Honeywell V100P User manual

62-3006-2

INSTALLATION INSTRUCTIONS

V100P, Y100P Radiator Valve

FOR ONE-PIPE STEAM SYSTEMS

DESCRIPTION

The V100P Radiator Valve is designed to automatically

control temperatures of one-pipe low pressure steam

radiators, convectors, or other heating units. Install the

V100P Radiator Valve with a T100 Thermostatic Control

and an SA123A (or equivalent) steam/air vent (see Fig. 1).

The Y100P includes the V100P Valve and the SA123A

Steam/Air Vent. V100P Radiator Valves are cast bronze,

with nickel plating. The working parts are designed as an

easily replaceable cartridge. A resilient seat disk provides

positive shut-off.

SPECIFICATIONS

Valve

Maximum Temperature:

248°F (120°C).

Maximum Pressure:

15 psi (103 kPa).

Size:

1/8 in. angle body only.

SA123A Steam/Air Vent

Vent Port:

1/16 in.

Maximum Operating Pressure:

6 psi (41 kPa).

Height:

3-3/4 in.

Fig. 1. Mounted V100P Valve, SA123A Steam/Air

Vent, and T100A Controller.

OPERATION

The V100P Radiator Valve works in conjunction with an

SA123A (or equivalent) steam/air vent (see Fig. 1).

During a call for heat, the valve opens, allowing air to

vent from the radiator. This, in turn, allows steam to flow

into the radiator. When the space temperature reaches

the setpoint, the valve closes, preventing air from

venting. When the valve is closed, the radiator cools.

The control has a modulating rather than an on/off

action to minimize room temperature changes.

M11752

SA123A

V100P

T100A

62-3006—1 2

V100P RADIATOR VALVE FOR ONE-PIPE STEAM SYSTEMS

Home and Building Control

Honeywell Limited-Honeywell Limitée

155 Gordon Baker Road

North York, Ontario

M2H 3N7

62-3006—2 B.B. Rev. 10-98

Home and Building Control

Honeywell Inc.

Honeywell Plaza

P.O. Box 524

Minneapolis, MN 55408-0524

www.honeywell.com

www.honeywell.ca/braukmann/

The V100P is only one component of a one-pipe steam

conversion. Full conversion requires additional

components. For proper temperature control, Honeywell

recommends the following system modifications in

addition to the V100P:

1. A boiler interval timer to provide proper boiler

cycling.

2. Vacuum breakers on the supply piping, or on the

individual radiators to allow air to enter during the

boiler off cycles. Air entry is required to ensure

optimum control.

INSTALLATION

Install V100P Radiator Valves on the vent connection

tapping of a radiator or convector. Use thread sealant

on all connections.

1. Remove old steam/air vent from radiator or

convector.

2. Screw in 1/8 in. male fitting and V100P Valve.

NOTE: The V100P requires horizontal

positioning, or use of a controller with a

remote sensor.

3. Install steam/air vent into V100P.

IMPORTANT

Mount the vent vertically.

4. Install T100 series operator using instructions

included with the unit.

5. Set control to desired setpoint. Valve

automatically controls steam flow to maintain

temperature.

CHECKOUT

If radiator fails to heat:

1. Check that the boiler interval timer is installed

and operating.

2. Check that the vacuum breakers are installed

and operating.

3. Check for proper venting of air:

a. Turn control setpoint to the highest number.

b. If no air is released, turn the control setpoint

to minimum and remove the vent.

c. Check for adequate pressure by slowly

turning the control toward maximum. Steam

flow through the vent port verifies adequate

pressure. Turn setpoint to minimum.

d. If steam flows through the vent port, repair

or replace vent.

e. If steam does not flow through the vent port,

check for blockage in the valve body,

cartridge and the piping.

NOTE: See controller Installation Instructions for

additional troubleshooting procedures.

Printed in U.S.A. on recycled

paper containing at least 10%

post-consumer paper fibers.

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