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VARITHERM SMALL SQUARE VAV DIFFUSER
INSTALLATION INSTRUCTIONS
Damaged Freight Claim Procedure
When the diffusers are received, inspect for damage which
TK-HC
VAV cooling and VAV heating
may have occured during shipment. If damage is evident, it
VAV cooling only
TK-C
should be noted on the carrier's freight bill. A written request
TK-D
Manually adjustable blades
for inspection by the carrier's agent should be made at once.
Return air
TK-RA
Storage
Cartons should always be stacked on end. Do not stack
TABLE OF CONTENTS
cartons flat on their sides. Excessive weight may cause
Installation Instructions .........................................
damage to the diffusers. Do not store at temperatures
System Balancing ..................................................
exceeding 130°F/56°C.
Adjusting Miminum Flow .....................................
Identification
Adjusting Temperature Setpoints .....................
Blow Patterns ........................................................
The model designation is on the diffuser and on the carton.
Maintenance ..........................................................
Installation Precautions
Controlling the System .........................................
When installing diffusers, make sure construction debris does not enter the diffuser or duct system. Because the model VKD-HC
Troubleshooting ....................................................
controls room temperature by sensing the room air induced up the center of the room, care should be taken not to disturb room
Ten Year Warranty ...............................................
air induction and entrainment. For example, location next to walls or dropped lights results in the reflection of primary air back at
the Varitherm Small Square VAV diffuser and should be avoided. A three-way blow Varitherm Small Square VAV diffuser should be
used in this instance if either the light or the Varitherm Small Square VAV diffuser cannot be relocated.
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 other packaging. Discard packing material.
4.
If other than 4 way blow pattern is factory 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. (Adaptor frames are available for other 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 (9in/230mm radius).
7.
Do NOT reset the temperature set point on the VKD-HC model until the space is occupied. It is factory preset for average
conditions (74°F/23°C).
8.
Balance the system. See System Balancing.
9.
After the air conditioning system is started and after the space is occupied, where necessary adjust the temperature set point
on VKD-HC models to suit the occupant. See Adjusting Temperature.
Operating Instructions
Operating instructions for model VKD-HC are located on the back of the appearance panel.
Inspect the carton for damage before opening. Notify
carrier if external damage exists. Submit all claims for
shipping damage to the carrier.
identification.
packing material.
FIG. 1 DIMENSIONS
Figure 1. Dimensions
1
2
2
3
3
4
4. If other than 4 way blow pattern is factory installed, note
4
5
6
5. Install in ceiling grid. Install T-bar support wire close
6. Connect and secure the supply duct to the collar.
7.
8. Balance the system. See
9. After the air conditioning system is started and after
OPERATING INSTRUCTIONS
Operating instructions for model TK-HC are located on the
back of the appearance panel.
OPENING THE APPEARANCE PANEL
(TK-HC, TK-C, TK-D)
The appearance panel is attached with a latch clip on one
side and hinges on the opposite side.
To open the appearance panel (on a Therma-Fuser diffuser
installed in the ceiling):
1.
2. Using two hands, one on each side of the latch clip
To close the appearance panel:
1.
2. Latch the panel by pushing the clip into the small square
priceindustries.com/vavdiffusers | VARITHERM SMALL SQUARE VAV DIFFUSER - Manual
5
/
" OD
15
16
150mm
12" Square/305mm
12
/
" Square/320mm
5
8
the "AIRFLOW" markings on the top of the diffuser and
200% of actual size
locate those sides in the proper direction.
to each corner of diffuser. Make sure that only wire
suspended T-bars are used to support diffuser weight.
(Adaptor frames are available for other ceilings.)
Flexible duct should NOT be formed in a centerline
radius of less than 1½ times the duct diameter (9
in/230mm radius).
Do NOT reset the temperature set point on the TK-HC
model until the space is occupied. It is factory preset for
average conditions (74°F/23°C).
the space is occupied, where necessary adjust the
temperature set point on TK-HC models to suit the
occupant. See Adjusting Temperature.
Locate the side of the Therma-Fuser diffuser to the right
(clockwise) from the thermostats.
bracket, place your fingers above the appearance
panel and firmly pull down to disengage the clip. The
appearance panel will rotate and hang down vertically
on the hinges.
Rotate the panel upward.
hole in the bracket.
FORM 051.201 REV 1704
1
/
"
1
2
38mm
2
/
"
3
8
60mm
System
Balancing.
1
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