Reznor MASA Unit Installation Manual - Manual (Page 23)

Form I-COND, P/N 220746R6, Page 23
9.0 Final Checks
and Start-Up
9.1 General Comments
Assumptions: All connections are made; actual startup is imminent. Site
is clean; all excess supplies, scraps, and debris have been removed.
WARNING:
To prevent injury or death due to electrocution or contact
with moving parts, lock disconnect switch open when doing
checks prior to startup. See Hazard Levels, page 3.
9.1.1 Checklist Prior to Start-up
□
Check Clearances. All clearances must be as illustrated in Para-
graph 4.1.
□
Electrical Checks
□
Verify the electrical supply matches voltage rating of the unit.
(Refer to the rating plate.)
□
Check the wiring for loose connections or damaged wire. Be sure
to check the black molded plastic plug or terminal block on the
compressor. Tighten plugs and connections. Replace damaged
wiring. (See Paragraph 7.3 for replacement wiring requirements.)
□
Check all field wiring against the wiring diagram. Be sure all field-
installed controls are in place. Be sure that wire gauges are as
required for the electrical load. All field wiring must comply with
the National Electric Code and local regulations.
□
Be certain that the electrical entrances are sealed against the
weather.
□
Check that fuses or circuit breakers are in place and sized
correctly.
□
Be certain the manual reset on the compressor high pressure
cutoff switch is reset.
□
Check free rotation of condenser fan(s).
□
Remove all shipping supports and restraints.
□
Check field-installed refrigerant lines:
□
Verify that the filter driers shipped with the unit are installed prop-
erly in the correct circuits.
□
Verify that the refrigerant line for 1/3 circuit A on the condenser
is connected to 1/3 circuit A on the evaporator. Check that 2/3
circuit B on the condenser is connected to 2/3 circuit B on the
evaporator.
□
Verify that the thermostatic expansion valve bulbs are attached
properly to the correct suction line. See Paragraph 6.1.3.3.
□
Verify that the system has been properly evacuated and charged
with R-410A refrigerant.
□
In addition, verify that all startup checks in the air handling
manual have been completed.
IMPORTANT
On initial start-
up, fill-in the
CONDENSER
STARTUP FORM
on page 38.
Completed form
may be required
for warranty.