Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Introduction
General guidance
2-11
2
2.8.2 Room HVAC sample application template
There is a room HVAC sample application
template for the PCD7.LRxx-P5 room control-
ler, which can be used as a starting point for
the following applications:
The room HVAC application is designed for
Heating
Cooling
Second-stage cooling
CO2 air quality control
Fan
User interaction via wall module
FCU
1 ... 3
MM
1 ... 2 1 ... 2
1 ... 3
VarSpeed
M
T
1 ... 2
Heat
Activated on OAT
Radiation
temp.
(M+S)
Radiator
TR-40 TR-42 Q-RCU-A-To
Wall modules
Heating and cooling can be used for a two-
pipe application with changeover, a four-pipe
application with single valve drives (analogue
or digital PWM) or a six-way valve drive.
Second-stage cooling and CO2 air quality
control handles the proportion of fresh air
via damper and is supplied by a central air
handling unit.
Fan is controlled by heating, cooling and CO2
air quality. Up to three speeds or continuous
speed are supported.
1 ... 2
1
H
H
C
C
M
M
M
1 1
4-pipe
hot water
Cooling
2 or 3-way
switchover
Ceiling
Condensation
(M+S)
M
CO
2
1 1
Pre-treated
cold air
Air
quality
Inlet air
M
C
2
H
4-pipe
Ceiling with
6-way MID valve
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