Technical data

15
9.0 USER INSTRUCTIONS
9.1 WARNINGS
IF WATER ISSUES FROM THE TEMPERA-
TURE/PRESSURE RELIEF VALVE ON THE
SANTON PREMIER PLUS SWITCH OFF
ELECTRICAL SUPPLY TO THE IMMER-
SION HEATER(S) (DIRECT UNITS) OR SHUT
DOWN THE BOILER (INDIRECT UNITS).
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 SANTON PREMIER
SYSTEM. IF A FAULT IS SUSPECTED CON-
TACT A COMPETENT INSTALLER.
9.2 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
o
to 60
o
C. Access to the thermostat can be
made by opening the immersion heater cover - DIS-
CONNECT THE ELECTRICAL SUPPLY BEFORE
OPENING THE COVER(S). Temperature adjustment
is made by inserting a at 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
o
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.
9.3 TEMPERATURE CONTROLS – INDIRECT
UNITS (Fig. 9)
The Santon Premier Plus Indirect units are tted with
an Indirect Thermostat and Thermal Cut-out. These
controls must be wired in series with the 2 port mo-
torised zone valve supplied to interupt the ow of
primary water around the heat exchanger coil when the
control temperature has been reached. The controls are
located within the lower grey terminal housing along
with the immersion heater thermostat. The thermostat
is factory set to give a water storage temperature of
approx. 55
o
to 60
o
C. Access to the thermostat can be
made by opening the terminal housing cover - DIS-
CONNECT THE ELECTRICAL SUPPLY BEFORE
OPENING THE COVER. Temperature adjustment
is made by inserting a at bladed screwdriver in the
adjustment knob and rotating. The minimum ther-
mostat setting is 10
o
C. The adjustment range 1 to 5
represents a temperature range of 30
o
to 70
o
C (60
o
C
will be approximately position 4). If in any doubt
contact a competent electrician.
On indirect units an immersion heater is also provided
for use should the indirect heat source be shut down
for any purpose. The immersion heater control tem-
perature is set using the immersion heater (Direct)
thermostat, see section 9.2 above for details..
DO NOT bypass the thermal cut-out(s) in any
circumstances.
9.4 FLOW PERFORMANCE
When initially opening hot outlets a small surge in
ow may be noticed as pressures stabilize. This is
quite normal with unvented systems. In some areas
cloudiness may be noticed in the hot water. This is
due to aeration of the water, is quite normal and will
quickly clear.
9.5 OPERATIONAL FAULTS
Operational faults and their possible causes are de-
tailed in Section 8.0. It is recommended that faults
should be checked by a competent installer.
The air volume within the expansion vessel will peri-
odically require recharging to ensure expanded water
is accommodated within the unit. A discharge of water
INTERMITTENTLY from the Expansion Valve will
indicate the air volume has reduced to a point where
it can no longer accommodate the expansion.