Slant/Fin SC-3 Installation And Operating Instructions Manual

Modular boiler controller for gas-fired, oil fired and dual fuel hot water heating plants

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FOR GAS-FIRED, OIL FIRED AND DUAL FUEL HOT WATER HEATING PLANTS

INSTALLATION AND OPERATING INSTRUCTIONS

CONTENTS

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

a) Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

b) Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

c) View of Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

d) System Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Select System Type . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

A. Space Heating Only with Outdoor Reset . . . . . . .12

a) Dip Switch Settings . . . . . . . . . . . . . . . . . . . . . .12

b) Functions and Defaults . . . . . . . . . . . . . . . . . . . .13

c) Adjusting the Settings . . . . . . . . . . . . . . . . . . . . .13

B. Space Heating Only w/Setpoint Control . . . . . . . .17

a) Dip Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . .17

b) Functions and Defaults . . . . . . . . . . . . . . . . . . . . . .18

c) Adjusting the Settings . . . . . . . . . . . . . . . . . . . . . . .20

Viewing the Performance . . . . . . . . . . . . . . . . . . . . . . . . .22

Useful Hints and Reloading Factory Defaults . . . . . . . .23

Testing the Contol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Factory Default Listings . . . . . . . . . . . . . . . . . . . . . . . . . .28

Printed in U.S.A. 605

Part No. 435083000

SC-3 Controller

MODULAR BOILER CONTROLLER SERIES

• Space Heat Systems With Outdoor Reset

• Constant Temperature Setpoint Control

If your system is different than the above, call the Slant/Fin

The SC-3 is a microprocessor control which will sequence up to

three heating stages based on outdoor air temperature and supply

water temperature. Designed to handle a Caravan gas-fired,

oil-fired or *dual fuel-fired hot water heating plant for space

heating or "Setpoint" operation. A large easy to read display

provides current system temperatures and operating status.

ADDITIONAL FUNCTIONS INCLUDE:

Pump exercising. Pump purging. Boiler demand for space heating

loads. Set point demands for set point loads. Test sequence to

ensure proper component operation. CSA C US certified. Setback

input for energy savings.

SPACE HEATING OPERATION: When the outdoor air tempera-

ture drops below a preset value, the heating system is energized.

The SC-3 Controller determines the number of stages required to

meet the space heating needs and fires them. During operation,

the Controller scans system temperatures, adding or deleting

stages as necessary to satisfy heating load.

1- SC-3 Modular Controller

1- Outdoor sensor with enclosure

1- Universal sensor

SETPOINT OPERATION:

The SC-3 adds and deletes stages to minimize the difference

between the desired Setpoint temperature and the actual

measured Supply Water Temperature.

Dual-Fuel

* Not available in Canada

SC-3 Applications

technical services group at 800-873-4346 to

determine the proper control.

