Spruce RB Series User manual

IN018 Rev V 0120 13 Saber Way, Ward Hill, MA 01835 | spruce.com
RB Series
Installation Instructions
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IN018 Rev V 0120 23 Saber Way, Ward Hill, MA 01835 | spruce.com
Fan Installation & Operating Instructions
Please Read and Save These Instructions.
DO NOT CONNECT POWER SUPPLY UNTIL FAN IS COMPLETELY INSTALLED. MAKE SURE ELECTRICAL
SERVICE TO FAN IS LOCKED IN “OFF” POSITION. DISCONNECT POWER BEFORE SERVICING FAN.
1. WARNING! For General Ventilating Use Only. Do Not Use to Exhaust Hazardous, Corrosive or Explosive Materials,
Gases or Vapors. See Vapor Intrusion Application Note #AN001 for important information on VI Applications.
See RadonAway.com/vapor-intrusion.
2. NOTE: Fan is suitable for use with solid state speed controls; however, use of speed controls is not generally recommended.
2. WARNING! Check voltage at the fan to ensure it corresponds with nameplate.
3. WARNING! Normal operation of this device may affect the combustion airow needed for safe operation of fuel burning
equipment. Check for possible backdraft conditions on all combustion devices after installation.
4. NOTICE! There are no user serviceable parts located inside the fan unit. Do NOT attempt to open. Return unit to the factory
for service.
5. WARNING! Do not leave fan unit installed on system piping without electrical power for more than 48 hours. Fan
failure could result from this non-operational storage.
6. WARNING! TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
a) Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
b) Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to
prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely
fasten a prominent warning device, such as a tag, to the service panel.
c) Installation work and electrical wiring must be done by qualied person(s) in accordance with all applicable codes
and standards, including re rated construction.
d) Sufcient air is needed for proper combustion and exhausting of gases through the ue (chimney) of fuel burning
equipment to prevent backdrafting. Follow the heating equipment manufacturers’ guidelines and safety standards
such as those published by any National Fire Protection Association, and the American Society for Heating,
Refrigerating and Air Conditioning Engineers (ASHRAE), and the local code authorities.
e) When cutting or drilling into a wall or ceiling, do not damage electrical wiring and other hidden utilities.
f) Ducted fans must always be vented to outdoors.
g) If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be
connected to a GFCI (Ground Fault Circuit Interrupter) protected branch circuit.
RB SERIES FAN WIRING DIAGRAM

IN018 Rev V 0120 33 Saber Way, Ward Hill, MA 01835 | spruce.com
1.0 MOUNTING
The Spruce RB Series fans may be mounted at any angle without affecting performance although the vertical
mounting position shown in Fig. 1 is highly recommended. If the vertical mounting position is not possible, care
should be taken to avoid creating a low spot in the fan/duct system where condensation might accumulate in the
fan housing as shown in Fig. 2. In situations where horizontal mounting is desired and condensation is likely to
occur (bathroom ventilation in cold climates) this problem might be avoided by mounting the fan 30 degrees beyond
horizontal as shown in Fig. 3.
2.0 FAN SEALING
RB Series Fans are factory sealed, no additional caulk or other materials are required to inhibit air leakage.
3.0 DUCTING
Any type of ducting is acceptable, however, exible nonmetallic ducting is recommended for easy installation and
quieter operation. Insulated exible ducting is highly recommended in cold climates to prevent the warm bathroom air
from forming condensation in the ducting where it is exposed to colder attic air. The outlet of the fan should always
be ducted to the outside. Avoid venting the outlet of the fan directly into an attic area. The excess moisture from the
bathroom can cause damage to building structure and any items stored in the attic. Multiple venting points may be
connected together using a T or Y tting. Ideally duct should be arranged such that equal duct lengths are used
between intake and T or Y tting, this will result in equal ow rates in each intake branch. If adjustable intake
grilles are used on multi-intake systems, then the opening on each grill should be equal in order to minimize noise
and resistance. Straight smooth runs of rigid metal ducting will present the least resistance and maximize system
performance. The Equivalent Length of Rigid Metal Ducting resulting in .2” WC pressure loss for each fan model is
provided in the specication section of these instructions. Flexible ducting, if used, must always be as close to being
fully extended as possible. Formed rigid metal duct elbows will present the least resistance and maximize system
performance, recommended bend radius of elbow is at least 1.5 x duct diameter.
To ensure quiet operation of our inline and remote fans, each fan shall be installed using sound attenuation
techniques appropriate for the installation. For bathroom and general ventilation applications, at least 8 feet of
insulated exible duct shall be installed between the exhaust or supply grille(s) and the fan. RB Series fans are not
suitable for kitchen range hood remote ventilation applications. The ducting from this fan to the outside of the building
has a strong effect on the airow, noise and energy use of the fan. Use the shortest, straightest duct routing possible
for best performance, and avoid installing the fan with smaller ducts than recommended. Insulation around the ducts
can reduce energy loss and inhibit mold growth. Fans installed with existing ducts may not achieve their rated airow.
Fan Installation & Operating Instructions
Fan Series
RB110 p/n 28128
RB190 p/n 28578
RB275 p/n 28115
RB300 p/n 28088
RB350 p/n 28261
RB400 p/n 28206
RB500 p/n 28207

