Old baxi boiler

[bikerbas]

Wilst working today i saw an old system baxi boiler so i asked the customer how old it was and she said 30 yr old its a sys boiler with tanks in loft but i noticed it had 5 pipes going to it and a built in pump.Never seen anything like it most old sys boilers only have 2 heating pipes plus the gas.
Does anyone know what the other pipes are for

 

[Billy Bob Bob]

ch flow ch return ,dhw return dhw flow and gas its not a system boiler as such its just on some of the older baxi wall mounts the pump used to get fitted in the case

 

[Puddle]

maybe gravity flow and return to hot water
flow and return to heating
and cold feed from header tank

 

[Toddyplumb]

I remember the old wall mounted cast iron boilers with 4 tappings you had to buy the fittings either blanks or compression connectors depending on what you were doing , all 1" fittings, added a few quid to job. No jig kits then

 

[bikerbas]

cheers for replys