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Instructions for installation and servicing ecoTEC 839592_12
4.16 Thermostatic
radiator
valves
The boiler has a built in automatic by-pass valve making
it ideal for use in systems with thermostatic radiator
valves (no separate system by-pass is required). For
optimum fuel economy where TRV’s are used they must
be used in conjunction with a boiler control interlock. A
programmable room thermostat or separate timer and
room thermostat will ensure complete boiler shut down
when the heating demand is satisfied. (The radiator in
the room containing the room thermostat should not be
fitted with a TRV).
4.17 Frost
protection
The boiler has an integral frost thermostat which is
designed for protection of the boiler. To protect remote
or exposed parts of the heating system or property
additional frost protection measures must be taken such
as the installation of an external frost thermostat. This
frost thermostat should be connected across the boiler
terminals 3 and 4, in parallel with any external heating
controls.
Note
External frost protection cannot be used when
plug in timers are utilised.
4.18 Circulating
pump
The boiler incorporates a built in circulating pump that
is fully prewired (no additional wiring is necessary). The
pump incorporates an automatic overrun period after
the boiler switches off.
4.19 Anticycling
‘economiser’
control
The boiler incorporates a built in anticycling control to
ensure that energy wasteful short cycling of the boiler
cannot occur. This control prevents the boiler from
reigniting for a preset period after central heating
operation (the hot water operation is unaffected by this
control and hot water can be drawn at any time).
Note
To temporarily override the anticycling control
turn the main boiler on/off switch to the off
position “0” and then back to the on position
“I” after a few seconds.
4.20 Automatic pump spin control (APS)
The boiler incorporates a built in control which will spin
the built in circulating pump and operate the diverter
valve (ecoTEC combination boilers only) once in a
23 hour period. This control helps to prevent seizure
when the boiler is not operated for a period of time.
This control is not active when the power supply to the
appliance is turned off.
Boiler installation sequence 4
Содержание ecoTEC SERIES
Страница 59: ...Appendix EG declaration of conformity Appendix...
Страница 60: ...Installation Commissioning and Service Record Installation Commissioning and Service Record...
Страница 61: ...Please affix the label from the rear cover of the control box over this area...
Страница 63: ......
Страница 64: ...839592_12 GBIE 062010 Subject to alterations...