Advertisement
INSTALLER'S GUIDE
CHECKOUT
PROCEDURE
After installation
has been completed,
it is recommended
that the entire system
be checked
against
the
following
list:
1. Refrigerant
Line, Leak checked
..........................................................................................................
[
]
2. Suction
Lines and Fittings properly
insulated ......................................................................................
[
]
3. Have all Refrigerant
Lines been secured
and isolated
properly?
........................................................
[
]
4. Have passages
through
masonry
been sealed?
If mortar is used, prevent
mortar from
coming
into direct contact with copper tubing
.....................................................................................
[
]
5. Indoor coil drain line drains freely.
Pour water into drain pan .............................................................
[
]
6. Supply
registers
and return grilles open and unobstructed
.................................................................
[
]
7. Return air filter installed
......................................................................................................................
[
]
8. Thermostat
thermometer
is accurate.
Check against
a reliable thermometer.
Adjust
per instructions
with thermostat
..........................................................................................................
[
]
9. Is correct speed tap being used? (Indoor
blower
motor) ....................................................................
[
]
SYSTEM
OPERATIONAL
CHECK
IMPORTANT:
To prevent compressor
damage
which may result from the presence of LIQUID refrigerant
in the
crankcase, these procedures should be followed at initial Start-Up and at anytime the power has been offfor 12 hours
or more.
1. Before proceeding
with this "Operational
Check," go to "Compressor
Sump Heat Section" of this instruction to
determine
the time compressor
heat has been "ON," and make entry d the designated
lines, in Step 2.
2. Start-Up Time
A.M./P.M.
Power Applied Time
A.M./P.M.
Time Lapse
Hours
Minutes.
3. If Steps 1 and 2 cannot be used, then place thermostat's
system switch in the "OFF" position and apply power
by closing system
disconnect
switch.
This energizes
compressor
heat and evaporates
the liquid in the
crankcase.
TO EVAPORATE
LIQUID ALLOW AT LEAST ONE-HALF
HOUR PER POUND (HCFC-22),
AS
SHOWN
ON UNIT NAMEPLATE.
OPERATING
PRESSURES:
After the unit has operated
in the cooling mode for a short period of time, install
pressure gauges on the gauge ports of the discharge and suction line valves. Check the suction and discharge
pressures
and compare them to the normal operating
pressures
provided
in the unit's Service Facts.
NOTE: Use the pressures from Service Facts to determine the unit refrigerant
charge.
To charge
the system
accurately,
use superheat
charging,
or pressures
depending
on flow control.
4. Except as required for safety while servicing:
DO NOT OPEN SYSTEM
DISCONNECT
SWITCH.
SUPPLEMENTARY
HEATERS CHECKOUT
PROCEDURES,
IF USED
DOES HEATER
REQUIRE A SEPARATE
CIRCUIT?
1. Be sure the fused disconnect
switch is "OFF," and safety label (if any) is attached
................................
[
]
2. Check on field wiring for sound connections
and grounding
according to codes ....................................
[
]
3. Check fuses for proper size per nameplate
specifications
.....................................................................
[
]
4. Check control box panel -- in place and secured ..................................................................................
[
]
NOTE:
OPERATION
OF HEATERS
MUST BE CHECKED
DURING THE OPERATION
CHECKOF
THE TOTAL
SYSTEM.
Pub. No. 18-AC34D1-5
PAGE 7
Advertisement
