Pre-Installation; Cleaning Primary Systems - Worcester Greenstar Heatslave II 12/18 Installation, Commissioning & Servicing Instructions

Pre-Installation

Legend:
A:
[1] CONTROL BOX ASSEMBLY
[2] SERVICE MODE BUTTON
[3] CH TEMPERATURE CONTROL KNOB
[4] LCD DISPLAY
[5] CASING SIDE PANEL
[6] FLUE OPENING SECTION
[7] TANK TEMPERATURE CONTROL KNOB
[8] DIAGNOSIS PORT - WORCESTER ENGINEER
[9] SYSTEM PRESSURE GAUGE
[10] FLUE GAS SAMPLING POINT
[11] FLUE MANIFOLD COVER
[12] FLUE OVERHEAT THERMOSTAT PHIAL
[13] AIR INLET CASING FLEXIBLE AIR DUCT
(CONNECTING TO AIR INTAKE ON BURNER)
[14] SECONDARY HEAT EXCHANGER DRAIN
[15] HEAT EXCHANGER FLOW PIPE
[16] CONDENSATE OUTLET
[17] CONDENSATE TRAP
[18] CONDENSATE DRAIN PIPE
[19] FLEXIBLE CONDENSATE DRAIN PIPE CONNECTION
[20] PRIMARY HEAT EXCHANGER
[21] OIL ISOLATING VALVE
[22] BASE PLATE AND OIL DRIP TRAY
[23] COMBUSTION CHAMBER ACCESS DOOR AND ONE PIECE
BAFFLE SET LOCATION
[24] PRIMARY HEAT EXCHANGER DRAIN
[25] EXPANSION VESSEL
[26] EXPANSION VESSEL BRACKET
[27] RIELLO RDB 2.2 BURNER
[28] HEATSLAVE TANK
[29] HEATSLAVE TANK DRAIN
[30] CASING BRACE AND CONTROL BOX SUPPORT
[a] OPTIONAL FASCIA MOUNTED PROGRAMMERS AVAILABLE
(not supplied with the appliance or recommended for external
appliances)
B:
[31] CIRCULATING PUMP
[32] MANUAL RESET TANK OVERHEAT THERMOSTAT
[33] DRAIN POINT
[34] DIVERTER VALVE ASSEMBLY
[35] AUTOMATIC AIR VENT
C:
[36] DHW FLOW TURBINE
[37] TANK TEMPERATURE SENSOR (NTC)
[38] DHW HEAT EXCHANGER
[39] MAINS INLET TEMPERATURE SENSOR (NTC)
[40] DHW PRESSURE RELIEF VALVE
[41] DHW TEMPERATURE SENSOR (NTC)
[42] PRIMARY MANUAL AIR VENT
[43] FLOW TEMPERATURE SENSOR (NTC)
[44] PRIMARY HEAT EXCHANGER SAFETY SENSOR (NTC)
[45] SECONDARY HEAT EXCHANGER MANUAL AIR VENT
[46] SECONDARY HEAT EXCHANGER
[47] PRESSURE RELIEF VALVE
8
4 Pre-Installation
4.1

Cleaning primary systems

Before installation
▶ All the following Pre-Installation sections must be
read and requirements met before starting boiler or
flue installations.
CAUTION: Mains power
▶ Isolate the mains supplies before starting any work
and observe all relevant safety precautions.
Protect the boiler
▶ Debris from the system can damage the boiler and
reduce efficiency. Failure to comply with the
guidelines for the use of water treatment with the
appliance will invalidate the appliance warranty.
▶ It is recommended that a primary water cleanser is
fitted to the system. Worcester offers a system filter
that helps remove both magnetite and non-magnetic
debris.
BEFORE CLEANING THE SYSTEM:
▶ Ensure that the system and pipe work is in good working order.
▶ Where possible keep the existing boiler/circulating pump in
place when flushing the system.
FOLLOW THE GUIDANCE OF BS7593
Treatment of water in domestic hot water central heating and also the
flushing guidelines below.
FLUSHING THE SYSTEM
▶ Fill the system with cold water and check for leaks.
▶ Open all drain cocks and drain the system.
▶ Close drain cocks and add a suitable flushing agent at the correct
strength for the system conditions in accordance with the
manufacturer's instructions.
▶ Circulate the flushing agent before the boiler is fired up.
▶ Run the boiler/system at normal operating temperature as directed
by the manufacturer of the flushing agent.
▶ Drain and thoroughly flush the system to remove the flushing agent
and debris.
▶ It may be necessary to use a power flushing machine to aid the
cleansing procedure in some circumstances.
▶ Close the drain cocks and refill with fresh water and a suitable
inhibitor.
▶ Vent any air from the boiler and system.
INHIBITOR
Add a suitable inhibitor or combined inhibitor/anti-freeze, if the system
is exposed to freezing conditions, to the heating system in accordance
with the DWTA code of practice and inhibitor manufacturer's guidelines.
WARNING: Sealing agents
▶ In cases where all attempts to find a system micro
leak have failed, Worcester, Bosch Group supports
the use of Fernox F4 leak sealer.
Water treatment
Suitable water treatment products can be obtain from the following
manufacturers:
FERNOX 0870 601 5000
www.fernox.com
SENTINEL 0800 389 4670
www.sentinel-solutions.net
Greenstar Heatslave II External ErP - 6 720 813 345 (2014/09)