Slant/Fin CHS-85 Installation And Operating Instructions Manual

Chs series high efficiency fire tube condensing gas boiler

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Page 1: Table Of Contents
Warranty is Void. Failure to properly install thisunit may re- 15.0 TROUBLESHOOTING ........62 sult in property damage, serious injury to occupants, or possibly death. 16.0 PARTS LIST ..........85 Heating Contractor Boiler Model Number Address Boiler Serial Number Phone Number Installation Date ©Slant/Fin Corp. 2013 • 613 • PUBLICATION CHS-40...
Page 2 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Read Before Proceeding If you do not follow these instructions exactly, a fire or explosion may result causing property damage, serious injury or death. FOR YOUR SAFETY, READ BEFORE OPERATING_ A) This boiler does not have a pilot.
Page 3: Introduction
1.0 INTRODUCTION General Installation Requirements The installation of your Slant/Fin CHS gas boiler must conform to the requirements of this manual, your local authority, and the National Fuel Gas Code ANSI Z223.1 and or CAN/CGA B149 Installation Codes. Where required by the Authority, the installation must conform to the standard for “Controls and Safety Devices for Automatically Fired Boilers ANSI/ASME CSD-1.
Page 4 LP gas be provided with an approved means of removing unburned gases from the room. Check your local codes for this requirement. Natural to LP Propane Conversion Kit Model Number Kit Number LP Orifice CHS-85 81 8124 000 415 (4.15mm) CHS-110 81 8124 000 52 (5.2mm)
Page 5 Slant Fin Corp. Installation and Operation Instructions │ CHS Series …..Continued. (b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4: The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of NFPA 54 as adopted by the Board;...
Page 6: Specifications
Thermal Efficiency (AFUE is not applicable). The CHS requires a special venting system, use only vent materials and methods detailed in these instructions. When operating with Propane models CHS-85 and CHS-110 have min/max Input Modulation rates of 17.6/88 and 22.6/113 MBH respectfully.
Page 7 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 2-1 CHS-85-110 Dimensions & Specifications Figure 2-2 CHS-155-250 Dimensions & Specifications Figure 2-3 CHS-300-399 Dimensions & Specifications...
Page 8: Boiler Location
Slant Fin Corp. │ Installation and Operation Instructions CHS Series 3.0 BOILER LOCATION In all cases, the CHS boiler must be installed indoors in a dry location where the ambient temperature must be maintained above freezing and below 100F [38C]. All boiler components must be protected from dripping, spraying water, or rain during operation and servicing.
Page 9 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 3-1 Closet Installation, Minimum Clearances (Model CHS 85-110 Shown) Min. 1” clearance for hot water and vent pipes Top ventilation opening Max. 6” below ceiling / top Ventilation air opening Top = 12”...
Page 10 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 3-2 Wall Mounting Instructions  Failure to follow instructions may While leaving the Upper bracket (A) intact, result in fire, serious injury, or death. remove the Wall-mount bracket (B) attached to the bottom-back of the appliance.
Page 11: General Venting
Slant Fin Corp. Installation and Operation Instructions │ CHS Series 4.0 GENERAL VENTING The CHS boiler is certified as a “Category IV” boiler requiring a “Special Venting System” designed for pressurized venting. The Exhaust Vent must be piped to the outdoors, using the vent materials and rules outlined in this section.
Page 12 Slant Fin Corp. │ Installation and Operation Instructions CHS Series and 6 in. from the front of the appliance. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors (see Figure 4-1e) and shall have a minimum free area of the following: a.
Page 13 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Combustion Air-inlet Contamination Be careful not to locate the air-inlet termination in an area where contaminants can be drawn in and used for combustion. Combustion air containing dust, debris or air-borne contaminants will drastically increase the required maintenance and may cause a corrosive reaction in the Heat Exchanger which could result in premature failure, fire, serious injury, or death.
Page 14 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 4-2(a) CHS 85-110 & 300-399 Figure 4-2(b) CHS 85-110 & 300-399 Near Boiler Venting (CPVC) Near Boiler Venting (PVC) Swing Joint to attain slope in Air-inlet Air-inlet horizontal runs Pipe * Pipe * Air Inlet...
