MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide
P/N 475114 Rev. F 8/2020
26 |
Water
Pressure
Switch
Figure 26.
TO TURN OFF GAS TO APPLIANCE
1. Press the OFF button on operating control.
2. - Switch off all electric power to the unit.
-
Turn OFF the outside Manual Shut-Off Valve (Figure 34).
3. Remove the access door panels, see Figure 1.
4. Replace the Access Door Panels.
Manual
Shut-off
Valve
OUTSIDE MANUAL SHUT-OFF VALVE LOCATION
OPERATING INSTRUCTIONS
1.
STOP!
Read the safety information on page iv - ix.
2. Set both pool and spa thermostats to the lowest settings.
3. Turn off all electric power to the appliance.
Turn OFF the Outside
Manual Shut-Off Valve (Figure 3.).
4. This appliance does not have a pilot. It is equipped with an ignition
device which automatically lights the burner. Do not try to light the
burner by hand.
5. Remove the access door panels by unfastening the two (2) screws
located on each door, then lift up and out from the bottom of the panel
to remove. If necessary, the screws may be used as handles,
see Figure 33.
6. Wait five (5) minutes to clear out any gas. If you then smell gas,
STOP!
Follow “B” in the “Before Start-up” instructions (page 1).
If you don’t smell gas, go to the next step.
7.
Turn ON the outside Manual Shut-Off Valve (Figure 34).
8. Replace the Door Access Panels. All panels must be in place when
operating the heater.
9. Set 3-way valves on inlet and outlet to pool or spa, as appropriate.
10. Turn on all electric power to the appliance.
11. Press either the POOL ON or SPA ON button switch on the operating control.
12. Set the thermostat to desired setting (
NOTICE:
Set point must be above actual water temperature or burner will not
fire). See “OPERATING THE CONTROL PANEL”
(see Figure 2 and page ix).
13. The blower should come on immediately, and after about 20 seconds, the burner should fire. When operating for
the first time, the burner may not fire on the first try because of air in the gas line. If it does not fire at first, push the
OFF switch, wait five minutes, and again push the POOL or SPA ON switch. The burner should fire after about 20
seconds. You may have to repeat this until all of the air has cleared the gas line.
14. The burner should fire until the pool/spa temperature reaches the desired temperature set on the thermostat. The
blower will continue to run for about 45 seconds after the burner shuts off. If any of the safety interlocks should
open during burner operation, the burner shuts off immediately, but the blower continues to run for about 45
seconds. Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the
appliance.
15. If the appliance will not operate, follow the instructions below “TO TURN OFF GAS TO THE APPLIANCE”, and
call your service technician or gas supplier.
Figure 34.
Figure 33.
Section 2. Operation
