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THERMA-FUSER™
INSTALLATION INSTRUCTIONS
Damaged Freight Claim Procedure
When the diffusers are received, inspect for damage which may have occured 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. Do not stack cartons flat on their sides. Excessive weight may cause damage to the
diffusers. Do not store for prolonged times at temperatures exceeding 130°F/56°C.
Identification
Units are factory shipped two per carton. The model designation is on the unit and on the carton. See Fig. 2
on page two.
Installation Precautions
When installing units, make sure construction debris does not enter units or duct system. Because models TL-C and TL-CW
control room temperature by sensing the room air induced up the center of the room, care should be taken not to disturb room
air induction and entrainment. For example, when located next to walls or dropped lights, air blown toward them results in the
reflection of primary air back at the Therma-Fuser diffuser and should be avoided.
Installation Instructions
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. Discard packaging material. Model TL-C and TL-CW have factory installed
balancing stops which hold the blade(s) open. See Fig. 5. Do not remove those stops until after balancing.
4.
Install in ceiling grid. Install T-bar support wire close to each corner of unit. Make sure that only wire suspended T-bars are
used to support unit weight. The diffuser can be hung with hanging holes in the top of the diffuser. See Fig. 3. Do not block
the induction nozzle on the control panel end of the diffuser. Do not use screws or drill holes in the areas marked "No Holes or
Screws" on the control panel end of the diffuser.
a.
Do not install standard model TL-C and TL-CW linear Therma-Fuser units
end-to-end. A 2 in. / 51mm clear space is required beyond the induction
air outlet. For end-to-end installations, use continuous look (model TLC-XX)
linear Therma-Fuser units.
b. Where ceiling tiles lay directly on the longitudinal edges of the diffuser,
the longitudinal edges of the diffuser should be in the same place as the
T-bars. Loosen the screws holding the end angles, raise the end angles
and retighten the screws. The end angles will rest on the T-bars with the
longitudinal edges in the plane of the T-bar bottoms. See Fig. 4 on
page three.
5.
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.)
6.
Do NOT reset the temperature set point on the TL-C and TLCW models until the space is occupied. It is factory preset for
average conditions (74°F / 23°C).
7.
Balance the system. See System Balancing.
8.
After the air conditioning system is started and after the space is occupied, where necessary adjust the temperature set
point on ST-C and ST-HC models to suit the occupant. See Adjusting Temperature.
THERMA-FUSER
THERMALLY POWERED VAV DIFFUSER
I I N N S S T T A A L L L L A A T T I I O O N N , , B B A A L L A A N N C C I I N N G G & & M M A A I I N N T T E E N N A A N N C C E E
Models: TL-C
VAV cooling only
TL-CW VAV cooling and warm up (constant
volume heating)
TL-D
Manually adjustable diffuser
TL-RAD Return-ducted
TL-RAP Return-ceiling plenum
(See Fig. 1 on page two for dimensions)
TABLE OF CONTENTS
Installation Instructions . . . . . . . . . . . . . . . . . .
System Balancing . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting Temperature Setpoint . . . . . . . . . . .
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controlling the System . . . . . . . . . . . . . . . . . . .
Minimum Flow . . . . . . . . . . . . . . . . . . . . . . . . .
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . .
Ten Year Warranty . . . . . . . . . . . . . . . . . . . . . . .
DAMAGED FREIGHT CLAIM PROCEDURE
When the diffusers are received, inspect for damage which may
have occured 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. Do not stack cartons
flat on their sides. Excessive weight may cause damage to the
diffusers.
Do not store for prolonged times at temperatures exceeding
130°F/56°C.
IDENTIFICATION
Units are factory shipped two per carton. The model designation
is on the unit and on the carton. See Fig. 2 on page two.
INSTALLATION PRECAUTIONS
When installing units, make sure construction debris does not
enter units or duct system.
Because models TL-C and TL-CW control room temperature by
sensing the room air induced up the center of the room, care
should be taken not to disturb room air induction and entrain-
ment. For example, when located next to walls or dropped lights,
air blown toward them results in the reflection of primary air back
at the Therma-Fuser diffuser and should be avoided.
™
INSTALLATION INSTRUCTIONS
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 iden-
tification.
3. Remove cardboard box and cardboard insert. Discard packag-
ing material. Model TL-C and TL-CW have factory installed
balancing stops which hold the blade(s) open. See Fig. 5. Do
not remove those stops until after balancing.
1
4. Install in ceiling grid. Install T-bar support wire close to each
corner of unit. Make sure that only wire suspended T-bars are
3
used to support unit weight. The diffuser can be hung with
4
hanging holes in the top of the diffuser. See Fig. 3. Do not
4
block the induction nozzle on the control panel end of the dif-
fuser. Do not use screws or drill holes in the areas marked "No
4
Holes or Screws" on the control panel end of the diffuser.
5
a. Do not install standard model TL-C and TL-CW linear
5
Therma-Fuser units end-to-end. A 2 in. / 51mm clear space
5
is required beyond the induction air outlet. For end-to-end
installations, use continuous look (model TLC-XX) linear
Therma-Fuser units.
b. Where ceiling tiles lay directly on the longitudinal edges of
the diffuser, the longitudinal edges of the diffuser should be
in the same place as the T-bars. Loosen the screws holding
the end angles, raise the end angles and retighten the
screws. The end angles will rest on the T-bars with the lon-
gitudinal edges in the plane of the T-bar bottoms. See Fig. 4
on page three.
5. 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.
6. Do NOT reset the temperature set point on the TL-C and TL-
CW models until the space is occupied. It is factory preset for
average conditions (74°F / 23°C).
7. Balance the system. See System Balancing.
8. After the air conditioning system is started and after the space
is occupied, where necessary adjust the temperature setpoint
to suit the occupant. See Adjusting Temperature Setpoint.
FIG. 3 HOLES FOR HANGING
Fig. 3. Holes for Hanging
For hanging, use two
diagonal .110 in / 2.7mm
holes in the top of
the diffuser.
acutherm.com | THERMA-FUSER™ - Manual
FORM 21.2 REV 1704
MODULAR VAV SYSTEMS
Continued on NEXT Page
1
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