Installation manual

Rinnai Australia - 57 - Solar Split Systems Operating / Installation Manual
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 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.
CHECKING SOLAR PUMP OPERATION
1. Ensure hot and cold sensors are connected as shown in Figure 31.
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 collector 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 collector
collectors, and the location of the installation (see the solar
zone shown in Figure 32).
Figure 32 - 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 33. Using a flat bladed screw driver
turn the screw on the valve until the value from Table 10 is
achieved.
Figure 33 - Adjusting Flow Control Valve
The installer will need to set the flow rate to the value shown in Table 10 below.
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.
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.
The dip switches within the pump control box should not be adjusted.
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.
CAUTION
CAUTION
NOTE
INSTALLATION & MAINTENANCE - ELECTRIC BOOSTED SYSTEMS