Installation - Electric Boosted Systems; Installation Procedure - Rinnai Prestige Operation & Installation Manual

InsTallaTIon - eleCTRIC boosTeD sysTeMs

InsTallaTIon pRoCeDuRe

1. Install Solar Collectors and Cylinders
Position and install the solar collectors and cylinder in accordance with the section 'Standard Installation' on
page 23�
2. Connect PTR Valve
Connect the PTR Valve in the location shown in the relevant diagram of pages 30 to 45� Leave the valve
outlet pointing down. Tighten the valve using the spanner flats - never use the valve body.
The PTR Valve must be adequate for the thermal loading applied to the storage cylinder� In the case of gas
boosted systems, the thermal load is applied only by the solar collectors. The continuous flow hot water
heater does not apply thermal load to the storage cylinder� The potential solar output for the solar collectors
at PTR Valve relief conditions is listed in page 16�
The PTR Valve pressure ratings vary according the cylinder specifications. The maximum heater input rating
is 10�0 kW� The PTR valve rating MUST EXCEED the total input from the solar collectors� If it does not, the
PTR valve MUST be exchanged for a model of higher capacity�
For example, for a gas boosted solar system with 3 x SP200A collectors, the thermal load is 3 x 1�25 = 3�75
kW. This is less than 10.0 kW, hence the supplied PTR valve is of sufficient capacity.
Use Teflon thread tape on the valve, never use hemp or other sealing materials. Ensure the tape does not
protrude past the end of the thread, which could result in it hanging over the end of the thread and blocking
the water passage through the valve�
3. Connect Fittings
Connect fittings and pipe work as shown in the relevant diagram on pages 30 to 45.
4. Cold Water Supply
Connect cold water supply to the T/A valve inlet. Ensure that the relevant valves are fitted as described inthe
section 'Valves and Fittings' on page 20�
Purge the cold water supply lines to remove air and swarf before final connection.
5. 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
6. 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' on page 19�
WARNING
7. Electric Supply
Rinnai 52 CC OIM Issue 9