Page 1
7800 SERIES
Q7800A,B 22-Terminal
Universal Wiring Subbase
PRODUCT DATA
FEA TURES
• Quick-mount wiring subbase for all 7800 SERIES
Relay Modules and S7830 Expanded Annunciator.
• Allows wiring of control system before installation of
relay module.
• Can be panel mounted (Q7800A) or burner or wall
mounted (Q7800B).
• Access slots provided for electrical measurements.
• NEMA 1 enclosure.
• Electrical access slot covers provided with Q7800B;
available option for Q7800A.
APPLICATION
The Q7800A,B is a universal wiring subbase for the 7800
SERIES Relay Modules and Expanded Annunciator
(S7830A). The universal wiring subbase provides terminals
for field wiring. Knife blade terminals located on the 7800
SERIES Relay Module or S7830A engage the Q7800
bifurcated contacts to make electrical connections.
The Q7800A1005 (2-sided) subbase is available for panel
mounting applications. The Q7800B1003 and Q7800B1011
(4-sided) subbases are available for burner or wall mount
applications. Knockouts are provided in the back, top and
bottom for conduit connections.
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
65-0084-3
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
SPECIFICATIONS
Weight:
Q7800A: 7 ounces.
Q7800B: 1 pound, 3 ounces.
Dimensions:
See Fig. 1, 2 and 3.
Enclosure:
NEMA 1.
G
L2(N)
3
4
5
6
7
8
9
10
F
Approval Bodies:
Underwriter Laboratories Inc. Component Recognized: File
no. MP268, Guide no. MCCZ2 (Q7800A),Listed: File no.
MP268, Guide no. MCCZ (Q7800B).
Canadian Standards Association Certified: LR95329-3.
To meet EN60730 approval, the Q7800 subbase must be
mounted in a secured panel which meets IP40 class of
protection.
Accessories:
Electrical Access Slot Covers, part no. 221779 (Q7800B).
USE NO. 6 MOUNTING SCREWS (4)
12
13
14
15
16
2-1/2
17
(64)
18
19
20
21
1-11/32
(34)
22
4-31/32
(126)
1
1-11/32
(34)
4-31/32
(126)
2-9/32
(58)
1
OPTIONAL TERMINAL TEST ACCESS COVER.
1-13/32
(36)
M1968B
Fig. 1. Top and front view of Q7800A1005 Wiring Subbase (2-sided) with dimensions in in. (mm).
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
65-0084—3 2
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
23/32 (18)
1/2 (19)
2-1/4
(64)
1-11/32
(34)
G
L2(N)
3
4
5
6
7
8
9
10
F
2-1/8 (54)
1-11/32
(34)
2-1/8
(54)
4-31/32
(126)
1 (25)
USE NO. 6 MOUNTING SCREWS (4)
2-9/32
(58)
1 (25)
7/8 in. DIA. KNOCKOUTS (7)
FOR 1/2 in. CONDUIT
12
13
14
15
16
17
18
19
20
21
22
1-13/32
(36)
1-5/8
(41)
27/32 (21)
4-31/32
(126)
1
2-7/32
(56)
3/4 (19)
23/32 (18)
1
REMOVE ONLY FOR
TERMINAL TEST ACCESS.
M1966A
Fig. 2. Top and front view of Q7800B1003 Wiring Subbase (4-sided) with dimensions in in. (mm).
65-0084—33
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
23/32 (18)
3/4 (19)
3/4 (19)
2-1/4
(64)
1-11/32
(34)
G
L2(N)
3
4
5
6
7
8
9
10
F
2-1/8 (54)
1-11/32 (34)
2-1/8 (54)
2-9/32 (58)
4-31/32 (126)
1 (25)
USE NO. 6 MOUNTING SCREWS (4)
1 (25)
7/8 in. (22) KNOCKOUTS (9)
FOR 1/2 in. CONDUIT
12
13
14
15
16
17
18
19
20
21
22
1-13/32
(36)
1-5/8
(41)
27/32 (21)
4-31/32
(126)
1
3 (76)
Fig. 3. Top and front view of Q7800B1011 Wiring Subbase (4-sided) with dimensions in in. (mm).
65-0084—3 4
3/4 (19)
3/4 (19)
23/32 (18)
1
REMOVE ONLY FOR
TERMINAL TEST ACCESS.
M9883
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced, Flame
Safeguard service technician.
4. Disconnect the power supply before beginning
installation to prevent electrical shock and equipment
damage. More than one disconnect may be involved.
5. All wiring must comply with applicable local electrical
codes, ordinances, and regulations.
6. All wiring must be NEC Class 1 (Line Voltage).
7. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Disconnect power supply before beginning installation
to prevent electrical shock and equipment damage.
More than one disconnect may be involved.
Follow the equipment manufacturer instructions if available;
otherwise, proceed as follows below.
MOUNTING
NOTE: For installation dimensions, see Fig. 1 and 2.
1. Place the subbase in a location within the ambient
temperature rating of the 7800 SERIES Relay Module
and S7830A being used. Refer to the appropriate
Instructions.
2. Mount the subbase in any position except horizontally
with the bifurcated contacts pointing down. The
standard vertical position is recommended.
3. Select a wall, burner or electrical panel location. Or
mount the Q7800 directly in the control cabinet. Be sure
to allow adequate clearance for servicing, installation,
access or removal of the 7800 SERIES Relay Module,
S7830A, Keyboard Display Module, Run/Test switch,
flame amplifier signal voltage probes, electrical signal
voltage probes and electrical field connections.
IMPORTANT
Do not mount the wiring subbase horizontally with
the bifurcated contacts pointing down.
