Trane UniTrane Installation, Operation And Maintenance Instructions

38 UNT-SVX07B-EN
Installation—Mechanical
2. Slide a 1/2-inch sweat connection coupling (installer provided) onto the coil headers.
Note: F
or vertical fan-coil units, push the main condensate drain hose and overflow
condensate drain hose through the inside of the chassis end panel to prevent them from
getting burned when making sweat connections. Be sure to pull the hoses back through
and route to the auxiliary drain pan when the end panel has cooled.
3. Solder the joint using bridgit lead-free solder (A
STM B32-89) to provide a watertight
connection. Avoid overheating factory soldered joints when soldering field connections to the
coil to prevent leakage from occurring.
4. Insulate all piping to coil connections as necessary af
ter connections are complete.
Note: Main
tain a minimum distance of one foot between the reduction fitting for the
1
/
2
-inch
diameter line and the fan-coil unit piping connections.
5. Install the optional auxiliary drain pan,
which ships in the accessory packet.
Water Piping Connections to Factory-Installed Piping Package
Before installing water piping supply and return lines to factory piping package, note the following
items.
• All piping connections are 5/8-inch O.D. (1/2-inch nominal) female copper connections.
• The fan-coil supply and return piping should not interfere with the auxiliary drain pan or
condensa
te line. See “Condensate Drain,” p. 38 for more information.
• The installer must provide adequate piping system
filtration and water treatment.
• If the unit has a factory deluxe piping package, the piping includes a str
ainer with a 20-mesh
size screen, which allows minimal protection from debris. Therefore, clean the strainer
regularly.
Note: Main
tain a minimum distance of one foot between the reduction fitting for the
1
/
2
-inch
diameter line and the fan-coil piping connections.
1. The factory piping package ships with brackets to adequately support the piping during
shipment. Remove these brackets before connecting water piping to the unit.
2. Close the piping end valves to the
fully open position to prevent damage to the valve seat
during brazing.
3. Remove the auxiliary drain pan, if it is in place
, to prevent exposure to dripping solder or
excessive temperatures.
4. Solder water piping connections to supply and return end connections. Avoid overheating
factory
soldered joints to prevent the possibility of leakage.
5. Insulate fan-coil piping to auxiliary drain pan connections and any piping that is not above the
auxilia
ry drain pan.
Condensate Drain
1. De-burr the pipe end before making the connection to the drain pan.
2. Connect a 7/8-inch O.D. copper pipe or tube, with a 0.2
0 inch wall thickness, to the auxiliary drain
pan. This should be a mechanical connection that allows easy removal of the auxiliary drain pan
when servicing the piping end pocket.
3. Slide the copper pipe over the drain pan nipple and tighten the collar on the pipe with a hose
clam
p (installer supplied).
Maintain a continuous drain line pitch of one inch pe
r ten feet of drain line run to provide adequate
condensate drainage. Extend the drain line straight from the drain pan a minimum distance of six
inches before making any turns. The installer must provide proper support for the drain line to
prevent undue stress on the auxiliary drain pan.

Trane UniTrane Specifications

General

Brand	Trane
Model	UniTrane
Category	Heater
Language	English