TWIN-PAK 20
INSTALLATION INSTRUCTIONS
Installation Procedure:
1. From job schedule or plan, deter-
mine proper assemblies for each
wall.
2. Install partial backplate at proper
height and level (Note: Where valve
compartments occur, allow 12" for
partial backplate).
3. Bracket Installation: Insert carriage
bolt through pitch adjustment slot in
bracket assembly. Locate bracket
assembly with partial backplate
and screw to wall (Note: 2 bracket
assemblies for enclosures 3' thru 6',
and 3 for 7' and 8'). Install hanger
assembly with serrated fl ange nut
and carriage bolt.
4. Install wall sleeve supports, if any.
5. Lay element on fl oor (Note: 4 1/4 fi n
dimension to be horizontal). Place
cradles on element and position
them so that the center of the
cradles will rest on the ball bearings
of the hanger assemblies. Install
element with cradles on hanger
assemblies.
6. Install enclosure. Begin with
lower enclosure. Insert the lower
enclosure top bend into the
armature bracket, then swing lower
enclosure bottom into position with
enclosure lock and tighten. Place
upper enclosure top bend into
partial backplate, then swing upper
enclosure bottom to the armature
bracket and push into place.
7. Install accessories. Accessories are
the overlapping type with a bottom
return to the wall. Push the top bend
of the accessories down behind the
partial backplate and anchor the
return to the wall bend at bottom for
a sturdy installation.
1 ELEMENT
2 UPPER ENCLOSURE
3 LOWER ENCLOSURE
4 FASTENERS - BY OTHERS
5 CRADLE
6 BRACKET ASSEMBLY
7 PARTIAL BACKPLATE
8 HANGER ASSEMBLY
9 CARRIAGE BOLT
10 SERRATED FLANGE NUT
3/4 COPPER
1" COPPER
1 1/4 COPPER
1 1/4 STEEL
2" STEEL
2
2
2
2
1
7 3/8
7 1/2
7 5/8
7 7/8
7 5/8
8 1/2
8 5/8
8 13/16
8 15/16
8 3/4
ELEMENT
CATALOG
DESIGNATION
NOMINAL
PIPE SIZE
CRADLE
NO.
STC-3/4 435
STC-435
STC-1435
ST-144
ST-243
A MIN
A MAX
TP-20
CAT-54881D
TP20II-1
Beacon/Morris
260 North Elm Street • Westfi eld, MA 01085
Tel: (413) 562-5423 • Fax: (413) 572-3764
www.beacon-morris.com
