CCI Thermal Technologies Ruffneck FR Series User manual

Owner’s Manual
Heat-Exchanger Unit Heaters
FR (Frost Resistant) & HP (High Pressure) Series Heaters
ISO 9001
This manual covers the installation, maintenance, repair
and parts for all FR and HP series heaters.
Part No. 5347.Rev.11.03
Issue Date: April 2015
Printed in Canada
Ruffneck™ is a key brand of CCI Thermal Technologies Inc.
Copyright © 2015. All rights reserved.
APPROVED LOCATIONS
The Forced Air Heaters are CSA listed,
certified for the following locations:
Class I, Divisions 1 & 2, Groups C & D;
Class II, Division 1 & 2, Groups E, F, & G;
Class III, Division 1 & 2;
Temperature Code T3B 329˚F (165˚C)
(On Applicable Models Only)
For details of hazardous locations with potential for
explosion, refer to the Canadian Electrical Code, Part 1,
Section 18 or National Electrical Code articles 500-516.
WARNING!
READ ALL IMPORTANT NOTICES ON PAGE 3.
PLEASE ADHERE TO INSTRUCTIONS PUBLISHED IN THIS MANUAL.
Failure to do so may be dangerous and may void certain provisions of your warranty.
®

2
For Heat-Exchanger Unit Heaters
HEATER MAINTENANCE CHECKLIST
Heater Model:
Date of Maintenance:
Comments:
Serial No.:
Maintenance Done By:
WARNING!
Heater should only be serviced by qualied personnel with heating equipment experience.
Disconnect heater from power supply before servicing heater. Lock the switch in the
“OFF” (open) position and/or tag the switch to prevent unexpected power application.
PERIODIC (before and as required during heating season)
1. CLEAN Finned Tubes
Fan
Fan Guard
Motor
Louvers
2. CHECK Motor for smooth, quiet operation
Louvers for proper angle and tightness
Electrical junction box cover for tightness
ANNUAL (before heating season)
Remove dust using compressed air. Do not spray with water or solvents.
1. ELECTRICAL
Check all terminal connections and conductors. Tighten loose connections. Conductors with
damaged insulation must be replaced.
2. MECHANICAL
Check for uid leakage. If any uid leakage occurs from the heater, remove it from service and
have the heat exchanger replaced. A factory supplied heat exchanger can be shipped in less
than a week from stock. Refer to the “Repair and Replacement” section for details.
Electrical junction box. Inside of enclosure must be clean, dry, and free of foreign materials.
Cover must be completely on and tight.
Check motor shaft bearing play. Replace motor if play is excessive or if motor does not run
quietly and smoothly. Motor bearings are permanently lubricated.
Check fan. Replace immediately if cracked or damaged.
Check louvers. Louver screws should be tight. Louvers are not to be closed more than 75˚
from horizontal.
Check the tightness of all hardware. All nuts and bolts, including mounting hardware, must be
tight.
TURN HEATER MOTOR ON FOR A MINIMUM OF 15 MINUTES. Check for air exiting heater
through louvers and smooth running of fan motor.
For assistance, please call
Toll Free: 1-800-661-8529 (24 hrs)
U.S. & Canada
Photocopy
this page
for reuse.

3
DESCRIPTION
Two basic types of Ruffneck™ Heat Exchanger congurations are available from CCI Thermal Technologies Inc.:
FR (Frost Resistant) Series - for steam service only, up to 100 psi (690 kPa) on select models
HP (High Pressure) Series - for steam and liquid service up to 400 psi (2,700 kPa) on select models
LOCATION OF HEATERS
The following guidelines have been established by CCI Thermal Technologies Inc. to ensure that you properly locate the
heaters in your building. These are only suggestions, and variations may be deemed necessary depending on application.
1. When occupant comfort is the major objective, heaters should be positioned so that the airow is directed to areas
of highest heat loss (i.e., doorways, windows and outside walls).
2. For personnel comfort, a less turbulent and more even air distribution is required. To achieve this effect a larger
quantity of smaller unit heaters should be installed.
3. When equipment protection is of utmost concern, heaters should be positioned so that the airow is directed
towards the equipment.
4. In very large areas, arrangement of heaters should be such that the air will exit from one heater and be projected
towards the inlet, or back, of another heater. A rotational airow will result, with air circulation in the central area of
the building.
INSTALLATION
IMPORTANT NOTICES
WARNING!
Read and adhere to the following. Failure to do so may result in severe or fatal injury.
