Troubleshooting; Mounting The Actuator To The Valve; Verifying Ball Position - Rheem Raypak Hi Delta 302C Installation And Operation Manual

Troubleshooting

Check your power source using a Volt-Ohm meter; check
the following voltages at TB1 terminal block:
TB1-1 to TB1-2 = 108VAC Minimum, 132VAC Maximum
TB1-1 to TB1-3 = 108VAC Minimum, 132VAC Maximum
TB1-2 to TB1-3 = Must be less than 0.6VAC
IF CALL FOR HEAT LED does not illuminate when the
heater has a CFH signal, check for 24VAC between pins 4
and 5 of TB3 on the cold start control. If voltage is present,
check wiring using the wiring diagram. If voltage is not
present, the problem exists in the heater.
IF VALVE DOES NOT MOVE: Check for voltage out at
TB2-1: Should be a 1 to 10VDC output to the actuator
valve. If no voltage is present, check for voltage at pin FS
on the control board, there should be a 12VDC signal. If
the 12VDC signal is not present, verify that the converter
is wired correctly using the wiring diagram.
IF INLET TEMP ERROR is illuminated: The setpoint
temperature has not been reached within the 7-minute
time period.
• Push the Reset Switch, see Figure 9, or remove
power and watch for proper operation.
• Check pump sizing and valve/piping sizing and
correct as necessary.
IF SENSOR OUT OF RANGE LED is illuminated: The
sensor may have a short or open circuit.
• Press and release the Reset Switch (see Figure 9)
and watch for proper operation.
• Replace sensor.
• Check wiring using wiring diagram.

Mounting the Actuator to the Valve

When mounting the actuator to the valve, ensure that
the valve stem is oriented with the machined flat notch
positioned parallel to the "A" and "AB" ports as shown in
Figure 13.
All actuators used by Raypak include the "spring return"
safety feature. This means that upon loss of power during
operation, the valve automatically rotates back to the full
system flow position avoiding high-limit lockouts or other
issues.
10
A
B
AB
Figure 13. Orient Notch Parallel with "A" and "AB" Ports

Verifying Ball Position

All field-installed valves must have the ball properly
positioned. Occasionally differences occur from the
manufacturer of the valve body. The square stem that the
drive linkage attaches to should have a machined notch to
verify ball position, however on occasion it is not there. To
properly orient the ball follow these instructions PRIOR to
installation into your plumbing system.
• Remove the actuator and base from the valve body.
• With port "AB" facing you, rotate the valve stem
approximately 45 degrees clockwise. You must see
two port openings if the ball is correctly oriented.
• If you do not see two openings at this point, continue
rotating the stem and ball until you do.
• Once you can see two openings, STOP, as shown
in Figure 14. Then rotate the stem counterclockwise
until only one opening remains e.g. you can see
completely through the valve (through ports A and
AB).
Now the ball is correctly oriented inside of the valve body.
Reassemble the valve, base and actuator, and then install
the assembly into your piping system as indicated in this
manual.
FLOW
FLAT NOTCH