Datasheet Content
VK41..VK81..M/N
GAS CONTROLS WITH ELECTRIC MODULATING PRESSURE
REGULATOR FOR COMBINED VALVE AND IGNITION SYSTEM
INSTRUCTION SHEET
The build on Modureg V7335 is designed to work together
with the W9335 modulating control, W4115 driver, a T7335
thermistor temperature sensor and an advanced range of
micro computer based modulating controls.
The VK41../VK81..M,N gas controls are approved in
accordance with:
AGA; (ANSI Z21.78--1997)
CGA; (CAN/CGA--6.20--M97, 1997)
The VK41../VK81..M/N gas controls can handle the three gas
families, manufactured gas, natural gas and LP gas.
DESCRIPTION
The VK41../VK81..M/N gas control holds a first electric on/off
direct operator for opening the safety valve of class B
according to EN 161 and a second electric on/off servo
operator of class C or J according to EN 161.
SPECIFICATIONS
APPLICATION Model
VK41.0: 220 ... 240 Vrac
VK41.5: 220 ... 240 Vrac without pilot burner connection
The VK41../VK81..M/N gas controls for Combined Valve and VK81.0: 24 Vrac
Ignition system (CVI) have specially been developed for VK81.5: 24 Vrac without pilot burner connection
application in gas fired appliances with either intermittent pilot
(IP) or direct burner ignition(DBI). Suffix M: fast opening with electric modulating pressure
regulator
For this system, the VK41../VK81..M/N series gas valves Suffix N: softlite opening with electric modulating pressure
have been designed to have the S4565/S4575/S4585 series regulator
ignition control attached directly onto the valve.
Main gas connection
The combined system then provides programmed safe light
up, flame supervision and regulation of gas flow to the main See table 1.
3/ ” or 1/ ” straight or elbow flanges are according to the
burner and/or pilot burner of the appliance. 8 2
torsion and bending stress of EN 126 group 2
The VK41../VK81..M/N gas control can also be used as stand Side outlet (optional) can be mounted directly to a burner
alone in direct burner applications. manifold.
A plug with an integrated rectifier circuit then has to be used
(order number 45.900.441--). Pilot gas connection (where applicable)
The VK41../VK81..M,N gas control with the V7335A electric M8 x 1 thread for 4 mm outer diameter tubing.
modulating pressure regulator (Modureg) has the folowing Pressure feedback connection
functions: M5 threaded hole for connection between the Modureg and
· Servo pressure regulation the combustion chamber of the appliance.
Outlet pressure is held at a constant value regardless of
fluctuations of input pressure. Ambient temperature
5 ... 140° F
· Modulating control
Between minimum and maximum outlet pressure gas Dimensions
supply to the appliance is dependent on the electrical See fig. 1.
signal to the modulating coil.
Pressure regulation function
· Mechanical limitation of outlet pressure Class A according to EN 88
The minimum and maximum burner pressures are
mechanically adjusted to guarantee good burner Outlet pressure
performance in case the modulating control should Outlet pressure is pressure drop across the main burner
become out of range. orifice.
EN1R--9178 0109R1--NE
1.46
(37) 3.74 (95) Side outlet
M5 x 0.8(3) 2.68 (68) Pressure tap
0.24 (6) mm full thread 2.44 (62) Adjustable softlite
IN OUT
Hole to connect 0.98
ignition control/plug (25)
0.35
0.94 (9) 0.86
(24)
V1 V2 (22)
1.34
(34)
3.31 (84)
2.68
0.94 (68)
(24)
Side outlet
(Optional) 1.15
4.53 (29)
(115)
5.83 Molex 1.1 square
(148) pin header Pressure feedback
connection
4.45 Pilot outlet
(113) 0.94
3.58 (24)
(91)
0.94
(24)
1.46 1.46
(37) (37)
0.94 0.98 0.67 (17) 0.94
Inlet (25) Outlet (24)
(24)
3.23
(82)
2.65
(65)
1.18
(30)
1.14
(29)
Mounting hole (2) 0.31 (8)
See table 1.
Fig. 1. Dimensional drawing in inch (mm)
Table 1. Standard valve connection Outlet pressure range
Inlet End outlet Side outlet Body length 0.022 ... 0.29 psi (0.6 ... 8” w.c.)
inch (mm) 0.029 ... 0.46 psi (0.8 ... 13” w.c.)
Maximum inlet pressure
Æ 0.73”/18.6 Æ 0.73”/18.6 ---- 4.13 (105) 1/ psi
mm, flanged mm, flanged 2
Minimum regulation capacity
Æ 0.73”/18.6 ---- Æ 0.55”/14 4.13 (105) 35000 BTU at Dp= 0.0072 psi (0.2” w.c.) accross main burner
mm, flanged mm, flanged orifice at 0.5 psi operating pressure maximum.
Internal 3/8” ---- Æ 0.55”/14 4.13 (105) Minimum operating gas pressure
ISO 7--1 mm, flanged 0.22 psi
Internal 1/2” ---- Æ 0.55”/14 4.13 (105) Maximum operating gas pressure
ISO…
