Filling The System - Rinnai SG175 Operation & Installation Manual

INSTALLATION

FILLING THE SYSTEM

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�
CAUTION
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� Using a large screwdriver close the air bleed valve to divert the cold water through the collectors�
cold water
from main
4� Turn on the hot water tap at the sink� Open the stop cock in the cold water mains supply line�
5� The entire system should fill with cold water. The air should be dispelled through the hot tap.
6� Once the tank is completely full of water, open the air bleed valve to direct the cold water from the mains back
to the tank�
cold water
from main
7� 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�
8� 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..
Rinnai
Bleed Valve Closed
Bleed Valve Open
38 Split Solar OIM