Page 15 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 4-2(e) CHS 85-110 & 300-399 Figure 4-2(f) CHS 85-110 & 300-399 Near Boiler Venting (Stainless Steel) Near Boiler Venting (Polypropylene) PPS Elbow w/ offset angle to SS Air-inlet Pipe PPS Air-inlet Pipe* account for slope Swing Joint...
Page 16 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 4-2 CPVC Vent Pipe Transition Piece (used when venting with PVC) Model No. Vent Pipe Size CPVC Transition Vent Pipe Length Full Insertion Depth CHS 85-110 3” Minimum 5” [127 mm] 2-7/8”...
Page 17 11’ for 2” and 3” venting respectfully. Table 4-5 Allowable Vent and Air-inlet Pipe Size and Lengths Pipe Length Number of Elbows (90’s or 45’s) and Equivalent Feet Model No. Size (ft) CHS 85-110 CHS-85 2” CHS-110 CHS 85-110 3” CHS 155-250 NG/LP 4” CHS 300-399 Note: See WARNING below.
Page 18 Optional Termination Kits – Direct Vent Installation Kits certified with the CHS boiler are listed in Table 4-6 and available from IPEX, DuraVent and/or Slant/Fin. For more information on System 636 Vent Kits or wholesaler locations contact IPEX directly USA: 1-800-463- 9572 or www.IPEXamerica.com...
Page 19 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Sidewall Venting Options – Direct Vent Installation Figure 4-3(a) Figure 4-3(b) Two-pipe Termination (Sidewall) IPEX Low Profile Termination (Sidewall) Location of exhaust and air-inlet Location of exhaust and air-inlet connections vary between connections vary between models, see Figure 4-2.
Page 20 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Roof Venting Options – Direct Vent Installation Figure 4-4(a) Figure 4-4(b) Two-pipe Termination (Roof) IPEX Concentric Termination (Roof) Location of exhaust and air-inlet Location of exhaust and air-inlet connections vary between connections vary between models, see Figure 4-2.
Page 21 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Sidewall Termination Details – Direct Vent Installation Figure 4-5(a) Figure 4-5(b) Two-Pipe Termination (Sidewall) IPEX Concentric Termination (Sidewall) Horizontal 4-12” or greater Refer to documentation included with termination kit for than 36”...
Page 22 Slant Fin Corp. │ Installation and Operation Instructions CHS Series  Roof Termination Details – Direct Vent Installation Figure 4-6(a) Figure 4-6(b) Two-Pipe Termination (Roof) IPEX Concentric Termination (Roof) Exhaust Refer to documentation included with termination kit for Vent Screen complete installation instructions.
Page 23 Combustion air containing chemicals such as chloride, fluoride, bromine or iodine or dust and debris will cause corrosion damage of the heat exchanger voiding your Slant/Fin warranty. Refer to Table 4-1 for a list of corrosive products and contaminants sources to avoid.
Page 24 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 4-7 Venting Below Grade For installations that exit the wall below grade: Exhaust 1. Excavate site to a point below where the pipes are to exit as shown. 2. Ensure the wall is fully sealed where the pipes penetrate.
Page 25: Vent/Air-Inlet Termination Clearances
Slant Fin Corp. Installation and Operation Instructions │ CHS Series 5.0 VENT/AIR-INLET TERMINATION CLEARANCES The quick reference table below is to be read in conjunction with the numbered notes as indicated, Figures 5-1 and 5-2, and the Venting Rules and Guidelines in Section 4.0. The instructions detailed in this section are a combination of CHS specific and National Gas Code restrictions.
Page 26 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 5-1 Termination Clearance Quick Reference Diagram (See Table 5-1) Illustrations of Termination Clearances Figure 5-2 Sidewall Termination (See Table 5-1) Clearances “F” and “G” Canada – Minimum 3 ft [915 mm] The US –...
Page 27 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Extra precaution must be taken to adequately support the weight of the Vent/Air-inlet piping in applications using roof-top terminations. Failure to follow these instructions may result in venting or boiler component failure resulting in flue gas spillage leading to property damage, serious injury or death.
Page 28: Condensate Drain
Slant Fin Corp. │ Installation and Operation Instructions CHS Series 6.0 CONDENSATE DRAIN This unit produces liquid condensate in the heat exchanger and venting system as a product of combustion. Steps must be taken to ensure condensate does not collect in the venting system; therefore, all exhaust piping must slope back to the boiler a minimum 1/4”...
