Effective: November 2015
F-35-70
3
MOUNTING AND WIRING
The Series 35-70 control is not position sensitive and can be
mounted vertically or horizontally. The control may be mounted
on any surface and fastened with #6 sheet metal screws. Secure
the control in an area that will experience a minimum of
vibration and remain below the maximum ambient temperature
of 80°C (175°F).
All connections should be made with UL Approved, 105°C rated,
18 gauge, stranded, .054” thick insulated wire. Refer to the
appropriate wiring diagram when connecting the 35-70 to other
components in the system.
Wiring Diagrams - 35-70
Figure 1. Local Sense
Figure 2. Remote Sense
Figure 3. Multi-Pin Layout
CAUTION
All wiring must be performed in accordance with
both local and national electrical codes.
CAUTION
Label all wires prior to disconnection when
servicing controls. Wiring errors may cause
improper and dangerous operation. A functional
checkout of a replacement control should always
be performed.
WARNING
This product uses voltages of shock hazard
potential. Wiring and initial operation must be
performed by a qualified service technician.
WARNING
Operation outside specifications could result in
failure of the Fenwal product and other
equipment with potential for injury to people and
property.
Terminal Designations
Terminal
Description
Multi-Pin
Connector
P/N: TE 1-644615-1
Quick
Connect
(inch)
NC
Alarm
11
1/4”
V1
Valve Power
10
3/16”
L2
120 VAC (Neutral)
8
3/16”
V2
Valve Neutral
7
3/16”
L1
120 VAC Input (Hot) 6
1/4”
B. GND
Burner Ground
2
3/16”
S1
Remote Flame
Sensor
1
1/4”
FC+, FC-
Flame Sense
Test Points
2 Pin Header
(TE P/N: 640383-2,
Molex P/N: 26-60-2020)
