EMI WLHA - Manual (Page 11)

www.enviromaster.com 11 WLCA/WLHA High Wall Evaporator
piston/orifiCE instALLAtion instrUCtion
rEfriGErAnt pipinG
r
educing bushing goes here for
18,000 Btuh system match
WLH24
Any change in the diameter of the tubing
must be made at the indoor connection.
Line-set diameter is determined by the
condenser service valve size.
Use of a larger diameter liquid or suc-
tion line can harm the compressor!
Important:
Replace the existing piston (before installing the unit) with the piston
supplied in Kit Bag when any:
• WLHA24 evaporator is matched with a S1CA8000 or S1HA8000 condenser which has
an 18,000 Btuh compressor (“8” in the capacity decoding field). The piston will need
relacement only on the 18,000 Btuh zone.*
Your EMI evaporator unit contains the appropriate piston for your model. Refer to this
document to determine if a change is required based on your condenser rating. If your
match is not listed below no piston change is required. (See chart below)
propEr instALLAtion of piston/orifiCE rEpLACEmEnt
* “8
” in the capacity decoding field = 18,000 Btuh
model #
Evaporator
Condenser
Btuh
factory installed
Piston/Orifice Size
field Changeover
Piston/Orifice Size
WLHA24 S1CA8000 .059” .053”
WLHA24 S1HA8000 .059” .053”
Evaporator