This manual must be left with owner and should be hung on or adjacent to the boiler for reference. ® C US HIGH EFFICIENCY FIRETUBE CONDENSING GAS BOILER MODELS CHS-85 through CHS-399 – APPENDIX A – CONTROLLER AND DISPLAY INSTRUCTIONS IMPORTANT READ ALL OF THE FOLLOWING WARNINGS AND STATEMENT SYMBOLS AND DEFINITIONS BEFORE READING THE INSTALLATION INSTRUCTIONS ! DANGER Danger Sign: Indicates a hazardous situation which, if not avoided, will result in serious injury or death.
Table of Contents 1.0 INTRODUCTION ........................................................................................................................... 1 1.1 Clearing a Lockout .................................................................................................................... 1 1.2 Keypad....................................................................................................................................... 1 1.3 Home Screen .............................................
Controller and Display │Slant Fin Corp. CHS Series 1.0 INTRODUCTION The Controller and Display, together, form the control system of the Slant/Fin CHS boiler. All control configuration parameters are stored in non-volatile memory in the CHS controller. Access to controller status and configuration is achieved with the display. Interaction with the display is performed by physically touching the buttons on the display keypad.
Slant Fin Corp. │Controller and Display CHS Series 1.3 Home Screen The Home Screen is displayed following initial power-up and can be displayed at anytime by simply pressing the “Home” button. The Home Screen provides a summary of the current boiler status, most recent Alert or Lockout, and readings from chosen boiler sensors. Figure 1-2 below, identifies each Home Screen and keypad item; Table 1-1 describes them.
CHS Series Controller and Display │Slant Fin Corp. Table 1-1 Home Screen & Key Pad Description (Reference Figure 1-2) Item Name Description 1 Back button Returns the display to the previous screen in the menu structure. 2 i-Information button Displays the Main Menu screen, where all control settings, diagnostics, etc are accessed via a series of sub-menus. 3 Home button Returns the display to the Home Screen (screen illustrated in Figure 1-2).
Slant Fin Corp. │Controller and Display CHS Series 2.0 i-Information Screen (Main Menu) Figure 2-1 i-Information Screen i-Information – Main Menu screen, accessed by pressing the “i” button, lists the major submenus. Use the arrow buttons to navigate the menu options; when the desired option is highlighted it will appear at the top of the screen (i.e. Quick Start in the example right); select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.1 Quick Start Figure 2-2 Quick Start Screen Quick Start – screen, accessed by selecting “Quick Start” from the “i-Information” screen, provides a summary of the most common settings that will need to be adjusted (or considered) when initially setting up the boiler. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Slant Fin Corp. │Controller and Display 2.2 CHS Series Login Figure 2-3 Login Screen Login - Parameters that are password protected require an installer to enter the password before they can be changed. A message indicating this may appear when a password protected parameter is selected. To enter the password, touch the “iInformation” button and select Login to access the keyboard screen. Use the horizontal and vertical directional buttons (▼▲◄►) on the keypad to navigate the keyboard screen.
Controller and Display │Slant Fin Corp. CHS Series 2.3.1 Forced Rate Figure 2-5 Forced Rate Test Screen Forced Rate – test screen, permits the installer to force the burner to operate at “high fire” or “low fire” for the purpose of combustion setup and diagnoses. Set the “Manual firing rate” to high or low fire by using the up and down (▲▼) buttons to highlight either “Set high fire” or “Set low fire”; then select it by pressing the “OK” button.
Slant Fin Corp. │Controller and Display CHS Series 2.3.2 Manual Burner and Pump Operation Figure 2-6 Manual Burner and Pump Operation Test Screens Manual Burner Operation Burner switch Manual firing rate Firing rate control Off 1625 RPM Auto Manual Pump Operation CH Pump Control DHW Pump Control Boiler Pump Control Auto Auto Auto Manual Burner Operation – test screen, allows the installer to manually control the firing rate of the burner.
Controller and Display │Slant Fin Corp. CHS Series 2.4 Advanced Setup Figure 2-7 Advanced Setup (Menu) Screen Advanced Setup CH Config DHW Config Lead Lag Config System Config Modulation Config Delta T Limits T-rise Limits Frost Protection Config Burner Control Timings & Rates Burner Control Ignition Advanced Setup – menu screen, accessed by selecting “Advanced Setup” from the “i-Information” screen, lists all of the configuration parameter groups.
