Reznor CL31 Manual

RELAY KIT INSTALLATION FOR MULTIPLE UNIT CONTROL
GAS-FIRED DOWNFLOW HEATER MODEL LDAP, AND
GAS-FIRED UNIT HEATER MODELS UBX, UBZ, UDX, UDZ, AND UEZ
• DO NOT use these multiple unit control options with a two-stage thermostat.
• These instructions are designed to assist a qualified electrician in installing this multiple unit
control kit. For maximum safety, the control is installed in the low voltage circuit. Interruption
of the supply voltage is not recommended.
• 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, CSA Standard C22.1. In addition, the installation must comply with local
ordinances and applicable gas company requirements.
NOTE: Option CL31 includes components for one control unit and one additional unit. Option
CL32 includes components for each additional non-control unit. Not all kit components will be
used on all models.
• These relay kits are designed to permit the control of up to five units (one control unit and up to four additional
non-control units) with one single-stage thermostat or with a time clock and one or more single-stage thermostats.
• Refer to the installation manual provided with the unit for important safety information.
• Ensure that all components listed in
Item
Component
*
No.
1 Assembly
Relay
2 Relay
3 Bracket Relay
4 Screw
5 Cable clamp 3/16
6 Label Wiring diagram
7 Transformer 40VA
8 Wiring harness Assembly
*See Figure 1, Figure 2, Figure
**
Includes relay(s) (item 2), 24VAC DPDT plug(s) (PN 211411), and socket(s) with wires and terminals (PN 211415). If replacing a
previously-used relay only (PN 98118) on an LDAP unit, order replacement kit PN 263527.
DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
OPTIONS CL31 AND CL32 FOR
ELECTRIC UNIT HEATER MODEL EUH,
DESTRATIFICATION FAN MODEL H,
⚠ CAUTION ⚠
RELAY KITS
Table 1
are available before beginning installation.
Table 1. Relay Kit Components
Description LDAP
1041280
**
208365 (2)
—
38529 (4)
—
3, Figure 4, Figure 5, and Figure
Revision: OPT-CL31,32 (08-23) 1042699-B
Supersedes: OPT-CL31,32 (05-23) 1042699-A
LDAP-CL31,32 (05-23) 1041278-B
Option
CL31
Model
EUH
H, UBX, EUH
(208V,
UBZ (480V)
240V)
Kit PN
1041281 1042927 1042928
Component PN (Quantity)
—
18549 (2)
197157 (2)
195249 (4)
16228 (2)
197164 (2)
621709 (1) 202661 (1) 194808 (1)
—
1042929 (1)
6.
CL32
EUH, H,
UDX, UDZ, UBX, UBZ,
LDAP
UEZ UDX, UDZ,
UEZ
1041288 1041286 1041287
208365 (1) —
18549 (1)
— 197157 (1)
38529 (2) 195249 (2)
— 16228 (1)
197164 (1)
—
197160 (1)