Room Thermostat Connection; Boiler/Space Heater Pump Connection; Boiler Sensor Connection; Installation Of The Boiler Sensor - Viessmann VITOTRONIC 100 Installation, Start-Up And Service Instructions Manual

Electrical Connections

Room Thermostat Connection

1st stage terminal 1 & 2
2nd stage terminal 2 & 3
Note: the control board viewed from the rear/top.
Boiler/Space Heating Pump Connection
A Boiler pump connection
Note: the control board viewed from the rear/top.

Boiler Sensor Connection

A Boiler sensor connection
Note: the control board viewed from the rear/top.
14
Vitotronic 100, KW10B Installation, Start-up and Service
A room thermostat or end-switches from zone valves
(in multi-zone systems) can be connected to the room
thermostat connection. Connection must be potential-free
("dry contact").
1. Feed the cabling from the room thermostat through
rear top panel wiring gate of the boiler. Use 2
conductor AWG 18 copper wire only.
2. Slide cable into the strain relief and secure with strain
relief set screw.
3. Connect wires to main circuit board as shown.
4. Set thermostat anticipator to 0.1 A.
Note: Regardless of the programmed control functionality
with respect to the dip and rotary switches, the TT
function will always have the ability to call on the
1st and/or 2nd stage.
The Vitotronic 100, KW10B incorporates a 120 VAC
pump output with a maximum full load of 3A. The
operation of the boiler pump is a function of a number
of factors based on the control's DIP switch settings,
such as operation based on boiler temperature or based
on thermostat terminal demands. Refer to the DIP switch
setting information on page 23.
This is also used to minimize the possibility of flue gas
condensation with the following boilers:
- Vitorond 100, VR1 Series
- Vitogas 050, RS Series
- Vitogas 100, GS1 Series
See Installation Instructions for the
Pump Junction Box
(junction box not required for KW10B control)
The Vitola 200 boiler has no low limit.

Installation of the boiler sensor

1. Insert the boiler sensor into the boiler sensor well.
DO NOT kink any of the surrounding capillaries.
2. Route cabling to boiler control between enclosure
panels and insulation jacket.
Electrical connections
3. Connect the boiler sensor wires to connector X6
terminal 3.1 and 3.2, A as shown.
Refer to the specific boiler installation manual
for boiler sensor installation.