21
SW1
SW3
SW4
SW2
SW5
SW6
en
4. Electrical work
<Wiring for booster heater with a built-in direct cut-off thermostat>
Earth leakage
circuit breaker for
booster heater
Contactor or
relay for booster
heater
Booster heater1
Booster heater2
Direct cut-off
thermostat
Contactor or
relay for
booster heater 2
Contactor or
relay for
booster heater 2
OUT6
(TBO.5 5-6)
Earth leakage
circuit breaker for
immersion heater
Contactor or relay
for immersion
heater
Immersion heater
Direct cut-off
thermostat
OUT9
(TBO.4 5-6)
Earth leakage
circuit breaker for
booster heater
Contactor or relay
for protecting
booster heater
Indirect cut-off
thermostat
BC
(TBO.5 3-4)
Contactor or
relay for booster
heater 1
OUT6
(TBO.5 5-6)
OUT7
(TBO.5 7-8)
BHT
(TBO.5 1-2)
Booster heater1
Booster heater2
OUT7
(TBO.5 7-8)
<Wiring for booster heater with a built-in indirect cut-off thermostat>
<Wiring for immersion heater with a built-in direct cut-off thermostat>
<Fig. 4.6.1>
<Fig. 4.6.2>
<Fig. 4.6.3>
4.6 Wiring for heater
<Care to be taken when connecting a booster heater(s)>
The initial setting assumes that the connected booster heater(s) has a built-in direct cut-off thermostat. <Fig. 4.6.1>
When the connected booster heater(s) has a built-in indirect cut-off thermostat, perform wiring according to the following items. < Fig. 4.6.2>
• Connect the thermostat signal to BHT (TBO.5 1-2).
• Remove the jumper wire from connector CNBHT.
• Connect a contactor (or relay) for protecting the booster heater.
(Connect the electromagnetic coil terminals to BC (TBO.5 3-4).
*
Do not remove the jumper wire from connector CNBHT when the connected booster heater(s) has a built-in direct cut-off thermostat. < Fig. 4.6.1>
<Care to be taken when connecting an immersion heater>
The initial setting assumes that the connected immersion heater has a built-in direct cut-off thermostat. <Fig. 4.6.3>
Содержание PAC-SIF051B-E
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