Amtrol Official Manual for Marine Sanitation Systems | Sizing and Installation Guide

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY

IMPORTANT GENERAL SAFETY INFORMATION -

ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.

If the control is set too high or the pump is running when the water supply is shut off and there is no demand on the system, the pump will run continuously, can overheat and become damaged, potentially resulting in product failure, leaking and/or rupture.

All wire and fuse sizings are preliminary recommendations only. For your safety, local codes, and in their absence, national codes must be followed to minimize the risk of electric shock, property damage or personal injury.

The pump motor is designed for use with single phase, 60Hz ac. Use with any other type of power will cause damage to the motor. The pump models RP-10HP, RP-15HP and RP25-HP are pre-wired for 115 vac; however, they can be rewired to be used with 230 vac. Consult motor nameplate for the wiring diagram.

The power for your pump must be on a dedicated circuit. In addition, a shut off switch should be visible and near the pump. Use a 20 amp circuit.

Before attempting any service and disassembly, shut off power to the pump. Ensure power is disconnected prior to removing motor. Ensure power is disconnected

before cleaning is attempted.

Grounding of the pump is essential for your protection and the protection of the motor. All wiring should be completed by a licensed electrician, and in accordance with

local codes or in their absence, the National Electrical Code. Before starting the wiring installation, disconnect all power to the circuit to be used for the AMTROL Pressuriser®.

The AMTROL Pressuriser® should only be connected to a municipal, cold water supply, and in systems with a minimum pressure of 10 psig at all times, measured under flow at the tap closest to the location of the AMTROL Pressuriser® installation.

Sizing Chart

	Minimum	Minimum	Minimum
Amtrol	Flow Rate	Flow Pressure		Water
			Incoming
Pressuriser®	From City	From City		Meter
	Supply	Supply	Pipe Size
RP-10HP	10 gpm	10 psig	3/4"	3/4"
RP-15HP	15 gpm	10 psig	1"	1"
RP-25HP	25 gpm	10 psig	1 1/4"	1 1/4"

Metal piping must be used for all inlet and outlet lines to the unit.

Do not oversize pump. Inadequate water supply will result in poor performance and pump damages.

Pre-Installation

•DO NOT USE FOR PRE-HEATED WATER SUPPLIES;

•DO NOT USE FOR ANYTHING EXCEPT COLD WATER (AMBIENT TEMPERATURE NOT TO EXCEED 100° F);

•DO NOT USE IN SYSTEMS WHERE LOW PRESSURE IS

DUE TO LEAKS OR WHERE LEAKS IN THE PLUMBING

SYSTEM MAY EXIST;

•DO NOT USE IN SYSTEMS WHERE THE WATER SUPPLY CAN DROP BELOW 10 PSIG;

•DO NOT USE IN SERIES WITH ANOTHER PUMP (SUCH AS IN PRIVATE WELL WATER SYSTEMS);

•DO NOT RE-PRESSURIZED TANK AFTER INITIAL INSTALLATION;

•DO NOT PIPE EXCEPT WITH METAL PIPING AT INLET

AND OUTLETS.

The system must be placed indoors only on a solid level surface with a drip pan piped to a drain with adequate capacity for large volumes of water in the event the system ruptures or fails. Consider the risks posed by tanks under pressure and the potential for leaking and/or flooding damage in selecting the location. The unit must not be placed in an environment that would expose the water in the tank to temperatures below freezing or in

excess of 100° F. Figure 1

Installation

1.Remove protective air valve cap.

2.Check pre-charge pressure (pressure should be + or – 10% of the factory setting). Factory pre-charge is 38 psig.

3.Release or add air as necessary to make the pre-charge pressure 2 psig below the pressure switch pump cut-in setting.

4.Replace protective air valve cap. (Remove air valve label, replace protective air valve cap, peel off backing of label and apply on air valve cap.)

MINIMUM SUPPLY LINE AND METER SIZE FOR THE RP-10HP IS 3/4", THE RP-15HP IS 1" AND THE RP-25HP IS 11/4". THIS APPLIES TO ALL LINES INCLUDING

THOSE USED WITH THE WATER METER OR FITTINGS BEFORE THE PUMP. CONTACT FACTORY IF MINIMUM FITTING/LINE SIZE IS BELOW THE ABOVE NUMBERS.

5. Install a SPRING LOADED CHECK VALVE in the city supply line on the suction side of the pump along with a shut-off valve. Failure to do so will result in premature failure of the AMTROL Pressuriser due to excessive pump cycling.

6. Install a by-pass loop (Figure 2).

Figure 2

BYPASS	TO SYSTEM	RP-10HP
LOOP		RP-15HP
	FLOW	RP-25HP
	SHUT-OFF
	VALVES
	PRESSURE
	RELIEF
	VALVE
CITY
WATER
SUPPLY
SPRING	FLOW
CHECK VALVE

Be sure to leave a minimal clearance of 12” around the unit for access should field adjustments be necessary in the future and to permit maintenance and inspection (Figure 1).

12"

Amtrol Pressuriser®

7.Pipe the city supply after the shut-off valve to the suction side of the pump, as shown.

8.Connect the house supply line using a 100 psig maximum relief valve as shown (Figure 2). It is important that the pressure relief valve be installed on the pump discharge prior to any shut off valves.