Supplied By www.heating spares.co Tel. 0161 620 6677
51
52
9.23
DRAINING THE APPLIANCE
Refer to Figures 18, 42 & 52
a)
Before draining, give the appliance a brief CH demand, to
ensure the diverter valve is in the CH position.
b)
Ensure supply voltage is isolated.
c)
If not draining the entire CH system, close the CH flow and CH
return water isolating cocks.
d)
Close the DHW return water-isolating cock.
e)
Drain down the CH system from the external drain point, and
drain the boiler using the manual drain tap on the CH flow water
isolating cock (figure 18), in conjunction with the manual bleed
valve located on the top LHS of the heat exchanger; refer to Figures
44 and 54.
f)
Where the DHW circuit is to be worked on, close the DHW inlet
isolating cock, open a DHW tap at the lowest point in the system
and allow the pressure to dissipate. Close this tap again.
24HR TIME CLOCK
230Vac CLOCK MOTOR
2 BROWN CABLES
2 BLUE CABLES
RED CABLE
RED CABLE
N/O CONTACTS
DRAIN POINT
DRAIN TUBE
40
751094 ACE HE INST MANUAL:751094 ACE HE 28/9/10 09:46 Page 42
