Main Boiler Manuals – 19 Free PDFs by GC Number

This page brings together Main boiler manuals for the Eco, Medway, Multipoint and Mersey ranges, across natural gas models. It covers combi and system boilers, with more than half of the models linked to a manual we have checked. Search by GC number works well here: most Main GC numbers begin 41-467, 47-467 or 52-476, and the code is on the boiler data badge.

GC	Manual	Model	Type	Energy
32-477-79	Request manual	Main Fireflame BF
41-467-01	View Installation & Servicing: Main System 18HE Main System 18HE Installation & Servicing manual PDF	Main System 18HE		B
41-467-02	View Installation & Servicing: Main System 24HE Main System 24HE Installation & Servicing manual PDF	Main System 24HE	CB	C
41-467-03	View Installation & Servicing: Main System 28HE Main System 28HE Installation & Servicing manual PDF	Main System 28HE	CB	C
41-467-11	View Installation & Servicing: Main System 24 Eco Main System 24 Eco Installation & Servicing manual PDF	Main System 24 Eco	CB	A
41-467-12	View Installation & Servicing: Main System 28 Eco Main System 28 Eco Installation & Servicing manual PDF	Main System 28 Eco	CB	A
41-467-23	View Installation & Servicing: Main 12 Heat ErP Main 12 Heat ErP Installation & Servicing manual PDF	Main 12 Heat ErP	CB	A	download/main-heat-erp-12-15-18-24-installation-servicing-instructions-manual/
41-467-24	View Installation & Servicing: Main 15 Heat ErP Main 15 Heat ErP Installation & Servicing manual PDF	Main 15 Heat ErP	CB	A
41-467-25	View Installation & Servicing: Main 18 Heat ErP Main 18 Heat ErP Installation & Servicing manual PDF	Main 18 Heat ErP	CB	A
41-467-26	View Installation & Servicing: Main 24 Heat ErP Main 24 Heat ErP Installation & Servicing manual PDF	Main 24 Heat ErP	CB	A
41-467-27	View Installation & Servicing: Main 30 Heat ErP Main 30 Heat ErP Installation & Servicing manual PDF	Main 30 Heat ErP	CB	A
41-467-28	View Installation & Servicing: Main Eco Elite 24 System ErP Main Eco Elite 24 System ErP Installation & Servicing manual PDF	Main Eco Elite 24 System ErP	CB	A
41-467-29	View Installation & Servicing: Main Eco Elite 28 System ErP Main Eco Elite 28 System ErP Installation & Servicing manual PDF	Main Eco Elite 28 System ErP	CB	A
41-467-30	View Installation & Servicing: Main Eco Compact System 15 Main Eco Compact System 15 Installation & Servicing manual PDF	Main Eco Compact System 15	CB	A
41-467-31	View Installation & Servicing: Main Eco Compact System 18 Main Eco Compact System 18 Installation & Servicing manual PDF	Main Eco Compact System 18	CB
41-467-40	View Installation & Servicing: Main Eco Compact Heat 15 Main Eco Compact Heat 15 Installation & Servicing manual PDF	Main Eco Compact Heat 15
41-467-41	View Installation & Servicing: Main Eco Compact Heat 18 Main Eco Compact Heat 18 Installation & Servicing manual PDF	Main Eco Compact Heat 18
41-467-42	View Installation & Servicing: Main Eco Compact Heat 24 Main Eco Compact Heat 24 Installation & Servicing manual PDF	Main Eco Compact Heat 24
41-467-43	View Installation & Servicing: Main Eco Compact Heat 30 Main Eco Compact Heat 30 Installation & Servicing manual PDF	Main Eco Compact Heat 30
41-474-01	View Installation & Servicing: Main 9 HE Main 9 HE Installation & Servicing manual PDF	Main 9 HE	CB	C
41-474-02	View Installation & Servicing: Main 12 HE Main 12 HE Installation & Servicing manual PDF	Main 12 HE	CB	C
41-474-03	View Installation & Servicing: Main 15 HE Main 15 HE Installation & Servicing manual PDF	Main 15 HE	CB	C
41-474-04	View Installation & Servicing: Main 18 HE Main 18 HE Installation & Servicing manual PDF	Main 18 HE	CB	C
41-474-05	View Installation & Servicing: Main 24 HE Main 24 HE Installation & Servicing manual PDF	Main 24 HE	CB	C
47-467-01	View Installation & Servicing: Main Combi 25 Eco Main Combi 25 Eco Installation & Servicing manual PDF	Main Combi 25 Eco	CCB Optimise →	A
