10
Heat Controller, Inc.
HKV LArge CommerCiAL
IOM Instructions
Condensate Piping - HKV
Remove knockout on side that drain will be connected.
Remove access panels. Inside of unit, untie and uncoil
drain hose. Form trap in hose, make sure hose is not
kinked or deformed. Connect plate assembly to side
frame with 2 screws.
Outside of unit, connect 1” EPT fitting to plate assembly.
Run line to building drain. Horizontal runs must be pitched
¼” per foot (10 mm per 46 cm) toward drain. Do not trap
externally.
Figure 3 illustrates a typical trap and vent used with HKV
series equipment.
Each unit must be installed with its own individual line to
the building main condensate drain line or riser. Provide a
means to flush or blow out the condensate line. DO NOT
install units with a common trap and or vent.
Always vent the condensate line when dirt or air can
collect in the line or a long horizontal drain line is
required. Also vent when large units are working against
higher external static pressure than other units connected
to the same condensate main since this may cause
poor drainage for all units on the line. WHEN A VENT
IS INSTALLED IN THE DRAIN LINE, IT MUST BE
LOCATED AFTER THE TRAP IN THE DIRECTION OF
THE CONDENSATE FLOW and opening 46” (117 cm)
minimum from bottom of unit. (Vent per code)
*IPT
Trap Depth >1.5” [38mm]
Min 1.5”
[38mm]
1/4” per foot
[21mm per m] drain slope
PVC or
Copper by others
See size in table
Rev.: 10/11/04D
Vent (below top of
drain line)
Pipe
Connected Connected
Size
Tons
kW
3/4” [19mm]
<4
<14
1” [25mm]
<6
<21
1-1/4” [32mm]
<30
<105
1-1/2” [38mm]
<50
<175
2” [51mm]
<150
<527
3” [76mm]
<300
<1055
4” [102mm]
<500
<1758
* Make sure all connections are secure and
water tight.
WARNING!
WARNING!
Ensure condensate line is pitched toward
drain 1/4" per foot [10mm per 46cm] of run.
Condensate Installation
All fittings and tubing outside of the unit are field supplied.
Condensate
Pan
1” IPT
2 Screws
Open
Vent
1” EPT
Fitting
46” Min
To Bottom
Of Unit
To main
drain, pitch
¼” Per foot
Figure 3: HKV
Drain main or riser must be sized for all units connected
to it.
After drain is connected to main and all drain connections
are secure and water tight, pour 1 gallon of water into
condensate pan. Water should drain out freely. Repair
any leaks.