Slant Fin Corp. │Controller and Display CHS Series 2.4.1 CH Config Figure 2-8 Central Heat Configuration Main Menu Screen CH Config CH Config Outdoor Reset Config Warm weather shutdown CH Config – main menu screen, accessed by selecting “CH Config” from the “Advanced Setup” screen, lists the sub-menus specific to the Central Heat Configuration. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series Use of 4-20mA Input Setpoint source – If “Local” is selected as the “Setpoint source”, the “CH setpoint” value entered on the screen, depicted in Figure 2-10, is used for control. If 4-20mA is selected as the “Setpoint source”, the boiler determines its setpoint from the 4-20mA signal. The setpoint is calculated from a factory-set scale between 60°F corresponding to 4mA, and 190°F corresponding to 20mA.
Slant Fin Corp. │Controller and Display CHS Series 2.4.1.2 CH Config - Outdoor Reset Config Figure 2-10 Outdoor Reset Configuration Screen (CH Config) Outdoor Reset Config – sub-menu screen, allows the installer to set parameters specific to the effect the outdoor temperature has on the operation of the boiler during local (i.e. non Lead Lag) Central Heat demands. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.4.1.3 CH Config - Warm Weather Shutdown Figure 2-12 WWSD Configuration Screen (CH Config) Warm Weather Shutdown (WWSD) – sub-menu screen, allows the installer to enable the WWSD function for local (i.e. non Lead Lag) Central Heat demands, and define at what outdoor temperature it is initiated. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Slant Fin Corp. │Controller and Display CHS Series 2.4.2 DHW Config Figure 2-13 Domestic Hot Water Configuration Screen DHW Config Demand switch Mod sensor DHW setpoint Off hystersis On hysteresis Demand ON temp Demand OFF temp DHW switch Outlet 180 oF 10 oF 10 oF 135 oF 140 oF DHW Config – menu screen, accessed by selecting “DHW Config” from the “Advanced Setup” screen, lists the configuration parameters specific to boiler operation for a DHW demand.
CHS Series Controller and Display │Slant Fin Corp. 2.4.3 Lead Lag Config The CHS boiler can be used as a stand-alone unit or as part of a cascaded arrangement with as many as 8 CHS boilers. The Lead Lag Configuration parameters determine the boiler’s (or group of boilers) behavior during a Lead Lag heat demand [i.e. CH2 (LL) heat input]. Only a demand on CH2 (LL) will initiate Lead-Lag, or “staging”, of cascaded boilers.
Slant Fin Corp. │Controller and Display CHS Series Figure 2-14 Lead Lag Configuration Main Menu Screen Lead Lag Config Lead Lag Master Config Lead Lag Slave Config Lead Lag Outdoor Reset Lead Lag Config – main menu screen, accessed by selecting “Lead Lag Config” from the “Advanced Setup” screen, lists the sub-menus specific to the Lead Lag Configuration. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button. 2.4.3.
Controller and Display │Slant Fin Corp. CHS Series Table 2-10 Lead Lag Master Configuration Parameters Parameter Description Factory Settings Master enable * Enable or Disable Lead Lag Master. One (and only one) unit must be set to “Enable” for Lead Lag operation to function. Disable Setpoint source * Select the Lead Lag setpoint source: Local (control references “Setpoint” setting) 4-20mA (control references 4-20mA signal from an external control).
Slant Fin Corp. │Controller and Display CHS Series 2.4.3.2 Lead Lag Slave Config Figure 2-16 LL Slave Configuration Screen Lead Lag Slave Config – sub-menu screen, allows the installer to set the “Slave mode” which establishes the order in which the boiler is chosen during the staging sequence of a Lead Lag demand. Lead Lag Slave Config Slave mode Equal run time Use First – This mode has priority over all others.
Controller and Display │Slant Fin Corp. CHS Series 2.4.3.3 Lead Lag Outdoor Reset Figure 2-17 LL Outdoor Reset Screen (LL Config) Outdoor Reset Config – sub-menu screen, allows the installer to set parameters specific to the effect the outdoor temperature has on the operation of the boiler during a CH2 (LL) demand. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Slant Fin Corp. │Controller and Display CHS Series 2.4.4 System Config Figure 2-18 System Configuration Main Menu Screen System Config System ID & Access Pump Config Statistics Config High Limits System Config System Config – main menu screen, accessed by selecting “System Config” from the “Advanced Setup” screen, lists the sub-menus specific to the System Configuration.
