Ravenheat Little Star LS 80, Инструкции по установке и обслуживанию

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2.4
2.4.1
Domestic hot water mode,
The heat exchanger in the D.H.W. circuit is
a stainless steel plate heat exchanger water
2.4.4
When D.H.W. is no longer called for the boil-
er automatically returns to the central heat-
ing mode.
2.4.5
to water, and domestic water is heated by
Switch la Fig. 50 in the summer position.
converting the water in the central heating
The boiler functions like an automatic gas
circuit. The transference of heat is very high
hot water heater. When D.H.W. is no longer
because the two fluids move in a counter
required the main burner fan and pump
direction flow to each other.
immediately turn off.
2.4.2 Switch la Fig. 50 in the winter position.
T h i s a l s o t a k e s p l a c e w h e n s w i t c h
When a hot water tap is turned on a
la Fig. 50 is on winter if there is no demand
diaphragm diverter valve excludes the cen-
for heat to the central heating system or
tral heating circuit, the boiler automatically until the room thermostat/time clock
modulates to maintain the domestic hot
demands for heat to the central heating cir-
water at a constant temperature.
cuit.
Water temperature can be regulated using
the D.H.W. thermostat located on the front
control panel.
3.1 SAFETY DEVICE
2.4.3 When domestic hot water is being drawn
the main burner and pump perform as they
In both central heating and domestic hot
do during central heating except that the
water mode safe operating is ensured by:
burner is commanded by the D.H.W. ther-
- A differential pressure switch which shuts
mostat.
off the main burner if the fan stops or the
flue or combustion air intake duct is
obstructed.
OVERALL DIMENSION
3.1.2 An overheat cut off thermostat set slightly
higher than the high limit thermostat acts to
turn off the burner to resetable “lockout“
(Fig. 50) item 3.
3.1.3 A safety valve fitted on the
central heating circuit set at
43 psi (3 bar).
A heating circuit (low water)
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