Installation / Operation Instruction Manual

GENERAL
This “Flow Controlled” water heating unit is specifically
designed to take in cold water only and heat it to temperatures suitable
for the normal domestic usage up to a maximum of 140
0
F(60°C). To obtain
optimum performance and energy savings, this unit should be located as
close as possible to the point of use. This unit is supplied with compression
rings and nuts suitable for direct coupling to 1/2”(5/8 OD) copper or plastic piping.
Do not use additional screwed fittings or standard pipe dope. The use of such
materials will void the warranty.
DO NOT SOLDER PIPES WHILE THE UNIT IS INSTALLED
(serious damage to the electronic flow switch will result).
This heater must have its own independent circuit, using
a correctly rated breaker and
wires suitable for at least 75
o
C operation.
WARNING
Failure to ground this system may result in death or serious injury.
MOUNTING THE UNIT
1.
TROUBLE SHOOTING
SYMPTOM: NO HEAT INDICATOR LIGHT OFF
1) ELECTRIC SUPPLY IS OFF
Turn on the main circuit breaker.
2) NO OR LOW WATER FLOW
Ensure that the minimum flow rate to switch on your heater is met.
“ EFC-1000,9500,9000,8300 ” Models minimum flow rate = 0.75 gals.
per minute
“EFC-8000,7500,6500” Models minimum flow rate = 0.6 gals. per minute
“ EFC-6000,5500” Models minimum flow rate = 0.5 gals. per minute
Also check that the inlet filter screen is clear from any debris. This is
located in the brass inlet boss.
3) WATER CONNECTIONS ARE REVERSED
Cold water inlet = right side, hot water outlet = left side.
4) ELEMENT BURNED OUT
TURN OFF THE circuit breaker!
Using an ohmmeter test the resistance of the heating element
across the two threaded termination rods on top of the element.
The resistance reading should be under 10 ohms.
If the resistance is much greater than this value, call Technical service for
a replacement element.
SYMPTOM: NO HEAT OR LOW TEMPERATURE WITH
INDICATOR LIGHT ILLUMINATED.
1) WATER FLOW TOO HIGH
Reduce the water flow by using an outlet ball valve. See TABLE 1
for temperature rise at various flow rates.
2) INCORRECT POWER SUPPLY
Make sure that the unit is connected to the voltage supply specified
on the rating label on the the front cover of the unit.
3) ELEMENT BURNED OUT
TURN OFF THE CIRCUIT BREAKER!
Repeat the steps from paragraph 4) above.