Controller and Display │Slant Fin Corp. CHS Series Table 2-13 System Identification & Access Parameters Parameter Description Factory Settings Boiler name * Name describing the specific boiler. Limited to 20 characters. e.g.: 110MBH OEM ID Name identifying factory configuration settings; field is read only. N/A MB1 Modbus address * Modbus communication address used by the display to identify the attached controller. No need to change this setting. Range: 1 – 8.
Slant Fin Corp. │Controller and Display CHS Series 2.4.4.2 Pump Config Figure 2-20 Pump Configuration Pump Config – sub-menu screen allows adjustment of the individual pump overrun times; also allows the individual pumps to be manually turned on for testing purposes. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.4.4.3 Statistics Config Figure 2-21 Statistics Configuration Screen Statistics Config – sub-menu screen displays the number of burner and pump cycles, as well as burner run time. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button. Pump cycle counts can be reset by the installer, for example when a circulator is replaced.
Slant Fin Corp. │Controller and Display CHS Series 2.4.4.4 High Limit Figure 2-22 High Limit Screen High Limit Outlet high limit response Recycle & hold High Limit – sub-menu screen displays the outlet limit response. This value is “read only” and cannot be adjusted. Table 2-16 High & Stack Limit Parameters Parameter Description Outlet high limit response 24 Indicates controller response to an outlet temperature exceeding the “Outlet high limit setpoint”. Parameter is read only.
Controller and Display │Slant Fin Corp. CHS Series 2.4.4.5 System Config Figure 2-23 System Configuration Screen System Config – sub-menu screen allows the operator to set the temperature units (ºF/ºC) and the burner “Anti short-cycle time”. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Slant Fin Corp. │Controller and Display 2.4.5 CHS Series Modulation Config Figure 2-24 Modulation Configuration Screen Modulation Config – menu screen, accessed by selecting “Modulation Config” from the “Advanced Setup” screen, allows for adjustment of the min. and max. modulation rates of the boiler. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.4.6 Delta T & T-rise Limits Delta T Limits – accessed by selecting “Delta T Limits” from the “Advanced Setup” screen; Delta T is the difference in water temperature between Inlet and Outlet of the boiler. If the temperature difference (Delta T) is greater than 60oF the burner is shut off for the time specified before firing again. An initial cycle and two recycles are allowed before Lockout occurs.
Slant Fin Corp. │Controller and Display CHS Series 2.4.7 Frost Protection Config Figure 2-26 Frost Protection Screen Frost Protection Config – accessed by selecting “Frost Protection Config” from the “Advanced Setup” screen. Provides optional freeze protection for the boiler system. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.4.8 Burner Control Ignition and Timings & Rates Burner Timings & Rates – accessed by selecting “Burner Timings & Rates” from the “Advanced Setup” screen. Displays the Postpurge rate and time settings; values are “read only” and cannot be adjusted. Burner Control Ignition – accessed by selecting “Burner Control Ignition” from the “Advanced Setup” screen. Displays the “Adjustable lightoff rate” setting.
Slant Fin Corp. │Controller and Display 2.5 CHS Series Diagnostics Figure 2-28 Diagnostic Input/Output Screens Diagnostics – menu screen, accessed by selecting “Diagnostics” from the “i-Information” screen, allows the user to view the operational status of the boiler. Use the up and down (▲▼) buttons to navigate the menu options; when the desired option is highlighted select by pressing the “OK” button.
Controller and Display │Slant Fin Corp. CHS Series 2.5.1 History The CHS controller identifies and records two kinds of events and categorizes them as either Lockouts or Alerts.
Slant Fin Corp. │Controller and Display 2.6 CHS Series Display Setup Figure 2-32 Display Setup User Customizable Screen Display Setup LCD contrast 270 Home screen l ine 1: System setpo 180oF Home screen l ine 2: Operating tem 71oF Home screen l ine 3: Outlet temp 71oF Home screen l ine 4: Inlet temp 71oF Home screen l ine 5: Outdoor temp OPEN OS number Software version DSP49G2094 0.
Controller and Display │Slant Fin Corp.
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