BELOW POOL INSTALLATION
If the heater is below water level, the pressure switch must be adjusted. This adjustment must
be done by a qualified service technician. See following
CAUTION before installation
.
BELOW OR ABOVE POOL INSTALLATION
The WATER PRESSURE RELIEF VALVE SWITCH is set in the factory at 21 kPa (± 5
kPa) (3 ± 0.7 psi). This setting is for a heater installed at pool level. If the heater is to
be installed more than 0.3 m (1ft.) above or below, the water pressure switch must be
adjusted by a qualified service technician. See page 35 Figure 30.
!
CAUTION
FLOW SWITCH INSTALLATION
If the heater is installed more than 1.5 m above the pool or more than 1.2 m below the
pool level, which is beyond the limits of the heater’s pressure switch specification.
In this case, a flow switch must be installed in the heater. 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 as used for the water pressure switch.
GAS CONNECTIONS
GAS LINE INSTALLATIONS
The gas supply must be installed in accordance with the Gas Installation Code,
AS/NZS.5601.1
and all applicable local codes.
Before installing the gas line, be sure to check which gas the heater has been designed to burn.
This is important because different types of gas require different gas pipe sizes. The rating plate
on the heater will indicate which gas the heater is designed to burn. Table 2 below shows the
recommended gas inlet pipe sizes required for the distance from the gas meter to the heater.
The table is for natural gas at a specific gravity of .65 and propane at a specific gravity of 1.55.
When sizing gas lines, calculate 0.9 additional meters of straight pipe for every elbow used.
When installing the gas line, avoid getting dirt, grease or other foreign material in the pipe as
this may cause damage to the gas valve, which may result in heater failure.
The gas meter should be checked to make sure that it will supply enough gas to the heater and
any other appliances that may be used on the same meter. Insufficient gas supply will cause
the heater to operate below its designed performance or not at all. The gas line from the meter
will usually be of a larger size than the gas valve supplied with the heater. Therefore a reduction
of the connecting gas pipe will be necessary. Make this reduction as close to the heater as
possible. If the gas pressure is not adjusted to the correct working pressure, the heater will be
over gassed and cause serious damage within minutes. This damage is not covered under the
heater warranty.
Install a manual shut-off valve that conforms with
Type 1 or Type 2 as per AG201 and/or
AS4617
standards and a sediment trap/drip leg and union located outside the heater panels,
see Figure 15. Do not use a restrictive gas cock.
The heater and any other gas appliances must be disconnected from the gas supply piping
system during any pressure testing on that system, (greater than 6.0 kPa). The heater and its
gas connection must be leak tested before placing the heater in operation.
Do not use flame
to test the gas line.
Use soapy water or another nonflammable method.
NOTE
A manual main shut-off valve must be installed externally to the heater.
DO NOT INSTALL THE GAS LINE UNION INSIDE THE HEATER CABINET. THIS WILL VOID
YOUR WARRANTY.
!
WARNING
Heater
Size
Distance from the Meter
0 to 15 m
16 to 30 m
31 to 60 m
125
25mm
32mm
32mm
SEDIMENT TRAPS (DRIP LEG)
Install a sediment trap and union located
outside the heater panels in accordance
with current local codes. Do not use a
restrictive gas cock. The sediment trap
shall be either a tee fitting with a capped
nipple in the bottom outlet which can
be removed for cleaning, as shown in
Figure 15, or other device recognized as
an effective sediment trap. All gas piping
should be tested after installation in
accordance with current local codes.
TESTING GAS LEAKS AND GAS PRESSURE
THE TURBOTEMP HEATER IS INTENDED FOR INSTALLATION WITH A METERED GAS
PRESSURE REGULATOR. Before operating, the heater and its gas connections must be leak
tested.
Do NOT use an open flame to test for leaks.
Test all gas connections for leaks with
soapy water.
The gas valve must be completely disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of 6.0 kPa.
TESTING THE GAS PRESSURE THROUGH THE COMBINATION GAS
CONTROL VALVE.
Risk of fire and explosion.
Alteration, service, or maintenance of the Combination Gas
Control Valve can lead to fire or explosion, causing loss of life, personal injury, and/or
property damage.
DO NOT ATTEMPT TO ADJUST THE GAS CONTROL VALVE.
!
WARNING
I pg 20
Turbotemp 125 Pool and Spa Heater Installation and User’s Guide
Table 2.
Manual
Shut-off
Valve
Sediment
Trap/Drip Leg
Union
At least 22.9 cm (9")
At least 7.6 cm (3")
2.54 cm (1") Dia. or larger
(See "Recommended
Pipe Sizes" Chart
)
46-61 cm of 1.91 cm
(18–24" of 3/4")
Gas line from
Valve
Bell
Reducer
Figure 15.
