5. Connect 140/R pressure transducer EXEC to the SEC (24V FOR OUTPUT) terminal.
Changing fan speeds
Change the fan speeds on an SEC by changing the parameters in the controller itself. Refer to
Appendix E: SEC parameters for DSV units, C generation
Separating the units (DSV060C model)
The DSV060C model's parts can be separated to move it though doorways and elevators. However,
the unit is not designed or certified for installation as a remote condenser and evaporator.
1. Reclaim the whole refrigerant charge from each compressor circuit.
2. Disconnect the evaporator motor high voltage wires. Pull all the wiring into the evaporator
compartment. Remove the bushing/clamp from the routing hole for the evaporator motor
wiring.
3. Cut and remove sections of all the liquid and suction refrigerant lines. Make two cuts in each
line, approximately 6 inches above and below the evaporator floor/condenser roof.
CAUTION
Use a TUBING CUTTER ONLY - do not use a hacksaw to cut refrigerant tubing otherwise serious
damage can occur to refrigeration system!
4. Remove the corner securing the brackets from the outside corners of the cabinet, at the joint
line between the evaporator and condenser sections.
5. Remove the evaporator section.
6. For assembly instructions, see
Assembling split units (8–25 ton models)
.
Condensate trap
Condensate trap fitting is provided on all units and is 3/4-inch functional performance testing (FPT).
The unit requires a field installed external condensate trap. Without a trap, condensate can be
thrown into the airstream. This can cause water overflow, unit damage, and property damage.
This system must be trapped according to a negative system pressure (draw-through). Use the
dimensions in Figure 4. Adhere to local codes for piping the external trap and condensate.
Example: trapping a system up to 2 inches external static pressure
Note:
•
A = (1 inch for each inch of maximum negative static pressure) + 1 inch
•
B = Half of A
•
C =A + B + pipe diameter
15
D-Series Vertical (DSV060C-300C) Air-Cooled Self-Contained Units, C Generation with Smart Equipment Controller
Johnson Controls
