Lennox International Inc. 505 - Manual (Page 7)

Page 7
EDA INSTALLATION/ SERVICE INSTRUCTIONS
INDOOR
UNIT
OUTDOOR
UNIT
air−flow
Vapor
Line
Liquid
Line
Liquid Line from
Outdoor Unit
Liquid Line to
Indoor TXV
TXV
Vapor
Line
Liquid
Line
MUST BE INSULATED
MUST BE
INSULATED
EDA
CHARGE
COMPENSATOR
7/8 X 7/8 X
3/8 TEE
UPFLOW POSITION
Electrical Inlet
To Charge
Compensator side
connection (some
applications)
Check/Flow
Restrictor to Vapor
Line Tee
Liquid Line to
Indoor TXV
Liquid Line From
Outdoor Unit
AIR
FLOW
VAPOR LINE FROM
INDOOR COIL
Figure 5
Typical Installation (Horizontal Air Handler shown)
EDA UNIT
1/4" TUBING
CONNECTION −
MUST BE ON
BOTTOM OF
COMPENSATOR
IMPORTANT!
RESTRICTOR MUST BE INSERTED WITH O−RING
END OF RESTRICTOR TOWARD EDA UNIT FITTING.
TORQUE CHATLEFF CONNECTION TO 20 FT. LBS.
CHECK/FLOW
RESTRICTOR
AND O−RING
FITTING IN
EDA UNIT
TEFLON SEAL
USE REDUCER(S)
FROM CHARGE
COMPENSATOR KIT
(WHEN REQUIRED)
6 ft. max.
BETWEEN CHARGE
COMPENSATOR AND EDA USING
1/4" LINE PROVIDED IN CHARGE
COMPENSATOR KIT
2 ft. max.
DROP TO CHARGE
COMPENSATOR
CHARGE
COMPENSATOR
7/8 X 7/8 X
3/8 TEE
LIQUID LINE FROM
OUTDOOR UNIT
TYPICAL HORIZONTAL POSITION INSTALLATION
VAPOR LINE
FROM
OUTDOOR
UNIT
1/4" TUBING
CONNECTION − MUST
BE AT LOWEST POINT
OF THE COMPENSATOR
ELECTRICAL
INLET
TO CHARGE
COMPENSATOR SIDE
CONNECTION
CHECK/FLOW
RESTRICTOR TO
VAPOR LINE TEE
LIQUID LINE
TO INDOOR
TXV
VAPOR
LINE
FROM
INDOOR
COIL
Charge
Compensator
Details
USE REDUCER(S) FROM
CHARGE COMPENSATOR KIT
(WHEN REQUIRED)
TO CHECK/FLOW
RESTRICTOR ON EDA
USE REDUCER(S)
FROM CHARGE
COMPENSATOR KIT
(WHEN REQUIRED)
TO CHECK/FLOW
RESTRICTOR ON EDA
Check/Flow-
Restrictor
Details
1/4" PORT MUST
BE BRAZED
CLOSED
NO CHARGE
COMPENSATOR
OR 1/4" LINE
VAPOR LINE FROM
OUTDOOR UNIT
System without
compensator