Swegon BLB d, BLB 100, BLB 125, BLB 160, BLB 200, BLB 250, BLB 315, BLB 400, BLB 0, BLB 1 Mixing Box Instruction Manual

BLBd
Installation – Commissioning – Maintenance
20140912
Maintenance
The mixing box is equipped with an inspection cover
made of plexiglas. The motor is coupled to the mixing
box damper blade via connecting rods and a spindle
that extends into the mixing box through a brass bush.
The inspection cover can be dismantled, as required. It is
advisable to switch off the ventilation before you dismantle the inspection cover.
Check the linkage system between the motor and the
damper blade. Make sure that all the parts are in place
and that screws have not come loose.
The spindle and the brass bush should be checked at
regular intervals. Make sure that the spindle runs easily
through the brass bush. Whenever the need arises the
spindle should be cleaned with appropriate degreasing
agent; then it should be oiled with a thin oil film and
wiped dry of any excess oil.
4
The respective service function staff must determine the
time interval for inspection. This depends on how clean
the supply air is and how the ambient environment looks.
We recommend inspection at least once a year.
We recommend lubricating the spindle with a foodstuffclassified penetrating maintenance oil, such as Omega
638 food grade 4.
1
2
3
RTC
BLB
REACT
Figure 1. Description of the function of the BLB for an electric
control system in combination with the REACT and RTC.
Figure 2.
1. Brass bush
2. Spindle
3. Connecting rods
4. Plexiglas
1
BLB
Electric actuator control signals
The diagram below shows the mixing damper blade position in relation to the control signal, electric. 100% denotes
full cooling. 0% denotes full heating. For the best control,
the room thermostat should be set for mixing box control,
i.e. have its neutral position at 5V. On the RTC, this function can be selected using the LUNA T-CU hand-held terminal.  See the commissioning instructions for the RTC.
Dimensions and weights
Size
Dimensions (mm)
A
B
C1
100
210
260
139
99
125
210
310
139
124
160
210
385
139
159
200
250
450
139
250
300
550
315
365
660
400
450
830
Size
ød
D
E
F
V
198
79
60
30
232
94
60
30
284
115
60
30
199
338
136
60
30
139
249
406
161
60
30
271
314
498
194
60
30
271
399
612
239
60
30
Weight (kg)
BLB-0 / BLB-1
100
4,9
125
5,5
160
7,0
200
8,4
250
11,3
315
18,0
400
25,0
Wiring diagram for electric damper actuator
Connect the control signal from the room thermostat to
input Y (wire marked 3). Output U is a true value signal.
Design power consumption: 5 VA, applies to BLB motor
and RTC.
Figure 3. Wiring diagram, BLB with electric motor.
2
Swegon reserves the right to alter specifications.
Figure 4. Dimensions, BLB.
20140912
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