Page 29 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 6-1 Condensate Drain Piping  Boiler Condensate Drain Outlet Nut and Gasket Inlet Retaining Nut Ball -float   Inlet Gasket Ball-float Outlet Retaining Nut firmly tightened Hose-barb Adapter Condensate Trap Inlet pushed up until it...
Page 30: Installing Gas Piping
Ensure that:  The gas line connection to the boiler does not apply any weight to the gas valve. Slant/Fin recommends using approved flexible gas piping (if acceptable by local codes) to connect the boiler to the gas supply (See Figure 7-1 for details).
Page 31 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 7-1 Gas Line Connection (Typical) Manual Gas Shutoff Valve Should overheating occur or the gas supply fail to shutoff, close the Manual Gas Shutoff Valve to the boiler. Union Flexible Gas Line Piping Recommended to eliminate strain on the boiler gas...
Page 32: Lighting The Boiler
Slant Fin Corp. │ Installation and Operation Instructions CHS Series 8.0 LIGHTING THE BOILER Before Start-up refer to Mandatory Pre-commissioning Procedure for Plastic Venting in Section 4.0. Failure to follow these instructions can result in explosions, injury or death. Prior to turning the gas supply on and lighting the boiler, ensure all aspects of the installation are complete and in conformance with the instructions provided in this manual, including the Vent/Air-Inlet, Condensate Drain, and System Water Piping.
Page 33 EXTREME ELECTRICAL SHOCK possibly causing serious injury or death. If the unit fails to light consistently and smoothly, contact Slant/Fin for technical assistance at (516) 484-2600. Never allow the boiler to operate if the ignition or operation of the burner is rough or erratic.
Page 34: Gas Valve And Burner Set-Up
*Note: Observe the combustion products with the burner operating at the maximum modulation rate. Table 9-2 Minimum and Maximum Modulation Rates Model Min. Modulation Rate (RPM) Max. Modulation Rate (RPM) CHS-85 1525 (1700 on LP) 6300 CHS-110 1625 (2150 on LP)
Page 35 Screw, to be within the limits listed in Table 9-1. 4. Operate the unit at the minimum modulation rate (Table 9-2). Ensure the combustion remains smooth and and CO remain within the limits (Table 9-1). If not, do not adjust further, contact Slant/Fin for assistance.
Page 36 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 9-1 CHS 85-250 Gas Valve and Venturi Assembly (model CHS 85-110 shown) Gas Valve DO NOT Remove Manifold Pressure Line Pressure Test Port Test Port Throttle / Input Adjustment Screw Venturi Figure 9-2 CHS 300-399 Gas Valve and Venturi Assembly Manifold Pressure...
Page 37: Boiler And Heating System Piping
For retrofits, all system piping, including radiators, must be cleansed of build-up including sludge and scale. All systems, old and new, must be cleansed to remove flux, grease and carbon residue; Slant/Fin recommends cleaning the boiler system with “Fernox F3 Cleaner”. For retrofit applications with heavy limescale and sludge deposits, a heavier duty cleaner may be required;...
Page 38 WATER” LED should illuminate. Generate a burner demand; the burner should not fire and “Lockout 67 ILK OFF” should appear on the screen. Contact Slant/Fin for assistance if this does not happen. 2. Fill the boiler with water; the “LOW WATER” LED should turn off. Clear the Lockout from the display board;...
Page 39 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Near Boiler Piping (CHS 85-110) Figure 10-1(a) Figure 10-1(b) Supply/Return Bottom (CHS 85-110) Supply/Return Top (CHS 85-110) Auto Air-Vent Auto Air-Vent Inlet Pressure Relief Valve Pressure Relief Valve Outlet Pressure Gauge Pressure Gauge Outlet Inlet...
Page 40 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Near Boiler Piping (CHS 155-250) Figure 10-2(a) Figure 10-2(b) Supply/Return Bottom (CHS 155-250) Supply/Return Top (CHS 155-250) Auto Air-Vent Inlet Auto Air-Vent Pressure Relief Pressure Relief Valve Valve Pressure Gauge Outlet Pressure Relief Valve (alternate...
Page 41 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Near Boiler Piping (CHS 300-399) Figure 10-3(a) Figure 10-3(b) Supply/Return Bottom (CHS 300-399) Supply/Return Top (CHS 300-399) Auto Air-Vent Auto Air-Vent Inlet Pressure Relief Valve Pressure Relief Valve Pressure Gauge Outlet Inlet Pressure Relief...
