MV100 Electric Controllers
T100, T200 Thermostatic Controllers
and V2000 Radiator Valves
APPLICATION
THERMOSTATIC CONTROLS
The MV100, T100, T200 Controllers, when paired with V2000
Radiator Valves, provide automatic temperature control by
modulating the flow of steam or hot water through free-
T100
T100M
standing radiators, convectors, and other heating units. They
provide comfort and energy savings at affordable prices.
FEATURES
PRODUCT DATA
V2040D
T100F
T100B
MV100
VALVE B ODIE S
V2043H
V2040E
T100C
T200
V200LD
V2040A
• Continually monitors and adjusts room temperature
for consistent comfort and relief from underheating
and overheating.
• T100,T200 Controllers include sensor, setpoint dial
and valve actuator; components can be integral or
connected by capillary tubing.
• T100,T200 Controllers require no electrical
connections.
• T100A,F,M models have range limiting features to limit
adjustment or lock at a fixed setting (can require limit
pin accessory).
• EPDM valve seat disk assures tight shutoff on steam
and hot water systems.
• Nickel-plated bronze cast valve body.
• Cartridge containing all working parts inserts into
valve body for ease of service.
• Cartridges are replaceable while valves remain in
service and under pressurE (WITH accessory service
tool MT100C).
• Valves remain normally open with no control mounted.
• Valves can be used with T100, T200 Thermostatic or
MV100 Electric Controllers.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 5
Wiring (MV100 only) ......................................................... 9
Operation .......................................................................... 9
Settings and Adjustments ................................................. 9
Single-Pipe Steam Applications ....................................... 10
Troubleshooting ................................................................ 12
Pressurized Valve Cartridge Replacement ....................... 13
62-3048—2
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
SPECIFICATIONS
MV100 Electric Controller
Dimensions: See Fig. 1.
Materials:
Body: Industrial grade plastics with low thermal conductivity.
Fastening Ring: Plated brass.
Internal Parts: Brass thermostat capsule, other metals.
Thermal element: Wax-filled brass capsule.
Electrical Ratings:
Control Type: Spst switch.
Controller:
Voltage: 24 Vac, 60 Hz, or 24 Vdc.
Power Consumption: 0.125A, 3W.
End Switch: Low-voltage (24 Vac, 5A), two-position, spst,
normally open switch (closes when controller powered).
Configuration (with Controller Mounted):
Normally closed (valve remains closed without power).
NOTE: Normally open model available in Canada.
Opening Time (at 78°F): Maximum: 5 minutes from cold to
fully open.
Ambient Temperature Rating: Maximum: 122°F (50°C).
T100,T200 Thermostatic Controllers
Models: See Table 1.
Dimensions: See Fig. 1.
Power: Self-powered, no electrical connections.
Components: Sensor, setpoint dial and valve actuator.
Materials:
Body: Industrial grade plastic with low thermal conductivity.
Fastening Ring: Plated brass.
Internal Parts: Brass thermostat capsule, other metals.
Thermal Element:
T100A,M: Wax.
T200,T100B,C,F: Liquid Ethyl Acetate (non-toxic,
flammable).
Temperature Ratings:
Range: 43°F to 79°F (6°C to 26°C).
Maximum: 125¼F (52¼C).
V2000 Valves
Models: See Table 2.
Dimensions: See Fig. 2 and 3.
Materials:
Body: Bronze.
V2040A (1/2 in.): Brass.
Union: Brass.
Stem Seal: Double EPDM seal.
Cartridge: Brass and stainless steel with EPDM seat disk.
NOTE: Apply 25 ft.-lb. (30 N•m) torque when installing the
valve cartridge.
Maximum Temperature Rating: 266°F (130°C).
Maximum Pressure Ratings:
System:
Water: 145 psi (10 bar).
Steam: 15 psi (103 kPa).
Differential:
With MV100 Controller: 36 psi (248 kPa).
With T100 or T200 Controller: 14.5 psi (1 bar).
For Low Noise: 2.9 psi (20 kPa).
