Bell & Gossett V02300D User Manual

BELL & GOSSETT

INSTRUCTION MANUAL

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ThermoMate

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®

* WARNING: Label Part No. V56871
must be installed in this location.
If missing, must be replaced.

Thermostatic Control Valves

Installation, Operation and Service Instructions

V02300

Revision D

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.

DESCRIPTION

ThermoMate Thermostatic Control Valves are silent, efficient,
energy saving non-electric control valves that provide reliable
temperature control for hydronic and low pressure steam termi­nal units. The temperature range of ThermoMate Control Valves
is adjustable between 46°F (7.8°C) and 79°F (26.1°C). A drop in
room temperature causes the operator to open the valve.

FIG. A

Baseboard radiation with Model TM42 angle pattern
valve body and Model TM51 self-contained thermo­static operator. (Thermostatic operator mounted thru
the side panel of the terminal unit cover.)

FIG. B

Baseboard radiation with Model TM12 angle pattern
valve body and Model TM51 self-contained thermo­static operator attached to the TM91 remote mount­ing base a nd sen sing element. (Remote mounting
base and operator mounted thru the front panel of the
terminal unit cover.)

SAFETY
INSTRUCTION

This safety alert symbol will be used in this manual to draw
attention to safety related instructions. When used, the safety
alert symbol means ATTENTION! BECOME ALERT! YOUR

SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE IN­STRUCTIONS MAY RESULT IN A SAFETY HAZARD.

Convector with Model TM21 straight pattern valve
body and Model TM61 thermostatic operator with
remote sensing bulb. (Mounted inside the terminal
unit cover.) Solder adaptor not furnished with valve.

D .GIFC .GIF

Convector with Model TM12 angle pattern valve body
and Model TM51 self-contained thermostatic operator
attached to the TM91 remote mounting base and
sensing element. (Remote mounting base and opera­tor mounted on the wall outside of the terminal unit.)

FIG. E

Convertor with Model TM21 st raight pattern valve
body and Model TM61 t hermostatic operator with
remote sensing bulb attached to the TM91 remote
mounting base. (Remote mounting base and the oper­ator mounted thru the front panel of the terminal unit
cover.)

© COPYRIGHT 1981, 1995

FIG. F

Free standing radiator with Model TM42 angle pattern
valve body and Model TM51 self-contained thermo­static

operator mounted on the radiator.

Free standing radiator with Model TM12 angle pattern
valve body and Model TM61 thermostatic operator
with remote sensing bulb mounted on the wall along­side of the terminal unit.

FIG. HFIG. G

Free standing radiator with Model TM12 angle pattern
valve body and Model TM61 thermostatic operator
with r emote sensing bulb attached to the TM91
remote mounting base. (Remote mounting base and
the operator are mounted on the wall alongside of the
unit.)

Bell & Gossett

Morton Grove, IL, U.S.A.

MAXIMUM OPERATING LIMITATIONS

Temperature: 250°F (121°C)
Steam Pressure: 15 PSI (103.43 kPa)
Working Pressure: 200 PSI (1,379 kPa)
Differential Pressure:

1

/2" Valves 25 PSI (172.38 kPa)

3

/4" Valves 20 PSI (137.90 kPa)
1" Valves 15 PSI (103.43 kPa)

5. As shown in Figures C and G, the TM61 remote sensing
bulb may be installed inside the terminal unit below the
radiation or on a wall. Remove the plastic housing protect­ing the remote sensing bulb by pulling gently on the hous­ing while holding the mounting base. Carefully remove the
sensing bulb from the mounting base and mount the base
to a wall or terminal unit. Replace sensing bulb and cover.
Coil excess capillary tubing and protect it from damage.

INSTALLATION INSTRUCTIONS

1. Fig. A through Fig. H shows the various ways the Thermo­Mate may be installed. Install the ThermoMate valve body
by attaching each end to the mating NPT pipe thread using
a pipe joint compound and tighten with a wrench. If a
sweat connection is used, outlet union connection should
be sweated to the terminal unit before union nut is con­nected to the ThermoMate.

CAUTION: The generous use of pipe joint com-

pound will foul the operating mechanism and pre­vent the ThermoMate from functioning properly. When
piping ThermoMate valve bodies to the system, apply
pipe compound to male threads only. Failure to follow
this instruction could result in property damage and/or
moderate personal injury.