IN018 Rev V 0120 43 Saber Way, Ward Hill, MA 01835 | spruce.com
4.0 BACKDRAFT DAMPERS
Backdraft dampers allow airow in only one direction preventing cold/hot drafts from entering the vented area and
minimize possible condensation and icing within the system while the fan is not operating. Backdraft dampers
are highly recommended at each intake grille for bathroom ventilation in all cold climate installations. Installation
instructions are included with Spruce backdraft dampers.
5.0 ELECTRICAL WIRING
All wiring must be performed in accordance with the National Fire Protection Association’s (NFPA) ”National Electrical
Code, Standard #70” current edition for all commercial and industrial work, and state and local building codes.
All wiring must be performed by a qualied and licensed electrician. A Ground Fault Interrupter (GFI) circuit is not
required in most installations; check your local codes. Ensure that all exterior electrical boxes are outdoor rated and
properly sealed to prevent water penetration into the box. A means, such as a weep hole, is recommended to drain
the box. Note that the fan is not intended for connection to rigid metal conduit.
6.0 APPLICATIONS
Suitable for general ventilation, bathroom venting, fresh air supply, duct boosting, building pressurization, etc.
Not suitable for kitchen range hood venting.

IN018 Rev V 0120 53 Saber Way, Ward Hill, MA 01835 | spruce.com
7.0 INSTALLATION
Step 1: Install Mounting Bracket as shown (Fig. 4) (RB110, RB190 &
RB275 only; separate instructions for RB400 & RB500 are included with
Mounting Bracket Kit). Insert Grommets into slots in Mounting Bracket. Orient
the Electrical Box relative to Mounting Bracket as required. Attach the fan to
the Mounting Bracket with 3 #10 self-tapping screws, provided. Avoid over
tightening screws.
Step 2: Select location for fan mounting. A location 2/3 along the ducting, a
minimum of 10 feet away from the inlet vent to the fan or the Y/T of a multi-
intake system- will provide the quietest operation. Fan should be mounted
vertically to prevent moisture from accumulating in the fan housing. Attach
bracket to mounting structure with the 1 1/4” screws provided (Fig. 5).
Step 3: Connect ductwork between fan inlet and area to be vented through
inlet grille (Fig. 6). Flexible, nonmetallic ducting is recommended for
quietest operation and easiest installation. Insulated exible ducting is highly
recommended for bathroom ventilation in all cold climate installations.
Metal worm drive clamps, spring clamps, and adjustable plastic ratchets are
recommended for connection of ducting. Silicon caulk or duct tape may be
used for additional sealing. Duct tape should be used to retain insulation.
Step 4: Connect inlet grille(s) (Fig. 7). An optional backdraft damper may
be installed in the inlet grille to prevent cold air from backing into the inlet,
prevent conditioned air from escaping and also prevent condensation from
forming inside the ductwork. Backdraft dampers are highly recommended at
each intake grille for bathroom ventilation in all cold climate installations.
Step 5: Connect outlet of fan to outside vent (Fig. 8). The outside vent may
go through the roof, sidewall or soft as desired. Flexible, nonmetallic ducting
is recommended for quietest operation and easiest installation. Insulated
exible ducting is highly recommended for bathroom ventilation in all cold
climate installations.
Step 6: Make electrical connection to fan (Fig. 9). Ensure any metal ling
used in the installation is properly grounded. A plastic cable connector such
as a T&B #3300 may be used to avoid any ling grounding problem. Observe
the proper wiring connections (See Section 5.0). Note that the fan is not
intended for connection to rigid metal conduit.

