Owner's manual
3
LP-21A Rev. 3.24.14
PART 2 – PREPARE THE WATER HEATER ........................................................................................................... 4
A. DIMENSIONS AND SPECIFICATIONS .................................................................................................................... 4
B. LOCATING THE WATER HEATER .......................................................................................................................... 4
PART 3 – HEATER PIPING ...................................................................................................................................... 5
A. PIPING TO THE POOL FILTER ............................................................................................................................... 5
B. PIPING TO THE BOILER .......................................................................................................................................... 5
C. PIPING DETAIL ........................................................................................................................................................ 6
PART 4 – HEATER CONTROL ................................................................................................................................. 6
A. WIRING THE CONTROL .......................................................................................................................................... 6
B. SENSOR INSTALLATION ........................................................................................................................................ 7
PART 5 – SIZING THE POOL HEATER ................................................................................................................... 8
PART 6 – MAINTENANCE ........................................................................................................................................ 8
HTP CUSTOMER INSTALLATION RECORD FORM ..................................................................................................... 9
PART 1 – GENERAL SAFETY INFORMATION
This pool heater and control are intended to be connected to an existing/new boiler. Basic operation requires a boiler that
has adequate BTU capacity and a properly sized circulator to transfer the BTUs to the pool heater.
An optional control is available to monitor pool water temperature when the pool filter pump is on. This system won’t
operate if the boiler or pool filter pump is not operating.
Optional pool control with sensor and transformer – Part # SP-30-GL-235-x284
A. PRECAUTIONS
INSTALLER – Read all instructions in this manual before installing. Perform steps in the order given.
USER – This manual is for use only by a qualified heating installer/service technician. Have this heater serviced/inspected
by a qualified service technician annually.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY
DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
NOTE: If the heater is exposed to the following, do not operate until all corrective steps have been made by a qualified
serviceman:
1. FIRE
2. DAMAGE
3. WATER
Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the
consignee.
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN UNDERWATER. Immediately call a qualified service
technician.
B. WHEN SERVICING THE WATER HEATER
To avoid electric shock, disconnect electrical supply before performing maintenance.
To avoid severe burns, allow heater to cool before servicing.