Waterco Portapac / Delta Hot
I pg 07
OPERATION – AIR SWITCH MODELS
Demand & Demand Elite
MANUAL OPERATION
Demand and Demand Elite Portapac models are controlled by an adjustable thermostat and a
four-stage sequential “air switch”. The button for the air switch will most likely be located on
the spa coping or timber cabinet.
When switched on at the power supply the Portapac will default into Demand Mode. Demand
Mode is also the 4th press of the button.
Fully depress the “air switch” button and the Portapac will change modes in the following
sequence:
Press 1 - STANDBY Mode.
Power is supplied to the Portapac but the pump, heater and blower are switched off. The power
indicator light will be illuminated on the side of the control box.
Press 2 - PUMP Mode.
The Pump is switched on. The heater will automatically switch on whenever the spa temperature
drops by approximately 2°C below the preset temperature. The preset temperature is set using
the dial on the Portapac control box.
Press 3 - BLOWER Mode.
The blower is switched on and the heater is switched off. The pump remains operational.
The heater is switched off to compensate for the electrical load drawn by the blower. This is
commonly called “load shedding”.
Press 4 - DEMAND Mode.
The blower is switched off. When the spa temperature drops by approximately 2°C both the
pump and heater will automatically switch on to heat the spa to the preset temperature. The
preset temperature is set using the dial on the control box of the Portapac.
Demand Mode is best suited for when the spa is not being used. The Demand Cycle will keep
the water at the desired temperature 24 hours a day. In some spa pool applications this may be
more efficient than warming the water from cold each time the spa is used.
Note: The use of a spa cover or blanket will help maintain spa temperature and greatly
improve the efficiency of the Portapac.
Do not run the Portapac dry. Doing so may cause serious damage to the pump and will void
the warranty.
!
WARNING
