Bell & Gossett V01348H User Manual

®

Comfort-Trol

PATENT NO’S. 4,553,733 AND 4,560,140

Zone Control Valve

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

INSTRUCTION MANUAL

V01348H

WARNING LABEL PART NO. V56871
INSTALLED IN THIS LOCATION.
IF MISSING IT MUST BE REPLACED.

DESCRIPTION

A two wire heat motor operated valve designed for Hydronic Heating/
Cooling Systems.

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 FOL LOW T HE INST RUCTION S MAY RESU LT IN A
SAFETY HAZARD.

PERFORMANCE CHARACTERISTICS:

Maximum differential shut off pressure: 35 PSIG

WORKING PRESSURE & TEMPERATURE LIMITS

(SOLDER TYPE LIMITS FOR ASTM STD. B16.18)

TYPE OF
SOLDER PRESSURE PSI TEMPERATURE °F

95-5
TIN- 125 240

ANTIMONY

CAUTION: Heat associated with the use of silver solder will

damage the Comfort-Trol and void the product warranty.
Use only the low temperature solder specified. Failure to follow
these instructions could result in property damage and/or moder­ate personal injury.

WARNING: Solder joints will fail if used at pressures or tem-

peratures above those listed in the above table. Do not
exceed the temperature and pressure limitations. Failure to follow
the above instruction can cause the joint to fail resulting in serious
personal injury and/or property damage.

Maximum ambient temperature: 125°F.
Electrical rating: 24 Volt 50/60 Cycle, 1Ø, 15VA AC

MAXIMUM LIMITATIONS

THERMOSTAT

24 Volt two wire with 0.6 ampere heat anticipator setting.

TRANSFORMER

115/24 volt rated at 40 VA for a maximum of three Comfort-Trol Zone
Valves. Note: This transformer must be dedicated to the Comfort-Trol
Zone Valves and not be used to power any other device.

WARNING: Hazardous conditions could occur if the follow­ing notes are not adhered to:

READ PRIOR TO INSTALLING COMFORT-TROL

1. Do not install Comfort-Trol in a dusty area or in an area where
the flow of air to the operator is restricted because erratic
operation or premature failure may occur.

2. Use 95-5 (Tin-Antimony) solder and a good grad of flux to
solder the Comfort-Trol valve body into the system.

NOTE: a. Remove the brass bonnet and retainer assembly

3. Do not install a jumper wire between terminals #1 and #2
because the thermostat heat anticipator may burn out when
the Comfort-Trol operator is energized.

4. Keep external wiring from contacting the Comfort-Trol operator
cover by securing the wiring to a nearby support.

5. Use only silicone grease to lubricate the valve gland pin and
O-ring seals. Do not use lubricants with a petroleum base. The
use of a petroleum base lubricant will cause swelling and fail­ure of U-rings.

6. Do not insulate the Comfort-Trol Zone Valve Operator.

7. Use of additives to the system may be harmful to the Comfort-Trol.

Failure to follow these instructions could result in serious personal
injury or death and property damage.

from the valve body before applying heat to the
body. Failure to do so will damage the valve seals
and discs.

b. Excessive use of solder in a vertical installation may

result in damage to the valve seat.
c. Avoid excessive use of flux.
d. Heat associated with the use of silver solder may

damage the Comfort-Trol.

WARNING NOTES:

INSTALLATION INSTRUCTIONS

The B&G Comfort-Trol Zone Valve can be installed horizontally or ver­tically. However, the following precautions should be taken: When
installing the valve in a vertical position, the electrical connections
must be at the top of the operator. On chilled water applications the
operat or should be above the pipe cen terline . If the valv es are
installed near the boiler, locate them a sufficient distance from the
breeching so they are not affected by flue temperatures.

4. Check solder connections for leaks. If resoldering is neede d,
remove the bonnet assembly and resolder.

5. Assemble the Comfort-Trol operator onto the valve body (the oper­ator can be rotated 360° after it is installed) by pushing down on
the operator until the wire retainers into the operator frame (Fig. 3,
Item E) snap into the retaining groove on the brass bonnet (Fig. 3,
Item C).

