Aquacal 156 User Manual

42

For proper operation and maximum efficiency, piping coming from the pump and filter MUST be con-
nected to the "IN" port of the heater. Likewise, connect piping returning to the pool/spa to the "OUT"
port of the heater. See drawing below.

From Pump/Filter

Return to Pool/Spa 

H

EAT

 P

UMP WITH

 G

AS

 H

EATER

 B

ACK

 U

P

M

ULTIPLE

 H

EAT

 P

UMP

 I

NSTALLATION

M

INIMUM

 30 GPM 

TO

E

ACH

 H

EATER

M

INIUM

 S

PACING

 24-I

NCHES