47-467-03	View Installation & Servicing: Main Combi 30 Eco Main Combi 30 Eco Installation & Servicing manual PDF	Main Combi 30 Eco	CCB Optimise →	A
47-467-08	View Installation & Servicing: Main Eco Elite 25 Combi Main Eco Elite 25 Combi Installation & Servicing manual PDF	Main Eco Elite 25 Combi	CCB Optimise →
47-467-09	View Installation & Servicing: Main Eco Elite 30 Combi Main Eco Elite 30 Combi Installation & Servicing manual PDF	Main Eco Elite 30 Combi	CCB Optimise →
47-467-12	View Installation & Servicing: Main Eco Elite 25 Combi ErP Main Eco Elite 25 Combi ErP Installation & Servicing manual PDF	Main Eco Elite 25 Combi ErP	CCB Optimise →	A
47-467-13	View Installation & Servicing: Main Eco Elite 30 Combi ErP Main Eco Elite 30 Combi ErP Installation & Servicing manual PDF	Main Eco Elite 30 Combi ErP	CCB Optimise →	A
47-467-14	View Installation & Servicing: Main Eco Compact Combi 25 Main Eco Compact Combi 25 Installation & Servicing manual PDF	Main Eco Compact Combi 25	CCB Optimise →	A
47-467-15	View Installation & Servicing: Main Eco Compact Combi 30 Main Eco Compact Combi 30 Installation & Servicing manual PDF	Main Eco Compact Combi 30	CCB Optimise →	A
47-474-01	View Installation & Servicing: Main Combi 24 Main Combi 24 Installation & Servicing manual PDF	Main Combi 24		D
47-474-02	View Installation & Servicing: Main Combi 24 HE Main Combi 24 HE Installation & Servicing manual PDF	Main Combi 24 HE	CCB Optimise →	C
47-474-03	View Installation & Servicing: Main Combi 30 HE Main Combi 30 HE Installation & Servicing manual PDF	Main Combi 30 HE	CCB Optimise →	C
51-476-33	View Installation & Servicing: Main Mitre AS Main Mitre AS Installation & Servicing manual PDF	Main Mitre AS
52-467-01	View Installation, Servicing & User: Main Multipoint BF Main Multipoint BF Installation, Servicing & User manual PDF	Main Multipoint BF
52-467-02	View Installation, Servicing & User: Main Multipoint FF Main Multipoint FF Installation, Servicing & User manual PDF	Main Multipoint FF
52-476-24	Request manual	Main Avon Thermostatic
52-476-25	Request manual	Main Medway Automatic
52-476-26	Request manual	Main Mersey
52-476-30	Request manual	Main Trent Thermo (Later Production)
52-476-38	View Installation & Servicing: Main Mersey Super Main Mersey Super Installation & Servicing manual PDF	Main Mersey Super
52-476-39	View Installation & Servicing: Main Medway Super Main Medway Super Installation & Servicing manual PDF	Main Medway Super
52-476-40	View Installation & Servicing: Main Thames Main Thames Installation & Servicing manual PDF	Main Thames
52-476-41	View Installation & Servicing: Main Medway Super (When fitted with Low Pressure Throttle Kit Main Medway Super (When fitted with Low Pressure Throttle Kit Installation & Servicing manual PDF	Main Medway Super (When fitted with Low Pressure Throttle Kit
53-476-20	Request manual	Main Solent 671
41-467-16	View Installation & Servicing: Main 12 HE A Main 12 HE A Installation & Servicing manual PDF	Main 12 HE A	CB	A
41-467-17	View Installation & Servicing: Main 15 HE A Main 15 HE A Installation & Servicing manual PDF	Main 15 HE A	CB	A
41-467-18	View Installation & Servicing: Main 18 HE A Main 18 HE A Installation & Servicing manual PDF	Main 18 HE A	CB	A
41-467-19	View Installation & Servicing: Main 24 HE A Main 24 HE A Installation & Servicing manual PDF	Main 24 HE A	CB	A
41-467-20	View Installation & Servicing: Main 30 HE A Main 30 HE A Installation & Servicing manual PDF	Main 30 HE A	CB	A
47-467-10	Request manual	Main Combi Eco Classic 24, GC 47-467-10, Natural Gas
47-467-11	Request manual	Main Combi Eco Classic 30, GC 47-467-11, Natural Gas
47-467-31	Request manual	Main ECO COMPACT 18 SYSTEM, GC 47-467-31, Natural Gas		A
41-467-04	Request manual	Main System 18 HE, GC 41-467-04, Natural Gas
41-467-21	Request manual	Main System Eco Elite 24, GC 41-467-21, Natural Gas
41-467-22	Request manual	Main System Eco Elite 28, GC 41-467-22, Natural Gas

