![Uponor SETPOINT 511S Скачать руководство пользователя страница 8](http://html1.mh-extra.com/html/uponor/setpoint-511s/setpoint-511s_installation-and-operation-manual_1060935008.webp)
Mode
Heat
In the heat mode, the Heat relay satisfies the temperature requirement of
the zone.
Off
The Heat relay does not operate in the Off mode.
Note:
If an air, slab or floor sensor is active in the Off mode, a freeze-
protection function enables, allowing the Heat relay to operate
and keep the zone above 35°F (2°C).
Sequence of Operation for the SetPoint 512
(Two-stage Heat) Controller
Select the two-stage mode of operation by using the DIP switch located on
the circuit board inside the SetPoint 512.
In cases where a one-stage heating system cannot provide sufficient heat
under all conditions, a second stage of heat is added to supplement the
first stage. Therefore, a two-stage system has one unit controlling two
output relays.
Two-stage Logic
The temperature in a two-stage
zone is controlled by varying the on
time of the Heat 1 and Heat 2 relays
during a cycle. Under light loads, the
Heat 1 relay is cycled on and off. As
the load increases, the Heat 1 relay
on time increases until it reaches the
maximum of the cycle length. If using a slab or floor sensor, the Heat 1
relay on time increases until the temperature reaches the slab or floor
maximum setting. The Heat 2 relay is then cycled, and the on time increases
as the load increases. When the heating load decreases, the on time of
the Heat 2 relay reduces until the Heat 2 relay turns off completely. The
controller then reduces the on time of the Heat 1 relay. (See
Figure 13
.)
Note:
When using a slab or floor sensor, the Heat 2 relay may be on while
the Heat 1 relay is off if the slab or floor temperature has reached
the slab maximum setting.
11
Section 2 — Installation
Access Levels
The SetPoint controllers feature two access
levels — User and Installer — which restrict the
number of items available in the display menus.
Change the access level via the DIP switch
located on the circuit board inside the controller.
(See
Figure 12
.)
The Installer access level allows the installer to
adjust all the settings in the controller including
those required to match the controller to the
mechanical system and devices. The User access level allows the end user
to adjust the time, temperatures and schedules.
Note:
The SetPoint 512 features an additional DIP switch for selecting
between the two-stage heating or cooling modes.
Sequence of Operation for the SetPoint 511s
Air Sensor Only Operation
When operating with only an air sensor, the on time for the Heat relay is
calculated to satisfy the requirements of the air sensor.
Slab or Floor Sensor Only Operation
When operating with only a slab or floor sensor, the on time for the
Heat relay is calculated to satisfy the requirements of the slab or floor
sensor. The controller operates to maintain the slab at the minimum slab
temperature setting.
Note:
Using only a slab or floor sensor may cause overheating or
underheating of the space.
Air and Slab or Floor Sensor Operation
When operating with both air and slab or floor sensors, the controller
calculates an on time for the Heat relay to satisfy the slab or floor sensor’s
requirements and an on time to satisfy the air sensor’s requirements. The
Heat relay operates for the longer of these two on times.
During light heating loads, overheating can occur due to the minimum
slab or floor temperature requirements.
During heavy heating loads, the maximum slab or floor temperature
setting limits the on time of the Heat relay. In this situation, underheating
can occur.
10
50
1s
Figure 12:
DIP Switch Location
Figure 13: Two-stage Logic
Содержание SETPOINT 511S
Страница 16: ...Notes 26...