Grant HPiD6 - Page 21

Section 5: Domestic Hot Water Page 21
Figure 5-4: Boost kit wiring diagram
1
A1
Cylinder
Stat
1 2
C
2
23
4 3 4
1
A2
Immersion
Heater Switch
Immersion
Heater
HW Controls
To HW Valve
E
N
L
E
N
L
Red
Earth connections have been excluded for
clarity. Ensure all earth connections are made
prior to energising.
The HW boost pack contains a power relay and
an additional 2-pole isolator and programmable
timer.
NOTE
!
Figure 5-3: Boost kit timeswitch
Day h+
Timer M+
R
MO
TU
WE
TH
FR
SA
SU
TIMER
OFF ON
LCD display
Day button
Timer button
Clock button
Hours adjust button
Minutes adjust button
Override button