WARRANTY WILL BE VOID
IF INSTRUCTIONS ARE NOT FOLLOWED
1. Read and follow the instructions in this manual.
2. Heater to be used only in the hazardous locations indicated on the
heater’s data plate.
3. Heater is for dry indoor use only. Do not immerse in water. Do not
store or use in areas exposed to rain or snow.
4. Heater is to be connected and serviced only by a qualified electrician
experienced with hazardous location equipment.
5. Installation, piping, and wiring of he heater must adhere to all
applicable codes.
6. It is essential that any unit heater that will be used in a hazardous
(classied) location is equipped with a electric motor approved for
such service, and the temperature of the heat transfer medium is
below the ignition temperature of the atmosphere. Refer to applicable
electrical codes for additional information.
7. Disconnect heater from power supply at integral disconnect or fuse
box before opening enclosures or servicing heater. Lock the switch in
the “OFF” (open) position and/or tag the switch to prevent unexpected
power application. IF INTEGRAL DISCONNECT IS BEING
SERVICED, verify that power has been disconnected at fuse box or
main panel. Lock the switch in the “OFF” (open) position and/or tag
the switch to prevent unexpected power application.
8. Do not operate heater in atmospheres which are corrosive to steel
or aluminum, unless it has been coated with a factory approved
protective coating.
9. For steam service use only single-pass models. Refer to model
coding (page 7) for number of passes in heat exchanger.
10. Refer to heat exchanger data plate for pressure and temperature
limits.
11. Heater must be kept clean. When operating in a dirty environment,
regularly clean the nned tubes, fan and fan guard. Follow the
recommended maintenance procedures. Refer to the “Heater
Maintenance Checklist” section for details.
12. Use factory approved replacement parts only.
13. If there are any questions or concerns regarding the heater, contact
the factory. Refer to the last page of this manual for details.
14. HVAC uids must be non-ammable, non-compressable, non-
explosive & non-toxic.
15. Do not operate the heater with any of the louvers fully closed or
overriding their stops.
16. Do not operate heater in ambient temperatures above 104°F (40°C).
17. See applicable electrical codes for seal requirements in eld installed
conduits. Factory installed conduits require no further sealing.
18. Base of the heater is to be mounted a minimum of 7.9 ft (2.4 m)
above the oor. Refer to the “Installation” section for details.
19. Working uid temperature must not exceed 200°C (392°F) to ensure
compliance with temperature code.

4
5. When arranging heaters, check the fan throws for the heaters being mounted (see table below). Although it is not
generally required that the fan throws reach the next heater, air circulation must be sufcient to prevent cold spots
from occurring.
6. Do not install heaters such that airow is blocked or impeded by equipment or walls.
7. For warehouses or large workshops, it may be acceptable to use fewer, but larger, heaters mounted well above oor
level. It has to be recognized, however, that only the largest heaters have long fan throw distanced.
FAN THROWS FOR RUFFNECKTM HEAT-EXCHANGER UNIT AIR HEATERS
MODEL
FR/HP - 12
FR/HP - 16
FR/HP - 20
FR/HP - 24
FR/HP - 30
FR/HP - 36
MOTOR HP
1/2
1/2
1/2
1/2
3/4
1 1/2
RPM
1725
1725
1725
1725
1140
1725
THROW IN FEET
40
60
65
70
70
60
NOISE LEVELS
Where personnel inhabit a room or building for long periods of time, and local ambient noise levels are low, the noise from
the heaters has to be considered. Typically, the smaller the heater the lower the noise level will be. The largest heaters
that move large volumes of air are noticeably noisier than units handling low volumes of air.
MEASURED SOUND LEVELS OF RUFFNECKTM HEAT-EXCHANGER AIR UNIT HEATERS
MODEL
FR/HP - 12
FR/HP - 16
FR/HP - 20
FR/HP - 24
FR/HP - 30
FR/HP - 36
REAR
61
70
66
74
74
76
FRONT
61
70
66
74
74
76
SOUND LEVEL dBA
Note:
Sound levels were measured at a distance of 15 feet with louver blades horizontal and sound
meters on centre line of heater (i.e., in line with motor/fan shaft).
MOUNTING
Although Ruffneck™ Unit Heaters are designed to be installed in an upright and level position, they may be installed
in other positions. However, for steam service the inlet must be above the outlet and the bottom of the core must drain
toward the outlet. They are designed to be suspended from the top of the cabinet either with two or four (depending on
model) 5/8” NC bolts screwed into internally threaded holes provided in the cabinet top panel. It is essential that adequate
structural support be provided for installation.