Sizes:
V2024H: 1/8 in.
V200LD: 1/2 in., 3/4 in.
V2040D,E,A: 1/2 in., 3/4 in., and 1 in.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
62-3048—2 2
TOP
2
(50)
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
T100A
T100M
TOP
2
(50)
1 (25)
2-1/8 (54)
CAPILLARY TUBE LENGTH
4-1/2 FT (1.4 m)
T100C
2-1/8 (54)
3-5/16
(84)
MAX.
CAPILLARY TUBE LENGTH
6-1/2 FT (2m) OR 16 FT. (5m)
2-5/32
(55)
TOP
1-9/16
(40)
M12925A
T100B
T200A
3
(77)
2-1/8 (54)
2-31/32 (75)
1-13/16
(46)
M12926
M12929
2-5/32
(55)
CAPILLARY TUBE
LENGTH 4-1/2 FT (1.4 m)
CAPILLARY TUBE
LENGTH 6-1/2 FT (2 m)
T100F
MV100
2 (51)
Braukmann
H
xxxxxxxx
xxxxx
2-31/32 (75)
3-5/16
(84)
MAX.
2-1/8 (54)
2 (50)
1-13/16
(46)
M12927
M12928
3
(76)
MAX
M12945
13/16 (20)
M3187A
Fig. 1. MV100, T100 and T200 dimensions in in. (mm).
3 62-3048—2
2-7/8
(74)
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
Table 1. T100,T200 Models.
Model Control Range Mounting Capillary Description
T100A 43°F to 79°F
(6°C to 26°C)
T100B 48°F to 79°F
(9°C to 26°C)
T100C Remote Two 4-1/2 ft
Direct
a
None Components are in one unit.
Remote One 6-1/2 ft (2 m)
or 16 ft (5 m)
Sensor and setpoint dial combined and remote from valve
actuator.
Components mount remotely from each other.
(1.4 m)
T100F 43°F to 79°F
(6°C to 26°C)
Direct with
remote
One 6-1/2 ft (2 m) Sensor is remote from combination setpoint dial and valve
actuator.
sensor.
T100M
T200A
a
Mount the unit horizontally on the valve body for accurate temperature regulation.
Direct
Direct
a
a
None Components are in one tamper-resistant unit.
None White body with chrome-plated end.
Table 2. V2000 Models.
Connection
Model Body Pattern
V2040D Straight NPT
V2040E Angle Typically used with remote temperature sensing controllers.
Threaded
V2040A Horizontal Angle Typically used with direct-mount controllers (T100A,M; T200A)
Union Nut with
NPT Threaded
or Sweat
Use where manual valves were not originally installed.
ApplicationInlet Outlet
V200LD Straight Sweat Sweat Use with copper tubing installations.
V2042H/
V2043H
One-Pipe 18 in. NPT 1/8 in NPT for
SA123A Vent
Use in single-pipe steam applications.
B MAX.
V2040D (Straight Body)
A
V2040A (Horizontal Angle Body)
B MAX.
A
M12930B
C
M12932B
Fig. 2. V2000 dimensions.
B MAX.
C
M12931B
V2040E (Angle Body)
A
V200LD (Straight Body)
B MAX.
M12933B
A
NOTE: Refer to Table 3 for detailed valve dimensions for each valve size.
62-3048—2 4
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
Table 3. Valve Dimensions.
Size in
Valve
V2040D 1/2 3-3/4 (95) 4-1/16 (104) —
V2040E 1/2 2-5/16 (58) 3-3/16 (98) 1 (26)
V2040A 1/2 2-1/8 (54) 4-1/2 (115) 1-1/8 (28)
V200LD 1/2 2-5/8 (66) 4-1/16 (104) —
V2042H 3/8 1-11/16 (43) 3-13/16 (98) 1-3/16 (31)
a
B Max dimension is with T100A control installed, except for
the V2042H, for which it is without the steam/air vent
installed.
