Pentax TDIAP521030 User Manual
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VC7900 Series
Modulating Control Valves
(2) With integral 1 meter (nominal 39") leadwire cable-
VC7931. OR
(3) With intergral 1 meter plenum-rated leadwire cable and 3/8”
flexible conduit connector (low voltage only)- VC7934
VC7934 meets UL94-5V requirements for installation in return
air plenums.
Operating ambient temperature: 0 to 65 °C (32 to 150 °F)
(VC7934 is 60 °C [140 °F] max.)
Shipping & storage temperature: -40 to +65 °C (-40 to
+150 °F)
PRODUCT DATA
The VC7900 Series Modulating Control Valves provide
optimum control of hot and/or chilled water flow in various
heating and cooling applications.
The VC hydronic valve consists of a valve body and
replaceable characterized cartridge assembly. When used with
a Honeywell VC7900 actuator, the valve provides proportional
flow in either diverting or mixing applications. They are
designed to provide sinusoidal valve actuator travel, and
therefore operate silently and resist water hammer. The
VC7900 series valve actuator is used with any 0-10 Vdc
controller.
SPECIFICATIONS
Supply Voltage: Colour coded label
24V, 50-60Hz; Class 2 circuit Blue
Control Signal:
Nominal 0/2 to 10 Vdc (actual 2 to 9 Vdc)
Input impedance 47.5 k ohms
Power consumption: 4 Watts Max. at nominal Voltage (during
valve position change). Use 24 V Class 2 transformer and
provide 6 VA for transformer and connection wire sizing.
Maximum Duty Cycle: 15%
Nominal timing: Opens in 2 minutes @ 60 Hz
Actual Full Stroke Timing is 140 sec
Note: Timing is approximately 20% longer @ 50 Hz
Electrical termination (3 versions available):
(1) Molex™ (header # 39-30-1060). Requires mating connector
(receptacle/housing # 39-01-2060)- VC7930. OR
Atmosphere:
Non-condensing, non-corrosive, non-explosive.
VC7934 meets UL94-5V requirements for installation in return
air plenums.
Min. & max. fluid temperatures: Max. – 4 Bar (60 psi)
Operating pressure differential: Max. – 4 Bar (60 psi)
Pressure rating:
Static – 20 Bar (300 psi)
Burst – 100 Bar (1500 psi)
Valve material: Body of bronze; cartridge of Ryton™
(polyphenylene sulphide) & Noryl™ (polyphenylene oxide);
O-ring seals of EPDM rubber; stainless steel stem.
Flow Characteristics: Linear
The specifications above are nominal and conform to generally
acceptable industry standards. Honeywell is not responsible for
damages resulting from misapplication or misuse of its
products.
Accessories and Replacement Parts:
40007029-002: Wrench for removing VC cartridge
VCZZ1100: 2-way characterized cartridge, unit pack
VCZZ6100: 3-way characterized cartridge, unit pack
Table 1. Series 70, 0/2-10 Vdc Actuator
Model Series
VC7930 24 Vac 120 seconds at
VC7931 1 meter cable
VC7934 24 Vac plenum-
Voltage
(50/60 Hz)
rated
Nominal
Stroke Timing
60 Hz
150 seconds at
50 Hz
Electrical
Connection
6-pin Molex™
1.5 m plenumrated cable
NOTE: Timing is approximately 20% longer @ 50 Hz.
