INSTALLATION INSTRUCTIONS • TYPES DL65-WM, DL145-WM
TQII-2
J17-63967
HEATER
GENERAL DESCRIPTION
ThermaQuiet heaters are for use with forced hot water in
residential heating systems and consist of a copper tube,
aluminum fi nned heating element, with a single phase
motor and centrifugal fan design. Their purpose is to deliver
a comfortable stream of warmed air, and their construction
is extremely compact so minimum space is required for
installation. ThermaQuiet is used for vertical mounting,
with the air discharged upward through a fl ush mounted,
louvered outer casing.
All types have heating elements with 1/2" nominal copper
tube connections, and come with a quick connect that can
be quickly and easily removed (the quick connect accepts
1/2" copper or pex tubing. They are also equipped with a
115V electric fan/motor assembly, intertwined with an air
and water temperature sensor to prevent operation until
hot water is circulating. These units are NOT intended to
be used on one or two pipe steam systems.
THERMAQUIET Q & A
FOR INSTALLERS
Q. How is ThermaQuiet piped?
ThermaQuiet is piped with 3/4" supply and return pipe.
Connections to ThermaQuiet from supply/return in 1/2"
(Quick Connect).
Q. Can I use 1/2" pipe for Supply and Return?
No, because the ThermaQuiet is designed to have a high
resistance to fl ow so that the infl uence of pipe runs is minimized.
Q. What type of pump must I use?
Any 20 ft head pump (i.e. 0011) should suffi ce, but a high head
pump must be used.
Q. How many ThermaQuiet’s can I put on a 3/4" circuit?
Depending on the length of run, 2-3 is usually fi ne. For longer
runs use larger diameter pipe.
Q. How do I know if I have adequate fl ow?
There should be 8-10 degrees difference between supply and
return. If it is much higher, or if you feel a large difference with
your hand, then you have low fl ow.
ATTENTION: READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE, OR
SERVICE THE THERMAQUIET
HEATERS! RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.
INSPECT THE SHIPMENT IMMEDIATELY WHEN RECEIVED TO DETERMINE IF ANY DAMAGE HAS OCCURRED
DURING SHIPMENT.
PRIOR TO INSTALLATION, CHECK FOR ANY VISIBLE DAMAGE. MAKE CERTAIN THAT ANY LOOSE PARTICLES ARE
REMOVED (ESPECIALLY IN THE BLOWER ASSEMBLY AREA).
9/12
260 NORTH ELM STREET • WESTFIELD, MA 01085
7555 TRANMERE DRIVE • MISSISSAUGA, ONTARIO L5S 1L4 CANADA
www.designlineonline.com
Figure A: DL65-WM
Figure B: DL145-WM