6. Electrically wire the Comfort-Trol to the system as described in one
of the following wiring diagrams.

FIG. 1

ote: When two circuits are used in a

N
single zone, always join the circuits to
a common return as shown in Figure 1.
There can be no flow in circuit 1 or 2

hen the zone valve is closed.

w

1. Remove the brass bonnet and retainer assembly from the valve
body as shown in Figure 3.

NOTE: Model w it h flare connect or s can be left ass em bled if
Comfort-Trol is removed from piping before soldering connectors
in place.

2. Solder the valve body into position with the arrow on the body
pointing downstream.

a. Clean the tube ends and Comfort-Trol valve body connections

thoroughly.

b. Use 95-5 (Tin-Antimony) solder, a good grade of flux and a torch

with a sharp pointed flame.

WARNING: Damage to Comfort-Trol body or bonnet may
occur from improper installation, which can cause leakage

or failure of Comfort-Trol.

a. Avoid excessive use of flux and solder when installing Comfort-

Trol in a vertical position because damage to the valve seat
may occur.

b. When soldering the joints, direct the flame with care to avoid

subjecting the valve body to excessive heat.

c. Allow the valve body to cool below 100°F before installing the

bonnet and retainer assembly.

Failure to follow these instruction could result in serious personal
injury or death and property damage.

3. Insert the bonnet assembly with retainer into the valve body and
secure with the two retaining screws. Be careful not to damage the
O-ring seal when inserting the bonnet assembly (Fig. 3, Item A). If a
lubricant is required, apply silicone grease to the bonnet assembly
below the retainer. Do not use lubricants with a petroleum base.

CAUTION: Transformer overload. Do not wire more than

three Comfort-Trol or Modumate Zone Control Valves to
one 40 VA Transformer. Failure to follow these instructions could
result in property damage and/or moderate personal injury.

ote: This transformer

N

ust be dedicated to

m

omfort-Trol use only.

C
No other controls are
to be powered from it.
Improper operation of

omfort-Trol will result.

C

ote: Terminal 3 is not

N

sed if a continuously

u

perating pump is used.

o

FIGURE 2A

1, 2 OR 3 COMFORT-TROLS – SINGLE TRANSFORMER

INTERMITTENT PUMP OPERATION

IMPORTANT: Figure 2B is correct

only when the ModuMate was wired
per factory recommendations.

Note: Terminal 3 is not
used if a continuously
operating pump is used.

See Transformer
Note in Fig. 2A

FIGURE 2B

COMFORT-TROL AND MODUMATE WIRED

TO THE SAME TRANSFORMER

INTERMITTENT PUMP OPERATION

OPERATING INSTRUCTIONS

The Com fo rt-Trol is opened by a heat motor, therefore, the re is
approximately a two minute period between the time the thermostat
closes, calling for heat, and the time the Comfort-Trol opens. As long

MANUAL OPERATION

A power failure may necessitate manual operation of the Comfort-Trol.
If required, please follow these instructions:

1. Turn the switch bringing power to the Comfort-Trol operator to the
OFF position.

2. Squeeze the two formed wire release tabs together and lift up to
remove the operator. See Figure 3.

3. The valve is now fully o pe n and will allow g ra vi ty circulation
through the system.

2

as heat is required, the Comfort-Trol is kept in the open position by a
built in control switch, which meters small amounts of electricity to the
Comfort-Trol heat motor. When the thermostat opens, indicating that
the need for heat has been satisfied, a return spring in the Comfort­Trol slowly closes the Comfort-Trol.

NOTE: After power is restored, return the Comfort-Trol to normal
operation by:

1. Assembling the operator to the valve by installing the operator over
the bonnet assembly and pressing down until the wire form tabs
both engage the slots on the bonnet assembly. This is the reverse
of the process used to remove the operator from the Comfort-Trol.
Do not squeeze the two formed release tabs when reassembling
the operator to the Comfort-Trol.

2. Turn the power switch for the Comfort-Trol to the ON position.