Basic Mounting Kits (BMK), Hanging Mounting Kits (HMK), Swivel Hanging Mounting Kits (SHMK) or Wall Mounting Kits
(WMK) are available for Ruffneck™ heaters. If the strength of the structure is not adequate to support the units, a suitable
alternative such as the Ruffneck™ Pipe Mounting Kit (PMK) would be recommended to ensure safe and proper operation.
The HMK is the only suitable mounting kit for the 30” and 36” heater models.

5
4
SHUT-OFF VALVE
PITCH DOWN
UNION
6 in. (152 mm) LONG
FULL SIZE
DIRT POCKET
RETURN
SUPPLY
PITCH DOWN
DRAIN VALVE
AUTOMATIC
AIR VENT
OR
PETCOCK.
SHUT-OFF VALVE
BALANCING
VALVE
UNION
Where heaters are installed in applications that are of a relocatable or transportable nature such as land or offshore drilling
rigs, an adequate mounting structure should be supplied to withstand all probable load conditions. Such load conditions
should recognize abuse situations such as truck off-loading impacts, etc. It is recommended that lock washers be used
beneath the bolt heads for these installations.
Heaters may be mounted at any reasonable height above floor level depending on the purpose of the heater. When
equipment is placed in a seldomly occupied building, the heaters may be placed at a low level. When heaters are required
to ensure personnel comfort, they should be mounted overhead. Typically, mounting heights range from 7 1/2 feet to 12
feet. All Ruffneck™ heaters have louvers installed that allow air flow to be directed from horizontal to 60 degrees or greater
downward deflection. Louvers should never be set to within less than 15 degrees of the closed position.
CLEARANCES FOR MAINTENANCE
It is important to provide adequate clearance around the heater for servicing. Allow enough space to permit easy fan or
motor replacement. Do not position the back of the fan motor against a surface, as air for the cooling fan will be blocked. It
is advisable to leave at least 2” clearance between the rear of the motor and the nearest obstruction. For easy removal of
the heat exchanger core assembly, it is important to leave clearance beneath the heater equal to the height of the heater
cabinet plus two inches.
PIPING APPLICATIONS
The following piping application and arrangements are only suggestions. Since it is impractical to cover all possible
applications, please refer to detailed piping references for more information.
Below are suggested piping arrangements.
FIG.1
UNIT HEATER
CONNECTIONS TO
OVERHEAD
FLUID MAINS
NOTES:
1. Do not use with fluids corrosive to steel
2. Install using proper piping practices.
Where heaters are installed in applications that are of a relocating or transportable nature such as land or offshore drilling
rigs, an adequate mounting structure should be supplied to withstand all probable load conditions. Such load conditions
should recognize abuse situations such as truck off-loading impacts, etc. It is recommended that lock washers be used
beneath the bolt heads for these installations.
Heaters may be mounted at any reasonable height above oor level depending on the purpose of the heater. When
equipment is placed in a seldom occupied building, the heaters may be placed at a low level. When heaters are required
to ensure personnel comfort, they should be mounted overhead. Typically, mounting heights range from 7 1/2 feet to 12
feet. Heaters CSA certied must be mounted at a minimum height of 7.9 ft (2.4 m) above the oor. All Ruffneck™ heaters
have louvers installed that allow air ow to be directed from horizontal to 60 degrees or greater downward deection.
Louvers should never be set to within less than 15 degrees of the closed position.
CLEARANCES FOR MAINTENANCE
It is important to provide adequate clearance around the heater for servicing. Allow enough space to permit easy fan or
motor replacement. Do not position the back of the fan motor against a surface, as air for the cooling fan will be blocked. It
is advisable to leave at least 2” clearance between the rear of the motor and the nearest obstruction. For easy removal of
the heat exchanger core assembly, it is important to leave clearance beneath the heater equal to the height of the heater
cabinet plus two inches.
PIPING APPLICATIONS
The following piping application and arrangements are only suggestions. Since it is impractical to cover all possible
applications, please refer to detailed piping references for more information.
Below are suggested piping arrangements.
Fluid temperature not to exceed 200°C (392°F) for use in hazardous locations. Use supply wire suitable for 90°C (194°F),
cable entries suitable for IP 54 and use in hazardous locations.
Heater is to be used only in atmospheres having an ignition temperature higher than the heater’s maximum rated
operating temperature as shown on the heater data plate. Refer to applicable electrical codes for additional information.
Installer to provide certied Ex “d” sealing ttings and stopping boxes for the same gas groups as the apparatus.

