Coates 6ILS 5.5 kW User Manual

IN-LINE HEATER

INSTALLATION, OPERATION

AND MAINTENANCE

MODELS:

6ILS

5.5 kW

240V SINGLE PHASE

BEFORE YOU BEGIN

CHECK ALL ELECTRICAL CONNECTIONS TO ALL COMPONENTS

WITHIN THE HEATER FOR TIGHTNESS. CONNECTIONS CAN

BECOME LOOSE DURING SHIPMENT AND HANDLING.

CAUTION

THE ELECTRICAL INSTALLATION MUST BE IN ACCORDANCE

WITH ARTICLE 680 OF THE NATIONAL ELECTRICAL CODE.

WARNING

Only qualified personnel, as defined by National Electric Code Article

100, should install and maintain this equipment. Unauthorized

alteration or improper maintenance of this unit may release the
manufacturer from any warranty claims. The installation must be in
accordance with the instructions in this manual and applicable local

plumbing and electrical codes.

Publication 4/09

1.0 DESCRIPTION

Coates Spa Heaters are intended for use on spas or
hot tubs having a forced water circulation system.

The water flow through the heater should be at least
15 GPM but should not exceed 70 GPM. Higher
flow may damage the heater. An external bypass
should be installed to limit the flow to within this
range.

2.0 INSTALLATION

Only qualified personnel, as defined by National
Electric Code Article 100, should install and
maintain this equipment. Unauthorized alteration
or improper maintenance of this unit may release
the manufacturer from any warranty claims. The
installation must be in accordance with the
instructions in this manual and applicable local
plumbing and electrical codes.

WARNING

CHECK ELECTRICAL CONNECTIONS TO ALL
COMPONENTS within the heater for tightness.
These can become loose during shipment and
handling.

2.1 PHYSICAL PLACEMENT

CAUTION

THE ELECTRICAL INSTALLATION MUST BE IN
ACCORDANCE WITH ARTICLE 680 OF THE
NATIONAL ELECTRICAL CODE (NEC).

The Coates Spa Heater is suitable for indoor
installation. See Figure 1 for piping connections
and Figure 2 for electrical connections. Leave

minimum clearance of 4 inches on the top for
element removal and service access.

2.2 ELECTRICAL INSTALLATION

The electrical supply power must be single phase,
2 wire, 240 VAC. The supply must be protected
by a ground fault circuit interrupter (GFCI) in
accordance with NEC Article 680. An electrical
disconnect with over-current protection must be
provided. An insulated ground conductor must be
provided. See Figure 2 for electrical connections.
A lug has been provided for attachment of the
BONDING wire per the NEC Article 680-22, (a)(4).
This lug is located next to the conduit entrance.

** NOTICE **

NO PRESSURE RELIEF

VALVE IS SHIPPED WITH

THIS HEATER AND NONE

IS REQUIRED PER UL

STD 1261. DO NOT
INSTALL SHUT OFF

VALVE BETWEEN THE

HEATER AND POOL OR

SPA. A CHECK VALVE IS

ACCEPTABLE AND IN

ACCORDANCE TO UL STD

1261 REVISED JULY 1983.

DO NOT INSTALL ANY SHUT-OFF
VALVE ON DISCHARGE SIDE OF
HEATER. A SWING CHECK
VALVE IS PERMITTED.

Exception
pressure relief valve is installed
between the heater and valve, the
valve may be of the shut-off (ball or
gate) type.

CAUTION

: If a 30 psi (2.1 Kg/cm2)

COATES POOL

HEATER

FIGURE 1 – PIPING DIAGRAM

DRAIN
VALVE

CHECK
VALVE

FILTER

BALL OR GATE

VALVE

PUMP

BALL OR GATE

VALVE

POOL

or

SPA