Carrier 38AQ034 - Manual (Page 6)

START-UP
Before Starting Unit, check the following:
1. Compressor oil level must be visible in the compressor
oil sight glass. Add oil if necessary. (See Oil Charge.)
2. Compressor hold-down bolts must be snug but not
tight.
3. All internal wiring connections must be tight; all
barriers and covers must be in place.
4. Electrical power sources must agree with unit name­
plate rating.
5. All service valves must be open.
6. Crankcase heater must be firmly locked into com­
pressor erankcase. Crankcase heater is inserted at the
factory with thermal conductive grease.
Evacuate and Dehydrate entire refrigerant system
as described in the Carrier Standard Service Techniques
Manual, Chapter 1, Section 1-7.
Leak Test entire refrigerant system by the pressure
method described in the Carrier Standard Service Tech­
niques
Manual, Chapter 1, Section 1-6. Use refrigerant
specified for unit at approximately 25 psig backed up with
an inert gas to a total pressure not to exceed 200 psig.
Energize Branch Circuit — Close field disconnect
switch to energize compressor crankcase heater. Set
room thermostat to prevent unit(s) from starting at this
time.
Heating/Cooling Thermostat (HH07AT072)
has an adjustable heat anticipator for both first- and
second-stage heating circuits.
SETTINGS — Set adjustment lever for first-stage anti­
cipator at 0.79 (left-hand side). Set adjustment lever for
second-stage anticipator at 0.42 (right-hand side).
NOTES:
1 All 3 outdoor fans must be operating
2 To be used with approved 40RR combinations only
3 Applies to all approved combinations
Fig. 8 — Cooling Cycle Charging Chart, 40RR/38AQ024