6
5
FIG.2
UNIT HEATER CONNECTION
FOR LOW-PRESSURE STEAM,
OPEN GRAVITY OR VACUUM
RETURN SYSTEM
NOTES:
1. For medium to high-pressure systems a bucket
or float trap must be used.
2. Do not use with fluids corrosive to steel.
3. Install using proper piping practices
4. In horizontal pipe runs, use eccentric reducers only.
5. Use a properly sized steam trap.
FIG.3
UNIT HEATER CONNECTIONS
TO OVERHEAD STEAM AND
RETURN MAINS
NOTES:
1. This piping arrangement is only for two-position-type
control. Modulating steam control may not provide
sufficient pressure to lift condensate to return main.
2. Do not use with fluids corrosive to steel.
3. Install using proper piping practices.
4. In horizontal pipe runs use eccentric reducers only.
5. Use a properly sized steam trap.
TAP INTO TOP OF MAIN
SHUT-OFF VALVE
UNION
PITCH DOWN
UNION
RETURN
MAIN
TAP INTO TOP OF MAIN SHUT-OFF VALVE
PITCH DOWN
FULL SIZE DROP LEG
10.0 in. Min.
(254 mm)
SHUT-OFF VALVE
RETURN MAIN
PITCH
DOWN
LIFT NOT TO EXCEED 1 FT FOR
EACH POIND PRESSURE
DIFFERENCE BETWEEN STEAM
AND RETURN MAINS
THERMOSTATIC AIR
VENT OR PETCOCK.
(INSTALL IF TRAP DOES
NOT HAVE AIR VENT)
SHUT-OFF
VALVE
FLOAT AND
THERMOSTATIC
TRAP
STEAM
MAIN
UNION
UNION
UNION
UNION
SWING CHECK VALVE
STEAM TRAP WITH AIR VENT
STRAINER AND DRAIN VALVE
6 in. (152mm) LONG
FULL SIZE
DIRT POCKET
STRAINER
10 IN. Min.
(254 mm) FULL SIZE DROP LEG
6 in. (152mm) LONG
FULL SIZE
DIRT POCKET
UNION

7
PHYSICAL DIMENSIONS
DIM
in (mm)
FR/HP12 FR/HP 16 FR/HP 20 FR/HP 24 FR/HP 30 FR/HP 36
A16 5/6 (415) 20 5/16 (516) 24 5/6 (618) 28 3/8 (720) 34 7/16 (874) 42 5/8 (1083)
B16 3/8 (416) 20 5/6 (517) 24 5/16 (618) 28 1/4 (718) 34 5/16 (872) 42 5/8 (1083)
C 4 (102) 4 (102) 4 (102) 4 5/8 (118) 5 11/16 (145) 5 1/2 (140)
D 9 3/4 (248) 9 3/4 (248) 10 1/2 (267) 11 13/16 (300) 13 3/4 (350) 23 5/8 (600)
E 12 5/8 (320) 15 1/2 (394) 19 1/2 (495) 23 7/16 (596) 29 1/2 (750) 37 3/8 (950)
F 11 (280) 15 (381) 17 (432) 19 11/16 (500) 25 9/16 (650) 29 1/2 (750)
G N/A 1 3/4 (44) 2 1/2 (63) 2 3/4 (70) 3 1/8 (80) 3 1/8 (80)
H6 3/4 (172) 5 3/4 (147) 5 3/4 (146) 6 11/16 (170) 7 1/2 (190) 9 7/16 (240)
I2 5/8 (68) 2 5/8 (68) 3 5/8 (93) 4 5/16 (109) 4 3/8 (111) 6 7/16 (163)
J 1 7/8 (48) 2 3/4 (70) 2 7/8 (73) 3 (76) 3 1/8 (80) 3 (76)
K* (MAX) 21 1/4 (540) 21 1/4 (540) 22 7/16 (570) 23 5/8 (600) 25 3/16 (640) 34 5/8 (880)
L (MAX) 1 5/8 (42) 1 5/8 (42) 1 5/8 (42) 1 5/8 (42) 1 7/8 (47) 1 3/4 (45)
M 24 3/8 (619) 28 5/16 (720) 32 5/16 (821) 36 1/4 (921) 42 5/16 (1075) 50 5/8 (1286)
Core weight
lbs (Kg)
27 (12) 38 (17) 48 (22) 91 (41) 121 (55) 175 (79)
Unit weight
lbs (Kg)
80 (36) 100 (45) 126 (57) 191 (87) 286 (130) 444 (202)
Shipping weight
lbs (Kg)
132 (60) 148 (67) 174 (79) 214 (97) 321 (146) 526 (239)
Note:
*May vary with motor used.

