Inspection And Service - Worcester GREENSTAR HIGHFLOW 440CDi Instruction Manual

CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS SUPPLIES
BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY
IMPORTANT: AFTER REPLACEMENT OF ANY COMPONENTS ALWAYS CHECK FOR
GAS TIGHTNESS WHERE RELEVANT AND CARRY OUT FUNCTIONAL CHECKS AS
DESCRIBED IN COMMISSIONING. ANY O-RING OR GASKET THAT APPEARS
DAMAGED MUST BE REPLACED.
A
D
F
L
C
B
A - MASTER SWITCH FOR ON/OFF
B - MAINS ON/OFF INDICATOR + FAULT DIAGNOSTIC LIGHT
C - CENTRAL HEATING TEMPERATURE CONTROL
D - BURNER ON INDICATOR LIGHT (GREEN)
E - FAULT RESET BUTTON
F - SERVICE BUTTON
G - DOMESTIC HOT WATER TEMPERATURE CONTROL
H - ECO BUTTON (DOMESTIC HOT WATER PRE-HEAT ON/OFF)
I - SYSTEM PRESSURE GAUGE
J - POSITION FOR OPTIONAL PROGRAMMER
K - DISPLAY
L - CENTRAL HEATING BOOST BUTTON
M - NOT USED
INSTALLATION & SERVICING INSTRUCTIONS
8 716 115 219c (03.2010)
K
I
E
H
M
G
J
INSPECTION & SERVICE
IMPORTANT: Any service work must be
carried out by competent registered
engineers, such as British Gas or other
GAS SAFE registered personnel.
NOTE: After servicing, complete the relevant
Service Interval Record section of
the Benchmark Checklist located on
the inside back pages of this
document.
NOTE: A service must NOT be attempted
if a CO/CO analyser is NOT
2
available.
• To ensure the continued efficient operation
of the appliance it must be checked at
regular intervals.
• The frequency of servicing will depend
upon the particular installation conditions
and usage however, an annual service is
recommended.
• The extent of the service required by the
appliance is determined by the operating
condition of the appliance when tested by
fully qualified engineers.
SERVICE FUNCTION:
Setting boiler to maximum:
Note: when running in the heating boost mode,
the boiler will operate both the Central Heating
and DHW circuits. This is to allow sufficient
time for setting procedure.
It will be necessary to run water through the
DHW circuit to ensure that the boiler will not
cycle on low heating demands.
Press and HOLD central heating boost
button (L) for 10 seconds and set Central
Heating temperature to maximum.
The central heating boost button will
illuminate continually.
The boiler will stay in this mode for 15
minutes unless the central heating boost
button is pressed again.
INSPECTION & SERVICE
37