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BACNET™ MOTORIZED VAV DIFFUSER
INSTALLATION INSTRUCTIONS
Damaged Freight Claim Procedure
When the diffusers are received, inspect for damage, which
may have occurred during shipment. If damage is evident, it
should be noted on the carrier's freight bill. A written request
for inspection by the carrier's agent should be made at once.
Storage
Cartons should always be stacked on end with the arrows
on the cartons pointing up. Do not stack cartons flat on the
sides. Excessive weight may cause damage to the diffusers.
Do not store for prolonged times at temperatures exceeding
130˚F/56˚C. Acceptable humidity level 5-95% relative humidity
noncondensing.
Identification
Models are factory shipped one per carton. The model
designation is on the diffuser and on the carton.
Installation Precautions
When installing diffusers make sure construction debris does not enter the diffuser or duct system. Because the EF-B controls
room temperature by sensing the air induced up the center of the room, care should be taken not to disturb room air induction and
entrainment. For example, location next to walls or dropped lights results in the reflection of supply air back at the Therma-Fuser
diffuser and should be avoided. A three way blow Therma-Fuser diffuser should be used in this instance if either the light or the
Therma-Fuser diffuser cannot be relocated.
Power Requirements
24 +3/-1VAC 10VA max.
Installation
1.
Inspect the carton for damage before opening. Notify carrier if external damage exists. Submit all claims for shipping damage
to the carrier.
2.
Move diffusers (in cartons) to installation area. Note unit identification.
3.
Remove cardboard box and cardboard insert. Recycle packing material.
4.
If other than 4 way blow pattern is installed note the "AIRFLOW" markings on the top of the diffuser and locate those sides in
the proper direction.
5.
Install in ceiling grid. Install T-bar support wire close to each corner of diffuser. Make sure that only wire suspended T-bars are
used to support diffuser weight. Follow all local codes for seismic restraints. (Adaptor frames are available for other than lay in
ceilings.)
6.
Connect and secure the supply duct to the collar. Flexible duct should NOT be formed in a centerline radius of less than 1½
times the duct diameter.
7.
Connect shielded twisted pair network wiring to the screw terminals labeled (+) and (-) and connect the drain wire to COM
(see Fig. 7 Wiring Diagram). All network wiring should be to ASHRAE Standard 135 and EIA-485.
8.
Connect 24 VAC power to the screw terminal labeled 24VAC (POWER IN) (see Fig. 5 Wiring Diagram).
9.
Commission all EF-B diffusers (see BACnet Object List Form 091.202).
10. Balance the system (see System Air Balancing below).
EF-B-M
BACnet™ MOTORIZED VAV DIFFUSER
INSTALLATION, OPERATION AND MAINTENANCE
Models:
EF-B-M BACnet Interoperable Motorized
Square VAV Diffuser
CONTENTS
CONTENTS ............................................................................ 1
DAMAGED FREIGHT CLAIM PROCEDURES ..................... 1
STORAGE ............................................................................... 1
IDENTIFICATION ................................................................... 1
INSTALLATION PRECAUTIONS .......................................... 1
POWER REQUIREMENTS ..................................................... 1
INSTALLATION ...................................................................... 1
COMMISSIONING ................................................................ 2
POWER FAILURE ................................................................... 2
AIR DENSITY COMPENSATION ......................................... 2
SYSTEM AIR BALANCING ................................................... 2
TROUBLESHOOTING ............................................................ 2
System ................................................................................ 3
Conditions Outside the EF-B .......................................... 3
EF-B Properties ................................................................. 3
EF-B Electrical .................................................................... 4
MAINTENANCE ..................................................................... 4
CONTROLLING THE SYSTEM ............................................. 4
Supply Air Temperature .................................................. 5
Static Pressure ................................................................... 5
TWO YEAR WARRANTY ...................................................... 6
DAMAGED FREIGHT CLAIM PROCEDURES
When the diffusers are received, inspect for damage,
which may have occurred during shipment. If damage
is evident, it should be noted on the carrier's freight
bill. A written request for inspection by the carrier's
agent should be made at once.
STORAGE
Cartons should always be stacked on end with the
arrows on the cartons pointing up. Do not stack
cartons flat on the sides. Excessive weight may cause
damage to the diffusers. Do not store for prolonged
times at temperatures exceeding 130˚F/56˚C.
Acceptable humidity level 5-95% relative humidity
noncondensing.
IDENTIFICATION
Models are factory shipped one per carton. The
model designation is on the diffuser and on the
carton.
INSTALLATION PRECAUTIONS
When installing diffusers make sure construction
debris does not enter the diffuser or duct system.
Copyright © Acutherm 2014
FIG. 1 DIMENSIONS
OD
NOMINAL
NECK
Inches
SIZE (in.)
±
1
/
16
NOMINAL
NECK
6
5
15
/
16
SIZE
8
7
/
15
6"
16
8"
10
9
/
15
16
10"
12
11
15
/
16
12"
13
1
/
±
/
"
16
16
20±2mm
LIP
*595
Because the EF-B controls room temperature by
sensing the air induced up the center of the room,
care should be taken not to disturb room air
induction and entrainment. For example, location next
to walls or dropped lights results in the reflection of
supply air back at the Therma-Fuser diffuser and
should be avoided. A three way blow Therma-Fuser
diffuser should be used in this instance if either the
light or the Therma-Fuser diffuser cannot be
relocated.
POWER REQUIREMENTS
+3
24
/
VAC 10VA max.
-1
INSTALLATION
1.
Inspect the carton for damage before opening.
Notify carrier if external damage exists. Submit all
claims for shipping damage to the carrier.
2.
Move diffusers (in cartons) to installation area.
Note unit identification.
3.
Remove cardboard box and cardboard insert.
Recycle packing material.
4.
If other than 4 way blow pattern is installed note
the "AIRFLOW" markings on the top of the
diffuser and locate those sides in the proper
direction.
5.
Install in ceiling grid. Install T-bar support wire
close to each corner of diffuser. Make sure that
only wire suspended T-bars are used to support
acutherm.com | BACNET™ MOTORIZED VAV DIFFUSER - Manual
FORM 091.205 REV 1403
mm
±3
OD
Inches
mm
150
1
±
/
"
±3
16
NECK SECTION
200
15
5
/
150
16
15
7
/
200
250
16
15
9
/
250
16
300
15
11
/
300
16
1
OD
1
3
1
*23
/
±
/
" - 603±2mm
4
16
SQUARE
±
±
2mm Square with 16
2mm lip available
-specify 595mm square.
Fig. 1 Dimensions
1
/
±
/
" - 38±3mm
2
8
5
1
4
/
±
/
"
8
8
118±3mm
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