in.A in in. (mm)
3/4 4-3/16 (106) 4-1/16 (104) —
1 4-1/2 (114) 4-1/2 (114) —
3/4 2-5/8 (66) 3-13/16 (98) 1-1/8 (29)
1 2-15/16 (74) 4-5/16 (110) 1-5/16 (34)
3/4 2-1/2 (64) 5-3/16 (132) 1-3/16 (31)
1 2-15/16 (74) 5-3/16 (132) 1-7/16 (37)
3/4 2-15/16 (74) 4-1/16 (104) —
in in. (mm)C in in. (mm)
B Max
a
B MAX. A
5
6 0
Fig. 3. V2042H (Body)/V2043H (Body with Airstream Vent)
Dimensions.
NOTE: Refer to Table 3 for detailed valve dimensions for
each valve size.
C
M17016
Connections:
Inlets Available:
Internally threaded.
Sweat (1/2 in. and 3/4 in. only).
Outlets Available:
Union nut with threaded tailpiece.
Sweat (1/2 in. and 3/4 in. only).
Union nut with sweat tailpiece (1/2 in. and 3/4 in. only).
Capacity:
Cv (gpm at 1 psi drop across fully-open valve):
1/2 in.: 2.0.
3/4 in.: 2.2.
1 in.: 2.3.
Btuh (Btu/hr at 7 psi drop across fully-open valve):
1/2 in.: 59,100.
3/4 in.: 63,800.
1 in.: 70,500.
Accessories:
203225 Replacement Bulb Guard for T100F.
272844 Locking Cap and Limit Pins for T100M.
272873 MT100C Cartridge Tool Driver Upgrade Kit.
A104F Limit Pins for T100A,F.
VS1200SL01 Replacement Valve Cartridge.
G111B Bulb Guard to protect T100C sensor when
wall-mounted.
VA8200A001 Valve Cartridge Replacement Tool for system
under pressure (V2000).
Q110D Inlet Strainer Inserts for NPT V100 (models available
for 1/2 in. and 3/4 in. valves).
SA123A Steam/Air Vent for V2042HSL10 One-pipe Steam
Val ve.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Equipment Damage Hazard.
Excessive force can distort and damage valve.
Do not overtighten the union nut.
CAUTION
Equipment Damage Hazard.
Driving an unmounted MV100 can damage the
actuator beyond repair.
Mount the MV100 before applying power to the
actuator.
CAUTION
Sweat Valve Damage Hazard.
Soldering the valve with the cartridge or controller
attached can damage the device.
Prior to attaching valve to piping, remove controller and
cartridge from potential exposure to heat.
IMPORTANT
When installing the valve body, ensure that the arrow
(cast into the body) points in the direction of the flow.
5 62-3048—2
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
Pre-setting and Balancing Flow Through Valve Body.
Close valve with straight blade screwdriver by turning black
pre-setting ring clockwise.
M22687
Fig. 4. Closing valve.
When closed, the position of the screwdriver slot equals presetting zero. Mark the position of the slot with a felt tip pen.
M22688
Fig. 5. Mark zero position of screwdriver slot.
Take required value from Table 4. Turn presetting ring
counterclockwise with a straight blade screwdriver to this
position.
Chose value has to be congruent with marking.
One complete revolution of the black pre-setting ring equals a
pre-setting of 10 (Fig. 7).
M22690
Fig. 7. One complete revolution equals a pre-setting of 10.
Table 4. CV Values.
Pre-
setting 1 2 3 4 5 6 7 Open
3/8 in. 0.29 0.58 0.87 1.16 1.45 1.68 1.80 2.00
1/2 in. 2.15
3/4 in.,
2.26
1 in.
2
NOTE: Pressure drop (psi) = (flow[gpm]/cv)
.
Product Selection
1. Select the installation diagram (from Fig. 4 through 16)
that most accurately represents your equipment and piping configuration.
2. Use Table 4 to select the combination of controller and
valve that is most suitable based on:
a. Equipment and pipe configuration, see Tables 1 and
2.
b. Flow capacity requirement, see Specifications
section.
