EMI WLHA - Manual (Page 12)

www.enviromaster.com WLCA/WLHA High Wall Evaporator 12
rEfriGErAnt proCEssinG
Finish all pipe connecting before
proceeding to charging the system.
Follow the instructions in the outdoor
unit for line evacuation, opening service
valves, and final charge adjustments. Op-
eration charts and charge tables can be
found in the EMI Condenser IOMs.
I t i s i l l e g a l t o d i s c h a r g e
refrigerant into the atmosphere.
Use proper reclaiming methods
and equipment when installing or
servicing this unit.
1. Clean the ends of tubing and insert into
fittings.
2. Protect the valves by wrapping with a
wet rag "heat sink" before brazing.
3. We recommend the use of a shield (can
be made from some scrap metal) to
protect the paint.
4. Braze tubing into fittings.
5. Attach manifold set.
6. Evacuate line to 500 microns or less to
ensure all moisture has been removed
and there are no leaks.
7. Once certain of a good evacuation and
leak free joints, back-seat the valves
(counter-clockwise) to open and allow fac-
tory charge to fill lines and indoor unit.
h
eat sink s
hield
Manifold Vacuum Pump Micron Gage
manifold setup for Evacuation
Top discharge
condeser shown
Top discharge
condeser shown
Top discharge condeser shown
Refer to Charts in condenser manual to
“fine tune” the refrigerant charge.
WLCA30 & WLCA36 utilize a TXV (Thermo
Expansion Valve), which should be set at
10°f s
uperheat.
WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions
! ! WArninG