Step 6 - Provide For Condensate Disposal; Step 7 - Install Electrical Connections - Payne PA1Z Installation, Start-Up And Service Instructions Manual

• Insulate and weatherproof all external ductwork. Insulate
and cover with a vapor barrier all ductwork passing through
conditioned spaces. Follow latest Sheet Metal and Air Con-
ditioning Contractors National Association (SMACNA) and
Air Conditioning Contractors Association (ACCA) mini-
mum installation standards for residential heating and air
conditioning systems.
• Secure all ducts to building structure. Flash, weather-
proof, and vibration-isolate duct openings in wall or roof
according to good construction practices.
Figure 8 shows a typical duct system with PA1Z unit
installed.
LEGEND
Power Wiring
Control Wiring
Condenser Airflow
Evaporator Airflow
Fig. 8 — Typical Installation
Table 2 — Minimum Airflow for Safe Electric
Heater Operation (Cfm)
UNIT SIZE PA1Z
024 030 036
700 875 1200
B. Converting Horizontal Discharge Units to Downflow
(Vertical) Discharge
WARNING: Before performing service or mainte-
nance operations on system, turn off main power to unit.
Turn off accessory heater power switch if applicable. Elec-
trical shock can cause personal injury.
Units are dedicated side supply products. They are not con-
vertible to vertical air supply. A field-supplied plenum must
be used to convert to vertical air discharge.
VI. STEP 6 — PROVIDE FOR CONDENSATE DISPOSAL
NOTE: Be sure that condensate-water disposal methods com-
ply with local codes, restrictions, and practices.
Unit removes condensate through a 1
located at the end of the unit. See Fig. 2-4 for location of con-
densate connection.
*Separate disconnect per NEC
(National Electrical Code) required
for electric heater when single-
point connection is not used.
042 048 060
1225 1400 1750
3 ⁄ -in. ID hole which is
64
Condensate water can be drained directly onto the roof in
rooftop installations (where permitted) or onto a gravel apron
in ground-level installations. Install a field-supplied con-
densate trap at end of condensate connection to ensure proper
drainage. Make sure that the outlet of the trap is at least
1 in. lower than the drain-pan condensate connection to pre-
vent the pan from overflowing. See Fig. 9A and 9B. Prime
the trap with water. When using a gravel apron, make sure
it slopes away from the unit.
If the installation requires draining the condensate water away
from the unit, install a 2-in. trap using a
pipe. See Fig. 9A and 9B. Make sure that the outlet of the
trap is at least 1 in. lower than the unit drain-pan conden-
sate connection to prevent the pan from overflowing. Prime
the trap with water. Connect a drain tube using a minimum
of 3 ⁄ -in. PVC, 3 ⁄ -in. CPVC, or
4 4
plied). Do not undersize the tube. Pitch the drain tube down-
ward at a slope of at least 1 in. for every 10 ft of horizontal
run. Be sure to check the drain tube for leaks. Prime trap at
the beginning of the cooling season start-up. Allowable glues
for condensate trap connection are: Standard ABS, CPVC, or
PVC cement.
Fig. 9A — Condensate Trap (Using Tubing)
Fig. 9B — Condensate Trap (Using PVC Piping)
VII. STEP 7 — INSTALL ELECTRICAL CONNECTIONS
WARNING: The unit cabinet must have an unin-
terrupted, unbroken electrical ground to minimize
the possibility of personal injury if an electrical fault
should occur. This ground may consist of an electrical
wire connected to the unit ground in the control com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code), ANSI (American National Standards Institute)/
NFPA (latest edition) (in Canada, Canadian Electrical
Code CSA C22.1) and local electrical codes. Failure to
adhere to this warning could result in personal injury
or death.
—7—
3 ⁄ -in. OD tubing or
4
3 ⁄ -in. copper pipe (all field sup-
4