4. For surface mounting, use the back of the subbase as a
template to mark the four screw locations. Drill the pilot
holes.
5. Insert the mounting screws using four no. 6 screws
tightened securely .
WIRING
1. Refer to the equipment manufacturer’s wiring
information and the appropriate 7800 SERIES Relay
Module or S7830A Specifications for correct subbase
wiring.
2. Provide overload protection and disconnect means as
required. Disconnect the power supply from the main
disconnect before beginning installation to prevent
electrical shock and equipment damage. More than one
disconnect may be involved.
3. All wiring must comply with appropriate electrical
codes, ordinances and regulations. Use NEC Class 1
(Line Voltage) wiring.
4. Recommended wire size and type is to use up to two
no. 14, 16, or 18 copper conductors TTW60C, THW75C
or THHN90C, 600 volt insulation wire for all Line
Voltage terminals. For high temperature installations,
use wire selected for a temperature rating above the
noted maximum operating temperature. The flame
detector leadwires should be moisture resistant.
a. For the ignition leadwire, use Honeywell
specification no. R1061012 Ignition Cable or
equivalent. (This wire is rated at 350°F (177°C)
for continuous duty, and up to 500°F (260°C) for
intermittent use. It has been tested to 25,000
volts.)
b. For the flame detector F leadwire, use Honeywell
specification no. R1298020 or equivalent. (This
wire is rated at 400°F (204°C) for continuous duty.
It is tested for operation up to 600 volts and
breakdown up to 7500 volts.)
c. For ignition installation in a contaminating
environment, use Honeywell specification no.
R1239001 High Tension Ignition Cable or
equivalent. (This wire is resistant to severe
conditions of oil, heat and corona, and is tested to
withstand high voltages up to 25,000 Vrms in a
salt bath for one minute without breakdown. It is
rated at 200°F (93°C) for continuous duty, and up
to 350°F (177°C) for intermittent use.)
5. Recommended grounding practices:
a. Each 7800 SERIES Relay Module or S7830A will
have an earth ground terminal G that must be
grounded to the metal control panel with wire as
short as practical. Each ground wire must be
capable of carrying a fault current equal to the
rating of the protective fuse (20 amperes); a
number 14 copper conductor is adequate.
b. The earth ground provides a connection between
the subbase and the control panel or the
equipment. The earth ground wire must be
capable of conducting the current to blow the 20A
fuse (or breaker) in event of an internal short
circuit. The 7800 SERIES Relay Module needs a
low impedance ground connection to the
equipment frame which, in turn, needs a low
65-0084—35
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
impedance connection to earth ground. For a
ground path to be low impedance at RF
frequencies, the connection must be made with
minimum length conductors that have maximum
surface areas. Wide straps or brackets are
preferred rather than leadwires. Be careful to
ensure that mechanically tightened joints along
the ground path, such as pipe or conduit threads
or surfaces held together with fasteners, are free
of nonconductive coatings and have corrosionprotected mating surfaces.
6. Recommended wire routing for flame detector
leadwires:
a. Do not run high voltage ignition transformer wires
in the same conduit with the flame detection
wiring.
b. Do not route scanner wires in the same conduit
with line voltage circuits.
c. Scanner wiring not utilizing armor cable should
be enclosed in metal cable or conduit.
d. Follow directions in Flame Detector Instructions.
7. Maximum wire lengths for flame detector leadwires are
limited by the flame signal strength.
8. Make sure that loads do not exceed terminal ratings;
refer to the labels on the 7800 SERIES Relay Module,
or S7830A, or ratings in the 7800 SERIES Relay
Module or S7830A Specifications.
CHECKOUT
After installation, perform a complete check out of the system.
Follow information supplied by equipment manufacturer and
instructions furnished with the 7800 SERIES Relay Module or
S7830A.
SERVICE NO TE:
Voltage checks can be accomplished by using the
electrical access slots on the sides of the Q7800A,B.
Remove the electrical access slot covers on the
Q7800B before making the voltage checks.
WARNING
Electrical Shock Hazard.
Can cause serious injury or death.
Replace the electrical access slot covers on the
Q7800B after performing voltage checks or anytime
they are removed.
9. Check the power supply circuit. The voltage and
frequency tolerance must match those of the 7800
SERIES Relay Module or S7830A. Do not connect the
7800 SERIES Relay Module or S7830A to a power
supply circuit that is subject to line voltage variations,
such as would occur with on-off switching of heavy
loads. A separate power supply circuit may be required
for the 7800 SERIES Relay Module or S7830A. Add the
required disconnect means and overload protection.
10. Check all the wiring circuits and complete a
Checkout
or S7830A Specifications before installing the 7800
SERIES Relay Module or S7830A on the subbase.
11. Install the 7800 SERIES Relay Module or S7830A.
12. Restore power to the panel.
IMPORTANT
IMPORTANT
according to the 7800 SERIES Relay Module
Do not run high voltage ignition transformer wires in
the same conduit with the flame detector wiring.
Make sure no subbase wiring is projecting beyond
the terminal blocks. Tuck wiring in against the back
of the subbase so it does not interfere with the knife
blade terminals or bifurcated contacts.
Static
65-0084—3 6
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
65-0084—37
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7800 SERIES Q7800A,B 22-TERMINAL UNIVERSAL WIRING SUBBASE
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis MN 55408-0524
Honeywell Latin American Region
480 Sawgrass Corporate Parkway
Suite 200
Sunrise FL 33325
68-0084—3 G.R. Rev. 11-98
65-0084—3 8
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 3N7
Honeywell Europe S.A.
3 Avenue du Bourget
1140 Brussels
Belgium
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
www.honeywell.com
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