Elko TER-9 Manual

- 16 -
T
15-18
25-28
T1
Ts
H1
H2
D
dy2
dy1
dy1
dy2
dy1
dy2
dy1
dy2
dy1
H1
H1
H2
H2
15-18
25-28
T1
T2
Ts
dy1
dy2
H1
H2
D
dy1
dy2
dy1
dy2
dy1
dy2
dy1
dy2
dy1
dy2
H2
H2
H1
H1
T
2-stage thermostat
Thermostat with “WINDOW”
Legend:
Ts - real (measured) temperature T1
D - adjusted di erence
T1 - adjusted temperature T1
T=T1-D
H1 - adjusted hysteresis for T1
H2 - adjusted hysteresis for T2
dy1- set switching delay of the output
dy2 - set delay on output breaking
15-18 output contact
25-28 output contact
Legend:
Ts - real (measured) temperature
T1 - adjusted temperature
T=T1-D
H1 - adjusted hysteresis for T1
H2 - adjusted hysteresis for T2
dy1- set switching delay of the output
dy2 - set delay on output breaking
15-18 output contact
25-28 output contact
- Typical example of use for two-stage thermostat
is e.g in boiler-room, where there are two biolers
from which one is main and the other one is auxi-
liary. The main boiler is managed according to set
temperature and auxiliary boiler is switched in case
temperature falls
under set di erence. Thus it helps to the main
boiler in case outside temperature dramatically
falls. In the range of set di erence (D) output 15-18
functions as normal thermostat to input 1 ( type
1). In case temperature falls under set di erence,
output 2 switches.
- Output is closed (heating) only if temperature is
within adjusted range.If temperature is out of range,
the contact opens. T is set as T1-D.The function is
used for protection of gutters against freezing.

Elko TER-9 Specifications

General

Brand	Elko
Model	TER-9
Category	Thermostat
Language	English