Lochinvar CHA 100 G CE Installation, Commissioning, User & Maintenance Instructions page 27

is
Flue gas
Mains voltage
thermostat
L1 N
1 2 3 4
3.10.2
3.10.3
3.10.4
Instruction manual CHA
The connector block (C) is now visible.
Comment
Please consult (14 "Electrical diagram")
for details of the connections of the electrical components.
Terminal block
Week timer circuit
N N L
5 6 7 8
Introduction
Topics covered in this paragraph, in sequence:
• Preparations;
• Connecting the mains
• Flue gas discharge safety
• Weekly timer circuit;
• Extra error signal ("Alarm
Connecting the mains power
The water heater is supplied without a power cable and isolator.
Comment
In order to receive electrical power, the water heater has to be connected to
the mains power by means of a permanent electrical connection. A double-pole
isolator with a contact gap of at least 3 mm must be fitted between this
permanent connection and the water heater. The power cable must have cores
2
of at least 3 x 1.0 mm .
Warning
Leave the water heater electrically isolated until you are ready to
commission it.
1. Feed the power cable through the metric strain relief in the top of the control
column.
2. Connect the earth ( ), live (L
terminals 1 to 3 of the connection block according to the table.
3. Tighten the strain relief so that the cable is clamped.
4. If you do not need to make any more connections, then fit the protective
cover back on the control column.
5. Connect the power cable to the isolator.
Flue gas discharge safety device
1. Feed the cable for the weekly timer circuit through the metric strain relief in
the top of the control column.
2. Connect the weekly timer circuit to points 7 (L) and 8 (N) of the connector
block
3. Tighten the strain relief so that the cable is clamped.
4. If you do not need to make any more connections, then fit the protective
cover back on the control column.
the appropriate electrical diagram
Un
used
L L L -
9 10 11 12
power;
device;
OUT")..
) and neutral (N) of the power cable to
1
Potential-free
contact
NO P NC
13 14 15
27