Introduction
Testing undertaken by BSRIA conforms these heaters comply with DHSS Engineering and
Data DN4 and NHS Estates Health Guidance N
ote ‘Safe Hot Water and Surface
Temperature’ (1998).
These heaters are designed as a low level mounted product with air outlet discharge from the
top of the unit. LST function ensures the surface and grille temperature does not exceed 43°C
by measuring leaving air temperature and modulating the flow through the heat exchanger.
These heaters must not be installed in wet rooms or other high humidity areas.
These heaters are designed for use on standard two-pipe pumped central heating systems
with a maximum water temperature of 86° C and a maximum pressure of 6 bar (88lbs/in²).
Pipe connections are 22mm,
Flow direction must follow that shown on the body of the
valve
.
These heaters are classified as a fixed appliance and the electrical connection should be via a
3A fused spur. The fused spur must
not
be directly below the heater but should be accessible
after completion of the installation. All heaters must be earthed.
This heater is fitted with an integral room thermostat.
This heater is fitted with an air outlet thermostat pre-set to 34°C;
and should not be adjusted
above 35°C.
To avoid the possibility of vibration these units must be fitted to a flat even surface.
These heaters are fitted with low temperature cut out stats and will not operate until a water
temperature of approximately 35°C is achieved.
If desired a remote room thermostat can be used in conjunction with this heater. Refer to the
manufacturer’s instructions supplied with the thermostat.
Please note the guarantee may be invalidated if this product is not installed and used in
accordance with these instructions.
For further details please contact our Technical Support on 01245 324560.
Installation Guide
1. Unlock and lower the front access panel using the keys supplied.
2
Fault Finding
1. The fan does not run on any speed setting.
a. Check the power supply is switched ON.
b. Check the fuse in the fused spur.
c. Check the wiring at the fused spur.
d. Check thermostat is calling for heat
e. Check the central heating is switched ON and hot water flowing through system.
f. Vent any trapped air from the system (with the heating system turned OFF).
2. No heat output.
a. Vent any trapped air from the system (with the heating system turned OFF).
b. Check the central heating is switched ON and hot water flowing through system.
c. Check thermostat is calling for heat
d. Balance the central heating system if installed on the same circuit as panel radiators and
increase the circulating pump speed if required.
e. Increase the boiler water temperature.
Providing the power supply is switched on and the room thermostat is calling for heat the
heater will switch on and off automatically with the central heating system.
In the event of difficulty please contact our technical help-line on 01245 324560. It would be
helpful if you do not disconnect the heater from the central heating system prior to calling.
Maintenance.
Warning! Isolate from the electrical supply before performing any work on the
unit.
The internal air filter is removable for servicing. To gain access to the filter, unlock and lower
the front access panel, remove the 2 screws from the filter enclosure panel and lift out.
Carefully lift and remove filter (see fig 3). The filter should be gently tapped to remove any
accumulated dust and vacuumed if necessary.
The coil fins are delicate so take care and only use a soft brush or vacuum cleaner to remove
any dust that may have accumulated.
To replace filter, reverse the removal instructions and ensure the lower front access panel is
securely locked.
The fan(s) and motors should not require servicing. Please contact your supplier if damaged.
Please note in the event of an engineer’s visit, Smith’s Environmental Products Ltd reserve the
rights to apply a call-out charge should the fault prove to be with the system or installation and
not the heater appliance.
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