Page 42 (See Table 10-2 for minimum flow rate requirements). To ensure the minimum flow rate is attained, Slant/Fin strongly recommends installing the boiler in a “Primary/Secondary” plumbing configuration utilizing “Closely Spaced Tees” or a “Low Loss Header” to de-couple the Boiler-Primary loop from the System-Secondary loop(s).
Page 43 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 10-4 Circulator and Pipe Size Requirements Minimum Primary Loop Pump Size Temp. Boiler Flow Boiler Head Minimum Model Rise (ºF) Rate (GPM) Loss (ft) Pipe Size B&G Grundfos Taco Armstrong 1”...
Page 44 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 10-4(a) CHS 85-110 Head Loss Curve Flow Rate (US gpm) Figure 10-4(b) CHS 155-250 Head Loss Curve Flow Rate (US gpm) Figure 10-4(c) CHS 300-399 Head Loss Curve Flow Rate (US gpm)
Page 45 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Air Removal – The boiler and system plumbing layout must be configured to promote the removal of air from the water. Air vents and bleeders must be strategically placed throughout the system to aid in purging the air from the system during commissioning of the boiler.
Page 46 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Indirect Fired Water Heater – When installed as per Figure 10-6, the indirect fired water heater is in series with the boiler during a demand for DHW. Therefore, its head loss, along with the head loss of the boiler and associated piping, must be considered when sizing the circulator.
Page 47 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 10-5 Primary/Secondary Plumbing (Single System Circulator Configuration) Water connection locations will vary between boiler models; refer to Figures 10-1 to 10-3.
Page 48 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 10-6 Primary/Secondary Plumbing (Multiple System Circulator Configuration) Water connection locations will vary between boiler models; refer to Figures 10-1 to 10-3.
Page 49 120VAC isolation relay be used instead of powering the system circulator directly from pump output C (i.e. pump output C is limited to 3 Amps or 1/6hp). Table 10-5 Minimum Pipe Sizes for Multiple Boiler Applications CHS-85 CHS-110 CHS-155...
Page 50 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 10-7 Multiple Boiler Lead-Lag Plumbing Configuration (Small DHW Requirements)
Page 51 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 10-8 Multiple Boiler Lead-Lag Plumbing Configuration (Large DHW Requirements)
Page 52: Field Wiring
Slant Fin Corp. │ Installation and Operation Instructions CHS Series 11.0 FIELD WIRING All wiring must be in accordance with the Canadian Electrical code, CSA C22.2 and any applicable local codes. Ensure that the wiring complies with this manual. The boiler must be electrically grounded in accordance with the National Electrical Code ANSI/NFPA 70, local codes, and/or the Canadian Electrical Code CSA C22.1.
Page 53 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 11-1 Line Voltage Field Wiring Table 11-1 Line Voltage Field Connections Connection Location Description Location for connecting line voltage of the power supply. Note; most installation codes (120VAC) require the installation of a service switch to break line voltage to the appliance. PUMP A 120VAC output to the DHW circulator;...
Page 54 Sensor Common – Common port for field inputs SYSTEM, OUTDOOR and DHW. System Water Temperature – An optional strap-on System Sensor is available from Slant/Fin (P/N 81 8146 000). When connected to terminals 6 and 7, the control will SYSTEM indicate a “CH”...
Page 55 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Low Voltage Terminals – “R” terminals 2 and 3 of the 24VAC I/O barrier has 24VAC potential from the internal transformer. Do not connect power from this terminal to any other terminal other than terminals 4, 5 and 6 (LIM, CH1 and CH2 (LL)).
Page 56 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 11-3 DHW Input Contacts (Multiple Boilers)
Page 57: Wiring Schematics
Slant Fin Corp. Installation and Operation Instructions │ CHS Series 12.0 WIRING SCHEMATICS Figure 12-1 CHS Connection Diagram...
Page 58 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 12-2 CHS Ladder/Logic Diagram...
Page 59: Installation Checklist
Slant Fin Corp. Installation and Operation Instructions │ CHS Series 13.0 INSTALLATION CHECKLIST Installation  1. If operating on Propane Gas, convert boiler using appropriate Kit number. See Table 7-1.  2. Locate the boiler in accordance with Section 3.0 of this manual. ...
