CARNES HXBG User manual

READ AND SAVE THESE INSTRUCTIONS
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FAN DISTRIBUTION UNITS
Model HXBG
I. MOUNTING
NOTE: For Fan Distribution Units shipped attached to humidifiers also refer to Carnes Humidifier
Catalog 900-0119.
The fan distribution unit must be mounted securely on a level and plumb surface at least four feet below the
ceiling to prevent steam from condensing on the ceiling surface. Allow 30 feet in front of the HXBG for the steam
to be absorbed into the air. Do not mount the units above any item that would be damaged if a water leak were
to develop. The humidifier or fan distribution unit must never be mounted outside or where it may be exposed to
freezing temperatures.
For remote mounted fan distribution units see Tables 1 and 2 below:
Table 1 - Maximum Operating Weight
Table 2 - Fastener Recommendations.
II. CONNECTING THE STEAM HOSE - Remote Units
Copper or Brass Tube is the only acceptable substitute
for Carnes Steam Hose or Condensate Hose
1. For guidelines on typical steam hose installation refer to Humidifier Installation, Operation and Maintenance
Instructions.
2. The steam hose should be installed so there is a continuous rise from the humidifier to the bottom connection
of the remote unit. Support the steam hose at intermediate points to prevent dips or pockets. If there are any low
point add a “T” fitting to drain condensate.
3. Any turns should have a minimum of 8” to prevent the hose from kinking.
4. Fasten the steam hose to the connection point on the manifold of the remote unit with one of the hose clamps
provided.
5. Push the steam hose through the opening on the top of the humidifier cabinet and slip over the outlet stub on
top of the cylinder. Fasten with the hose clamp provided.
III. CONNECTING THE CONDENSATE RETURN HOSE
- Remote Mounted Units
1. Fasten the condensate return line to the connection point on the manifold of the remote unit with the hose clamp
provided.
2. Follow the steam hose to the humidifier cabinet and secure the return line to the steam hose.
3. Connect the condensate return line from the fan distributor unit to the condensate return line at the top of the
humidifier cabinet.
4. If it is impossible to maintain a drop to the top of the cabinet, it is permissible to run the condensate return
line directly to the air gap drain fitting or some other common drain. If condensate is run to a common drain, a
trap must be incorporated close to the drain to prevent steam and/or hot water from entering.
Model Weight (lbs.)
HXBG 21
Type of Wall 4 Fasteners Required
Wood Studs or Solid Wall 1/4” Lag Screws, 1” minimum length
(Continued on reverse side of sheet)
COPYRIGHT © 2013 CARNES COMPANY
ALL RIGHTS RESERVED SUPERSEDES 16812-A 16812-B, Page 1
CARNES COMPANY 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] www.carnes.com

IV. ELECTRICAL CONNECTIONS
The Fan Distribution Unit’s fans are powered and controlled by the 12-pin connector on the back of the fan
bracket at the top of the unit.
The connector is pre-wired in the factory when the Fan Distribution Unit is mounted onto the humidifier.
When the unit is remote mounted, the customer must provide a 12-conductor cable to route the necessary sig-
nals from the humidifier. Each end of the cable should attach a 12-pin male connector provided separately by the
manufacturer. The customer must take care to make sure pin 1 on one end of the cable is routed to pin 1 on the
other end, pin 2 is routed to pin 2, etc. The 12-pin female connector is located on the top panel on the right hand
side of the humidifier.
The fans are powered by a 12V connection supplied from the circuit board. The connectors can carry up to 800mA
of current to the fans. Do not use any gauge wire smaller than 28 AWG. 24 AWG is recommended.
Before starting up the unit, please make sure there are jumpers on J17 (terminals 2 & 4) and J18. These
connection terminal blocks are located along the bottom edge of the circuit board.
V. OPERATION
1. Follow start up procedures as shown in Humidifier Installation, Operation and Maintenance Instructions.
2. The humidifier will not generate steam unless the fan in the distribution unit is running, this can be overridden
by jumping connector J18 on the humidifier circuit board.
VI. MAINTENANCE
1. Inspect the fans, inspect the water trap.
FORM 16812-B
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