Instructions / Assembly

General
CONTRACTOR SERIES BASEBOARD RADIATOR
CONTRACTOR SERIES
Installa
tion Guide
Myson Inc./Rettig USA
45 Krupp Drive, P.O. Box 1460, Williston, VT 05495
www.mysoncomfort.com
It is assumed that the installer has the appropriate technical knowledge
related to building codes, standard trade practices, and proper use of the tools of the trade.
Failure to flush system of debris and flux may cause premature radiator failure, which can result in leaks and
property damage NOT covered under the Myson Warranty.
Step 1 Fill and vent the system.
Step 2 Run the system for two (2) hours at full temperature with all radiator valves in the open position.
Step 3
Shut off and drain the system while the water is still hot.
Step 4 Refill the system.
Step 5 Reheat, vent, and balance the system.
Step 6 Once the radiator is filled with water the system should be left filled.
Step 7 System should be checked for leaks on seasonal start-ups. Leaks must be repaired
as automatic system fill valves allow fresh water/oxygen into the system attacking
radiators internally.
SYSTEM START-UP
DESIGN AND LAYOUT CONSIDERATIONS:
Myson radiators should only be used with recirculation pump closed loop hydronic heating systems such as 2 pipe
reverse return, 2 pipe direct return, 1 pipe monoflo or homerun piping systems. Series loop piping is not
recommended. Myson radiators are not for use in gravity or steam systems. Position your radiator away from your
circulator pump to avoid either excess pressure that could force water out the air vent or excess suction that could
draw air into the system. The suggested location for your Myson radiator, where possible, is below a window
where it can minimize downdrafts from glazed areas. Mounting the radiator a minimum of 4 inches off the floor
willaprovideaforaadequateaconvection.
Myson Contractor Series radiators are supplied with a drain plug, vent plug, mounting brackets & TRV insert.
V
ALVE ROUGH-IN:
The Myson Contractor Series
radiator is
intended
to be install
ed
using
the
bottom
right
1/2" connections.
The supply MUST be connected to the left
hand connection as you face the radiator in order
for the internal thermostatic valve to work. (see
figure 1 for recommended connection)
MOUNTING: Myson Contractor Series radiators are supplied with MNCLK200-EZ wall brackets. These brackets
may be positioned anywhere along the length of the radiator to accommodate wall framing locations.
For more detailed bracket installation dimensions and mounting positions please consult the
assembly instructions included with the mounting brackets.
SAFETY PRECAUTIONS
Radiators are hot when in use, and as such, present a risk of burns to users on prolonged contact. The
temperature of a radiator is dependent on the temperature of the system water, as set by the system installer
or user. Installers and users should
take all necessary steps to minimize the risks of burns. If the risk is
significant, consideration should be given to installing low surface temperature radiators, or to placing guards in
front of the radiators.
For
the correct installation of radiators it is essential that the mounting of the radiator to the wall is carried out
in such a way that it is suitable for intended use AND predictable misuse.
Standard Connections:
6 x internal thread G 1/2“ BSP side 4 corners plus 2 bottom right
Maximum positive operating pressure: 145 psi
Maximum operating temperature: 230° F
2"
1
3
/
16
"
figure
1
Other connection configurations are shown below. Vent should be located at top corner opposite supply.
A variety of optional TRV heads (M30 x 1.5 thread) are available from Myson. A manual adjustment cap is provided.
ALTERNATE CONNECTIONS: When using Myson radiator valves in the side connections to install your
radiator add the following distance from the end of the radiator to the center of your Supply/Return pipe for
each valve: For LKD16AN valves add 1-3/4" --- For FF16WAC / FF16LAC valves add 1-5/8".
In addition to the LKD and FF valves the following BSP adapters and valves are available from Myson for use with
your Contractor Series radiators: HV-S or HV-A valves for bottom connections only: (102-82-53 adapters are
required in conjuntion with the HV valves).
NOTE: The last 2 diagrams shown (lower side supply and return) will result in an approximate 10% lower output.
NOTE: All nylon paint plugs must be removed and replaced with an appropriate metal plug, vent or valve!!
MAR 2016