IN018 Rev V 0120 63 Saber Way, Ward Hill, MA 01835 | spruce.com
Mounting: Mounting bracket included.
Recommended Ducting: 4”, 6”, 8” or 10” Rigid or Flexible Ducting
Storage Temperature Range: 32-100 degrees F.
Continuous Duty: 3000 RPM
Thermally Protected: Class F Insulation [RB190 Class B]
Rated for Indoor use only
Rated for Residential and Commercial use
Suitable for use with solid state speed controls
Suitable for use over tub or shower
The following chart shows fan performance for RB Series Commercial/Residential Fans:
RB SERIES PRODUCT SPECIFICATIONS
Typical CFM vs. Static Pressure "WC
Power Consumption @ 120 VAC, 60Hz (2.0 Amp Maximum)
Size Chart
RB110 ONLY
RB110 130 c (266 F)
RB190 130 c (266 F)
RB275 150 c (302 F)
RB300 150 c (302 F)
RB350 150 c (302 F)
RB400 150 c (302 F)
Thermal Cutout
0" .2" .5" .75" 1.0" 1.25" 1.5" 1.75" 2.0"
RB110 121 100 68 20 - - - - -
RB190 158 148 140 135 109 53 33 - -
RB275 251 210 157 117 70 26 - - -
RB300 318 270 211 170 135 87 30 - -
RB350 334 299 247 210 176 142 116 87 52
RB400 531 490 415 340 268 200 139 84 41
Fan Model "A" Dim "B" Dim "C" Dim Duct Size Weight L.2
RB110 9.7" 3.9" 8.5" 4" 5 lbs 30 ft
RB190 9.7" 3.9" 8.5" 4" 6.2 35
RB275 11.8" 5.9" 9" 6" 5.5 lbs 48 ft
RB300 13.4" 5.9" 9" 6" 8 lbs 40 ft
RB350 13.4" 5.9" 9" 6" 8.5 lbs 30 ft
RB400 13.4" 7.9" 10.5" 8" 11.5 lbs 57 ft
RB110 14-20 watts
RB190 46-62 watts
RB275 47-65 watts
RB300 66-87 watts
RB350 91-129 watts
RB400 96-138 watts
L.2= Estimated Equivalent Length of Rigid Metal Ducting resulting in .2in WC pressure loss for Duct
Size listed. Longer Equivalent Lengths can be accommodated at Flows Lower than that at .2in WC
pressure loss (see CFM Vs Static Pressure “WC Table). Do not operate fan above 80% of maximum
Static Pressure per performance table.

IN018 Rev V 0120 73 Saber Way, Ward Hill, MA 01835 | spruce.com

IN018 Rev V 0120 83 Saber Way, Ward Hill, MA 01835 | spruce.com
IMPORTANT INSTRUCTIONS TO INSTALLER
Inspect the RB Series Fan for shipping damage within 15 days of receipt. Notify Spruce of any damages immediately.
Spruce is not responsible for damages incurred during shipping. However, for your benet, Spruce does insure shipments.
There are no user serviceable parts inside the fan. Do not attempt to open. Return unit to factory for service.
Install the RB Series Fan in accordance with all state and local building codes and state regulations.
Warranty
Spruce warrants that the RB Series Fan (the “Fan”) will be free from defects in materials and workmanship for a period of 60 months (5
years) from the date of purchase or 66 months from the date of manufacture, whichever is sooner (the “Warranty Term”).
Spruce will replace any fan which fails due to defects in materials or workmanship during the Warranty Term. This Warranty is
contingent on installation of the Fan in accordance with the instructions provided. This Warranty does not apply where any repairs or
alterations have been made or attempted by others, or if the unit has been abused or misused. Warranty does not cover damage in
shipment unless the damage is due to the negligence of Spruce.
The Fan must be returned (at Owner’s cost) to the Spruce factory. Any Fan returned to the factory will be discarded unless the Owner
provides specic instructions along with the Fan when it is returned regardless of whether or not the Fan is actually replaced under this
warranty. Proof of purchase must be supplied upon request for service under this Warranty.
Spruce is not responsible for installation, removal or delivery costs associated with this Warranty.
LIMITATION OF WARRANTY
EXCEPT AS STATED ABOVE, THE RB SERIES FANS ARE PROVIDED WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULARPURPOSE.
IN NO EVENT SHALL SPRUCE BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES ARISING OUT OF, OR RELATING TO, THE FAN OR THE PERFORMANCE THEREOF. SPRUCE’S AGGREGATE LIABILITY
HEREUNDER SHALL NOT IN ANY EVENT EXCEED THE AMOUNT OF THE PURCHASE PRICE OF SAID PRODUCT. THE SOLE AND
EXCLUSIVE REMEDY UNDER THIS WARRANTY SHALL BE THE REPAIR OR REPLACEMENT OF THE PRODUCT, TO THE EXTENT
THE SAME DOES NOT MEET WITH SPRUCE’S WARRANTY AS PROVIDED ABOVE.
For service under this Warranty, contact Spruce for a Return Material Authorization (RMA) number and shipping information. No returns
can be accepted without an RMA. If factory return is required, the customer assumes all shipping costs, including insurance, to and from
factory.
Spruce™
3 Saber Way, Ward Hill, MA 01835 USA
TEL [phone]
FAX [phone]
Email to: [email protected]
Record the following information for your records:
Serial Number: Purchase Date: