Installation & Maintenance Instructions for an unvented
hot water cylinder with internal thermal expansion
Hot Water
Energy
Storage
Unvented Cylinder
SEPT 2018
17
TECHNICAL SPECIFICATION
Maximum Inlet Water Pressure
12 Bar 1. 2MPa
Operating Pressure
3.0 Bar
Expansion Valve Opening Pressure & Maximum design pressure
8.0 Bar
Opening Pressure of T & P Valve
10.0 Bar
Opening Temperature of T & P Valve
90
o
C
Maximum Pressure on Primary Circuit (Indirect & Solar Coil)
3.5 Bar
Minimum Inlet Pressure
1 Bar 100 KPa
Element Rating
3kW @ 240 V
Fuse Requirement
13A via Double Pole Switch
High Limit Thermostat for Element - Temperature Set Point
85
o
C
Operational Faults
The air expansion volume within the cylinder will
periodically require recharging. Over time this
volume is depleted. The indication that the air
expansion volume needs to be rechargesd is water
intermittently discharging from the expansion relief
valve on the inlet control set. To recharge the air
expansion volume follow the steps listed below.
1. Turn off the heat inputs to the cylinder.
Programmer to off and switch of Immersion heater.
2. Turn off the isolator before the inlet control set.
3. Open the lowest hot water outlet that is supplied
by the cylinder.
4. Open the temperature and pressure relief valve
by rotating and holding the red cap clockwise
approx 1/10 of a turn. Water flow from the tap.
5. When the water stops flowing from the tap and
air is no longer drawn in through the temperature
and pressure relief valve, release the red cap. It will
rotate back to its closed position.
6. Open the isolation valve fitted before the inlet
control set.
7. Allow water to run from hot tap for a short period
before closing the tap. The air expansion volume is
now recharged
If water continues to discharge from the expansion
relief valve then it is recommended to arrange
inspection by a competent installer.
If water discharges from the Temperature and
Pressure Relief valve switch off all power to
immersion heaters and turn off boiler. Contact
Service Engineer to identify and rectify problem.
Do not tamper, remove or block any of the safety
valves fitted to the unit.
Setting of water temperature within the cylinder
Both immersion heater control and boiler heat
control thermostats should have been set during
the installation process. If a different temperature
is required the thermostat cover will need to be
removed.
DO NOT REMOVE THE COVER WITHOUT
FIRST ISOLATING THE ELECTRICAL SUPPLY.
After isolating both the boiler and Immersion heater
supply remove the thermostat cover. To increase
temperature rotate the adjustment knob clockwise
on the thermostat.
The immesion heater control is mounted on the
right.
The boiler control is mounted on the left.
If in any doubt contact a competant electrician.
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision
or instruction concerning use of the appliance in
a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children
without supervision.
USER INSTRUCTIONS