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Ascento Group Australia
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AI.062020
P: 1800 807 604
INSTALLATION INSTRUCTIONS
RM1500-2 | RM1600-2 VALVES
INTRODUCTION
The RM1500-2 and RM1600-2 Valves are fully automatic mechanical rainwater/mains water changeover devices designed for pressure pump supply
systems for harvesting rainwater for the toilet, laundry and household applications with automatic mains backup.
It is suitable for up to 2 toilets and washing machine and an extra tap outlet
OPERATION
The RM1500-2 and RM1600-2 Valves will always prioritize the use of rainwater over mains
water when rainwater is available and will automatically switch over to mains water in the
event of the rainwater tank running low or electrical failure.
When rainwater has been replenished or power has been restored to the pump, the RM1500-2
and RM1600-2 valves will automatically prioritize back to rainwater.
The pump is only active when rainwater is being drawn from the water tank, it does not
operate when the RM1500-2 and RM1600-2 Valve has switched to mains position.
The pump controller starts and stops the pump when it detects a demand - for example
flushing a toilet or using a washing machine.
The operating mechanism of the RM1500-2 and RM1600-2 Valves are a unique patent design,
it works by hydraulic water pressure created by the pump to close one inlet fully before
opening the other inlet. This ensures an extremely reliable mechanism using few moving parts
and no electronic components and no energy consumption.
FEATURES
• Easy to install
• Patent design
• Solid Brass mounting bracket (optional)
• Watermark approved to WMTS477/LN60075
• Does not require regular maintenance
• No electrical consumption - No electronic
components
• Solid brass construction - Fully weatherproof -Built
to last
• Suitable for any pressure pump with sufficient head
pressure
• Can be mounted in any position
• Built-in dual check valve for backflow prevention
• 2 Year warranty
3
- RM1600-2
600
500
400
300
200
100
Pressure drop [kPa]
0
10
15
20
25
30
Pressure drop vs flow rate – Main inlet side
35
40
45
Flow Rate [L/min]
Pressure drop verssus flow rate between the mains water inlet side and the outlet of the device
Pressure drop verssus flow rate between the rainwater inlet side and the outlet of the device
40
35
30
25
20
15
10
5
Pressure drop [kPa]
0
10
15
20
25
Pressure drop vs flow rate – Pump inlet side
35
40
50
45
30
Flow Rate [L/min]
3
- RM1600-2
600
500
400
300
200
100
Pressure drop [kPa]
0
10
15
20
25
30
Pressure drop vs flow rate – Main inlet side
35
40
45
Flow Rate [L/min]
Pressure drop verssus flow rate between the mains water inlet side and the outlet of the device
Pressure drop verssus flow rate between the rainwater inlet side and the outlet of the device
40
35
30
25
20
15
10
5
Pressure drop [kPa]
0
10
15
20
25
Pressure drop vs flow rate – Pump inlet side
35
40
50
45
30
Flow Rate [L/min]
CONNECTION
All plumbing connections should be carried out by a licensed plumber.
Step 1.
The RM1500-2 or RM1600-2 Valve is fitted onto the pump controller as shown in Fig 1. Lock up the 1” BSP F loose nut with the rubber washer supplied, do not
over tighten.
Step 2.
Connect mains water to the RM1500-2 or RM1600-2 Fig 2.
Step 3.
Connect outlet to the premises.
Fig 3.
Shows a typical installation for a submersible pump.
Fig 4.
Shows the RM1500-2 or RM1600-2 mounted to the wall/ other surface using the optional bracket
NOTE:
The RM1500-2 or RM1600-2 Valve can be installed in any position and location, it does not require to be installed on the pump as shown in diagram. Connection
of the pump should be carried out to manufacturer’s instructions, it is recommended that a Y-Strainer be fitted between the tank and pump.
1" BSP F Loose Nut
Rubber Washer
Pressure Controller
Pump
AcquaSaver
Valve
Fig. 1
Power On
Pump On
Failure
Restart
PRESSCONTROL
To House
Mains Water In
AcquaSaver Valve
Fig. 2
Rainwater Tank
1" Pipe
Submersible Pump
with built in controller
AcquaSaver Valve
To House
Mains Water In
Fig. 3
Bracket
Fig. 4
1" BSP F Loose Nut
Rubber Washer
Pressure Controller
Pump
AcquaSaver
Valve
Fig. 1
Power On
Pump On
Failure
Restart
PRESSCONTROL
To House
Mains Water In
AcquaSaver Valve
Fig. 2
Rainwater Tank
1" Pipe
Submersible Pump
with built in controller
AcquaSaver Valve
To House
Mains Water In
Fig. 3
Bracket
Fig. 4
1" BSP F Loose Nut
Rubber Washer
Pressure Controller
Pump
AcquaSaver
Valve
Fig. 1
Power On
Pump On
Failure
Restart
PRESSCONTROL
To House
Mains Water In
AcquaSaver Valve
Fig. 2
Rainwater Tank
1" Pipe
Submersible Pump
with built in controller
AcquaSaver Valve
To House
Mains Water In
Fig. 3
Bracket
Fig. 4
1" BSP F Loose Nut
Rubber Washer
Pressure Controller
Pump
AcquaSaver
Valve
Fig. 1
Power On
Pump On
Failure
Restart
PRESSCONTROL
To House
Mains Water In
AcquaSaver Valve
Fig. 2
Rainwater Tank
1" Pipe
Submersible Pump
with built in controller
AcquaSaver Valve
To House
Mains Water In
Fig. 3
Bracket
Fig. 4
1" BSP F Loose Nut
Rubber Washer
Pressure Controller
Pump
AcquaSaver
Valve
Fig. 1
Power On
Pump On
Failure
Restart
PRESSCONTROL
To House
Mains Water In
AcquaSaver Valve
Fig. 2
Rainwater Tank
1" Pipe
Submersible Pump
with built in controller
AcquaSaver Valve
To House
Mains Water In
Fig. 3
Bracket
Fig. 4
