Pentair ULTRATEMP HXi, Owner'S Manual

Page: 14 / 40

Page 14
Multiple Heater Type Installation
The Pentair UltraTemp heat pump may be used in conjunction with a gas or electric heater or any
combination of heat sources including solar. When using multiple heater types, all heat sources
should be plumbed in series to work correctly and efficiently. A recommended plumbing layout for a
heat pump / heater / solar combination heating system for a pool / spa combination is shown below.
Your system may not contain all of these components, but the basic plumbing will apply by eliminating
the component in the illustration that is not a part of your system. Each heater should be activated
electronically and not operated simultaneously.
GAS
HEATER
F R OM SOLAR
FI LTE R
S
A
SPA
INTAKE
POOL
RETURN
SPA
RETURN
POOL
RETURN
S P
M
12"
min.
(305 mm)
HEAT PUMP
CHECK
VALVE
FROM SOLAR
TO SOLAR
PUMP
POOL
DRAIN
SPA
DRAIN
CHECK
VALVE
SPA
MAKE-UP
Figure 8: Multiple Heat Source Configuration
Multiple Heat Pump Installation
When installing multiple heat pumps, they shall be plumbed in parallel in accordance with the below
figure.
Extend 300mm
past heater inlet
for hydraulic
balancing.
Flow Meter
50mm Pipe
Flow Meter
To Pool
Check vlaves
will help with
system balancing
250mm
80mm Pipe
Clearance for
service access.
250mm
50mm Pipe 50mm Pipe
80mm Pipe
50mm Pipe
Extend 300mm
past heater inlet
for hydraulic
balancing.
Ball-valves for bypass
and isolation
From Pump/Filter
Figure 9: Multiple Heat Pumps Configuration
Installation