IMPORTANT
The T100 and T200 are modulating, not manual shutdown, valve actuators. Do not use them for hand
shutoff valves.
M22689
Fig. 6. Set pre-setting ring to correct value.
62-3048—2 6
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
Typical Applications
Table 5. Figure References to Typical Applications.
Application
Figure No. Controller Valve
8 T100A, T100M, T200, MV100 V2040D
9 T100A, T100M, T200, MV100 V2040A
10 T100A, T100M, T200, MV100 V2040E
11 T100A, T100M, T200, MV100 V2042H
12 T100M, MV100 V2040A
13 T100F, MV100 V2040E
14 T100F, MV100 V200LD
15 T100F, MV100 V2040D
16 T100F, MV100 V2042H
17 T100B, MV100 V2040D
18 T100B, MV100 V2040E
19 T100C, MV100 V2040D
20 T100C, MV100 V200LD
Fig. 10.
4
5
0
M12934
Fig. 8.
Fig. 9.
M3236
Fig. 11. One-pipe steam system.
M4631
M12935
Fig. 12.
M4632
M4635
Fig. 13.
7 62-3048—2
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
A
Fig. 14.
Fig. 15.
M4640
M12936A
M3190
Fig. 18.
M4638
Fig. 19.
SA123A
V2042H
T100
Fig. 16.
Fig. 17.
M12937
M11752A
M12939
Fig. 20.
Location and Mounting
Because these controls are thermostats that have sensors that
measure air temperature in the immediate vicinity, it is critical
to select an appropriate installation location.
These devices are adversely affected by radiant heat, solar
heat or airflow obstructions such as curtains or enclosures.
Two essential considerations for choosing the correct
controller/valve body combination for a particular installation
are:
— Adequate dimensional clearances.
— Proper sensor positioning.
IMPORTANT
Install built-in sensor type controllers in a horizontal
position to prevent air warmed by the hot valve body
from influencing the sensor.
NOTE: The most common misapplication of these valves and
controllers is the use of a horizontal-body valve
(V2040E) with a direct-mount controller (T100A,M or
T200A). See Fig. 17.
62-3048—2 8
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
A
CORRECT
INCORRECT
M16272A
Fig. 21. Horizontal-body V2000 application.
Install controllers with external sensors in any position. The
sensor can easily be mounted in a position to measure and
control the room air temperature.
MV100
END
SWITCH
RED
RED
2
PTC
RESISTANCE
HEATER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
NORMALLY OPEN END SWITCH CLOSES WHEN MV100 IS POWERED.
2
SUGGESTED HEAT ANTICIPATOR SETTING IS 0.35A.
3
YELLOW
YELLOW
3
T810/T822
TO CIRCULATOR
PUMP MULTIZONE
PANEL OR BURNER
RELAY
L1
(HOT)
L2
1
M12947
Fig. 22. MV100 internal schematic and wiring connections.
OPERATION
NOTE: When temperature of medium exceeds 190°F (88°C),
mount the MV100 horizontally.
WIRING (MV100 ONLY)
Wire the MV100 according to Fig. 18.
CAUTION
Equipment Damage Hazard.
Can short equipment circuitry.
Disconnect all power supplies before installation.
CAUTION
Equipment Damage Hazard.
Connecting improper voltage can damage the
device beyond repair.
Connect only 24 Vac or 24 Vdc to the MV100.
The T100 and MV100 Controllers contain temperaturesensitive capsules that expand or contract in reaction to
temperature changes.
— When the capsule expands, pressure from the expand-
ing material closes the valve, preventing flow through
the radiation unit.
— When the capsule contracts, the valve opens and flow
resumes through the radiation unit.
T100
The T100 temperature-sensitive capsule expands when the
temperature rises above the setpoint.
MV100
When signalled by the thermostat, an electric element in the
MV100 heats the capsule causing it to expand.
NOTE: For normally open MV100 models, the capsule cools
when signalled by the thermostat.
SETTINGS AND ADJUSTMENTS
When installation is complete, rotate the setpoint dial to the
desired setting.
