Cannon Coalridge Gas Fire with coal effect, for use with natural gas. Grey Weight:- 42.7 kg Complete with user booklet & servicing instructions.Order your spare parts for the Cannon Coalridge Bf Mk2 Grey 20075G online at Direct Heatings Spares. 2051668 Cannon C00221414 Manual. Question - Cannon Coalridge bf Model No 926621. The service manual a replacement thermalcouple can be sourced by your gas engineer, you will need a gas Coleridge balanced-flue gas fire ; Cannon - Cookers ; Coalridge BF - Brown, 32 132 76 ; Coalridge BF - Grey, 32 132 61.