8
ELECTRICAL WIRING
7
RuffneckTM fan-forced unit heaters and heat exchangers may be thermostatically controlled if required. Usually the flow of
heat transfer fluid is allowed to pass through the heat exchanger without interruption. The fan motor, in such cases, shuts
on and off by an electrical thermostat. Air flow through the heater is thus controlled. A small amount of heat will radiate
from the heat exchanger when the fan is inoperative but this is usually tolerable. Absolute control of heat output from the
heat exchanger would require that steam or flow of hot liquid to the heat exchanger be shut off. Such control of the heat
transfer medium is possible by thermostatic valve control, separately or in combination with thermostatic fan control.
Typically a manual shut-off valve is placed in the steam or liquid line for control purposes.
SUPPLY VOLTAGE
208/230V
1PH
208/230 VOLT
CONTACTOR COIL
(NOT SUPPLIED)
EXTERNAL CONTROL PANEL
(NOT SUPPLIED)
230 VOLT
THERMOSTAT
THERMOSTATIC CONTROL FOR
208/230 VOLTS, 1 PHASE
THERMOSTATIC CONTROL FOR
115 VOLTS, 1 PHASE
THERMOSTATIC CONTROL FOR
208/230 VOLT, 3 PHASE MOTORS
C/W EXTERNAL HIGH-LIMIT WIRES
THERMOSTATIC CONTROL FOR
208/230 VOLTS, 3 PHASE
THERMOSTATIC CONTROL FOR
460/600 VOLTS, 3 PHASE
THERMOSTATIC CONTROL FOR
460/600 VOLT, 3 PHASE MOTORS
C/W EXTERNAL HIGH-LIMIT WIRES
FAN
MOTOR
FAN
MOTOR
FAN
MOTOR
FAN
MOTOR
SUPPLY VOLTAGE
115 VOLTS
1 PH
NEUTRAL
115 VOLT
THERMOSTAT
SUPPLY
VOLTAGE
208/230
VOLTS
3PH
SUPPLY VOLTAGE
208/230
VOLTS
3PH
208/230 VOLT
CONTACTOR COIL
3 POLE CONTACTOR RELAY
(NOT SUPPLIED)
EXTERNAL CONTROL PANEL
(NOT SUPPLIED)
3 POLE CONTACTOR RELAY
(NOT SUPPLIED)
SUPPLY
VOLTAGE
460/600
3PH
VOLTAGE
TRANSFORMER
(NOT SUPPLIED)
EXTERNAL CONTROL PANEL
(NOT SUPPLIED)
24 TO 230 VOLT
THERMOSTAT
230 VOLT
THERMOSTAT
208/230 VOLT
CONTACTOR COIL
MOTOR C/W EXTERNAL
HIGH-LIMIT WIRES
230 VOLT
THERMOSTAT
EXTERNAL CONTROL PANEL
(NOT SUPPLIED)
SUPPLY VOLTAGE
460/600
VOLTS
3PH
EXTERNAL CONTROL PANEL
(NOT SUPPLIED)
VOLTAGE
TRANSFORMER
(NOT SUPPLIED)
24 TO 230 VOLT
THERMOSTAT
3 POLE CONTACTOR RELAY
(NOT SUPPLIED)
MOTOR C/W EXTERNAL
HIGH-LIMIT WIRES
3 POLE CONTACTOR RELAY
(NOT SUPPLIED)
FAN
MOTOR
FAN
MOTOR
24 TO 230
VOLTS
24 TO 230
VOLTS
NOTES:
- Installation must comply with local electrical code.
- For internal wiring of control devices and starters, consult device manufacturer.
- The thermostat must have an electrical rating equal to or exceeding the HP, line voltage and current expected.
- For wiring of fan motor, refer to diagram on the motor name plate.
- Some motors may be equipped with external high-limit wires. These wires must be connected in series with the motor control circuit. (see
appropriate diagrams above)
ELECTRICAL WIRING
RuffneckTM fan-forced unit heaters and heat exchangers may be thermostatically controlled if required. Usually the ow of heat transfer uid is allowed to
pass through the heat exchanger without interruption. The fan motor, in such cases, shuts on and off by an electrical thermostat. Airow through the heater
is thus controlled. A small amount of heat will radiate from the heat exchanger when the fan is inoperative but this is usually tolerable. Absolute control
of heat output from the heat exchanger would require that steam or ow of hot liquid to the heat exchanger be shut off. Such control of the heat transfer
medium is possible by thermostatic valve control, separately or in combination with thermostatic fan control. Typically a manual shut-off valve is placed in
the steam or liquid line for control purposes.