NOTE: The setpoint varies with the location of the sensor. A
floor level sensor controls at a setpoint different from
the wall level sensor.
Normally, correction of an overheating or underheating
condition requires only small changes. See Table 5 for dial
markings and corresponding temperature settings. After
changing the setting, allow the valve at least 30 minutes to
stabilize.
9 62-3048—2
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
Table 6. T100 and T200 Settings and Corresponding Temperatures in °F (°C).
0*123456
T100A,F 32 (0) 43 (6) 46 (8) 54 (12) 61 (16) 68 (20) 73 (23) 79 (26)
T100B,C — 55 (13) 61 (16) 64 (18) 68 (20) 72 (22) 75 (24)
T100M — 43 (6) 61 (16) 64 (18) 68 (20) 72 (22)
T200 — 43 (6) 52 (11) 57 (14) 63 (17) 68 (20) 73 (23) 79 (26)
a
Setting not marked on dial.
NOTE: Torque cartridge to 25 ft-lb.
75 (24)
79 (26)
a
79 (26)
a
a
Setpoint Locking or Limiting (T100A,F,M only)
A single temperature or range-limiting lock is available for the
T100A,F,M. See Accessories in the Specifications section.
Refer to the T100A,F,M Installation Instructions for procedural
details.
Cartridge Replacement
With the appropriate tools, the V2000 cartridge can be
replaced while under pressure.
WARNING
Severe Scalding Hazard.
Contact with hot liquid can lead to severe injury
or cause death.
For a pressurized valve, only open with Valve Cartridge
Replacement Tool.
CAUTION
Hot Surface Hazard.
Contact with hot valve body can cause
severe burning.
Service cartridge only when valve body is cool.
CAUTION
Hazardous Splashing Fluids.
Can injure, burn, or blind.
Wear safety glasses or goggles.
Under Pressure
Replacing the V100 Cartridge with the system under pressure
requires the Valve Cartridge Replacement Tool (see
Accessories in the Specifications section). See Pressurized
Valve Cartridge Replacement section for details.
Not Under Pressure
Replacing the cartridge without the Valve Cartridge
Replacement Tool requires one of the following:
• Isolation of valve from system pressure.
• System shutdown and drain to valve level.
Once the valve is not pressurized:
1. Using a 3/4 in. (19 mm) hex (6- or 12-point) socket
wrench, remove and discard the cartridge.
2. Clean the inside of valve and cartridge sealing surfaces.
Install a new cartridge.
SINGLE-PIPE STEAM APPLICATIONS
Many older buildings original heating systems were
single-pipe steam. The advantage of single-pipe steam
systems is lower initial cost, resulting from the use of less
piping and elimination of radiator steam traps.
CAUTION
Boiler Flooding Hazard.
Loss of system control and boiler damage can
result.
For a one-pipe steam system radiator, install valve only
at the vent location.
IMPORTANT
Ensure vacuum breakers are installed on the steam
system risers. If vacuum breakers (that open to the
atmosphere at zero psig) are not installed, the system
can develop a negative pressure and pull steam back
into the radiators on resumption of steam.
Refer to Fig. 12 for installing the one-pipe steam radiator
adapter assembly.
Single-Pipe Steam Systems
T100/V2043H (with vent) operation to provide temperature
control for a formerly uncontrolled single-pipe steam system
follows:
1. The boiler is off (zero steam pressure); radiators are
filled with air; the vent is open.
2. The T100 calls for heat, opening the valve.
3. At the command of an external controller (such as a
representative zone thermostat, or a timer controlled by
outside temperature) the boiler cycles on and begins
delivering steam to the system.
4. Steam enters the radiator, forcing air through the open
V2042H and out through the vent.
5. Once the air is exhausted, the steam heats the
thermostatic element of the vent, causing it to close.
6. The steam cools forming condensation. Condensation
flows out of the radiator making room for more steam to
enter.
7. The T100 is eventually satisfied (temperature equals the
setpoint) and it closes the V2042H.
