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8.0 USER INSTRUCTIONS
8.1 WARNINGS
IF WATER ISSUES FROM THE TEMPERA-
TURE/PRESSURE RELIEF VALVE ON THE
UNIT SWITCH OFF ELECTRICAL SUPPLY TO
THE AIR TO WATER HEAT PUMP SYSTEM.
DO NOT TURN OFF ANY WATER SUPPLY.
CONTACT A COMPETENT INSTALLER FOR
UNVENTED WATER CYLINDERS TO CHECK
THE SYSTEM.
DO NOT TAMPER WITH ANY OF THE SAFETY
VALVES FITTED TO THE SYSTEM. IF A FAULT
IS SUSPECTED CONTACT A COMPETENT
INSTALLER.
8.2 TEMPERATURE CONTROL
The water storage temperature at the air to water heat
pump water cylinder is set at the control panel of the
Hydro Unit. This can be set to give temperatures in the
range of 40°C to 75°C, 60°C is recommended. Refer
to the Air to Water Owners Manual for details of how
to adjust the temperature if necessary.
The water cylinder is fitted with an over temperature
thermal cut-out that will operate should the thermo-
static control fail.
DO NOT bypass the thermal cut-out in any cir-
cumstances.
8.3 FLOW PERFORMANCE
When initially opening hot outlets a small surge in
flow 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.
8.4 OPERATIONAL FAULTS
Operational faults and their possible causes are de-
tailed in Section 7.0. 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.
Summary of Contents for HWS-1501CSHM3-UK
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