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INSTALLATION
CA Model
CA Model
8733942456 (2016/04)
Subject to change without prior notice
INSTALLATION
B
efore installing the unit, examine each pipe, fitting and
valve; remove any dirt or debris found on or in these
components. Use care when installing the system
components to avoid damage to the cabinet finish or
chassis.
1.
After removing the console unit from its packaging
remove the cabinet by removing the cabinet screws
on either side of the unit and lifting the cabinet off
the chassis. Set the cabinet aside and cover it (the
console unit’s pack aging can be used for this
purpose).
2.
Position the sub base directly on the finished floor.
Make sure the sub base is level (use shims if
necessary). The sub base has a frame that supports
the cabinet and may be secured to wall.
3.
Position the chassis onto the sub base. Check and
align electrical, water and condensate connections
and secure to the sub base with 4 screws.
4.
Before connecting the unit to water, make sure that
the loop has been properly flushed. After flushing
the system, connect piping or hoses to the proper
supply, return and condensate connections. Refer to
the piping section of this manual for more
information
5.
Make all necessary electrical connections to the
unit.
6.
Make sure the unit’s washable filter is clean and
installed in the sub base. Also make sure that the
filter clip is in place.
7.
Reinstall the unit cabinet via locating pins at the top
of the chassis and two screws in the unit sub base.
PIPING:
Supply and Return Piping
The following items should be adhered to in addition to
applicable piping codes.
•
A drain valve at the base of each riser to enable
proper flushing of the system at startup and during
servicing.
•
Shut-off/Isolation ball valves at the supply and
return connections and unions at each unit to permit
proper flow balancing and unit servicing.
•
Strainers at the inlet of each circulating pump.
•
Use of teflon tape on threaded pipe fittings to
eliminate water leaks and ensure against air
entering the system.
•
Flexible hose connections between the unit and the
rigid system to eliminate the possibility of vibration
transmission through the piping.
•
Insulation is not normally required on supply and
return piping for boiler tower installations except in
unheated sections or outdoor runs.
•
Insulation is required for closed-loop.
•
Geo-thermal installations as loop temperatures may
fall below the dew point and can even fall below the
freezing point of water during heating season.
Condensate Piping
Console units are designed with a blow-through
configuration in the air handling section. This means
that there is positive pressure at the unit drain pan and
thus trapping is not required. Condensate is routed
from the drain pan via a 5/8” non-pressure rated vinyl
hose that is located below the supply and return water
connections.
Though horizontal runs of condensate piping are usually
too short to pose problems, horizontal runs should be
pitched at least 1 inch for every 10 feet of piping. Avoid
low spots or no sloped piping, as these areas can
collect sediment and eventually block condensate flow.
Always inspect both internal and external condensate
piping for kinks that could block condensate flow.
Hose Kits
When using optional hose kits follow the
manufacturer’s recommendations for installation. Never
stretch or twist hoses and never use hoses that show
external wear or damage or are suspected of having
damage. Never exceed the manufacturer’s maximum
working pressure recommendations.
Refer to the unit wiring diagram and the Electrical
section of this manual.
DANGER:
When making electrical
connections to the unit make sure that the
power is disconnected. Failure to
disconnect power before connecting power
wiring to the unit will result in serious injury
or death and damage to the unit.
