MotorMaster® I Head Pressure Controller Accessory for Split Systems (6 to 12.5 Tons)
FEATURES
Motormaster I solid-state head pressure control regulates outdoor (condenser) fan speed during Cooling mode operation. A temperature sensor, mounted on a return bend of the outdoor (condenser) coil, controls the speed of approved outdoor (condenser) fan motors in order to maintain a constant head pressure in the outdoor (condenser) coil. When properly installed, the control will maintain the appropriate head pressure at low ambient temperatures down to –20°F (–28°C).
On all units, the single Motormaster I control is connected to both outdoor (condenser) fan motors.
Heat Pump ONLY: Speed Control Bypass relay SCB is energized during the Heating mode. The SCB relay bypasses the Motormaster controller output to force all outdoor (condenser) fan motors to run at full speed during Heating mode.
INCLUDES
• 1 Motormaster I 460V• 2 Motors
• 1 Relay, TDR HN67XZ210
• 1 Mounting Plate
• 13 Screws, No. 10 x 5/8
• 1 BLACK Wire 12-in.
• 1 BROWN Wire 22-in.
• 1 BLUE Wire 12-in.
• 10 Wire Ties
| Safety Standards | |
|---|---|
| California Prop 65 | Yes |
| Weights and Dimensions | |
|---|---|
| Operating Weight (lbs) | 38 | Exterior Dimensions (D) (inches) | 18.000000 | Exterior Dimensions (W) (inches) | 13.000000 | Exterior Dimensions (H) (inches) | 10.000000 | Shipping Weight (lbs) | 38.000000 |