Manual

Model

Type

Energy

32-477-79

Request manual

Main Fireflame BF

41-467-01

View Installation & Servicing: Main System 18HE Main System 18HE Installation & Servicing manual PDF

Main System 18HE

41-467-02

View Installation & Servicing: Main System 24HE Main System 24HE Installation & Servicing manual PDF

Main System 24HE

41-467-03

View Installation & Servicing: Main System 28HE Main System 28HE Installation & Servicing manual PDF

Main System 28HE

41-467-11

View Installation & Servicing: Main System 24 Eco Main System 24 Eco Installation & Servicing manual PDF

Main System 24 Eco

41-467-12

View Installation & Servicing: Main System 28 Eco Main System 28 Eco Installation & Servicing manual PDF

Main System 28 Eco

41-467-23

View Installation & Servicing: Main 12 Heat ErP Main 12 Heat ErP Installation & Servicing manual PDF

Main 12 Heat ErP

download/main-heat-erp-12-15-18-24-installation-servicing-instructions-manual/

41-467-24

View Installation & Servicing: Main 15 Heat ErP Main 15 Heat ErP Installation & Servicing manual PDF

Main 15 Heat ErP

41-467-25

View Installation & Servicing: Main 18 Heat ErP Main 18 Heat ErP Installation & Servicing manual PDF

Main 18 Heat ErP

41-467-26

View Installation & Servicing: Main 24 Heat ErP Main 24 Heat ErP Installation & Servicing manual PDF

Main 24 Heat ErP

41-467-27

View Installation & Servicing: Main 30 Heat ErP Main 30 Heat ErP Installation & Servicing manual PDF

Main 30 Heat ErP

41-467-28

View Installation & Servicing: Main Eco Elite 24 System ErP Main Eco Elite 24 System ErP Installation & Servicing manual PDF

Main Eco Elite 24 System ErP

41-467-29

View Installation & Servicing: Main Eco Elite 28 System ErP Main Eco Elite 28 System ErP Installation & Servicing manual PDF

Main Eco Elite 28 System ErP

41-467-30

View Installation & Servicing: Main Eco Compact System 15 Main Eco Compact System 15 Installation & Servicing manual PDF

Main Eco Compact System 15

41-467-31

View Installation & Servicing: Main Eco Compact System 18 Main Eco Compact System 18 Installation & Servicing manual PDF

Main Eco Compact System 18

41-467-40

View Installation & Servicing: Main Eco Compact Heat 15 Main Eco Compact Heat 15 Installation & Servicing manual PDF

Main Eco Compact Heat 15

41-467-41

View Installation & Servicing: Main Eco Compact Heat 18 Main Eco Compact Heat 18 Installation & Servicing manual PDF

Main Eco Compact Heat 18

41-467-42

View Installation & Servicing: Main Eco Compact Heat 24 Main Eco Compact Heat 24 Installation & Servicing manual PDF

Main Eco Compact Heat 24

41-467-43

View Installation & Servicing: Main Eco Compact Heat 30 Main Eco Compact Heat 30 Installation & Servicing manual PDF

Main Eco Compact Heat 30

41-474-01

View Installation & Servicing: Main 9 HE Main 9 HE Installation & Servicing manual PDF

Main 9 HE

41-474-02

View Installation & Servicing: Main 12 HE Main 12 HE Installation & Servicing manual PDF

Main 12 HE

41-474-03

View Installation & Servicing: Main 15 HE Main 15 HE Installation & Servicing manual PDF

Main 15 HE

41-474-04

View Installation & Servicing: Main 18 HE Main 18 HE Installation & Servicing manual PDF

Main 18 HE

41-474-05

View Installation & Servicing: Main 24 HE Main 24 HE Installation & Servicing manual PDF

Main 24 HE

47-467-01

View Installation & Servicing: Main Combi 25 Eco Main Combi 25 Eco Installation & Servicing manual PDF

Main Combi 25 Eco

CCB Optimise →

47-467-03

View Installation & Servicing: Main Combi 30 Eco Main Combi 30 Eco Installation & Servicing manual PDF

Main Combi 30 Eco

CCB Optimise →

47-467-08

View Installation & Servicing: Main Eco Elite 25 Combi Main Eco Elite 25 Combi Installation & Servicing manual PDF

Main Eco Elite 25 Combi

CCB Optimise →

47-467-09

View Installation & Servicing: Main Eco Elite 30 Combi Main Eco Elite 30 Combi Installation & Servicing manual PDF

