Aprilaire 1750A Installation Instructions Manual page 7

WHOlE-HOME INSTAllATION
bASEMENT DUCTING & WIRING
fIGURE 9 – Whole-Home basement Installation
DEHUMIDIFIED AIR IS SUPPLIED
DOWNSTREAM FROM A-COIL TO
MINIMIZE EVAPORATION OFF A-COIL
SUPPLY DUCT
HVAC / FURNACE
115 VAC
CIRCUIT
FLOOR DRAIN
ATTIC DUCTING & WIRING
fIGURE 11 – Whole-Home Attic Installation
DEHUMIDIFIER
DEHUMIDIFIED AIR IS
SUPPLIED DOWNSTREAM
FROM EVAPORATOR COIL TO
MINIMIZE EVAPORATION
115 VAC CIRCUIT
AIR FILTER
ACCESS
DOOR
OPTIONAL
EXTERNAL
CONTROL
LOCATED IN
PRINCIPAL
LIVING SPACE
LIVING
SPACE
Attic Installation Note:
The dehumidifier must be installed in a
secondary condensate pan with a float switch .
(CONTINUED)
A-COIL
RETURN
DUCT
AIR IS PULLED FROM
RETURN DUCT
DEHUMIDIFIER
CONDENSATE HOSE
(TO COMMON DRAIN OR OUTSIDE)
MAIN SUPPLY DUCT
HVAC EVAPORATOR COIL
HVAC / FURNACE
CONDENSATE HOSE
(TO COMMON DRAIN
OR OUTSIDE)
CONDENSATE PAN
WITH FLOAT SWITCH
Wiring Notes:
• I f wiring to a Model 70 Living Space Control, see MODEL 70 LIVING SPACE CONTROL
section on page 16 .
• I f wiring to a third-party control, see THIRD-PARTY CONTROL section on page 17.
fIGURE 10 – Whole-Home basement Wiring
THERMOSTAT
R
C
G
W
Y
90-1536 90-1537
fIGURE 12 – Whole-Home Attic Wiring
THERMOSTAT
R
MAIN
C
RETURN
DUCT G
W
Y
90-1536 90-1537
DEHUMIDIFIER
CONTROL BOARD
HVAC EQUIPMENT
R
C
G
W
Y
DEHUMIDIFIER
CONTROL BOARD
HVAC EQUIPMENT
R
C
G
W
Y
LOW VOLTAGE
NORMALLY CLOSED
FLOAT SWITCH
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