Page 60: Annual Maintenance And Inspection
Combustion Chamber Cleaning Procedure Slant/Fin recommends having the combustion chamber cleaned after the first year of operation, with subsequent cleanings scheduled based on the condition of the combustion chamber at the time. Units operating with LP Gas or in an industrial environment may require more frequent cleanings.
Page 61 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Refractory Ceramic Fibers (RFC) Personal Protective Equipment Recommended - Read the following warnings and handling instructions carefully before commencing any service work in the combustion chamber. The insulating material on the inside of the burner plate contains Refractory Ceramic Fibers and should not be handled without personal protective equipment.
Page 62: Troubleshooting
Slant Fin Corp. │ Installation and Operation Instructions CHS Series 15.0 TROUBLESHOOTING Observe the following precautions when servicing the boiler. Failure to comply with these may result in fire, property damage, serious injury or death. Servicing the Boiler  Disconnect or shutoff all energy sources to the boiler: 120VAC power, water and gas. ...
Page 63 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 15-1 CHS Control Panel Figure 14-1 Tft Model Fuse “C” ATO 2A 32V Auto Blade Type Fuses “A” and “B” 3AG Control Panel Cover 7A 250 Fast-Acting Control Panel Fuses The CHS boiler is equipped with three (3) fuses.
Page 64 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Loss of Communication If the Display is not blank, but is displaying “Boiler Search, Modbus address: 1,2,3…” indefinitely, ensure the Molex connector, located behind the display at the top, is connected and that the wires are fully inserted (see Figures 15-2 and 15-3).
Page 65 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Display Diagnostics – The CHS controller and user interface provide detailed operational and diagnostic information for aid in troubleshooting. When power is applied to the boiler the initial screen displayed is the Home page.
Page 66 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION External Limit Tripped Indication that an external limit (wired to “LIM”) is open. Not a problem with boiler, check external limit. Lockout or Hold 79 –...
Page 67 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Blocked venting Check for blockage of the exhaust-vent, Air-inlet, combustion blower, gas valve venturi, heat exchanger etc. Insufficient gas line pressure Ensure the manual gas shutoff valve is open.
Page 68 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Outdoor sensor wiring Check wiring of outdoor sensor. Wires should connect to SENSOR inputs “OUTDOOR” and “COM”. Faulty sensor Check sensor. Should be free of ice and snow. Check resistance of sensor and compare to thermistor resistance chart, see Table 15-2.
Page 69 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-2 Thermistor Resistance vs. Temperature Temp °F (°C) Resistance Ohms (Ω) Temp °F (°C) Resistance Ohms (Ω) -22 (-30) 176,133 122 (50) 3,603 -4 (-20) 96,761 131 (55) 2,986 14 (-10) 55,218 140 (60)
Page 70 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-3 Hold and Lockout Codes Code Description Note Internal fault: Flame bias shorted to adjacent pin Hold Internal fault: SLO electronics unknown error Hold Internal fault: Safety Key 0 Lockout Internal fault: Safety Key 1 Lockout...
Page 71 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-3 Hold and Lockout Codes Code Description Note Inlet sensor fault Hold Outlet sensor fault Hold DHW sensor fault Hold Header sensor fault Hold Stack sensor fault Hold Outdoor sensor fault Hold Internal fault: A2D mismatch Lockout...
Page 72 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-3 Hold and Lockout Codes Code Description Note Pilot valve ON Lockout Pilot valve OFF Lockout Block intake ON Lockout Block intake OFF Lockout 166-171 RESERVED Main relay feedback incorrect Lockout Pilot relay feedback incorrect Lockout...
Page 73 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-3 Hold and Lockout Codes Code Description Note Unconfigured Delta T limit set point setting Lockout Unconfigured DHW high limit set point setting Lockout Unconfigured Outlet high limit set point setting Lockout Unconfigured Stack limit set point setting Lockout...
Page 74 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-4 Alert Codes Code Description Action/Response None (No alert) Alert PCB was restored from factory defaults Safety configuration parameters were restored from factory defaults Configuration parameters were restored from factory defaults Invalid Factory Invisibility PCB was detected Invalid Factory Range PCB was detected Invalid range PCB record has been dropped...
