60
SunTouch
®
Control System Installation and User’s Guide
Installing Valve Actuators
For shared equipment systems there are two motorized valve actuators (CVA-24T, P/N 263045) included
with the SunTouch
®
Control System kit.
To install a valve actuator:
1. Remove the valve knob, handle and the four screws, from the valve cover (indicated with arrows).
2. Align the splines of the actuator shaft over the shaft of the valve.
3. If the actuator is not aligned with the mounting holes on the valve cover, rotate the actuator (while
still attached to the valve) until the actuator is positioned correctly over the valve.
4. Secure the actuator with the screws provided. Only use self-tapping screws when required.
5. Mount the valve handle and knob onto the actuator.
6. At the SunTouch
®
Control System Power Center, route the cable up through the 1” grommet and low
voltage raceway to the motherboard (see page 43).
7.
Connecting of valve actuators to the SunTouch Control System Motherboard (see page 53):
- Connect
VALVE A
cable plug into the
IN-TAKE
(suction) 3-pin socket.
- Connect
VALVE B
cable plug into the
RETURN
3-pin socket.
Note:
For more information, see Item 2 and 3 of Plumbing requirements on page 431. Excess
cable can be coiled in the SunTouch Control System enclosure low voltage raceway. Do not coil the
wire in upper low voltage compartment.
For Solar Heating:
Use
VALVE C
for a solar valve actuator when solar heating is being used.
Adjusting the valve position
If the valve rotates to the wrong position, adjust the switch on the back of the actuator between ON1
and ON2 positions. This will rotate the valve to the correct position. The following diagram shows
the standard plumbing and valve actuator position.
Screw
Valve actuator
Screw
Screw
OUT (Valve A - Suction)
IN (Valve B - Return)
IN
IN
OUT
OUT
▼
▼
▼
▼