Main Eco Elite 30 Combi

CCB Optimise →

47-467-12

View Installation & Servicing: Main Eco Elite 25 Combi ErP Main Eco Elite 25 Combi ErP Installation & Servicing manual PDF

Main Eco Elite 25 Combi ErP

CCB Optimise →

47-467-13

View Installation & Servicing: Main Eco Elite 30 Combi ErP Main Eco Elite 30 Combi ErP Installation & Servicing manual PDF

Main Eco Elite 30 Combi ErP

CCB Optimise →

47-467-14

View Installation & Servicing: Main Eco Compact Combi 25 Main Eco Compact Combi 25 Installation & Servicing manual PDF

Main Eco Compact Combi 25

CCB Optimise →

47-467-15

View Installation & Servicing: Main Eco Compact Combi 30 Main Eco Compact Combi 30 Installation & Servicing manual PDF

Main Eco Compact Combi 30

CCB Optimise →

47-474-01

View Installation & Servicing: Main Combi 24 Main Combi 24 Installation & Servicing manual PDF

Main Combi 24

47-474-02

View Installation & Servicing: Main Combi 24 HE Main Combi 24 HE Installation & Servicing manual PDF

Main Combi 24 HE

CCB Optimise →

47-474-03

View Installation & Servicing: Main Combi 30 HE Main Combi 30 HE Installation & Servicing manual PDF

Main Combi 30 HE

CCB Optimise →

51-476-33

View Installation & Servicing: Main Mitre AS Main Mitre AS Installation & Servicing manual PDF

Main Mitre AS

52-467-01

View Installation, Servicing & User: Main Multipoint BF Main Multipoint BF Installation, Servicing & User manual PDF

Main Multipoint BF

52-467-02

View Installation, Servicing & User: Main Multipoint FF Main Multipoint FF Installation, Servicing & User manual PDF

Main Multipoint FF

52-476-24

Request manual

Main Avon Thermostatic

52-476-25

Request manual

Main Medway Automatic

52-476-26

Request manual

Main Mersey

52-476-30

Request manual

Main Trent Thermo (Later Production)

52-476-38

View Installation & Servicing: Main Mersey Super Main Mersey Super Installation & Servicing manual PDF

Main Mersey Super

52-476-39

View Installation & Servicing: Main Medway Super Main Medway Super Installation & Servicing manual PDF

Main Medway Super

52-476-40

View Installation & Servicing: Main Thames Main Thames Installation & Servicing manual PDF

Main Thames

52-476-41

View Installation & Servicing: Main Medway Super (When fitted with Low Pressure Throttle Kit Main Medway Super (When fitted with Low Pressure Throttle Kit Installation & Servicing manual PDF

Main Medway Super (When fitted with Low Pressure Throttle Kit

53-476-20

Request manual

Main Solent 671

41-467-16

View Installation & Servicing: Main 12 HE A Main 12 HE A Installation & Servicing manual PDF

Main 12 HE A

41-467-17

View Installation & Servicing: Main 15 HE A Main 15 HE A Installation & Servicing manual PDF

Main 15 HE A

41-467-18

View Installation & Servicing: Main 18 HE A Main 18 HE A Installation & Servicing manual PDF

Main 18 HE A

41-467-19

View Installation & Servicing: Main 24 HE A Main 24 HE A Installation & Servicing manual PDF

Main 24 HE A

41-467-20

View Installation & Servicing: Main 30 HE A Main 30 HE A Installation & Servicing manual PDF

Main 30 HE A

47-467-10

Request manual

Main Combi Eco Classic 24, GC 47-467-10, Natural Gas

47-467-11

Request manual

Main Combi Eco Classic 30, GC 47-467-11, Natural Gas

47-467-31

Request manual

Main ECO COMPACT 18 SYSTEM, GC 47-467-31, Natural Gas

41-467-04

Request manual

Main System 18 HE, GC 41-467-04, Natural Gas

41-467-21

Request manual

Main System Eco Elite 24, GC 41-467-21, Natural Gas

41-467-22

Request manual

Main System Eco Elite 28, GC 41-467-22, Natural Gas

Key: Condensing combi boiler Condensing boiler (system or regular) Free Boiler Optimiser to help cut gas use on a condensing combi Energy: ErP class where published, otherwise efficiency band from SAP seasonal efficiency (SEDBUK 2009 scale)

We list 58 Main boiler models (natural gas). 46 of them link to one of 19 checked installation, servicing or user manuals (PDF) hosted on BoilerManuals.com. Last checked 17 October 2026.