Water Chemistry
Proper chemical balances are necessary for sanitary
bathing conditions as well as ensuring your heat
pump's long life.
Be sure to keep your chemical and mineral
concentration levels within the values indicated in the
table below. Failure to maintain proper water chemistry
may cause damage to the UltraTemp
may void the warranty.
Optimal Water Chemistry Ranges
Test
Free Chlorine or
Bromine
pH
Total Alkalinity (TA)
Calcium, Lithium, and
Sodium Hydrochlorite
Total Alkalinity (TA)
Sodium Dichlor, Trichlor, Chlorine
Gas, and Bromine Compounds
Calcium Hardness (CH)
Cyanuric Acid
Total Dissolved Solids (TDS)
Copper
* Concentration levels taken from "Basic Pool and Spa Technology"
published by NSPI (National Spa and Pool Institute).
Winterizing
Failure to properly winterize could damage
equipment and will void the warranty. Ensure both
the inlet and outlet union are completely disconnected from the heat
pump and that plumbing connections are positioned so that all water
can freely drain from the heat pump.
In areas where freezing temperatures occur, you
should protect your pump, filter, and heat pump
from the elements. Perform the following steps to
completely drain the heat pump.
1. Turn off the electrical power to the heat pump at
the main breaker panel.
2. Shut off the water supply to the heat pump.
3. Disconnect the water inlet and outlet unions
located on opposite sides of the heat pump.
4. Cover only the top of the heat pump to prevent
debris from falling into the unit. Do not wrap the
sides of the heat pump with any plastic or other
material that will retain heat or moisture inside the
unit.
Heat Pump and
®
Recommended Level
1.0 to 3.0 ppm (3.0 to 5.0 spa)
2.0 to 4.0 ppm (3.0 to 5.0 spa)
7.4 to 7.6
80 to 100 ppm
100-120 ppm
200 to 400 ppm
30 to 50 ppm
Less than 2000 ppm
0 ppm
Spring Start Up
If your heat pump has been winterized, perform the
following steps when starting the system in the Spring:
1. Uncover the heat pump and inspect the top and
sides for any debris or structural problems.
2. Connect the water inlet and outlet unions on the
sides of the heat pump.
3. Turn on the filter pump to supply water to the heat
pump. Open the filter air bleeder and circulate
water through the system long enough to bleed all
the air out of the pool system. Check for leaks in
and around the heat pump.
4. Turn on the electrical power to the heat pump at
the main breaker panel.
Inspection and Service
Pentair Heat Pumps are designed and constructed
to provide long performance life when installed and
operated properly under normal conditions.
Periodic inspections are important to keep your heat
pump running safely and efficiently through the years.
Failure to properly maintain your unit can void the
warranty.
Winterizing Plumbing Connections
ULTRATEMP
Heat Pump Installation and User' s Guide
®
MAINTENANCE
23