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Product Information

Greenstar 4000 – 6 720 891 161 (2020/09)

Legend to figure 3:

[1] Inspection / Heat exchanger cleaning access

[2] Heat exchanger assembly limit temperature sensor

[3] Electrode set

[4] Ignition transformer

[5] Heat exchanger assembly

[6] Gas-air mixing chamber/venturi

[7] Gas valve

[8] Cover for inspection aperture

[9] Pressure sensor

[10] Pump

[11] 3-way valve

[12] Pressure-relief valve (heating circuit)

[13] Pressure gauge

[14] Drain valve

[15] CH return connection

[16] DCW inlet connection

[17] Gas connection

[18] Key control (accessory) housing

[19] Control unit

[20] Fuse (replacement)

[21] DHW outlet connection

[22] CH flow connection

[23] Condensate siphon

[24] Data plate

[25] DHW temperature sensor

[26] Plate heat exchanger

[27] Flow turbine

[28] Flue gas temperature limiter

[29] Schraeder valve

[30] Fan

[31] Flow temperature sensor (supply sensor) at flow pipe

[32] Fan pressure test point

[33] Expansion vessel

[34] Zero flow sensor

[35] Automatic air vent

[36] Flue system connection

[37] Control panel

3.7 Standard accessories

3.7.1 Appliance accessories

Table 5 Appliance accessories

3.7.2 Programmer/timer accessories

The programmers/timers listed can be used with the appliances stated

on the front of this manual.

Table 6 Control accessories

Bosch EasyControl smart control system

Table 7 EasyControl accessories

1) These components are sourced from multiple suppliers and therefore contain

small design differences. Please refer to the relevant maintenance chapter for

more detailed information. Spare parts are fully interchangeable.

Part number Description

7 733 601 245 4000 SimpleSwitch flue adaptor 60/100

7 733 601 250 4000/Compact Pre-piping kit

7 733 600 266 Greenstar System filter (22mm mini)

7 733 600 236 Greenstar System filter (22mm)

7 733 600 237 Greenstar System filter (28mm)

7 733 600 476 Greenstar System filter brass (22mm)

7 733 601 289 4000 Combi DHW Pre-heat Kit

7 733 601 312 4000 Combi 25kW NG Low Nox Kit

7 733 601 313 4000 Combi 30kW NG Low Nox Kit

7 736 900 525 Greenstar Xtra FGHR

7 733 601 316 Earth bonding strip

7 733 601 314 4000/Compact Remote PRV Kit

7 716 192 610 Keyless filling link kit

7 716 192 281 Filling link kit (key included)

7 738 112 911 Automatic filling link

7 733 600 091 Heat exchanger cleaning kit

Part number Description

7 733 600 332 MT20 mechanical timer

1) Must be used with additional temperature controls

7 733 600 333 MT20RF mechanical thermostat

7 738 110 054 Sense I

7 738 111 064 Sense II (including weather sensor)

2) Preheat time control available

7 738 112 323 Comfort+ I RF

7 738 112 324 Comfort+ II RF

7 738 112 338 Comfort+ stat RF

3) Must be used with an additional timer.

7 738 112 321 Comfort+

Part number Description

7 736 701 341 EasyControl (white)

7 736 701 392 EasyControl (black)

7 738 112 351 EasyControl RF key

7 736 701 555 EasyControl TRV set (white)

7 736 701 556 EasyControl TRV set (black)

8 750 000 270 EasyConstrol smart TRV (individual)

Brand	Worcester
Model	GR4700iW C
Category	Boiler
Language	English

Worcester GR4700iW C Installation And Maintenance Instructions

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