41
least 3” below the inlet (outlet of pan), The trap should
extend at least 3” below the outlet, and one additional inch
for every inch of static pressure on the blower.
• Drain line must be routed to an acceptable drain or outdoors
in accordance with local codes.
• Do not connect the condensate drain line to a closed sewer
pipe.
• Drain line may need insulation or freeze protection in certain
applications.
IMPORTANT: For installations that do not use the
“through-the- curb” drain port, use a field supplied 3/4”
plug to seal the unused connection. Failure to do so
could allow rain water or moisture to enter the building.
Through the Curb Drain
To use the through the curb and base pan drain option the
drain must be connected as follows:
• Using a 3/4 inch male NPT threaded fitting, connect to the
threaded fitting underneath the unit, use Teflon tape and
or pipe thread sealant on the threads. Tighten this fitting
securely. Do not over-tighten as damage can occur. This
fitting must not leak.
• Install a drain trap under the unit, the trap must be at least
3” in depth. Route the drain of the trap to an appropriate
drain location as required by local code.
• On the outside of the unit, connect a 3/4” male PVC pipe
fitting to the outlet of the drain pan, and connect a 3/4” male
PVC pipe fitting to the through the curb drain fitting (Figure
8). Using appropriate pipe fittings, a 90 degree elbow and
90 degree street elbow, with two 3” lengths of PVC pipe, to
connect these two fittings together. Do not glue the fittings
connected to the male adapters so that the drain pan can be
easily removed for service.
XI. CONDENSATE DRAIN, OUTDOOR COIL
The outdoor coil during heating operation will sweat or run water
off. The outdoor coil will also run water off during the defrost
cycle. See Section VI, Installation, Page 48 for mounting precau-
tions.
XII. ELECTRICAL WIRING
Field wiring must comply with the National Electrical Code
(CEC in Canada) and local ordinances that may apply.
A. POWER WIRING
1. This unit incorporates dual point electrical connections
for the unit and electric heat accessory. A single point
wiring accessory kit is available for field installation.
2. It is important that proper electrical power is available to
the unit. Voltage should not vary more than 10% from
the values marked on the unit rating plate. Phase voltag-
es must be balanced within 3%.
3. Install a branch circuit disconnect within sight of the
unit. See Figure 17. Use the unit rating plate or RHPD
Electrical Data to determine the required size.
4. The branch circuit wire must be sized in accordance with
the National Electrical Code (C.E.C. in Canada) and
local ordinances that may apply using the minimum cir-
cuit ampacity found on the unit rating plate.
5. Field-installed power wiring must be run through ground-
ed rain-tight conduit attached to the unit power entry
panel and connected as follows:
NOTICE
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP INSTALLED
* External Static is the Sum of the Supply and Return Duct Static Pressure in Inches of Water Column
3-Inch Min.
3-Inch Min.
+
External Static*
DO NOT
OVER TIGHTEN
DRAIN FITTING
3/4” NPT Threaded
Connection to
Drain Line Opening
3/4” NPT Threaded
Connection to the
Through-the-Curb
Drain Line Option.
Leave Plugged
when not in use.
See instructions for details
Connections should
be no more than hand
tight plus one turn.
Position drain line
and fittings so as not
to interfere with panel
removal.
FIGURE 11
CONDENSATE DRAIN
Содержание RHPD Series
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Страница 70: ...70 T2 T3 T1 COMP AUX 4 5 6 2 1 3 W FIGURE 22...
Страница 76: ...76 PR T2 T3 T1 COMP AUX 4 5 6 2 1 3 FIGURE 28...
Страница 78: ...78 PR T2 T3 T1 COMP VFD AUX 4 5 6 2 1 3 FIGURE 30...
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