Timing & Cooler Functions; Start Up; Pre-Wet; Tank Water Quality And Replenishment During Operation - Rinnai A20 Installation Manual

8. TIMING & COOLER FUNCTIONS

8.1 START UP

Rinnai Cooler with Dump Valve fitted will have a 15 second delay on start up.
On start up, the Rinnai C Series ServoSeal damper will also open before any other function.
If the Cooler has been OFF for longer than 60 minutes the tank will require refilling. Allow approximately 3-5
minutes depending on the water pressure.

8.2 PRE-WET

The Cooler has been pre-programmed to automatically saturate the filter pads when the pump is turned ON.
Pre-wet is the process of running the pump and wetting the pads without the fan operating ensuring full pad
saturation and optimum cooling potential when the fan starts.
Between 2 and 10 minutes

8.3 TANK WATER QUALITY AND REPLENISHMENT DURING OPERATION

During the Cooler's operation with the pump operating, the Cooler will be evaporating water from the tank and
automatically refilling itself.
Rinnai A Series models will periodically, after a specified number of tank refills, flush out the tank (discharging
water from the drain outlet for approximately 1 minute) without stopping the Cooler.
How frequently this flush occurs will vary according to local water conditions and the rate of evaporation.
Rinnai C Series will not flush as often, as they are fitted with an AquaSave.
NOTE

8.4 SHUT-DOWN TIMES

When the Cooler is turned OFF at the end of use, the controls are programmed to wait 60 minutes before
commencing Shut-down.
This Shut-down procedure starts with draining the tank (approximately 60 seconds). Rinnai C Series models will
also close the ServoSeal damper at the start of the Shut-down procedure. Then a wash cycle is performed to clean
the tank for approximately 30 seconds.
Rinnai
Pump Off Time
Less Than 2 minutes
Longer than 10 minutes
Longer than 60 minutes
Pre-wet Time
No Pre-wet
Pre-wet 1 minute
Pre-wet 4 minutes
Tank has to be filled, therefore total time
including Pre-wet is 5 to 7 minutes
16 Evap AC IM