Rinnai SPLIT SOLAR Installation Manual download pdf (Page 50)

Rinnai Australia - 48 - Solar Split Systems Operating / Installation Manual Version 9 - 21/11/12

CHECKING SOLAR PUMP OPERATION

1. Ensure hot and cold sensors are connected as shown Figure 39.

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.

ADJUSTING FLOW CONTROL VALVE

The purpose of the flow control valve is to allow the water flow

rate through the collectors and storage cylinder to be

controlled to optimise the performance of the system. The

optimum flow rate for the system will depend on the type of

system (electric or gas boost), the number of collectors, and

the location of the installation (see the solar zone shown in

Figure 40).

Figure 40 - Australian Solar Zones

The flow control valve needs to be adjusted while the pump is

operating. The flow rate valve is read at the bottom of the

baffle float as shown in Figure 41 Using a flat bladed screw

driver turn the screw on the valve until the value from Table 10

is achieved.

Figure 41 - Adjusting Flow Control Valve

The installer will need to set the flow rate to the value shown in Table 10 below.

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

cardboard or a tarp to prevent them from heating which could result in steam or hot

water being discharged from fittings.

If the solar pump does not activate the system can still be commissioned as detailed in

these instructions, but solar preheating will not be available until the pump and

controller operate.

Table 10 - Optimum Flow Rate (Litres/min).

No. of Collectors

Zones

1, 2 & 3

Zone 4

Gas Boosted

1 0.50 0.50

2 1.25 1.25

3 2.10 2.10

1 x SP250A when used with

an SG175, ESG175, SG215

or ESG215 cylinder

0.50 0.35

CAUTION

NOTE

INSTALLATION & MAINTENANCE - GAS BOOSTED SYSTEMS

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 67 68

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Rinnai SPLIT SOLAR Installation Manual Page 50

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