System air Topvex RB-CEM15 User manual

Document in original language | 134351 · A003
Pre-heater
Topvex counterflow units
Installation instructions GB

134351 | A003

134351 | A003
Contents
1 Warnings.......................................................1
2 General.........................................................1
3 Installation.....................................................1
3.1 Outdoor air sensor..................................1
3.2 Wiring diagram ......................................2
3.3 Corrigo.................................................3

Warnings |1
1 Warnings
Danger
• Make sure that the mains supply to the unit is disconnected before performing any maintenance or
electrical work!
• All electrical connections must be carried out by an authorized installer and in accordance with local rules
and regulations.
2 General
A a pre-heater is available as an accessory for Systemair Topvex units with counterflow heat exchanger. A pre-heater
can be installed in the outdoor duct to prevent icing in the heat exchanger.
The kit contains of 1 expansion module, 1 pre-heater, 1 outdoor air sensor and 1 instruction.
3 Installation
3.1 Outdoor air sensor
Mount the enclosed outdoor air sensor to the outdoor air duct (OS in figure 1) before the pre-heater and assign it as an
outdoor air sensor in Corrigo (see chapter 3.3). Configure the previous installed outdoor air sensor located in the unit to
Extra unit temp.
Replace the existing OS-label inside the air handling unit with the new EUT-label. Attach the new OS-label next to the
added outdoor sensor.
EUT
OS
EF SF
HE
PH
Fig. 1
Outdoor air
Supply air
Extract air
Exhaust air
OS Outdoor air sensor
PH Pre-heater
EUT Extra unit temp
EF Extract air fan
SF Supply air fan
HE Heat exchanger
134351 | A003

2| Installation
3.2 Wiring diagram
OS
UC
B60
A61
Corrigo
N62
E63
BU
OR
GN
BN
BU
CEM15
G G0
90
8
9
10
11
12
13
14
91
4
71
30
31
PE
L3
L2
L1
N
PE
L3
L2
L1
N
400V 3N~
CB 250-90-3-MQXL
CB 315-90-3-MQXL
CB 400-120-3-MQXL
*
Fig. 2 Wiring CB-CEM15
OS
UC
Corrigo
B60
A61
N62
E63
BU
BU
OR
GN
BN
G G0
CEM15
4
71
90
91
30
31
1
2
3
4
G0
Y
PE
L3
L2
L1
PE
L3
L2
L1
7
8
N
400V 3N~
RB 50-25-12-MQXL
RB 50-30-17-MQXL
RB 60-30-17-MQXL
RB 60-40-21-MQXL
RB 60-50-27-MQXL
*
Fig. 3 Wiring RB-CEM15
* See chapter 3.1
BU Blue
OR Orange
GN Green
BN Brown
134351 | A003

Installation | 3
3.3 Corrigo
Function via expansion unit.
Log on with admin rights in Corrigo.
Main menu item Sub-menu item 1 Sub-menu item 2 Explanations
→Access rights →Log on Log on
Enter password xxxx
Actual level: None
Log on to service level by entering
a 4-digit code. After reaching the
desired level go back with “LEFT”
arrow (press 2 times) on the control
panel.
Standard code from factory to enter
service level is 2222. Back to
operator level: 1111. To enter
Admin level code: 3333.
→Configuration →Communication Function port2
Exp and ext display
→Corrigo E15
→Input/Output →AI AI3:
Extra unit temp
Raw value: NaN
Compensation:0.0°C
→AI exp1 AI1 Exp1:
Sign: Outd temp
Raw value: 0.0
Compensation:0.0°C
→DI exp 1 DI1 Exp1:
NO/NC: NC Signal:
Ext alarm1
Status:Off
Overheat pre-heater is
presented in the display when the
alarm is active.
→AO exp1 AO1 Exp1:
Sign:Extra unit
Auto
Value:0,0 V
Control signal for heater 0-10V
→DO exp1 DO1 Exp1:
Sign:ExtraUnitActi
Auto
Status:Off
Activated during defrosting
sequence.
→Extra control
unit
Mode extra unit
Run if defrosting
Activated during defrosting
sequence.
See Example 1.
Mode extra unit
Run if units us
running
Activated during normal run.
See Example 2.
Option: Running if unit is
running is to avoid defrosting if
unbalanced airflow is not permitted.
Control mode extra
unit
Heating
→Settings →Control extra
unit
Control extra unit
P-band:33.0°C
I-time: 100.0 s
Set P-band and I-time for Control
extra unit.
→Temperature Extra unit
Actual: NaN °C
Setp: 18.0°C
Set the pre-heater temperature
134351 | A003

4| Installation
Example 1:Run if defrosting. If pre-heater is used in order to maintain supply temperature at desired level.
For example, desired supply temperature is +20°, the outside air is -4° and the heater has an capacity of 10°. This is
enough during normal operation on these units but during bypass defrosting the heater needs an capacity of 24°. This
is a lack of 14°.
In this example a set point for the pre-heater needs to be +10°. Set point must be chosen according to heat capacity
and airflow.
Example 2: Run if units is running. In this case you need to have a set point at 0°.
Pre-heater will be active below 0° during normal operation. To use this option configuration must be changed.
Same extra sensor as above is used.
It can also be used for a unit in a very cold location when heating capacity isn’t enough. For example -30°. Set point de-
pending of heat capacity and airflow. In this case a set point can be, for example -18°.
134351 | A003

134351 | A003

Pre-heater · Installation instructions · 134351 · en_GB · 04-08-2017 · A003
Systemair Sverige AB
Industrivägen 3
SE-739 30 Skinnskatteberg, Sweden
Phone [phone]
Fax [phone]
www.systemair.com