Read these instructions carefully. Failure to follow them
could result in a fire or explosion causing property damage,
personal injury, or loss of life.
Service and/or installation must be performed by a trained,
experienced service technician.
EXA Modulating E40, E50, E60 Valve Series
Figure 1: EXA Modulating Valve Series
1
© 2019 Maxitrol Company, All Rights Reserved.
PATENT PENDING
The E40(H), E50(H), E60(H) modulating valves are highly
accurate and precise modulating control valves (see figure 1).
EXA valves provide repeatable process control with minimal
hysteresis throughout the entire range of modulation.
The EXA modulation system’s high fire setting and low fire
setting are user programmable.
The EXA modulating valve series has a built-in digital controller
that provides a seamless interface with a process controller.
The valve has two (2) buttons and a communication LED for
the user interface. The buttons are used to set high and low fire
settings (see figure 4, page 4).
The valve has full open and full close (not gas tight) mechanical
limits. The user can program settings that are within the valve’s
mechanical limits. This added dimension for sizing and applying
the valve is an important feature. It allows the valve to be set
up for an entirely different net output characteristic (dependent
upon supply pressure) (see table 1, page 2).
There are six (6) electrical connections on the EXA valve. Two
(2) are for power, two (2) are for the control signal, and two (2)
are for position feedback (see figure 2, page 2).
Disconnect power before installation to prevent electrical
shock, equipment or control damage.
WHAT TO DO IF YOU SMELL GAS
1. Do not operate any appliance.
2. Do not touch any electrical switch; do not use any
phone in your building.
3. Immediately evacuate the area and contact the gas
supplier. Follow the gas supplier’s instructions.
4. If you cannot reach the gas supplier, call the fire
department.
This control
must
be installed and operated
strictly
in
accordance with the instructions of the OEM and with
all applicable government codes and regulations, e.g.
plumbing, mechanical, and electrical codes and practices.
These instructions do not supersede OEM’s installation or
operating instructions.
© 2019 Maxitrol
Maximum Inlet Pressure:
5 psig
NOTE:
Up to 10 psig available, consult Maxitrol Company.
Power Requirements:
24 VAC/DC +/- 10% 50/60 hz
NOTE:
The E40H, 50H, 60H use half-wave rectifiers.
When using a single transformer for powering the E40H,
50H, 60H and devices with half-wave rectifiers, the
common for each must be connected to the same leg
of the transformer. Control signal devices with full-wave
bridge rectifiers require a separate transformer.
See “
Power Supply Compatibility
” bulletin.
Maximum Current Draw:
200mA
Temperature Limits:
-40ºF to 150ºF operating
Control Signal (user selectable):
0-10 VDC, 2-10 VDC,
0-20 mA, 4-20 mA; 100KOhm Input Impedance
Mounting:
Multipoise
Gases:
Suitable for natural, manufactured, mixed gases,
liquefied petroleum gases, and LP gas-air mixtures.
Certifications:
EMC (EN 61000:2001)
Immunity (EN 61000-6-2:2001)
Emissions (EN 61000-6-4:2001)
UL Recognized
Enclosure:
IP40
Electrical Connection:
UL310
Sizes:
E40: 3/8”, 1/2” NPT or Rp ISO 7-1
E50: 1/2”, 3/4” NPT or Rp ISO 7-1
E60: 3/4”, 1” NPT or Rp ISO 7-1
DESCRIPTION
SPECIFICATIONS
