for automatic charge control Pressure Relief Valve Device that protects the system against the dangers of thermal expansion If system pressure exceeds normal operating conditions the relief valve opens and releases excessive pressure from the system Room Temperature Set Point The targeted room temperature the system is to maintain If the thermostat s senses a temperature below this point a heat call is initiated Appendix Appendix Mf A 12 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 WARRANT
62. ts must be segre gated from low voltage wiring in the o mfort Plus Hydronic NEUTRALS E EE EE Camion Plus Hydronic 28 12 NOTE The controls CIRCUIT PHASING CONNECTIONS FIGURE 8 NEUTRAL CONNECTION FOR CONTROL CIRCUIT E val KL T val o E CHARGE CIRCUIT 4 MODEL 5130 and 5140 ONLY To Service Breaker Panel To reduce electro magnetic fields associated with electrical circuits and to avoid induced voltage on sensors circuit MUST 4 include a n neutral vvire s o Ells Te e o and electronic devices the circuit phases MUST be alternated as shovvn in Figure 8 a Sila ee Sila Silas Comfort Plus Hydronic Circuit Breakers Comfort Plus Hydronic Installation 3 06 JUNCTION BOX INSTALLATION Step 1 Attach the factory supplied junction box to the left side of the Comfort Plus Hydronic system as shown in Figure 14 Page 3 12 LINE VOLTAGE WIRING DIAGRAM Step 2 Make connections to the FIGURE 9 5120 Line Voltage primary loop pump and Nee 75 C or higher for field connections of this device air handler pump inside this junction box The red and white wires connect to the primary loop pump and the black and white wires con
63. umber Comfort Plus Hydronic DESCRIPTION Limit Harness Bottom Left Side Front Base Panel Bottom Panel Base Top Panel Back Bottom Base Painted Panel Left Side Bottom Painted Panel Left Side Back Painted Panel Core Limit Switch 290D Limit Zone Painted Cover Left Side Top Painted Panel Left Side Core Panel Insulation Blanket Inner Insulation Blanket Outer Back Painted Panel Galvanized Core Panel Back Galvanized Core Panel Top Exchanger Limit Switch 250D Manual Reset upper Exchanger Access Tube Cover Exchanger Access Painted Panel Core Blower Capacitor Low Voltage Panel Assembly Terminal Block 6 Position Electrical Panel Main Body Electrical Panel Bottom Cable Control Board Interface 18 Cable Expansion Board Interface 12 Limit Switch 225D Auto lower Junction Box for Pump Connections Junction Box Cover Outlet Water Sensor Resistor 1200 ohm Time Clock Module Optional Cable Time Clock Module Interface 18 Left Side Exchanger Panel Outer Filler Painted Electrical Panel Cover 5120 ITEMNO 1041504 5940881 5940568 5940848 5940802 5940884 5940594 5940599 1012019 5940585 0 5940584 5940561 1054130 1054132 5940593 5940563 _ 5940564 1100100 1041758 5940814 5940858 5940880 1018007 1041721 1016041 5940856 5940854 1010014 1010012 1041756 1015004 1015002 1041748 1041764 1301014 1010014 5940836 5940846 5130 ITEMNO 1041504 5940881 5940568 594
64. uring a peak control time 32 If it is a peak control period and the Comfort Plus Hydronic receives a cooling call the compressor will turn off and on in 20 minute intervals off 20 minutes on 20 minutes off 20 minutes etc 128 Interfaces Comfort Plus Hydronic with a heat pump that has a reversing valve which is energized for heating C007 Charge Factor This configuration should be set to a value of 30 C008 through C010 configurations are only applicable if the Comfort Plus Hydronic system is being used in conjuncion with a heat pump C008 Heat Pump Compressor Outdoor Lock Out Temperature for Off Peak or Anticipated Peak Modes Indicates the outdoor temperature at which the heat pump s compressor is locked out and not allowed to operate during an off peak or anticipated peak period C009 Heat Pump Compressor Outdoor Lock Out Temperature for On Peak Mode Indicates the outdoor temperature at which the heat pump s compressor is locked out and not allowed to operate during an on peak period C010 Minimum Discharge Air Temperature Sets the minimum discharge air temperature the system targets during a Stage 1 heat call C011 and C012 configurations must be set for the hottest temperature zone in the installation C011 is the highest tempera ture the system will target and C012 is the lowest temperature the system will target during a heat call Outdoor reset is done using these two temperatures See graph Example o
65. verride Feature Step 1 Press and hold the M the up arrow and the down arrow buttons at the same time Step 2 The faceplate will flash FULL and ON Continue to hold the three buttons until ON displays continuously on the faceplate Step 3 Release the buttons The override is now enabled The faceplate will return to displaying its standard operating mode Manual Cancellation of the Override Feature Step 1 Press and hold the M the up arrow and the down arrow buttons at the same time Step 2 The faceplate will flash FULL and OFF Continue to hold the three buttons until OFF displays continuously on the faceplate Step 3 Release the buttons The override is now cancelled The faceplate will return to displaying its standard operating mode MAINTENANCE AND CLEANING General cleaning of the systems cabinet should be conducted at the user s discretion It is important to monitor water levels pressure PSI as low water levels cause poor performance and possible damage to the system Ask the installer of the equipment for information on how to measure these levels If utilizing a heat pump or air conditioner with the Comfort Plus Hydronic the indoor coil of these devices should be cleaned periodically to maintain system efficiency Follow the manufacturer s cleaning recommendation for these devices Comfort Plus Hydronic Operation W 1 03 c 2 CG o 2 o Accessories Optional Accessorie
66. witch opens contact a qualified service techni cian Outlet Water This linear limit switch monitors the temperature of the Inside base on left side Temperature Limit water in the exchanger and interrupts power to the core Switch Auto Reset blower if a water temperature of 225 F is exceeded If the water pressure exceeds 30 psig the pressure relief Factory provided valve opens Once water pressure of less than 30 psig is field installed to outlet achieved the valve closes port of furnace Pressure Relief Valve Comfort Plus Hydronic Safety Information Table of Contents Operation General Operatiounen EENS an eng Ae Aa A eit arene 1 01 System Use During Construction Phase 1 01 SYSLEM En GE 1 01 Turning System OPP and ON cis use EES EEEE E aa 1 01 Control Panel ease Zug gece 0000000 000000 0000 sae 0000 1 02 Operating Status eneen EENS 1 02 Room Temperature Control D csbeisdesoesasvess ERE E SE o STEE IEEE sp ER PIET EEEE Eiks 1 03 BiickCore Charge Controlere niese see a e e tit E EEE EE A Lion oa ete eae EES EE 1 03 Charge Control Overrides s d nea EE E EE E sous EEE EET EEEO E ES EEKE ES EE EEr EES 1 03 Maintenance and Cleammg uoni ienee mesier oaos aea er Eo A cobs oa SE oE eo ESERE Soa ASEE 1 03 Optional Accessories Single Electrical Feed Kit l ea BAD Ee

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