3.5 Using the immerSUN with a dual-rate electrical supply
There are 2 common ways that a dual-rate electrical supply can be configured...
1. A single dual-rate meter feeding the whole house
This is the most common configuration.
•
The immerSUN should be wired as normal. See wiring diagrams in section 3.4
•
The immerSUN's Timed Boost should be set to operate at off-peak times.
•
Remove any timers that are installed on the immersion heater circuit.
2. Two meters supplying two consumer units
With this configuration there is a separate timed off-peak supply.
•
Wire the immerSUN as shown in the diagram below.
•
Set the Relay Function to Water Boost and then set the Timed Boost to operate at off-peak
times.
•
Remove any timers that are installed on the immersion heater circuit.
•
Label the immersion heater with a “Dual Supply” warning label.
•
Please Note:
It will not be possible to Boost outside of off-peak times.
13
Dual Rate Supply (with two meters)
IMMERSION HEATER
Max. Load 3kW
(Other loads can be used)
CLAMP
Install onto incoming mains
Live or Neutral cable to building
ISOLATOR
Must be double-pole
240V AC 24hr SUPPLY
From 16A MCB or
13A fused outlet
COMMS LINK
For linking several
ImmerSUN devices
5V GD
A
B
CT CT
COMMS
RELAY
MAINS
NO
C
NC
E
E
N
L
N LH
CLAMP
PWR
240V AC TIMED SUPPLY
From 16A MCB or
13A fused outlet
