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Temperature Management Devices
Your UV system is designed to run continuously to ensure optimal disinfection. However, during
periods when no water is drawn through the system, the energy from the disinfection process can
cause the temperature of the water inside the chamber to rise. In extreme situations elevated water
temperature or the fluctuation in temperature can lower the output of the UV lamp. In these cases,
or if the elevated water temperature is a nuisance, RainHarvest Systems recommends one of the
following forms of temperature management devices.
Cooling Fan
Designed for use on the RainHarvest Systems-HO systems, the fan runs
continuously to cool the water by forced convection. The long-life fan is powered
independently using a compact modular power adapter that operates from 90-
265V (47-63Hz). Order PN MOD-FAN-RF.
Temperature Relief Valve (TRV)
On reaching a higher temperature, the TRV is designed to drain a small amount
of water to allow fresh, cooler water to enter the system. The TRV works without
power and comes complete with 10’ of drain line. Order PN RF-TRV-0.5 for
1/2” ports, PN RF-TRV-0.75 for 3/4” ports, PN RF-TRV-1 for 1” ports and PN
RF-TRV-1.5 for 1 1/2” ports.
Expansion Modules
RF5 and RF6 controllers incorporate an “Infinite Expandability Port” (IEP) which allows
for expansion to the UV sensor and all other modules. Each module (including the sensor)
comes with both a male and female connection. Connect any device to the controller and all
subsequent devices are then connected into the female end of last device added in a “daisy
chain” configuration.
The following optional expansion modules are available for use on RF5 and RF6 UV
controllers.
Contact your authorized distributor for purchasing information.
REMOTE ALARM CONNECTION MODULE: Allows
for a connection to a remote device such as a
buzzer, light, alarm system, PLC, etc., via a pair of
contacts. In normal operation the OK and COM
contacts will be connected, and in a fault condition
(Low UV, Lamp fail, Power Fail), the Fault and COM
contacts will be connected. Maximum Contact
Rating is 1A-120V AC/DC (use 16-22 AWG). Order
PN MOD-RAM-RF.
Summary of Contents for RF4 Series
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