8. The air in the system (introduced by the vacuum
breakers) begins to fill the radiator. The air in the radiator
prevents steam from coming in and the radiator cools.
9. The boiler cycles off by command of components
external to the T100/V2042H and the steam pressure
returns to zero.
62-3048—2 10
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
A
NOTE:
— While the T100 is satisfied, the V2042H is closed
and the radiator remains airlocked. Thus, no
steam can enter the radiator. The airlocked
condition remains until the T100 calls for heat, at
which point the system operates as described in
steps 1 through 6.
— An improperly cycled boiler causes either
excessive heating or lack of heat, depending on
the system time constant.
Bringing the Steam Pressure to Zero psig
To assure the proper operation of any single-pipe steam
system, ensure that the steam pressure is brought to zero at
some time during the off-cycle. One suggested procedure
follows:
1. Determine if steam is required using one of two
methods:
a. A thermostat in a representative zone controls the
valve or cycles the boiler.
b. A timing device cycles the boiler for varying lengths
of time in response to outdoor temperature.
IMPORTANT
When cycling the boiler from a space thermostat in a
zone, do not apply a radiator valve to that radiator.
2. Turn off the steam and allow system pressure to drop to
zero. Do this using one of two methods:
a. Turn the boiler off and allow the total steam pressure
in the system to drop to zero.
IMPORTANT
Before applying controls to turn a boiler on and off,
check the manufacturer recommendations.
NOTE: Install the valve on the boiler side of the condensation
takeoff to ensure that the condensation can return to
the boiler.
3. Verify that the steam pressure has returned to zero.
Verification
Verification is necessary to prove that the pressure has
returned to zero. Simply turning off the boiler or shutting off the
steam supply does not ensure zero steam pressure. The
simplest way to check for zero pressure follows:
1. Install a strap-on Aquastat® Controller, such as the
Honeywell L6006C Aquastat® Controller, on the
condensation return line (see Fig. 19).
2. Set the Aquastat® Controller at about 150°F (66°C).
With the return line at or below this temperature, the
water is all condensation, and the pressure is
functionally zero.
3. Wire the Aquastat Controller into the interrupting circuit
to ensure that steam flow cannot resume until the
condensation line is below the setpoint. The 150°F
(66¡C) setpoint serves as a nominal starting point and
can require adjustment for individual steam systems.
MASTER ZONE
THERMOSTAT
24
Vac
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
L1
(HOT)
L2
1
1
L6006C
LOW
VOLTAGE
RELAY
PRIMARY
CONTROL
M7536
b. In installations where turning the boiler off at the end
of each cycle is undesirable, install a control valve
(such as a Honeywell V5011 Valve) on the boiler discharge line.
Fig. 23. Holding circuit for use with L6006 when
verifying zero psig steam pressure.
11 62-3048—2
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
TROUBLESHOOTING
Refer to Table 6 for troubleshooting details.
Table 7. T100/V2000 Troubleshooting.
Symptom Possible Cause Solution
Not all sections of the
radiator are heating.
Underheating Sensor in the wrong location. Change the sensor location or change the control type. See
Overheating Sensor in the wrong location. Change sensor location or change control type.
Chattering or knocking. Flow through the valve in the
Many radiators are oversized and
not all sections heat to maintain
the desired temperature.
T100A,M Controller mounted in a
vertical position above the hot
pipe.
Excess capillary tubing coiled
above or too close to the heat
source.
Flow through the valve is in the
wrong direction.
Inadequate system temperature or
pressure.
Defective steam traps. Repair or replace the traps.
Airlock in the hot water system. Fully open the valve to allow air to pass. Install vents.
Scale or debris blocks flow. Flush the system. Do not use oil-based additives. Clean strainer
Heating cabinet dampers are
closed.
Single-pipe: Blocked vent. Remove and inspect vent. Replace if necessary.
Control not properly installed. Check for bosses and grooves, reset actuator on valve and tighten
Capillary tube broken, kinked or
bent sharply.
Dirt or scale under the seat
prevents tight shutoff.
