|
7 Channel |
3 Channel |
| Material | *MDPE | *MDPE |
| Tubing outside diameter | 1.7" (43 mm) | 1.1" (28 mm) |
| Channel diameter | 6 - Outer pie channels: nominal 0.4" (10 mm) 1 - Center hex channel: nominal 3/8" (9.5 mm) |
3 - Hex channels: nominal 3/8" (9.5 mm) |
| Channel volume | 40 mL/ft 30 mL/ft (center) | 30 mL/ft |
| Installation options** | Sand & bentonite backfill Natural formation collapse | Bentonite & sand cartridges Sand & bentonite backfill Natural formation collapse |
| Coil lengths*** (Coil 4 ft dia.) | 100 ft (30 m), 200 ft (60 m) & 300 ft (90 m) | 100 ft (30 m), 200 ft (60 m) & 500 ft (150 m) |
| Tubing temperature during installation | –15ºC to +35ºC **** | |
| Port plug temperature during installation | +15ºC to +35ºC | |
| Pressure differential (water levels) | 12.5 inch-pounds torqued port plugs are designed to hold 20 psi (50 ft) of head differential. | |
Note:
* Tubing is MDPE; proprietary mix of HDPE and LDPE products.
** Avoid using 'single lifts' of grout, greater than 50 ft in the unsaturated zone.
*** Each CMT coil measures 1 to 2 ft longer than stated.
**** If air temperature is above +35ºC, use cold water to cool down the tubing at the port before installing the port plug.
Note:
Port plugs are tightened to a torque of 12.5 inch-pounds. Plugs in the base, or bottom, of the CMT should be torqued sequentially and incrementally to ensure even expansion.
Note:
Gear clamp is tightened to a torque of 12.5 inch-pounds, so guide point can support up to 20 lbs of additional weight (optional).
Note:
Port plugs are tightened to a torque of 12.5 inch-pounds.
Hand Tools for CMT System Assembly