Note:
- Installation must comply with local electrical code.
- For internal wiring of control devices and starters, consult device manufacturer.
- The thermostat must have an electrical rating equal to or exceeding the HP, line voltage and current expected.
- For wiring of fan motor, refer to diagram on the motor name plate.
- Some motors may be equipped with external high-limit wires. These wires must be connected in series with the motor control circuit. (see appropriate
diagrams above)
WIRING DIAGRAM FOR BUILT-IN DISCONNECT SWITCH HEATERS
SINGLE PHASE Single Motor Unit
THREE PHASE

9
REPAIR AND REPLACEMENT PROCEDURES
The fan guard consists of a removable upper panel and a frame bolted to the heater cabinet. For most service
procedures it is necessary only to remove the upper removable panel. In cases where the complete fan guard is to be
removed, assistance will be required due to its size and weight. To remove the complete fan guard:
1. Disconnect the wiring from the motor.
2. Remove the bolts fastening the fan guard to the cabinet and slide the fan guard past the motor.
1. Remove the bottom cover which is attached with #10 screws and 1/4” bolts.
2. Take out the four 1/4” or 5/16” bolts on each side of the cabinet.
3. When removing the core assembly, it will usually be necessary to have assistance in order to handle it safely. In
some instances, dismounting the complete heater from support structure may be advisable to allow core assembly
removal at ground or bench level.
WARNING!
Disconnect heater from power supply before servicing or repairing heater. Lock the switch in the
“OFF” (open) position and/or tag the switch to prevent unexpected power application. This heater
should only be serviced by personnel with heating equipment experience. Some components of this
heater are heavy and assistance will be required to remove them.
CORES
1. Remove the #10 screws that attach the fan guard to the cabinet.
2. Remove the motor, fan and fan guard together by removing the four 5/16” carriage bolts and nuts that attach the
motor to the motor bracket.
3. Before removing the fan from the motor shaft, measure the distance between the fan hub and the motor end face.
Make a note of this dimension to permit installation of the fan in the correct position at reassembly. The fan guard
must rst be positioned over the motor shaft before the fan is installed on the shaft
REMOVAL OF FAN, FAN GUARD OR MOTOR
(All models except FR/HP 36)
FR/HP 36 FAN GUARD
1. Remove upper fan guard panel.
2. Slide motor mount up to relieve the tension to the v-belt and remove the v-belt.
3. Before installing a new v-belt, ensure that the sheaves are properly aligned. (See Drive Sheave Section)
4. Install the new v-belt and tension it by sliding the motor mount down until the v-belt will only move 10 to 16 mm
(3/8 to 5/8 in.) when 68N (15 lbs) of force are applied to the belt midway between the sheaves. Ensure that the
motor is level and then tighten the bolts fastening the motor mount to the drive frame.
5. Replace upper fan guard panel.
6. After a few days of operation the new v-belt will seat-in and may require adjustment.
V-BELT-SERVICE - REMOVAL, INSTALLATION AND TENSIONING

10
1. Remove bolts holding motor to the motor mount.
2. Remove the two piece fan guard assembly.
3. Lift the motor assembly off the motor mount.
4. Before removing the fan, measure and record the location of the fan hub on the motor shaft. If fan is difcult
to remove, use a gear puller on the fan hub.
5. To reassemble, position fan on motor shaft, and tighten set screws.
6. Place motor assembly onto motor mount, and fasten the fan guard to cabinet.
FAN MOTOR - REMOVAL AND INSTALLATION
1. The sheaves on the fan motor and fan drive may be removed by removing the cap screws from the
bushings.
2. Thread the cap screws into the threaded removal holes and progressively tighten the cap screws until the
sheave and bushing are loose and slide off the shaft.
3. To install; rst slide the sheave with the bushing and cap screws in place onto the shaft. Align the sheaves.
4. Tighten the cap screws alternately until a torque of 10.8Nm (8ft.-lbs) is achieved. DO NOT over torque,
damage may result.
DRIVE SHEAVES - REMOVAL AND INSTALLATION
1. Remove the complete fan guard assembly as described in the Fan Guard section.
2. Support the fan drives frame, then remove the bolts fastening it to the heater. Lower frame from the heater.
DRIVE FRAME - REMOVAL
The ball bearings used on the FR/HP-36 heaters are of the extended inner ring type, which use an eccentric
self-locking collar for a positive locking action of the shaft.
1. The fan shaft bearing may be serviced either on the heater by removing the upper fan guard panel or rst
removing the whole drive frame from the heater.
2. Remove the v-belt and the drive sheave as described in the appropriate section.
3. Measure and record the distance from the end of the shaft to the bearing housing.
4. Loosen the set screws in the locking collars. Unlock the collars by placing a drift punch in the collar hole and
hit the punch opposite to the direction of shaft rotation.
5. Loosen and remove the bolts fastening the bearing to the bearing support and slide bearings off the shaft.
NOTE: It may be necessary to le the burr left by the bearings set screws on the shaft, in order to remove
the inner bearing.
6. To install new bearings; slide the bearings and locking collars onto the shaft with the locking collars facing
each other. Bolt bearings onto the bearing support. Position shaft using the measurement taken in Step 3.
7. Assemble locking collars to the bearing, turning them in the direction of shaft rotation and use a drift punch
to tighten the collar in place. Then tighten the set screws in the locking collars.
8. Reassemble the unit, ensuring the sheaves are aligned and the v-belt is tensioned as described in the
appropriate sections.
FAN SHAFT BEARINGS - REMOVAL AND INSTALLATION
1. Remove the fan guard assembly as described in the Fan Guard Section.
2. Remove the drive frame as described in the Drive Frame Section.
3. Remove the set screws on the fan hub and remove the fan from the shaft. NOTE: if the shaft is corroded it
may be necessary to replace the shaft.
4. To reassemble, slide the shaft into the fan hub until the end of the hub. Ensure that the two ats on the shaft
align with the set screws in the fan hub. Then tighten the fan’s set screws.
FAN - REMOVAL AND INSTALLATION

11
PARTS LIST
FR/HP 12, 16, 20, 24 and 30 models
ITEM
NO.
PART
DESCRIPTION
FR, HP 12 FR, HP 16 FR, HP 20 FR, HP 24 FR, HP 30
QTY. NUMBER QTY NUMBER QTY NUMBER QTY NUMBER QTY NUMBER
1FR1 CORE ASSEMBLY 1 2053 1 2054 1 2055 1 2056 1 2057
1HP1 CORE ASSEMBLY 1 2051 1 1914 1 1986 1 2042 1 2043
1HP3 CORE ASSEMBLY 12065 11936 1 1875 1 2045 1 2047
1HP5 CORE ASSEMBLY - - 1 1983 1 1991 1 2046 1 2048
1HP7 CORE ASSEMBLY - - - - - - 1 2190 1 2188
2 MOTOR BRACKET 1 1512 1 1217 1 1237 1 1219 1 1280
3 LOUVER BLADE KIT 1 4881 1 4882 1 4883 1 4884 1 4958
4 BOTTOM PANEL 1 7874 1 7868 17861 17960 1 8391
5 TOP PANEL 1 7875 1 7870 1 7865 17961 1 8395
6RIGHT PANEL 1 7872 1 7866 17863 17964 1 8393
7 LEFT PANEL 1 7873 1 7867 17862 17963 1 8394
8 FAN SHROUD 1 7871 1 7869 17864 17962 1 8392
9 MOTOR 1 ** 1 ** 1 ** 1 ** 1 **
10 FAN BLADE 1 11284 1 1378 1 1382 1 1389 1 1386
11 FAN GUARD 2 5456 2 5457 2 5458 2 5459 2 5460
Note:
