Related Manuals for Heat Controller SDAH 24
Summary of Contents for Heat Controller SDAH 24
- Page 1 INSTALLATION INSTRUCTIONS SMALL DUCT HIGH VELOCITY: SDAH 24 / 36 / 48 Fan-Coil Units Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com...
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Page 2: Table Of Contents
Secondary Drain Pan ............. 4 SCOPE MOUNTING ................4 Horizontal Platform Mounting ......... 4 These instructions apply to the Heat Controller SDAH Horizontal Suspended Mounting ........5 Series. Installation instructions for the air distribution DUCT CONNECTIONS ............5 Supply Plenum ............... 5 system are covered in Bulletin 100-145. -
Page 3: Options
Heat Controller blowers feature direct drive motors that extreme weather conditions. are located in the air stream. Each blower wheel is ba- Be sure to position the return air box and filter near the lanced to Heat Controller specifications. -
Page 4: Unit Assembly
Isolation Typical 10 foot (3.6 m) Return Duct Band Pads Secondary Use at least one 90° bend. Drain Pan (SD-20x or 24x) Platform Return Air Box (SD-01-xx) IL00039D.CVS Figure 3. Typical Horizontal Attic Installation © Copyright 2010 Heat Controller, Inc. -
Page 5: Control Box
(864 × 800) (864 × 1111) 42 × 31.5† 42 × 43.75† SD-24B SD-24C (1067 × 800) (1067 × 1111) † NOTE — The drain fitting extends 7/8 inch (22 mm) beyond this dimension. © Copyright 2010 Heat Controller, Inc. -
Page 6: Horizontal Suspended Mounting
DUCT CONNECTIONS Blower Module Supply Plenum Heat Controller has a complete line of round plenum Restrictor Plate adapters available as shown in figures 8. In addition, all blowers include a restrictor plate to be installed between the supply adapter and the unit. The purpose of the re- strictor plate is to eliminate objectionable outlet noise because the blower is delivering more air than required. -
Page 7: Return Duct
Install filter frame into the return air box using four nails or screws. Use the holes furthest from the corners. Insert Heat Controller supplies a return duct system but any filter and hold in place by rotating metal clips. Close return duct system is acceptable provided the pressure grille and secure with clips. -
Page 8: Multiple Returns
Bulletin 100-155 — Page 7 Multiple Returns Refrigerant Coil Connections If more than one return is desired, Heat Controller has a Note return plenum (HM) module. The HM module is availa- All refrigerant coils are shipped from ble in three sizes: 24, 36, 48, and it includes a central our factory pressurized with nitrogen. - Page 9 Attach and tighten lower connecting nut as shown. 3 ton SDAH36B A00808-014 (10 kW) 3.5 to 4 ton SDAH48B (12 to 13.6 A00808-015 Attach and tighten upper connecting nut as shown. Remove nut as shown. © Copyright 2010 Heat Controller, Inc.
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Page 10: Water Connections
BLEED VALVE (VENT) AIRFLOW The thermal measuring bulb is placed as shown. It needs to be in contact with copper tube. BLEED VALVE IL00054b.CVN (DRAIN) (b) Chilled Water Coil Figure 13. Water Coil Connections © Copyright 2010 Heat Controller, Inc. -
Page 11: Coil Cleaning
40 seconds, in each room. Both methods are de- then stops. The system is now off. scribed later in this section. © Copyright 2010 Heat Controller, Inc. -
Page 12: Checking Airflow
High Static, Restrictive duct system. Add outlets, add splitter vane in tee, reduce the number of Low Amperage tees and elbows in plenum, increase plenum size to 9” equivalent, or Open restrictor to proper amperage. © Copyright 2010 Heat Controller, Inc. -
Page 13: How To Measure Air Flow
KNOTS by 2.37 to obtain CFM. way is to use a short piece of ruler or yardstick and clear 5. Use the Heat Controller Service Report Form to plastic tubing as shown in Fig. 15. record your system readings and to determine the system total airflow. -
Page 14: Charging The System
To compensate for this charge difference some outdoor couple. Tape or strap the sensor firmly against the unit manufacturers have a charge compensator device surface of the liquid line and cover with insulation. that stores charge while in heating mode. Unfortunately © Copyright 2010 Heat Controller, Inc. - Page 15 The same problem The Heat Controller System will show a lower suction can occur for long refrigerant lines; in this case, increase pressure during the cooling mode than a conventional the size of the liquid line to reduce the pressure drop.
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Page 16: Maintenance
If the motor is to be changed, first the blow- er wheel must be removed as mentioned above, and then the screws fastening the motor to the inlet ring must be removed. Figure 16. Removal of the Motorized Blower Assembly © Copyright 2010 Heat Controller, Inc. -
Page 17: Blower Performance
60 Hz – 230V 760 (360) 700 (330) 640 (302) 550 (260) 450 (212) SDAH24x-A1 SDAH36x-A1 1380 (617) 1300 (613) 1200 (566) 1090 (514) 950 (448) 1480 (698) 1430 (674) 1360 (642) 1220 (575) 930 (439) SDAH48x-A1 © Copyright 2010 Heat Controller, Inc. - Page 18 Tube Diameter – in. (mm) (9.5) Water Coil No. of Rows Fin Density – fins/in. (fins/m) 15.5 (610) Water Connection Size, ODF Sweat – in. (mm) (22.2) Condensate drain connection size, FPT – in. (mm) (19) © Copyright 2010 Heat Controller, Inc.
- Page 19 Bulletin 100-155 — Page 18 PAGE INTENTIONALLY LEFT BLANK © Copyright 2010 Heat Controller, Inc.
- Page 20 10/2010 04/2009...