Reznor Door Air Heater Option - Installation - Overhead Door Switch - Manual

Mfg P/N 124765
Applies to: "Door Air Heater" Application
Installation Form RZ-NA-I-OPT-DS
Obsoletes Form RGM 400-DS
OPTION BX1,
OVERHEAD DOOR
SWITCH
®
Description/Application
Although this overhead door is referred to as an option, it is a require-
ment for Reznor ® makeup air systems installed in a "door air heater"
application (A.G.A. certified to ANSI Z83.17 or C.G.A. approved to
CAN 1-3.12).
The switch is a Honeywell Micro-Switch precision limit switch (P/N
124253). The function of the switch is to energize and interlock the heat-
ing unit when an outside overhead door reaches approximately 80% of
full open travel. The switch will de-energize the furnace when the over-
head door closes approximately 20%. The complete door switch includes
a limit switch electrically wired to the heater and a roller yoke for me-
chanical activation by a field-supplied trigger on the overhead door.
Installation should be done by a qualified agency in accordance with the
instructions that follow and in compliance with all codes and require-
ments of authorities having jurisdiction. The agency performing this work
assumes responsibility for this installation.
All electrical wiring and connections, including electrical grounding
MUST be in accordance with the National Electric Code ANSI/NFPA
No. 70 (latest edition) or, in Canada, with the Canadian Electrical Code, Part 1-C.S.A. Standard C22.1. In addition, the installation must comply with
local ordinances and applicable gas company requirements.
Installation Instructions
Before beginning installation, read both the switch manufacturer's instructions and the "LEFT" and "RIGHT" instructions below. Follow all instruc-
tions carefully. In all cases, disconnect both the electrical power and the gas supply from the heater during installation of the door switch.
The switch is tapped for a 1/2" threaded (field-supplied) conduit connection.
The electrical connection must be sealed and the switch positioned
so that moisture will not enter through the connection. See switch specifications and heater wiring diagram for electrical information.
Option BX1, Overhead Door Switch (P/N 124253)
For installation indoors on the LEFT side of an automatic
overhead door:
WITH DOOR IN CLOSED POSITION. . .
1.
Mount the switch and the field-supplied activation trigger in loca-
tions so that mechanical contact will be made when the overhead
door is approximately 80% open. Secure the switch through the front
using two #10 x 2" long sheetmetal screws or through the back using
two #10 x 32 x 2" long studs. Attach field-supplied conduit connec-
tion.
2.
Loosen the two screws on the front of the switch that retain the termi-
nal access cover. Remove the cover exposing four wire terminals.
Pull the appropriate gauge
(no smaller than 18 gauge
and no larger then 12
gauge) protected control
wire through the conduit
connection. Attach the
conduit. Connect the wires
to pressure terminals #3
and #4. Connect the
ground wire.
3.
Using a 9/64" allen
wrench, attach the roller
yoke in the position illus-
trated in Figure 1. The
field-supplied door activa-
tion trigger must mechani-
cally activate the rollers
during both the opening
and closing of the over-
head door.
For installation indoors on the RIGHT side of an automatic
overhead door:
WITH DOOR IN CLOSED POSITION. . .
1.
Mount the switch and the field-supplied activation trigger in loca-
tions os that mechanical contact twill be made when the overhead
door is approximately 80% open. Secure the switch through the front
using two #10 x 2" long sheetmetal screws or through the back using
two #10 x 32 x 2" long studs. Attach field-supplied conduit connec-
tion.
2.
Loosen the two screws on the front of the switch that retain the termi-
nal access cover. Remove the cover exposing four wire terminals.
Pull the appropriate gauge
(no smaller than 18 gauge
and no larger then 12
gauge) protected control
wire through the conduit
connection. Attach the
conduit. Connect the wires
to pressure terminals #1
and #2. Connect the
ground wire.
3.
Using a 9/64" allen
wrench, attach the roller
yoke in the position illus-
trated in Figure 2. The
field-supplied door activa-
tion trigger must mechani-
cally activate the rollers
during both the opening
and closing of the overhead
door.
S witch Models and Specifications, Honeywell
Micro-switch #LSNIA-3P
Dimensions
4.2" H x 2.4" W x 1.9" D
Electrical Rating 10 Amp continuous at
230, 240, 480 or
600 VAC
60 Amp make and 6 Amp
break at 120 VAC
Contacts SPDT maintained, 1 set
normally open and 1 set
normally closed.
Ambient Rating 30 o F to 240 o F
Actuation Twin yoke roller lever
(rollers are at a 90 o angle)
Operating Force 4 lbs
NEMA Enclosure 3, 4, 6P and 13
REQUIRED
FOR ALL
DIRECT-FIRED
"DOOR AIR
HEATER"
APPLICATIONS
©2014 Reznor, LLC. All rights reserved. Printed In the U.S.A.
Trademark Note:
Reznor ® is registered in the United States and other countries.
0514 POD OG Form I-OPT-DS (Version 0.1)
Figure 2 - Roller Yoke Position
for "Right" Side Installation
(Door Closed)
Figure 1 - Roller Yoke Position
for "Left" Side Installation
(Door Closed)