Page 75 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-4 Alert Codes Code Description Action/Response Safety processor brown-out reset occurred Application processor watchdog reset occurred Application processor brown-out reset occurred Safety processor watchdog reset occurred Alarm was reset by the user at the control Burner control firing rate was >...
Page 76 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-4 Alert Codes Code Description Action/Response IAS open step rate was invalid RESERVED 112 -114 Fan was limited to its minimum duty cycle Manual rate was > CH max modulation rate Manual rate was >...
Page 77 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-4 Alert Codes Code Description Action/Response RESERVED 175-182 Lead Lag P-gain was invalid Lead Lag I-gain was invalid Lead Lag D-gain was invalid Lead Lag OFF hysteresis was invalid Lead Lag ON hysteresis was invalid Lead Lag slave enable was invalid Lead Lag hysteresis step time was invalid...
Page 78 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-4 Alert Codes Code Description Action/Response Abnormal Recycle: LCI off during Drive to Light off Rate Abnormal Recycle: LCI off during Pre-Ignition test Abnormal Recycle: LCI off during Pre-Ignition time Abnormal Recycle: LCI off during Main Flame Establishing Period Abnormal Recycle: LCI off during Ignition period Abnormal Recycle: Demand off during Drive to Purge Rate...
Page 79 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Table 15-4 Alert Codes Code Description Action/Response Abnormal Recycle: Hardware flame current invalid Abnormal Recycle: Hardware flame rod short Abnormal Recycle: Hardware invalid power Abnormal Recycle: Hardware invalid AC line Abnormal Recycle: Hardware SLO flame ripple Abnormal Recycle: Hardware SLO flame sample Abnormal Recycle: Hardware SLO flame bias range...
Page 80 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Table 15-4 Alert Codes Code Description Action/Response LCI demand lost in run Demand lost in run STAT demand lost in run Demand lost in run due to no flame 464- RESERVED Internal error: EEPROM write was attempted before EEPROM was initialized Internal error: EEPROM cycle count address was invalid...
Page 81 Building Owners - Replacement parts are available from your stocking wholesaler. Contact your local Installer or Wholesaler for assistance with parts. Wholesalers - Contact Slant/Fin inside sales department when ordering replacement parts at 1-516-484-2600. Installers - Contact Slant/Fin tech support department if technical assistance required at 1-516-484-2600.
Page 82 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Figure 16-1(b) CHS Cabinet Cabinet, Vent and Air-Inlet Parts Figure 16-1(c) CHS Controls Electrical Housing, Controller, and Display Module...
Page 83 Slant Fin Corp. Installation and Operation Instructions │ CHS Series Figure 16-1(d) CHS Installation Kit Natural to LP Conversion Kit Table 16-1 Parts List: Item Model Part Number Description CHS 85-110 81 8010 000 Premix Burner CHS 85-110 CHS 155-250 81 8011 000 Premix Burner CHS 155-250 CHS 300-399...
Page 84 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Item Model Part Number Description CHS 300-399 (NG) 81 8029 000 Gas Valve NG Orifice 9.6mm CHS 300-399 CHS 300-399 (NG) Gas Valve NG Orifice O-Ring CHS 300-399 81 8144 000 CHS 85-250 81 8143 000 Gas Valve Screws/Seals CHS 85-250...
Page 85: Parts List
Slant Fin Corp. Installation and Operation Instructions │ CHS Series Item Model Part Number Description CHS 85-399 Flue Sensor, Dual 81 8050 000 CHS 85-250 81 8075 000 1 ½” MJ Coupling CHS 85-250 CHS 300-399 81 8076 000 2" MJ Coupling CHS 300-399 CHS 85-110 81 8078 000 Air-inlet Assembly CHS 85-110...
Page 86 Slant Fin Corp. │ Installation and Operation Instructions CHS Series Item Model Part Number Description CHS 85-399 81 8062 000 Condensate Trap CHS 85-110 Top Panel CHS 85-110 81 8138 000 CHS 155-250 81 8139 000 Top Panel CHS 155-250 CHS 300-399 81 8140 000 Top Panel CHS 300-399...
Page 87 Slant Fin Corp. Installation and Operation Instructions │ CHS Series NOTES...
Page 88 ©Slant/Fin Corp. 2013 • 613 • PUBLICATION CHS-40 SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600 FAX: (516) 484-5921 • Canada: Slant/Fin , Mississauga, Ontario LTD/LTEE www.slantfin.com...

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