P/N 474131 Rev. M 8/2020 MasterTemp Pool and Spa Heater
19
SHEET
METAL
BLOCKS
Hollow masonry blocks, not less than 100 mm (4 in) thick, (laid with ends unsealed and joints
matched for air circulation). Cover blocks with 0.75 mm (0.03 in) minimum galvanized sheet metal.
150 mm
(6 in) Min.
BASE FOR USE ON
COMBUSTIBLE FLOORS
150 mm
(6 in) Min.
Masonary blocks
100 mm (4 in) thick minimum
NOTE: The minimum value approved for input adjust-
ment. Do not exceed the maximum supply pressure.
All readings must be taken while heater is operating.
Any adjustments or readings made while heater is off
will result in performance problems.
GAS PRESSURE
MINIMUM
MAXIMUM
NATURAL GAS
1.13 KPA
6.0 KPA
PROPANE GAS
2.75 KPA
6.0 KPA
OUTDOOR INSTALLATION
For heaters located outdoors, using the built-in stackless venting system.
DANGER
CARBON MONOXIDE GAS IS DEADLY –
Exhaust from this pool heater contains carbon monoxide, a dangerous, poisonous
gas you cannot see or smell. Symptoms of carbon monoxide exposure or poisoning include dizziness, headache, nausea,
weakness, sleepiness, muscular twitching, vomiting and inability to think clearly. IF YOU EXPERIENCE ANY OF THE ABOVE
SYMPTOMS, IMMEDIATELY TURN OFF THE POOL HEATER, LEAVE THE VICINITY OF THE POOL OR SPA AND GET INTO
FRESH AIR IMMEDIATELY. THE POOL HEATER MUST BE THOROUGHLY TESTED BY A GAS PROFESSIONAL BEFORE
RESUMING OPERATION.
EXCESSIVE CARBON MONOXIDE EXPOSURE CAN CAUSE BRAIN DAMAGE OR DEATH.
WARNING
Risk of explosion if a unit burning propane gas is installed in a pit or other low spot.
Propane is heavier than air. Do not
install the heater using propane in pits or other locations where gas might collect. Consult your local building code officials to
determine installation requirements and specific installation restrictions of the heater relative to propane storage tanks and filling
equipment. Installation must meet the requirements for the Standard for the Storage and Handling of Liquid Petroleum Gases.
Consult local codes and fire protection authorities about specific installation restrictions.
Locate the heater in an open, unroofed area and on a level surface
that is protected from drainage or run-off. Install the heater in an area
where leaves or other debris will not collect on or around the heater.
It is recommended that a non-combustible base be a platform under
the heater constructed of hollow masonry blocks, not less than 100
millimeters (mm) thick (laid with ends unsealed and joints matched
for air circulation). Cover blocks with 0.75 mm (min.) galvanized
sheet metal, see Figure 12.
To avoid damage to the electronic components in the heater, take
care to prevent prolonged exposure to driving sources of water
(such as lawn sprinklers, heavy roof runoff, hoses, etc.). Avoid
operation in persistent, extreme, moist or salty environments.
In extreme weather, shut down the heater and disconnect the
power to it until the weather has moderated. In areas subject to
hurricanes or very high winds, purchase the Bolt Down Bracket
Kit, P/N 460738, see Figure 13.
Note 1: DO NOT locate the heater where it is exposed to a prevailing wind.
Note 2: Be sure the heater is level.
(Australia)
Lead
Anchor
For Heater mounting
bolts and clamps,
purchase separately
Bolt Down Bracket Kit,
Part No. 460738.
Figure 13.
INLET GAS PRESSURE REQUIREMENTS
Table 3.
Figure 12.
Section 1. Installation