Controller Packing List

P/N 435081

P/N 339070

P/N 339071

PUBLICATION SC-3-40

Table of Contents

Summary of Contents for Slant/Fin SC-3

Page 1: Table Of Contents
If your system is different than the above, call the Slant/Fin technical services group at 800-873-4346 to determine the proper control. The SC-3 is a microprocessor control which will sequence up to three heating stages based on outdoor air temperature and supply water temperature. Designed to handle a Caravan gas-fired, oil-fired or *dual fuel-fired hot water heating plant for space heating or “Setpoint”...
Page 2: Installation
SC-3 Controller INSTALLATION C UTION Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic control is not intended for uses as a primary limit control.
Page 3: B) Sensors
SC-3 Controller INSTALLING THE SENSORS OUTDOOR SENSOR SF P/N 339070 MOUNTING THE SENSOR Note: The temperature sensor (thermistor) is built into the enclosure. • Remove the screw and pull the front cover off the sensor enclosure. • The enclosure can either be mounted directly onto a wall or a 2”...
Page 4 SC-3 Controller The Universal Sensor should be placed The Universal Sensor can be downstream of a pump or after an elbow strapped directly to the pipe using or similar fitting. This is especially impor- the cable tie provided. Insulation tant if large diameter pipes are used as...
Page 5: C) View Of Panel
SC-3 Controller...
Page 6: D) System Wiring
SC-3 Controller WIRING THE SYSTEM Use one of the following wiring diagrams to wire your system, along with the appropriate diagram on page 9. 1. Gas fired - Space Heating only 3. Oil fired - Space Heating only If using MM 750P-MT120 L.W.C.O. use Figure C6 on page 9 to wire the control 1.
Page 7 SC-3 Controller 2. Oil fired - Space Heating only NOT : For boiler termination wiring at modules, see page 9...
Page 8 SC-3 Controller...
Page 9: Display
SC-3 Controller DISPLAY: Symbol Description UnOccupied Schedule Stage Displays when the control is in UnOccupied Displays which stage relays are turned on. Mode. Pump Installer Access Level Displays when the primary pump relay is turned Displays when the Installer/Advanced Dip...
Page 10: User Interface
B. Space Heating ONLY with Setpoint Control ........Page 17 To set up the control, go to the appropriate page for your system. If your system is different than the above, call the Slant/Fin technical services group at 800-873-4346 to determine which control can accommodate it.
Page 11: Space Heating Only With Outdoor Reset
SC-3 Controller SPACE HEATING ONLY WITH OUTDOOR RESET CONTROL SET UP DIP SWITCH SETTINGS: General The DIP switch settings on the control are very important and should be set to the appropriate settings prior to making any adjustments to the control through the User Interface. The DIP switch settings change the items that are available to be viewed and / or adjusted in the User Interface.
Page 12: B) Functions And Defaults
SPACE HEATING ONLY WITH OUTDOOR RESET SC-3 Controller Advanced / Installer The Adv / Installer DIP switch selects the access level of the control. In the Installer access level, a limited number of items may be viewed and / or adjusted.
Page 13 (82˚C) to the desired temperature. Range Available: 70˚ to 220˚F (21˚ to 104˚C) Boiler Minimum - The minimum allowed boiler target temperature for Slant/Fin cast iron boilers we recommend 130˚F minimum. 140˚F Press the Menu button until ADJUST is visible on the top line of the display. Press the (60˚C)
Page 14 Item button until BOIL is below ADJUST and MASS is to the right of ADJUST. Default is 2 with 1 being low mass and 3 being high mass. For Slant/Fin boilers we recommend you retain the default setting of 2.
Page 15 SC-3 Controller SPACE HEATING ONLY WITH OUTDOOR RESET Default Display Description Setting Setting Setpoint Occupied - The minimum supply temperature when a setpoint demand is present during the Occupied period. This item is only available when DHW MODE is set to OFF.
Page 16: Space Heating Only W/Setpoint Control
SC-3 Controller SPACE HEATING ONLY WITH SETPOINT CONTROL CONTROL SET UP DIP SWITCH SETTINGS: General The DIP switch settings on the control are very important and should be set to the appropriate settings prior to making any adjustments to the control through the User Interface. The DIP switch settings change the items that are available to be viewed and / or adjusted in the User Interface.
Page 17: B) Functions And Defaults
SC-3 Controller SPACE HEATING ONLY WITH SETPOINT CONTROL Advanced / Installer The Adv / Installer DIP switch selects the access level of the control. In the Installer access level, a limited number of items may be viewed and / or adjusted.
Page 18 Whenever a setpoint demand is present, the primary pump (Prim Pmp) is turned on and the boiler(s) is operated to maintain the setpoint target. Setpoint MODE 3 is the most common application to Slant/Fin setpoint operation. MODE 3 is used in this manual.
Page 19: C) Adjusting The Settings
SPACE HEATING ONLY WITH SETPOINT CONTROL SC-3 Controller STEP ONE: Go to page 12. A. SPACE HEATING ONLY WITH OUTDOOR RESET If BOILER 3 is set to Au program all steps up to and including BOILER DIFFERENTIAL. If BOILER 3 is set to OFF program all steps up to and including DHW MODE. If BOILER 3 is set to Au the DHW MODE will not be present.
Page 20 SPACE HEATING ONLY WITH SETPOINT CONTROL SC-3 Controller Default Display Description Setting Setting WWSD Occupied - The systems warm weather shut down temperature during the Occupied period. A setpoint demand overrides this setting. 70˚F Press the Menu button until ADJUST is visible on the top line of display. Press the (21˚C)
Page 21: Viewing The Performance
SC-3 Controller VIEW THE PERFORMANCE FUNCTION DESCRIPTION STEPS Current outdoor air temperature Press the Menu button until VIEW is visible on the top line of the display. OUTDOOR as measured by the outdoor Press the Item button until OUT appears. Read the numeric display.
Page 22: Useful Hints And Reloading Factory Defaults
SC-3 Controller USEFUL HINTS Hint #1 Reloading Factory Defaults To reload the factory defaults, power down the control for 10 seconds. Power up the control while simultaneously holding the Menu and t buttons. The control will now display the E01 error message. To clear this error message, follow the procedure in the Error Message section below.
Page 23: Testing The Contol
SC-3 Controller TESTING THE CONTROL The control has a built-in test routine that is used to test the main control functions. The control continually monitors the sensors and displays an error message whenever a fault is found. See the following pages for a list of the control’s error messages and possible causes.
Page 24: Error Messages
SC-3 Controller Error Messages The control was unable to read a piece of information stored in its memory. Because of this, the control was required to reload the factory settings into all of the items in the ADJUST menu. The control will stop operation until all of the items in the ADJUST menu of the control have been checked by the user or installer.
Page 25: Technical Data
SC-3 Controller Boiler Control SC-3 - Three Stage Boiler & Setpoint Control –– Microprocessor PID control; This is not a safety (limit) control. Packaged weight –– 3 lb. (1400g), Enclosure A, blue modified PPO plastic Dimensions –– 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm) Approvals ––...
Page 26: Notes
SC-3 Controller NOTES...
Page 27: Factory Default Listings
UN OCC WWSD PURGE 0:20 Min ˚F or ˚C ˚F DHW EXCHANGE 180˚F (82˚C) OCCUPIED DHW EXCHANGE UNOCCUPIED DHW BOILERS SETPOINT MODE 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...