Flow through the valve is in the
wrong direction, damaging the
valve seat.
Defective steam traps. Repair or replace traps.
Excessive differential pressure
forces the valve open (hot water
systems).
Single-pipe: Insufficient air in
system.
wrong direction.
Vacuum in the system. Steam—check traps and vents.
Excessive differential pressure. Install differential pressure regulator (D146A) to maintain less than
Bent piping. Ensure adequate space for piping.
System is operating properly.
Installation Instructions.
Mount the T100A,M horizontally, or switch controller to a T100F.
Coil excess capillary tubing below or away from the heat source.
Check the arrow on the valve body. It should be in the direction of
the flow. Change the valve direction or flow direction.
Check boiler operating and limiting controls, circulating pump, and
isolating valves.
insert in steam applications.
Open or remove the dampers.
knurled ring to valve body.
Replace control.
Remove the control from the valve body, allowing valve to open
fully and flush away scale and debris. Reinstall control. Turn fully
clockwise. If the valve does not close fully, remove the control and
cartridge (see Cartridge Replacement section). Always use a
strainer insert in steam applications.
Check the arrow on the valve body. It should correspond to the flow
direction. Change the valve direction or flow direction. Remove
valve cartridge and inspect seat disk for damage.
Install differential pressure regulator (D146A) to maintain less than
15 psi (103 kPa) differential between the supply and return pipes.
Check boiler cycling and system vacuum breakers. Repair or
replace breakers as necessary.
Check the arrow on the valve body. It should correspond to the flow
direction. Change the valve direction or flow direction.
Hot water—check expansion tank operation and location.
15 psi (103 kPa) differential between the supply and return pipes.
62-3048—2 12
MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES
PRESSURIZED VALVE CARTRIDGE REPLACEMENT
The VA8200A001 Valve Cartridge Changing Tool enables the
user to remove, and clean or replace the valve cartridge while
the valve remains pressurized. Boiler shutdown is not required.
WARNING
Severe Scalding Hazard.
Contact with hot liquid can lead to severe injury or
cause death.
Exercise extreme caution when working with hot liquid.
CAUTION
Hazardous Splashing Fluids.
Can injure, burn, or blind.
Wear eye protection to prevent injury.
To remove the cartridge, perform the following:
1. Remove controller and loosen valve cartridge slightly
using a 19mm socket wrench (A,B). See Fig. 20.
2. Tighten VA8200A Cartridge Changer to valve body
(A,B), close drain cock (C), and turn tool handle ccw to
unscrew cartridge (D). See Fig. 21.
3. Pull handle out to clear VA8200A ball valve (A), close
ball valve (B), and open drain cock to remove excess
water and steam from chamber (C). See Fig. 22.
4. Unscrew end cap (A) and remove cartridge from
chamber (B). See Fig. 23.
5. Clean or replace cartridge.
B
D
A
M16273
C
Fig. 25. Attaching VA8200A001 to valve.
B
A
C
Fig. 26. Disconnecting valve cartridge
and draining chamber.
M16275
B
A
M16274
Fig. 24. Loosening valve cartridge.
A
B
Fig. 27. Removing valve cartridge.
To reinstall cartridge into the valve, use the same process and
figures. Perform steps in reverse order. All figure arrows are
backwards (except Fig. 20, arrow A). Proceed as follows:
1. Replace cartridge into chamber (B) and screw end cap
onto VA8200A (A). See Fig. 23.
2. Close drain cock (C), open ball valve (B), and push
handle in (A). See Fig. 22.
3. Turn tool handle cw to screw in cartridge (D), open drain
cock to drain chamber of remaining water and steam (C),
and loosen VA8200A Cartridge Changer from valve body
(B,A). See Fig. 21.
4. Tighten valve cartridge using a 19mm socket wrench
(A,B) and replace controller. See Fig. 20.
M16276
13 62-3048—2
62-3048—2 14
15 62-3048—2
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2006 Honeywell International Inc.
62-3048—2 G.R. Rev. 02-06
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