Revision: UBX-UBZ-UDX-UDZ-HX (02-22) 1037154-0
HEAT EXCHANGER GASKET KIT INSTALLATION
FOR UNIT HEATERS
Supersedes: — (Original Version)
MODELS UBX, UBZ, UDX, AND UDZ
Table 1. Heat Exchanger Gasket Kit Components
Item
No.*
Component Size
Unit Size
030, 045 060, 075 100, 125 150, 175, 200 225, 250 300, 350, 400
Kit PN
1036360 1036361 1036362 201670 201671 201672
Component PN (Quantity)
1
Top/bottom header
panel gasket
5/8 × 21-3/8 1033925 (2) 1033925 (2) 1033925 (2) —
1 × 35-23/64 — 194533 (2) 194533 (2) 194533 (2)
2
Front/rear heater
panel gasket
5/8 × 12-5/8 1033922 (2) —
—5/8 × 15-5/8 — 1033923 (2) —
5/8 × 23-5/8 — 1033924 (2)
1 × 20-3/16
—
195986 (2) —
1 × 26-3/16 — 195987 (2) —
1 × 34-3/16 — 195988 (2)
3
Tube support
gasket
1 × 89-7/32 201424 (1) —
1 × 95-7/32 — 201425 (1) —
1 × 103-7/32 — 201426 (1)
*See Figure 1.
INSTALLATION
⚠ DANGER ⚠
• Improper installation could result in death, serious injury, and /or property damage. The qualified
agency performing this work assumes responsibility for this installation.
• Proper installation and sealing of the heat exchanger to the heater is necessary for reliable and
safe operation. Failure to properly install could result in property damage, personal injury, and/
or death.
• The replacement heat exchanger should be installed by a qualified service agency in compliance
with all codes and requirements of authorities having jurisdiction.
NOTE: Unit sizes 030–125 require the installation of four (4) gasket strips. Unit sizes 150–400 re-
quire the installation of five (5) gasket strips.
Install the heat exchanger gasket kit as follows (item numbers refer to Figure 1):
• To prevent damage during shipping or storage, gasket kits for replacement heat exchangers are shipped in a
parts bag.
• Gasket kits should be attached to the replacement heat exchanger at the time of installation.
• All gaskets are self-adhesive and are cut to size.
• Refer to the installation manual provided with the heater for important safety information.
• Ensure that all components listed in Table 1 are available before beginning installation.
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