13
13
PULLIN EVOLUTION SOLAR EXPANSION VESSEL
CHARGE PRESSURE
Remove the dust cap on top of the vessel. Check the
charge pressure using a tyre pressure gauge. The
pressure (with system de-pressurised) should be
3.5bar. If it is lower than the required setting it
should be re-charged using a tyre pump (Schrader
valve type). DO NOT OVER CHARGE. Re-check the
pressure and when correct replace the dust cap.
RE-COMMISSIONING
Check all electrical and plumbing connections are
secure. Close the drain cock. With a hot tap open,
turn on the cold water supply and allow unit to refill.
DO NOT switch on the immersion heater(s) or boiler
until the unit is full. When water flows from the hot
tap allow to flow for a short while to purge air and
flush through any disturbed particles. Close hot tap
and then open successive hot taps in system to
purge any air.
When completely full and purged check system for
leaks. The heating source (immersion heater(s),
boiler or solar primary circuit) can then be switched
on.
BENCHMARK
TM
LOG BOOK
On completion of any maintenance or service of the
Pullin Evolution Solar the Benchmark
TM
“Installation,
Commissioning and Service Record Log Book” should
be filled in to record the actions taken and the date
the work was undertaken. The log book is included
in the back of this instruction book.
USER INSTRUCTIONS
WARNINGS
IF WATER ISSUES FROM THE TEMPERATURE/
PRESSURE RELIEF VALVE ON THE PULLIN EVOLU-
TION SOLAR SWITCH OFF ELECTRICAL SUPPLY
TO THE IMMERSION HEATER(S) (DIRECT UNITS),
SHUT DOWN THE BOILER (INDIRECT UNITS) AND
SHUT DOWN THE SOLAR PRIMARY CIRCUIT. DO
NOT TURN OFF ANY WATER SUPPLY. CONTACT A
COMPETENT INSTALLER FOR UNVENTED WATER
HEATERS TO CHECK THE SYSTEM.
DO NOT TAMPER WITH ANY OF THE SAFETY
VALVES FITTED TO THE PULLIN EVOLUTION
SOLAR SYSTEM. IF A FAULT IS SUSPECTED
CONTACT A COMPETENT INSTALLER.
TEMPERATURE CONTROLS - SOLAR
Temperature control of the solar primary coil is by
means of solar differential temperature controller.
This will usually have been set during commissioning
to give a storage temperature of approximately
60
o
C. Refer to user instructions supplied with the
controller for details of how to adjust this if required.
TEMPERATURE CONTROLS – DIRECT UNIT
IMMERSION HEATER(S)
A combined adjustable thermostat and thermal cut-
out is provided for each immersion heater. The
thermostat is factory set to give a water storage
temperature of approx. 55 to 60
o
C. Access to the
thermostat can be made by opening the immersion
heater cover - DISCONNECT THE ELECTRICAL
SUPPLY BEFORE OPENING THE COVER(S). Tempera-
ture adjustment is made by inserting a flat bladed
screwdriver in the slot on the adjustment disc on top
of the thermostat and rotating. The adjustment
range 1 to 5 represents a temperature range of 10
to 70
o
C (60
o
C will be approximately position 4). If in
any doubt contact a competent electrician.
DO NOT bypass the thermal cut-out(s) in any
circumstances.
TEMPERATURE CONTROLS – INDIRECT
UNITS (Fig. 9)
The Pullin Evolution Solar indirect units are fitted
with an indirect thermostat and thermal cut-out.
These controls must be wired in series with the 2-
port motorised zone valve supplied to interupt the
flow of primary water around the heat exchanger
coil when the control temperature has been
reached. The controls are located within the upper
white terminal housing along with the immersion
heater thermostat. The thermostat is factory set to
give a water storage temperature of approx. 55 to
60
o
C. Access to the thermostat can be made by
opening the terminal housing cover - DISCONNECT
THE ELECTRICAL SUPPLY BEFORE OPENING THE
COVER.