Sub-Zero CTWH30 Typical Installation, MOUNTING NewFrame Construction, discharge position, Page

TYPICAL INSTALLATION

MOUNTING (New Frame Construction)

10” ROUND DUCT	4½” X 18½”
		Mounting brackets
	TO 10” ROUND
	TRANSITION	factory-shipped in
		position for ½” ceil-
		ing material.
		CEILING
		JOIST
		(24” centers
		shown)
Blower factory-shipped		10” ROUND
		DUCT
in horizontal
discharge position.		4½” X 18½”
	MOUNTING	TO 10” ROUND
	SCREW	TRANSITION

Factory-shipped unit installed in new construction.

MOUNTING (Existing Frame Construction)
2 X 4 FRAMING		4½” X 18½” TO 10”
		ROUND TRANSITION
(wide side down)
4½” X 18½”
TO 10” ROUND
TRANSITION
10” ROUND		10” ROUND
DUCT		DUCT
		MOUNTING
		SCREW
MOUNTING
BRACKETS
(Attached to
opposite sides
of housing &
upside-down,	CEILING JOIST
so housing is
flush with	(24” centers
finished ceiling)	shown)

Blower factory-shipped in straight-through

discharge position.

Page 2

TYPICAL INSTALLATION

MOUNTING USING HANGER KIT (included)

	HANGER
	KIT BOLT
	& WASHER
	EXTENSION
	SPRING
HANGER	10” ROUND
KIT CHAIN	DUCT (INTAKE)
HANGER
KIT
EYE-BOLT
4½” X 18½”
TO 10”
ROUND	HANGER
TRANSI-
	KIT NUT &
TION
	WASHER
	MOUNTING
	BRACKET
	GRILLE NUT
10” ROUND	(Install into
DUCT	square holes in
(OUTLET)	housing)
ACCESS	ACCESS
	PANEL SCREW
PANEL

Blower factory-shipped in straight-through

discharge position.

DUCTING (Horizontal blower discharge)

	ROOF CAP
10”
ROUND
DUCT
4½” X 18½”
TO 10” ROUND
TRANSITION	10”
	ROUND
	DUCT
	10”	WALL
		CAP
	ROUND
	ELBOW

Two ways to connect ductwork to a factory-shipped unit.

IMPORTANT: Remove shipping tape from damper

Remove the shipping tape from the damper flap and make sure that damper flap opens and closes freely inside the ductwork. Use duct tape to make ductwork connections secure and air-tight.