Rinnai SPLIT SOLAR Installation Manual download pdf (Page 49)

Rinnai Australia - 47 - Solar Split Systems Operating / Installation Manual - Version 9 - 21/11/12

8. Connect Temperature Sensor Leads

• The hot (longer) temperature sensor lead should be fitted into

the air bleed / hot sensor lead assembly at the collector hot

return connection as shown in Figures 32 to 37. It must be

sealed in place with thermoplastic putty or silicone.

• Run the lead down the solar return pipe and connect it to the

connection within the pump and controller assembly as

shown in the diagram. Ensure the lead is protected from light.

Figure 39 - Temperature Sensor Leads.

• The cold (shorter) temperature sensor lead should be fitted

as shown in the relevant diagram in Figures 32 to 37.

• 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.

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.

11. Hot Water Discharge

• Connect the hot water outlet of the gas booster to the pipe work supplying hot water to the premises.

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

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 accessed 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.

IT IS IMPORTANT THAT THESE PROBES ARE INSTALLED AS SPECIFIED. FAILURE

TO DO SO WILL LEAD TO MALFUNCTION OR LACK OF HOT WATER.

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.

A temperature limiting device may be required as detailed in the section “HOT

WATER DELIVERY TEMPERATURE”.

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

or components.

cold sensor connection

in pump box.

hot sensor connection

in pump box.

cold sensor lead

connection

hot sensor lead

connection

Figure 39 - Temperature Sensor Leads

NOTE

WARNING

CAUTION

INSTALLATION & MAINTENANCE - GAS BOOSTED SYSTEMS

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