Weil-McLain Therma Trim Electric Baseboard Heater User Manual

THERMA TRIM

MODEL TT HYDRONIC BASEBOARD

ASSEMBLY INSTRUCTIONS

Position back panels

Back panels must be positioned correctly to accommodate accessories, as shown below.

Min 3 ¾"

Hinged

end cap

Max 4 ½"

Max 1>|zn"

Inside

bay corner

Attach back panel to wall

Screw or nail into wall
studs at top and bottom.

No closer than 3 inches
from end of panel.

Min 1Z\v"

Butt back panels together.

Splice

Outside

corner

Install brackets

Position brackets evenly along length of
panel, approximately every 2 feet.

a

Insert top bracket tab
into top slot in back
panel.

Inside

corner

Min 3"

Max 3Z\v"

Plain end cap

Min 0"

Max 2 Z|x "

or wall end

Cut element

When a shorter length is needed

New

length

a

Measure from the
female end for the
required length.

Bottom of panel must
never be lower than the
surface of the finished
floor or carpet.
Add shim as shown if
necessary.

Shim (if needed)

Finished floor surface
or carpeting.

Press bracket flat

b

against back panel
and slide down so
bottom tab enters
bottom slot in back
panel.

New

length

Cut glide rails with

b

tin snips.

c

Remove 6 fins on
each side of the
location to be cut.

Cut copper using

d

tube cutter and
ream to remove
burrs.

550-110-762/0400

Install element

Place element on
brackets as shown.

Assemble multiple
elements by soldering
the male end on one
element into the female
end of another.

Holes for risers & connectors

Drill 1½" holes for risers or connectors

Solder elements to risers

1C\," from wall

and to any additional
tubing that may be
required.

Support bare tubing

Place return pipe in
cradle provided by
bracket, as shown.

Install damper

a

b

For horizontal runs of
more than 30 feet,
install expansion
joints.

Place open end of
damper onto bracket
half rounds.

Press down and inward
to snap onto bracket.

1C\," from wall

2 >\zn" above

finished floor

Install front cover

When attaching radiant tubing,
solder connectors and let cool
before attaching tubing. Follow all
tubing manufacturer's instructions.

a

Hook bottom lip of
front cover under
lower bracket arm
as shown.

b

Lift the front cover
until top lip of cover
snaps over top prong
of bracket.

If cover does not fit
snugly, bend lower
bracket arm down
and reinstall front
cover.

Support bare supply
tubing from bracket
using wire hangers,
(not supplied).

DimensionsDimensions

1-3/8

8

2

2-9/16

1-11/32

2-25/32

1

-

1

3

/ 2

3

1-1/4

RatingsRatings

Therma Trim Model TT I=B=R Approved Water Ratings

Water Flow Rate

GPM

1

4

Capacities in BTU/Hr. per Linear Foot with 65 F Entering Air

0

Average Water Temperature ( F)

180 190

Lbs/Hr

500

2000

170

510

540

580

610

200 210 220

710

650

750

690

780

820

0

Notes: Notes:

850

900

I=B=R approved water ratings are based on the active (finned) length and
include the 15% addition for heating effect allowed by the I=B=R Testing
and Rating Code for Baseboard Type of Radiation. The active length is 3"
less than the enclosure length. Ratings apply to the assembly with the
damper installed and adjusted to the normally open position.

The heating elements are constructed of 3/4" nominal copper tubing
expanded into 1 7/8" x 2 11/32" aluminum fins, which are spaced 67 to the
foot; fin thickness is .008". Elements are unpainted.

Use of I=B=R ratings at the 4 gpm flow rate is limited to installations in
which the water flow rate through the baseboard unit is equal to or greater
than 4 gpm. Where the water flow rate is not known, the I=B=R ratings at
the standard flow rate of 1 gpm must be used. Flow rates exceeding 6
gpm should be avoided because of possible noise.

Pressure drop through Therma Trim Baseboard is 0.047" of water per
linear foot at the 1 gpm flow rate. At the 4 gpm flow rate, pressure drop is

0.525" of water per linear foot.

Weil-McLain

500 Blaine Street

Michigan City, IN 46360-2388

http://www.weil-mclain.com

550-110-762/0400