Hitachi YUTAKI S COMBI Series User Manual

Fix
This calculation mode sets the circuit’s temperature setting to a dened value, forcing the
unit to maintain it.
Variables used in these views are displayed in the following table.
REF Access Description
Default
Value
Range Steps Units Application
Notes
Points S SC S80 M
C1TA1L
Low ambient T (Circuit 1) -20 -20~6 1 ºC ○ ○ ○ ○ -
C1TA1H High ambient T (Circuit 1) 20 7~25 1 ºC ○ ○ ○ ○ -
C1TS1L Set point at low ambient T (Circuit 1) A (C1Tmin) ~ (C1Tmax) 1 ºC ○ ○ ○ ○ (*1)
C1TS1H Set point at high ambient T (Circuit 1) B (C1Tmin) ~ (C1Tmax) 1 ºC ○ ○ ○ ○ (*1)
C2TA2L Low ambient T (Circuit 2) -20 -20~6 1 ºC ○ ○ ○ ○ -
C2TA2H
High ambient T (Circuit 2) 20 7~25 1 ºC ○ ○ ○ ○ -
C2TS2L Set point at low ambient T (Circuit 2) A (C2Tmin) ~ (C2Tmax) 1 ºC ○ ○ ○ ○ (*1)
C2TS2H Set point at high ambient T (Circuit 2) B (C2Tmin) ~ (C2Tmax) 1 ºC ○ ○ ○ ○ (*1)
REF Access Description
Default
Value
Range Steps Units Application
Notes
Gradient S SC S80 M
C1OTC Gradient Curve (Circuit 1) C 0.2~2.2 0.1 - ○ ○ ○ ○ (*1)
C2OTC Gradient Curve (Circuit 2) 0.6 0.2~2.2 0.1 - ○ ○ ○ ○
REF Access Description
Default
Value
Range Steps Units Application
Notes
Fix S SC S80 M
C1TF Fixed T (Circuit 1) D (C1Tmin) ~ (C1Tmax) 1 ºC ○ ○ ○ ○ (*1)
C2TF Fixed T (Circuit 2) 40 (C2Tmin) ~ (C2Tmax) 1 ºC ○ ○ ○ ○ -
REF Access Description
Default
Value
Range Steps Units Application
Notes
Working Limits S SC S80 M
C1Tmax Maximum Supply T(Circuit 1) E 35~F 1 ºC ○ ○ ○ ○ (*1)
C1Tmin Minimum Supply T(Circuit 1) 20 20~34 1 ºC ○ ○ ○ ○
C2Tmax Maximum Supply T(Circuit 2) E 35~F 1 ºC ○ ○ ○ ○ (*1)
C2Tmin Minimum Supply T(Circuit 2) 20 20~34 1 ºC ○ ○ ○ ○
REF Access Description
Default
Value
Range Steps Units Application
Notes
Working Limits S SC S80 M
C2PBMV Proportional Band (Circuit 2) 6.0 0~20 0.2 K ○ ○ ○ ○ -
C2IRFMV Integral Reset Fact. (Circuit 2) 2.5 0.0~20 0.1 % ○ ○ ○ ○ -
C2RTMV Running Time Factor (Circuit 2) 140 10~250 10 sec ○ ○ ○ ○ -
C2OTO Over-T Offset protection (Circuit 2) 5 OFF, 3~10 1 ºC ○ ○ ○ ○ (*2)
? NOTE
• (*1): Table:
UNIT CONTROLLER
PMML0335A rev.1 - 04/2016
146

Hitachi YUTAKI S COMBI Series Specifications

General

Brand	Hitachi
Model	YUTAKI S COMBI Series
Category	Heat Pump
Language	English