Flue Assembly; Flue Attachment To Boiler - Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing

11 Flue Preparation and Installation
Y
X
X + Y must not exceed
10 metres plus standard
horizontal flue kit.
Reduce flue length by
1 metre for every
additional 90° or pair of 45°
bends.
Fig. 11.4 Elevated horizontal flue

11.3 Flue Assembly

The flue assembly is a push fit design with securing
collars.
Remove all burrs from cut pipes.
Fig. 11.5 shows the components supplied in the standard
kit and the flue adapter.
Having cut the air and flue ducts as described in
sections 11.1- 11.2 assemble the flue as follows, the flue
can be fitted externally or internally.
Fit the rubber sealing collar behind the locating lugs on
the flue terminal, see diagram 11.5. Push the flue
assembly into the wall, externally or internally, initially
until the end of the assembly protrudes a short way
from the inside face of the wall. This will enable the
internal square trim ring to be positioned and allow the
flue duct to be drawn into the flue elbow after the flue
adapter has been fitted.
AIR
DUCT
FLUE
TERMINAL
SEALING
COLLAR
Fig. 11.5
18
EXTENDED HORIZONTAL FLUE
Total flue length must not exceed 10
metres plus standard horizontal flue kit
Reduce flue length by 1 metre for every
additional 90° or pair of 45° bends.
SECURING
COLLAR (70mm)
FLUE
FLUE
DUCT
ELBOW
INTERNAL TRIM
SECURING
RING
COLLAR
(40mm)
FLUE
ADAPTER

11.4 Flue Attachment To Boiler

Lubricate the internal rubber seal of the flue outlet on
the boiler with a suitable lubricant. Push and twist the
flue adapter into position on top of the boiler and secure
with the four screws supplied, making sure the nib fits
into the locating slot in the boiler casing to ensure cor-
rect orientation.
Fit the flue elbow with the securing collar (length
40 mm) on to the flue adapter.
Secure the flue elbow by tightening the two screws on
the securing collar.
Draw flue assembly from wall, fit securing collar (length
70 mm), slide flue duct into flue elbow.
Note!
If the air and flue ducts have been correctly cut
to the instructions given in sections 11.1-11.2 the
rubber sealing collar should fit flush with the
outside wall.
Position securing collar centrally over joint, tighten
securing screws. Drill and insert four self-tapping
screws, supplied, in the holes provided in the securing
collar.
Secure internal trim ring in position with a small amount
of sealant.
Instructions for Use, Installation and Servicing ecoMAX pro