CAUTION: The heat from supply piping of terminal

unit, solar heat or drafts from windows can cause the
temperature sensing element of the TM51 or TM61 to mis­interpret the need for heat. If the TM51 operator is to be
used, it must be installed so that it is in a horizontal posi­tion or is protected from convection currents rising up the
supply pipe. Failure to follow this instruction could result in
property damage and/or moderate personal injury.

CAUTION: Overtightening and breakage can be

caused by the use of Teflon impregnated pipe com­pound or Teflon tape on pipe threads. Use caution when
tightening pipe joints with Teflon materials applied.
Failure to follow these instructions could result in prop­erty damage and/or moderate personal injury.

2. If heat is not immediately required from the terminal unit,
and the valve operator is to be installed at a later date,
leave the red plastic protective cap tightly assembled to
the valve to isolate the terminal unit and protect the oper­ating mechanism. However, temporary heating can be pro­vided by loosening the protective cap which allows the
ThermoMate Valve to Stay Open.

3. The TM51 or TM61 operators are installed as follows: Re­move the red plastic protective cap from the valve body.
While pushing the operator down on the brass hex packing
nut, rotate it until mating slots in the operator engage the
hex nut. Secure the union nut onto the ThermoMate valve
body while continuing to push down on the operator. The
installation of the operator is simplified by setting the oper­ator to the #6 temperature setting.

4. As shown in Figure B and D, the TM91 remote mounting
base and sensing element can be mounted either on the
terminal unit cover or a wall. Use the remote sensing ele­ment as a template to mark the location of mounting holes.
If mounted on a terminal unit, drill a 1
centered between the two mounting holes. This will allow
the operator to pass through and be mounted on the valve
body. Coil the excess capillary tube and secure so that it
does not get damaged.

5

/16" diameter hole

OPERATING INSTRUCTIONS

1. The room temperature can be changed by rotating the cap
(Fig. J) on the operator until the desired number on the cap
lines up with the index pointer in the bezel window. The
number on the operator cap correspond to temperature
settings as shown in fig. H.

2. Using memory feature (day/night temperature)
a) Turn cap to desired day temperature number setting.

Example: Set pointer to #4 for 68°F or 20°C daytime

temperature.
b) Pull the night set back ring up off of the bezel.
c) You will note that the night set back ring has a sun sym-

bol and a moon symbol. The sun symbol indicates the

daytime temperature setting and the moon the night

time setting. The night time setting will be 5.4°F (3°C)

lower than the daytime temperature. Replace the night

set back ring so that the sun symbol lines up with the

pointer on the bezel. For night time setting, rotate the

cap so that the moon symbol lines up with the pointer.

3. Limiting the maximum set temperature
a) Rotate the cap so that the indicator points to the

position.
b) Pull the shroud down from the bezel.
c) Note that numbers are molded into the bezel diameter

which is covered by the shroud. These numbers from 10

to 28 correspond to maximum temperature in °C. Fig. I

shows this relationship in °F. Beneath these numbers

are slots that correspond to the numbers. The lock and

range lever is inserted into one of the slots. To change

the maximum temperature set point pull the locks range

lever out of its slot and insert into the new maximum

temperature slot.
d) Reassemble the shroud to the bezel. The small notch on

the shroud must be on the opposite side of the bezel cut

out indicator where the setting is displayed. Another way

to line up the shroud to reassemble it to the bezel is to

line up the notch in the shroud with the long slot in the

bottom of the bezel which is just past the number 28.

4. Locking set temperatures
a) Set the desired temperature at the pointer in the bezel

window. For example, a setting of 4 is equal to 68°F
(20°C). Refer to Fig. H for other settings.

b) Slide the shroud down off the operator which will reveal

numbers molded into the bezel which was covered by
the shroud. To lock the set temperatures to 68°F (20°C)
put lock and range levers in slots 20 and 22. Refer to
Fig. K for other settings.

c) Reinstall the shroud by lining up the notch in the shroud

with the long slot in the bottom of the bezel which is just
past the number 28.

0 123456

Approx. 0 8 11 14 17 20 23 28 °C

32 46 52 57 63 68 73 79 °F

FIG. H

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