26
221138C
1 1 C o m m i s s i o n i n g
11.8 Temperature Settings
The domestic hot water outlet and central heating flow
temperatures are factory preset and sealed, therefore
cannot be adjusted.
The nominal temperature setting for the domestic hot
water outlet is 55
o
C (131
o
F) at a flow rate of 3.6Litre/
min (0.8gall/min).
The nominal maximum flow temperature setting for
central heating is 82
o
C (180
o
F).
11.9 Heating System - Commissioning
Check that all remote controls and integral clock are
calling for heat.
Fully open all radiator valves, flow control valve “A”
and bypass valve “B”, see diagram 4.2.
Set the heating system in operation and balance
the radiators.
Adjust the control valve “A” to achieve the required
system differential temperature between the flow
and return.
Turn off all radiators, then adjust bypass valve “B” to
achieve the same temperature difference between the
boiler flow and return.
Refer to Section 4.6 and diagram 4.1 and 4.1A.
Allow the system to reach maximum temperature then
switch off, isolate the boiler from the electrical supply
and drain the system rapidly whilst still hot.
Fill and vent the system as described in Section 11.2
“Filling the Central Heating Circuit”. Add inhibitor, if
applicable, refer to Section 4.10 “Inhibitor”.
Lower the pressure to the initial cold fill design pressure,
using the external draining tap, close to the boiler, refer
Table 2 and Section 4.11.
Lock or remove the handles from the spindles of flow
control valve “A” and bypass valve “B” to prevent
unauthorised adjustment.
11.10 Completion
The user control door is designed for left or right hand
hinging. If required the hinge can be moved to the other
side to that supplied, as follows:
Remove the hinge pin bracket securing screw then
remove the hinge pin retaining bracket and holding the
door, remove the hinge pin. Prise out the hinge pin
bushes and fit on to the opposite side of the door, see
diagram 11.6.
Remove the screw and nut and fit to the opposite side of
the case. After removing the hinge pin retaining bracket
refit the door and hinge pin. Refit the hinge pin retaining
bracket and fit the securing screw.
Fit the catch assembly, supplied in the loose items pack,
see diagram 11.6.
If required, fit the plastic covers to hide the bracket
securing screws.
Change the position of the “Push” label to suit the new
door opening.
Clock/timer, if fitted, remove the screws, nuts and
washers to release the cover plate, see diagram 11.6.
Stick the casing label to the right hand side of the clock/
timer.
Fit the outer case, secure with the four screws, see
diagram 11.6.
Note: Secure with the two outer screws only if there is
no clock/timer fitted.
Set the boiler and any remote heating control to the
desired settings, then close the door.