Filling The System; Checking Solar Pump Operation; Adjusting Flow Control Valve - Rinnai PRESTIGE Operation & Installation Manual

INSTALLATION & MAINTENANCE - GAS BOOSTED SYSTEMS
• Ensure the lead is protected from light. It must be sealed in place with thermoplastic putty or
silicone. The plug is then connected to the pump and controller assembly as shown in the diagram.
• Replace Pump Assembly Cover.
IT IS IMPORTANT THAT THESE PROBES ARE INSTALLED AS SPECIFIED. FAILURE
TO DO SO WILL LEAD TO MALFUNCTION OR LACK OF HOT WATER.
NOTE

9. Cold Water Supply
• Connect cold water supply to the inlet 'T'. Ensure that the relevant valves as described in the section
"VALVES AND FITTINGS" are fitted.
• Purge the cold water supply lines to remove air and swarf before final connection.
10. Relief Drain Lines
• Independent 15 mm copper pipes must be fitted to the drain outlets of the PTR and ECV. Each pipe
must be open to atmosphere and run with a continual downward grade in a frost free environment to
a visible discharge point. Drain lines must not exceed 9 metres in length.
• Valves or other restrictions must not be placed in the relief valve drain outlet line.
Some water will drip from the drain lines during heating of the water in the storage
cylinder. It is recommended to discharge directly above a drain.
NOTE
11. Hot Water Discharge
• Connect the hot water outlet of the gas booster to the pipe work supplying hot water to the premises.
A temperature limiting device may be required as detailed in the section "HOT
WATER DELIVERY TEMPERATURE".
WARNING
12. Connect Gas to Booster
• Connect a suitable gas supply and isolating valve to the gas booster. Follow instructions supplied
with gas booster. Keep gas booster isolated at this stage.

FILLING THE SYSTEM

Ensure building occupants are warned to stay clear of the solar system components,
building perimeter and roof since hot water or steam may be discharged from pipes
CAUTION
or components.
1. Ensure the electric power supplies to the water heater and pump kit are switched 'OFF'.
2. Ensure the gas supply to the continuous flow water heater is isolated.
3. Turn 'ON' the hot water tap at the sink. Open the stop cock in the cold water mains supply line.
4. The entire system will now be filled with cold water. Most air will be dispelled through the tap. Some
air needs to be bled from the air bleed valve on the collectors.
5. Turn 'OFF' the hot tap at the sink when water flows freely without air bubbles or air bursts. Check all
connections for leakage and tighten if necessary. This applies especially to fittings in positions not
easily assessed such as near the solar collectors. Operate the easing gear of both the PTR and ECV
valves at the storage cylinder to ensure these valves are functional.
If leaks are detected the system must be drained and leaks repaired before the
system is refilled. If this is necessary, cover the solar collectors with packaging
CAUTION
cardboard or a tarp to prevent them from heating which could result in steam or hot
water being discharged from fittings.

CHECKING SOLAR PUMP OPERATION

1. Ensure hot and cold sensors are connected as shown Figure 37.
2. Activate power supply.
3. Pumps will operate when solar energy is available to be collected. Pump operation can be checked by
placing the end of a screw driver to the pump body and the other end of the screw driver near your
ear.
Rinnai Australia - 45 - Solar Split Systems Operating / Installation Manual Version 8 - 18/10/10