CAPF Installation Manual

2
to the area under the unit should the primary drain plug up and
overflow. As expressed in our product warranty, we will not be
liable for any damages, structural or otherwise due to the fail-
ure to follow this installation requirement.
Condensate drain connections are located in the drain pan at
the bottom of the coil/enclosure assembly. Use the female (3/4”
FPT) threaded fitting that protrudes outside of the enclosure for
external connections. The connectors required are 3/4" NPT
male, either PVC or metal pipe, and must be hand tightened to
a torque of no more than 37 in-lbs. to prevent damage to the
drain pan connection. An insertion depth between .36 to .49
inches (3-5 turns) should be expected at this torque.
1. Ensure drain pan hole is NOT obstructed.
2. To prevent potential sweating and dripping on finished
space, it may be necessary to insulate the condensate
drain line located inside the building. Use Armaflex
®
or
similar material.
A Secondary Condensate Drain Connection, now called for by
many building codes, has been provided. Pitch the drain line
1/4" per foot to provide free drainage. Provide required support
to drain line to prevent bowing. Install a condensate trap in the
primary drain line to ensure proper drainage. If the secondary
drain line is required, run the line separately from the primary
drain and end it where condensate discharge can be easily
seen.
If secondary drain is not installed, the secondary
access must be plugged.
CAUTION
8. Refrigerant Lines
NOTE: Refrigerant tubing must be routed to allow adequate
access for servicing and maintenance of the unit.
Do not handle coil assembly with manifold or flowrator tubes.
Doing so may result in damage to the tubing joints. Always use
clean gloves for handling coil assemblies.
8.1 Tubing Size/Length
For the correct tubing size, follow the specification for the
condenser/heat pump. Give special consideration to mini-
mizing the length of refrigerant tubing when installing coils.
Refer to Remote Cooling/Heat Pump Technical Publication
TP-107* Long Line Set Application R-410A for guidelines
for line lengths over 80’. Leave a minimum 3" straight in line
set from braze joints before any bends.
8.2 Tubing Preparation
All cut ends are to be round, burr free, and cleaned. Any
other condition increases the chance of a refrigerant leak.
Use a pipe cutter to remove the closed end of the spun
closed suction line.
8.3 Brazing
Braze joints should be made only with the connections pro-
vided external to the cabinet. Do not alter the cabinet nor
braze inside the cabinet. To avoid overheating after brazing,
quench all brazed joints with water or a wet rag.
8.4 Special Instructions for Flowrator (Piston) Version
Coils in flowrator version are equipped with a check style
flowrator for refrigerant management. For most installations
with matching applications, no change to the flowrator pis-
ton is required. However, in mix-matched applications, a
piston change may be required. See the piston kit chart or
consult your local distributor for details regarding mix-
matched piston sizing. If the mix-matched application re-
quires a different piston size, change the piston in the dis-
tributor on the indoor coil before installing the coil and follow
the procedure shown below.
8.5 Tubing Connections for Flowrator Model
1. Loosen the 13/16 nut 1 TURN ONLY to allow high pres-
sure tracer gas to escape. No gas indicates a possible
leak.
2. After the gas has escaped, remove the nut and discard
the plastic or brass cap.
3. Remove the check piston to verify it is correct and then
replace the piston. See piston kit chart in instructions.
4. Use a tube cutter to remove the spin closure on the suc-
tion line. DO NOT USE A CUTTING METHOD THAT
WOULD RESULT IN THE GENERATION OF COPPER
SHAVINGS OR COPPER DUST.
5. Slide the 13/16 nut into place on the tailpiece supplied in
the literature bag or with the unit.
6. Insert liquid line into the supplied tailpiece.