95C-10831-04
VC7900 SERIES MODULATING CONTROL VALVES
A
B
3-3/4 (94)
3-9/16
(90)
2-3/4 (68)
C
D
A
B
3-3/4 (94)
3-9/16
(90)
2-3/4 (68)
C
E
D
AB
Fig. 1. Fluid flow of 2-way valves
Fig. 2. Fluid flow of 3-way valves
Table 2. Valve Body Models
2-way Valve
Number
AA11xx 3.2 1/2" Sweat MA61xx 3.8
AA15xx 0.7 1/2" Sweat
AA16xx 1.3 1/2" Sweat
AC11xx 2.1 3/8" Flare MB61xx 2.7
AD11xx 3.1 1/2" Flare MC61xx 3.8
AE11xx 3.2 1/2" Inv. Flare MD61xx 4.2
AF11xx 3.0 1/2" BSPP/15mm int ME61xx 3.7
AB11xx 3.4 1/2" BSPT int MN61xx 3.8
AM11xx 4.6 3/4" Sweat ML61xx 5.9
AH11xx 5.2 3/4" BSPP ext MG61xx 6.7
AJ11xx 5.2 3/4" BSPP int MH61xx 6.9
AK11xx 4.7 3/4" BSPT int MJ61xx 6.2
AL11xx 4.7 3/4" NPT int MK61xx 6.6
AG11xx 5.4 22mm Compression* MF61xx 6.9
AP11xx 6.6 1"BSPP int MP61xx 7.5
AQ11xx 6.2 1" BSPP ext MQ61xx 7.9
AS11xx 6.2 1" Sweat MS61xx 6.6
AR11xx 6.6 1" NPT int MR61xx 8.6
AT11xx 6.6 1" BSPT int MT61xx 8.1
AN11xx 6.3 28mm Compression* MM61xx 7.5
BB15xx 0.7 1/2" NPT
BB16xx 1.3 1/2" NPT
CV
Rating Body Fitting
3-way Valve
Number Cv Rating
*Includes compression nuts and olives
Table 3. 2-Way Nominal Dimensions (See Fig. 3)
Dimensions C D
Pipe Fitting Sizes
3/4" BSPP (int. & ext.), 3/4" BSPT (int.) 94 3-11/16 113 4-7/16
3/4" NPT (int.) 94 3-11/16 113 4-7/16
3/4" Sweat 94 3-11/16 113 4-7/16
22 MM* Compression 112 4-7/16 113 4-7/16
1" BSPP (int. & ext.), 1" NPT (int.) 94 3-11/16 113 4-7/16
1" Sweat 94 3-11/16 113 4-7/16
28 MM* Compression 116 4-9/16 113 4-7/16
mm inches mm inches
*Includes compression nuts and olives
Table 4. 3-Way Nominal Dimensions (See Fig. 4)
Dimensions C D
Pipe Fitting Sizes
3/8" Flare (no adapter) 98 3-7/8 136 5-11/32
1/2" Sweat 98 3-7/8 136 5-11/32
1/2" Flare (no adapter) 98 3-7/8 136 5-11/32
1/2" Inverted Flare (no adapter) 98 3 7/8 136 5-11/32
1/2" BSPP (int.), 15 MM Comp. 98 3-7/8 136 5-11/32
1/2" BSPP (int.) 98 3-7/8 136 5-11/32
3/4" BSPP (int.), 3/4" BSPT (int.) 94 3-11/16 130 5-3/32
3/4" BSPP (ext.) 94 3-11/16 130 5-3/32
3/4" NPT (int.) 94 3-11/16 130 5-3/32
3/4" Sweat 94 3-11/16 132 5-3/16
22 MM* Compression 112 4-7/16 140 5-1/2
1" BSPP (int. & ext.), 1" NPT (int.) 94 3-11/16 136 5-11/32
1" Sweat 94 3-11/16 136 5-11/32
28 MM* Compression 116 4-9/16 147 5-13/16
mm inches mm inches
*Includes compression nuts and olives
For example, to order a 120 second stroke timing actuator, with
a 1 meter cable and no auxiliary switch, on a 3-way 3/4” BSPP
internal thread body, you would order VC7931MH6111.
Fig. 3. 2-Way nominal dimensions in inches and
millimeters.
Table 3. 2-Way Nominal Dimensions (See Fig. 3)
Dimensions C D
Pipe Fitting Sizes
3/8" Flare (no adapter) 98 3 -7/8 111 4-3/8
1/2" Sweat 98 3 -7/8 111 4-3/8
1/2" Flare (no adapter) 98 3 -7/8 111 4-3/8
1/2" Inverted Flare (no adapter) 98 3 -7/8 111 4-3/8
1/2" BSPP (int.), 15 MM Comp. 98 3 -7/8 111 4-3/8
1/2" BSPP (int.) 98 3 -7/8 111 4-3/8
95C-10831—04 2
mm inches mm inches
Fig. 4. 3-Way nominal dimensions in inches and
millimeters.
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