Bosch GC 7000 WP, Quick Reference Manual

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Whilst it is always our intention to fully assist, it is essential to recognise that all information given by the company in response to an enquiry of any nature is provided in good faith and based
upon the information provided with the enquiry. We recommend that advice should always be checked with your installer or contract partner. Consequently, the company cannot be held
responsible for any liability relating to the use or repetition of such information or part thereof. In addition, whilst making every reasonable effort to monitor the performance and quality of
our supply, installation and service network, we do not accept responsibility for the workmanship or operation of any third party company that the company may have promoted either in
conversation, e-mail, or other communication. Similarly, the views and opinions expressed in communication with individuals within the company may not reflect that of the business as a whole.
You can find this, and all issued technical bulletins on the Worcester website at:
worcester-bosch.co.uk/tb
or
worcester-bosch.ie/tb
15
Worcester, Bosch Group, Cotswold Way, Warndon, Worcester WR4 9SW Technical Services: 0330 123 3366 | technical-advice@uk.bosch.com
Bosch Flue and Ventilation Quick Reference Guide 2022
U and 5U (uncorrected chimney height) for boilers in cascade
Boiler Combinations
kW input
U (m)
5U (m)
2 x GC 7000 WP 50kW 95 0.370 1.85
3 x GC 7000 WP 50kW 142.5 0.472 2.36
4 x GC 7000 WP 50kW 190 0.561 2.81
5 x GC 7000 WP 50kW 237.5 0.642 3.21
6 x GC 7000 WP 50kW 285 0.716 3.58
2 x GC 7000 WP 65kW 128.6 0.444 2.22
3 x GC 7000 WP 65kW 192.9 0.566 2.83
4 x GC 7000 WP 65kW 257.2 0.673 3.37
5 x GC 7000 WP 65kW 321.5 0.769 3.85
6 x GC 7000 WP 65kW 385.8 0.858 4.29
1 x GC 7000 WP 85kW 82 0.339 1.69
2 x GC 7000 WP 85kW 164 0.514 2.57
3 x GC 7000 WP 85kW 246 0.655 3.28
4 x GC 7000 WP 85kW 328 0.779 3.89
5 x GC 7000 WP 85kW 410 0.890 4.45
6 x GC 7000 WP 85kW 492 0.993 4.97
1 x GC 7000 WP 100kW 96.5 0.374 1.87
2 x GC 7000 WP 100kW 193 0.567 2.84
3 x GC 7000 WP 100kW 289.5 0.723 3.62
4 x GC 7000 WP 100kW 386 0.859 4.30
5 x GC 7000 WP 100kW 482.5 0.982 4.91
6 x GC 7000 WP 100kW 579 1.095 5.48
1 x GC 7000 WP 125kW 118.1 0.422 2.11
2 x GC 7000 WP 125kW 236.2 0.639 3.20
3 x GC 7000 WP 125kW 354.3 0.816 4.08
4 x GC 7000 WP 125kW 472.4 0.969 4.85
5 x GC 7000 WP 125kW 590.5 1.108 5.54
6 x GC 7000 WP 125kW 708.6 1.236 6.18
1 x GC 7000 WP 145kW 140.1 0.467 2.34
2 x GC 7000 WP 145kW 280.2 0.709 3.54
3 x GC 7000 WP 145kW 420.3 0.904 4.52
4 x GC 7000 WP 145kW 560.4 1.074 5.37
5 x GC 7000 WP 145kW 700.5 1.228 6.14
6 x GC 7000 WP 145kW 840.6 1.370 6.85
CO Detection for cascade flues systems
Bosch has taken the decision to require the mandatory use of CO detection for boiler systems using a cascade flue system where there is
more than one appliance. CO detection must result in a boiler shut off and prevent CO exposure.
With our GC 7000 WP range, all Bosch Cascade base flue kits contain a CO detector for on-site wiring into our CC8313 controller or
MC400 Cascade controller, where these controllers are not used due to controls from a BMS system it is still a requirement that the BMS
has some form of CO detection thus activating a boiler shut off. The detection threshold level should be no higher than 50ppm.
Failure to fit a form of CO detection to a Cascade will result in a failed commissioning.
For more information on CO detection please see technical bulletin: TB 0164 a (07/2022)
Please refer to manufacturer’s instructions for more information on flue requirements.