34
Installation and Servicing
SECTION 2 - INSTALLATION
WATER TEMPERATURES
Temperatures can be selected
using the CH temperature control
(A)
2.26 GENERAL CHECKS
CENTRAL HEATING (CH) MODE
1.
Ensure that the CH external controls are
calling for heat.
The display should show:
‘ ’ ‘ON’
2. Gas Rate
Check the boiler gas rate when the boiler is
at maximum output.
Check at the gas meter, with no other
appliance in use.
Refer to Table 2 for gas rates.
3.
Set the central heating external controls
to OFF. The burner should go off and the
pump continue to run for two minutes.
The display should read:
00
4.
Check the correct operation of the timer
(if fitted) and all other system controls.
Operate each control separately and check
that the main burner responds.
Make the following checks for correct operation:
WATER CIRCULATION SYSTEM
1.
With the system COLD, check that the initial pressure is correct to the
system design requirements.
For pre-pressurised systems, this should be 100kPa.
2.
With the system HOT, examine all water connections for soundness. The
system pressure will increase with temperature rise but should not exceed
250kPa.
3.
With the system still hot, turn off the gas, water and electricity supplies to
the boiler and drain down to complete the flushing process.
Note:
A flushing solution should be used during the flushing procedure.
Refer to Section 1.20.
4.
Refill and vent the system, add inhibitor (see Section 1.20), clear all air
locks and again check for water soundness.
5.
Reset the system initial pressure to the design requirement.
6.
Balance the system. Refer to Section 1.19.
7.
Check the condensate drain for leaks and check that it is discharging correctly.
8.
Finally, set the controls to the User’s requirements.
Note:
The pump will operate briefly as a self-check once every 24 hours in
the absence of any system demand.
2.27 RESTART PROCEDURE
To restart boiler, press the RESTART button (F)
Legend
A. CH temperature control
B. Mode Control Knob
C. Boiler Status
D. Burner ‘on’ indicator
E. Function Button
F. Restart Button
G. Pressure Gauge
Knob Setting
CH Flow Temp ºC
Max
80
Min
30
ºC
ON
A
B
E
C
D
MIN
e
RESTART
MAX
BOILER
OFF
BOILER
ON
G
B
C
D
E
F
A
INST
ALLA
TION
Summary of Contents for LOGIC+ SYSTEM S18
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