Pipe Connections; Water Connections - Grant Vortex Pro Internal Combi Series Installation And Servicing Instructions

5

pipE COnnECtiOnS

5.1

WatER COnnECtiOnS

Water connections may be from the rear, left or right hand side. If
using low level side exit flue, connections must be on the opposite
side to the flue.
fLOW anD REtURn COnnECtiOnS
All models are supplied with a push-fit elbow connection for the
heating flow and return:
• Combi XS 26, Combi 21 and 26 - 22 mm
• Combi 36 - 28 mm
hOt WatER COnnECtiOnS
All models are supplied with push-fit elbow connections for the
cold water mains inlet pipe and hot water outlet pipe:
• Combi XS 26, Combi 21 and 26 - 15 mm
• Combi 36 - 22 mm
Boiler flow
sensor and
overheat
thermostat
bulb
Heating circulating
pump
Heating flow
connection
Non return
valve
figure 5-1: Vortex Pro Combi pipe positions
page 16
Safety valve Heating
outlet return
Safety valve
Manual Primary return
air vent isolating valve
! CaUtiOn !
All pipes to be fitted into the push-fit connectors provided
should be cut using a pipe slicer or pipe cutter - to leave
the pipe ends with a slight radius and free from any burrs
or sharp edges.
Pipes to be used with these fittings should not be cut
square using a hacksaw.
aLL MODELS
A 15 mm discharge pipe must be connected to the safety valve
outlet connection. The pipework between the safety valve and the
boiler must be unrestricted, that is, no valves. The discharge pipe
should be run to the outside of the building and terminate so that it
cannot cause injury to persons or property.
A drain tap is provided at the bottom on the front of the boiler (and
also on the hot water store on the Vortex Pro Combi).
Automatic air vent
Cold water inlet
Cold water inlet
isolating valve
Flow switch
Automatic
air vents
Section 5: pipe Connections