BENSON RS UHA, Assembly And Use Manual

Page: 13 / 40

Type 6-7
IGN2
EA2
EF
SE
J4 J8
IGN1
PA
COM COM
NA NC
ION
EA1
J1
1
J1
7
J2
J1
4
VM
TA
J1
6
J13
J7
RSTR
MS
EVG
2-
I°
EVG
1-
I°
EVG
2-
II
°
EVG
1-
II
°
RST
LL
LB
LF
J10
J9 J12
SND
LM
TR
J15
J1
8
J1
IMT
J6
230V
~
50
H
z
NL
F2
F1
N
J5
II°
I°
SF
C
FAN 1
C
FAN 2 FAN 3
C
KEY:
SND Temperature probe
TR Regulatory control thermostat (auto
reset)
LM LIMIT thermostat (Manual reset)
EVG1-I° Gas solenoid valve 1
EVG1-II° Second stage gas valve 1
EVG2-I° Gas solenoid valve 2
EVG2-II° Second stage gas valve 2
C Capacitor
FAN 1 Axial Fan
FAN 2 Axial Fan
FAN 3 Axial Fan (only type 7)
F1-F2 Fuses
LF Green working light
LL High temperature indication
LB Lockout indication
RST Lockout reset button
EF Flue venter
PA Differential pressure switch
IGN1 Ignition transformer 1
IGN2 Ignition transformer 2
EA1 Spark electrode 1
EA2 Spark electrode 2
ION Ionisation probe
SE Electrical board
IMT (*) Fused isolator
MS (*) Fire switch
RSTR (*) Remote reset
TA (*) Room Thermostat
VM (*) Fan switch
SF ( * ) Second stage gas valve connection
(*) External to the heater customer installation.
13