Control Wiring Diagrams - Johnson Controls YORK YHMH 20 Notice D'instructions

CONTROL WIRING DIAGRAMS

YHMY range – electrical connections
Terminal arrangement
Electrical connections with York wall-mounted controls
• Manual switchover of the 3 fan speeds
• Manual switchover of the season cycle (SUM-WINT)
• Fan thermostation (ON-OFF)
• Water valve thermostation(ON-OFF) (continual ventilation)
• Possibility of applying the minimum TME sensor
• Possibility of controlling season cycle switchover (SUM-
WINT) either through a remote electric phase signal (cen-
tral) or in the automatic mode with a built-in CHANGEO-
VER switch in contact with the water pipework (two-pipe
system); for this set-up the jumper on the control board
must be re-positioned (see instruction sheet accompany-
ing the control).
TR without valves
1 2 3 4 5 6 7
MC1
TR
N
L
PE
• Identical features to the TR, but with the addition of:
• Manual switchover of the 3 fan speeds
• Fan thermostation (ON-OFF)
• Water valve thermostation (ON-OFF)
• Thermostation(ON-OFF) on the valves and motor simul-
taneously
• Automatic Summer/Winter changeover through a remo-te
electric phase signal (central) or in the automatic mode
with a built-in CHANGEOVER switch in contact with the
water pipework (two-pipe system).
ATR without valves
1 2 3 4 5 6
MC1
ATR
N
L
PE
YHMY
5 4 2 N
CH
8 1 2 1 2
MC2 MC3
YHMY
5 4 2 N
CH
1 2 1 2
MC2 MC3
YHMY
5 4 2 N
Minimum speed
Medium speed
Maximum speed
Identification
TR
TR with 1 valve
1 2 3 4 5 6 7 8 1 2
MC1 MC2
TR
N
L
PE
Identification
ATR
ATR with 1 valve
1 2 3 4 5 6 1 2
MC1
ATR
N
L
PE
General
20°
°C
Code
9060541
YHMY
5 4 2 N
E
CH
1 2
MC3
20°
°C
Code
9060542
YHMY
5 4 2 N
E
CH
1 2
MC2 MC3
GB
7