Plumbing Connections; Plumbing/Valves; Manual Bypass; Below Pool Installation - Pentair Hot Tub User Manual

Installation (contd.)
POOL
MANUAL
ISOLATION
3
HEATER BY-PASS
VALVE
CHECK
1
VALVE
ISOLATION
VALVE
1 Optional.
2 Required when installation is below water level.
Required when flow rates exceed 120 gpm.
3

PLUMBING CONNECTIONS

The MiniMax CH heater has the unique capability of
®
direct schedule 40 PVC plumbing connections.
CAUTION
Before operating the heater on a new installation,
turn on the circulation pump and bleed all the air
from the filter using the air relief valve on top of the
filter. Water should flow freely through the heater.
Do not operate the heater unless water in the pool/
spa is at the proper level.
PLUMBING
VALVES
When any equipment is located below the surface
of the pool or spa, valves should be placed in the
circulation piping system to isolate the equipment
from the pool or spa.
Check valves are recommended to prevent back
siphon.
CAUTION
Exercise care when installing chemical feeders so
as to not allow back siphoning of chemical into the
heater, filters or pump. When chemical feeders are
installed in the circulation of the piping system,
make sure the feeder outlet line is down stream of
the heater, and is equipped with a positive seal
non-corrosive "Check Valve", (P/N R172288),
between the feeder and heater.
P/N 472128
PUMP
TO
POOL
FILTER
CHECK
2
VALVE
FROM
POOL
Figure 10.
MANUAL BY-PASS
Where the flow rate exceeds the maximum 120
GPM, a manual bypass should be installed and
adjusted. After adjustments are made, the valve
handle should be removed to avoid tampering.
M o d l e
1 5 0
2 0 0
2 5 0
3 0 0
3 5 0
4 0 0
* D o n t o e x c e e d h t e
f o l w a r e t f r o h t e c o n

BELOW POOL INSTALLATION

If the heater is below water level, the pressure
switch should be adjusted. This adjustment must
be done by a qualified service technician.
See following CAUTION.
CAUTION
BELOW OR ABOVE POOL INSTALLATION
The water pressure switch is set in the factory at 1½
PSI. This setting is for a heater installed at pool level or
within 3' above or 3' below. If the heater is to be installed
more that 3' above or 3' below, the water pressure switch
must be adjusted by a qualified service technician.
FLOW SWITCH
If the heater is installed more the 6' above the pool or
more than 10' below the pool level, you will be beyond
the limits of the pressure switch and a flow switch must
be installed. Locate and install the flow switch externally
on the outlet piping from the heater, as close as possible
to the heater. Connect the flow switch wires in place of
the water pressure switch wires.
10
M i . n M a x * .
2 0 1 2 0
2 0 1 2 0
3 0 1 2 0
3 0 1 2 0
4 0 1 2 0
4 0 1 2 0
m a i x m u m e r c o m m e n d e d
n e t c n i g p p i n i . g
Table 6.
Rev. E 11-5-07