Installation Manual for SB32-9PV and SB64-9PV
The following describes the conditions required to illuminate each particular LED:
(Delta T refers to the difference in temperature between the collector temperature and the storage
temperature.)
- RED: low delta T; Collector sensor open circuit.
- YELLOW: Storage temperature HIGH; Storage sensor short circuit.
- AMBER: Collector temperature HIGH; Collector sensor short circuit.
- GREEN (ON): the Collector temperature is sufficiently greater than the Storage
sensor. System should be running. However, if there is insufficient sunlight,
the LED may be “ON” yet the pump will not be turning.
No LEDs will be illuminated when:
- The power switch is in the OFF position,
- There is no power from the PV panel (no sunshine),
- The Storage sensor is open circuited,
- The Storage sensor measures -3°C or less.
21 – Delta-T Booster II LED’s
16
The Delta T Booster II has two internal fuses, F1 and F2. Both fuses are fast
acting, size 3AG.
F1 is rated at 4 A, 250 VDC and is used to protect the controller circuit.
F2 is rated at 2 A, 250 VDC and is used to protect the motor from overheating.
Should either of these fuses need replacement, they must be replaced with an
equivalent rated fuse.
22 – Delta-T Booster II Fuses and Service Plug
Service Plug
- The “Service Plug” provided is used to
override the Delta-T Booster II’s temperature controls.
The “Service Plug” should only be used for commissioning
and servicing the Solar Boiler™ System.
Fuse F1 - 4 amps
Fuse F2 - 2 amps