Haier CA0130EAND [22/42] Caution

Installation

■ Type Selection of Auxiliary Electric Heater

According to engineering requirements, it is recommended that one set of auxiliary electric heater be used as

standby system, which is started to keep water temperature of the unit in case of defrosting or temporary fault of

such equipment.

Considerations on type selection of auxiliary electric heater mainly include the minimum average outdoor ambient

temperature in winter and the capacity of standby system. Based upon the local minimum average ambient

temperature in winter and the water outlet temperature of the unit, the unit capacity attenuation Q2 can be

obtained via comparison between the capacity Q1 from the "Performance Correction Curves" and the nominal

capacity Q of the unit.

Q2 = Q - Q1

The capacity of auxiliary electric heater generally selected, W

W = a* Q2 = a*(Q - Q1)

In which, a refers to margin coefcient, taking between 1.0 and 1.5, and it is larger in northern area, e.g.

taking 1.5 in Hubei province and its northern area.

CAUTION

■ In heating mode, the unit capacity may drop with the decreasing ambient temperature, thus users shall add the

auxiliary electric heater at the hot water side for the areas under the low average outdoor ambient temperature

in winter, otherwise the unit performance may be affected.

■ The breaker with sufcient capacity must be arranged at the entry of power cord. Such breaker shall be

protected against short circuit and earth fault, and its contact spacing is at least 3mm.

Please install it by yourself.

Breaker

Master unit

Slave unit 1 Slave unit 15

Breaker

R R

S S S

T T T

N N N

■ Electrical Connection

1. Connection diagram of the unit power cords