SYSTEM CHARGE
The factory charge in the outdoor unit includes enough
charge
for the unit and a most sold matched evaporator
.
Some indoor coil matches may require some additional
charge.
Sweat
connect units also include suf
ficient charge for 15
feet of lines. Pre–charged line lengths are factory
charged with the correct amount of refrigerant required.
Table
2 lists the refrigerant line charges.
The “TOTAL SYSTEM CHARGE” must be permanently
stamped
on the unit data plate.
T
otal system charge is determined as follows:
1. Determine outdoor unit charge from tabular data
sheet.
2. Determine indoor coil adjustment from tabular data
sheet.
3. Calculate
the line charge using T
able 2 factors. Cal
-
culate over 15 feet of
sweat lines for sweat connect
units.
NOTE:
For
sweat connect lines, the line charge over
15
feet should be included on the data plate and
must
be added to the system.
4. T
otal system charge = 1 + item 2 + item 3.
5. Permanently stamp the unit plate with the total
amount
of refrigerant in the system.
CHECKOUT PROCEDURE
Use
the
following list to see that nothing was over looked.
Have
all braze joints on refrigerant lines been
leaked checked?
Have base valves been opened?
Have all refrigerant lines been secured and iso
-
lated properly?
Is the indoor coil drain hooked up and draining
freely? Pour water in drain pan.
Is air filter installed and clean?
Is blower motor speed set correctly?
SYSTEM OPERATION CHECK–OUT
Step
1 – With thermostat set to the OFF position, close
disconnect switch or switches to complete circuits to
condensing
unit, furnace or air handler
. Set thermostat
to
call for cooling.
Step
2 – After the system starts, check the voltage and
amperage
at the condensing unit contactor
.
Step
3 – If voltage is not within 10% of rated voltage, or
amperage
greatly exceeds nameplate amperage, shut
down
the system and contact the local power company
for corrections; otherwise unsatisfactory performance
may
result.
Step 4 – With the system in operation, check the con-
densing
unit for unusual noises and undue vibration.
Step
5 – Allow the
system tp operate until it is balanced
or stabilized (approximately 30 minutes), before mak-
ing
further check.
Remove manifold gage hoses and install cap on
Schrader
valves.
INSTALLER
After installation is complete, place unit data sheet and
installation instructions in customer packet and give to
home
owner
.
Proud
Sponsor
of
the 1998
U.S. Olympic
Team
Heating and Air Conditioning
Unitary Products Group
Post Of
fice Box 19014, Wichita, Ks. 67204
Subject to change without notice. Printed in U.S.A.
Copyright
by Unitary Products Group 1997. All Rights Reserved.
550.46–N2Y (698)
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