Bell & Gossett V02300D ThermoMate Thermostatic Control Valves - Manual (Page 2)

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)
INSTALLATION INSTRUCTIONS
1. Fig. A through Fig. H shows the various ways the Thermo-
Mate 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 con-
nected to the ThermoMate.
CAUTION: The generous use of pipe joint com-
pound will foul the operating mechanism and pre-
vent 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 mis-
interpret the need for heat. If the TM51 operator is to be
used, it must be installed so that it is in a horizontal posi-
tion 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 com-
pound or Teflon tape on pipe threads. Use caution when
tightening pipe joints with Teflon materials applied.
Failure to follow these instructions could result in prop-
erty 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 oper-
ating mechanism. However, temporary heating can be pro-
vided by loosening the protective cap which allows the
ThermoMate Valve to Stay Open.
3. The TM51 or TM61 operators are installed as follows: Re-
move 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 oper-
ator 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 ele-
ment as a template to mark the location of mounting holes.
If mounted on a terminal unit, drill a 1
5 /
16
" diameter hole
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. 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 protect-
ing the remote sensing bulb by pulling gently on the hous-
ing 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.
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 1 2 3 4 5 6
Approx. 0 8 11 14 17 20 23 28 °C
32 46 52 57 63 68 73 79 °F
2
FIG. H