Filling The System; Checking Solar Pump Operation - Rinnai Enduro XL SP250B Operation & Installation Manual

13. 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 15.
WARNING
14. 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

When filling the system with water, the installer must be careful as high temperature water and steam
can be discharged from the system. Wear protective clothing such as long sleeves, gloves and safety
glasses.
CAUTION
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.
Ensure the electric power supplies to the water heater and pump kit are switched off.
1�
Ensure the gas supply to the continuous flow water heater is isolated.
2�
Turn on the hot water tap at the sink. Open the stop cock in the cold water mains supply line.
3�
The entire system will now be filled with cold water. Most air will be dispelled through the tap. Air should be
4�
bled by temporarily loosening a fitting at the collector outlet.
Turn off the hot tap at the sink when water flows freely without air bubbles or air bursts. Check all connections
5�
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.
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
CAUTION heating which could result in steam or hot water being discharged from fittings..
Once the system is free from leaks, insulate all exposed pipework and fittings.
6�

CHECKING SOLAR PUMP OPERATION

Ensure hot and cold sensors are connected as shown on page 23
1�
Activate power supply.
2�
Pumps will operate when solar energy is available to be collected.
3�
Rinnai 25
INSTALLATION
Low Profile Roof Mounted OIM