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O p e r a t i o n
Winter conditions - i.e. CH and DHW required.
The boiler will fire and supply heat to the radiators but will give
priority to DHW on demand during timed on periods.
The DHW pre-heat will operate as described under 'Summer
conditions' during periods when there is no call for CH.
Summer conditions - i.e. DHW only required.
Set the CH mode to OFF.
The boiler will fire periodically for a few seconds to maintain the
DHW calorifier in a pre-heated condition during a timed on
period. The average time period between firing is 90 minutes.
This may vary considerably due to the surrounding ambient
temperature of the boiler. The boiler will fire whenever there is a
demand for DHW during a timed on period.
Note.
The pump will operate briefly as a self-check once
every 24 hours, regardless of system demand.
Control of water temperature
Domestic Hot Water
The DHW temperature is limited by the boiler controls to 65
maximum at low draw-off rate, adjustable via the DHW
temperature set point within the programmer.
Due to system variations and seasonal temperature
fluctuations DHW flow rates/temperature rise will vary, requiring
adjustment at the draw off tap : the lower the rate the higher the
temperature, and vice versa.
Central Heating
The boiler controls the central heating radiator temperature to a
o
maximum of 82
C, adjustable via the CH temperature set point
adjustment within the programmer.
To shut down the boiler
1. For short periods
Set the mains ON/OFF switch (A) to OFF
2. For longer periods
Set the mains ON/OFF switch (A) to OFF, and switch the
electricity supply to OFF. For longer periods the entire system
should be drained.
To relight the boiler
Repeat the procedure detailed in 'To light the boiler'.
Frost protection
If frost protection is required then the boiler should be left
powered. The boiler has built in boiler frost protection to
ensure that the water in the heat exchanger does not drop
o
below 4
C.
If external frost protection is required, a kit can be purchased to
support an external frost thermostat.
BOILER CONTROLS
Legend
A. Boiler ON/OFF switch
B. Display
C. Select button
D. Condensate drain
E. Pressure gauge
CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning
of this appliance care should be taken when handling edges of sheet steel components.
ESPRIT 2 -
User's
Boiler overheat thermostat
This thermostat will shut down the boiler in the event of
overheating. Should this occur a fault code "
displayed. Press the select button (C) for greater than 3
seconds and the boiler will relight.
If the fault recurs, turn off the boiler and consult a Gas Safe
Registered Engineer or in IE a Registered Gas Installer (RGII).
Flame failure
Should this occur a fault code "
Press the select button (C) for greater than 3 seconds and the
boiler will relight.
If the fault recurs, turn off the boiler and consult a Gas Safe
Registered Engineer or in IE a Registered Gas Installer (RGII).
Loss of system water pressure
The gauge (E) indicates the central heating system pressure. If
the pressure is seen to fall below the original installation
pressure of 1-2 bar over a period of time then a water leak may
be indicated. In this event conduct the re-pressurising
procedure (see Trouble Shooting - Problem 4). If unable to do
so or if the pressure continues to drop a Gas Safe Registered
o
C
Engineer or in IE a Registered Gas Installer (RGII) should be
consulted.
DO NOT FIRE THE BOILER IF THE PRESSURE HAS REDUCED TO
ZERO FROM THE ORIGINAL SETTING.
C o n d e n s a t e D r a i n
The condensate drain (D) must not be modified or blocked.
Blockage of the condensate drain, caused by debris or
freezing, can cause automatic shutdown of the boiler.
If freezing is suspected and the pipe run is accessible an
attempt may be made to free the obstruction by pouring hot
water over the exposed pipe and clearing any blockage from
the end of the pipe. If this fails to remedy the problem the
assistance of a Gas Safe Registered Engineer or in IE a
Registered Gas Installer (RGII) should be sought.
Escape of gas
Should a gas leak or fault be suspected contact your local gas
supplier without delay.
Do NOT search for gas leaks with a naked flame.
C l e a n i n g
For normal cleaning simply dust with a dry cloth.
To remove stubborn marks and stains, wipe with a damp cloth
and finish off with a dry cloth.
DO NOT use abrasive cleaning materials.
M a i n t e n a n c e
The appliance should be serviced at least once a year by a Gas
Safe Registered Engineer or in IE a Registered Gas Installer
(RGII).
A
E
D
LA
" will be
LF
" will be displayed.
B
time
-
prog
prog
select
select
+
P R O G R A M M E R
C
3
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