** Check motor name plate for voltage, phase, H.P., frame size and service classication.
SEE XS40 DISCONNECT
PARTS LIST

12
XS40
KIT, XS40 DISC SWTCH ASSM
ANGULAR
CHK'D BY:
APP'D. BY:
SCALE:
DRN BY:
±
DWG NO.:
TITLE:
SYTELINE NO.: METRIC
TOLERANCE UNLESS NOTED OTHERWISE
DECIMAL FRACTIONAL
REVISION DESCRIPTION
REV. BYDATE
1/2° 0.005" 1/16" 1 mm
SHEET:
XS40
lbrauer 19 Dec 2013
±±±
SCALE
EDMONTON, ALBERTA
1 OF 1
6
1
2
1
10
1
1
1
7
1
9
1
4
2
5
1
8
2
3
1
11
1
12
1
Item Number Part Number Description Quantity
1 B16229-03 Terminal Box, X-max Series 2 1
212147 Disconnect Switch Handle 1
312241-02 Operating Shaft 1
4 B12334-01 Terminal Box Cover 2
5 B12676-07 Trolley, Disconnect Switch 1
611362 Bracket, Din Rail 1
712112 Switch, Disconnect 1
8 B12676-07 Terminal Block Ass'y 2
9 XHP100 Dry Seal Plug 1" NPT 1
10 11650 Mounting Bracket 1
11 Contact Manufactuer Cable, Teck-90HL 1
12 Contact Manufacturer Fitting, Teck Cable 1
ITEM Part Number DESCRIPTION QUANTITY
1B16229-03 Terminal Box, X-max Series 2 1
2 12147 Disconnect Switch Handle 1
3 12241-02 Operating Shaft 1
4 B12334-01 Terminal Box Cover 2
5B12676-07 Trolley, Disconnect Switch 1
6 11362 Bracket, Din Rail 1
7 12112 Switch, Disconnect 1
8B12676-07 Terminal Block Ass’y 2
9 XHP100 Dry Seal Plug 1” NPT 1
10 11650 Mounting Bracket 1
11 Contact Manufacturer Cable, Teck-90HL 1
12 Contact Manufacturer Fitting, Teck Cable 1
XS40 Disconnect

13
1815
16
7
10 11 14 17
12
5
13
9
2
6
4
3
11
PARTS LIST
FR/HP 36 models
ITEM PART FR, HP36
NO. DESCRIPTION QTY NUMBER
1 FR1 CORE ASSEMBLY 1 2058
1 HP1 CORE ASSEMBLY 1 2044
1 HP3 CORE ASSEMBLY 1 2049
1 HP5 CORE ASSEMBLY 1 2050
1 HP7 CORE ASSEMBLY 1 2189
2 MOTOR BRACKET 1 3426
3 LOUVER BLADE KIT 1 4959
4 BOTTOM COVER 1 1233
5 MOTOR 1 --**--
6 U-CLIPS 2 3444
7 FAN BLADE 1 1395
ITEM PART FR, HP36
NO. DESCRIPTION QTY NUMBER
8 FAN GUARD FRAME 1 3443
9 TAPER BUSHING, DRIVE 1 -- * --
10 DRIVEN SHEAVE 1 1398
11 1” TAPER BUSHING, DRIVEN 1 1401
12 V-BELT 1 1402
13 DRIVE SHEAVE 1 1399
14 BEARING 1” PILLOW BLOCK 2 1396
15 FAN GUARD, UPPER PANEL 1 3455
16 FRAME, 36 FAN DRIVE 1 3424
17 SHAFT 1 1268
Note:
*Specify shaft diameter when ordering.
** Check motor name plate for voltage, phase, H.P., frame size and service classification.
PARTS LIST
FR/HP 36 models
ITEM
NO.
PART
DESCRIPTION
FR, HP 36
QTY. NUMBER
1FR1 CORE ASSEMBLY 1 2058
1HP1 CORE ASSEMBLY 1 2044
1HP3 CORE ASSEMBLY 1 2049
1HP5 CORE ASSEMBLY 1 2050
1HP7 CORE ASSEMBLY 1 2189
2 MOTOR BRACKET 1 3426
3 LOUVER BLADE KIT 1 4959
4 BOTTOM PANEL 1 1233
5 MOTOR 1 **
6U-CLIPS 2 3444
7 FAN BLADE 1 1395
Note:
*Specify shaft diameter when ordering.
** Check motor name plate for voltage, phase, H.P., frame size and service classication.
ITEM
NO.
PART
DESCRIPTION
FR, HP 36
QTY. NUMBER
8 FAN GUARD FRAME 1 3443
9 TAPER BUSING, DRIVE 1 *
10 DRIVEN SHEAVE 1 1398
11 1” TAPER BUSING, DRIVEN 1 1401
12 V-BELT 1 1402
13 DRIVE SHEAVE 1 1399
14 BEARING 1” PILLOW BLOCK 2 1396
15 FAN GUARD, UPPER PANEL 1 3455
16 FRAME, 36 FAN DRIVE 1 3424
17 SHAFT 1 1268

14
FRHP Heat-Exchanger Unit Heaters
Model Coding
Series Fan
Size
Cabinet
Material
Connections Motor
HP1 12
FAN SIZE MODEL & SIZE
HP1-12 THRU HP1-36 1 - Pass HP1
HP3-12 THRU HP3-36 3 - Pass HP3
HP5-16 THRU HP5-36 5 - Pass HP5
HP7-24 THRU HP7-36 7 - Pass HP7
FR1-12 THRU FRR1-36 1 - Pass FR1
FAN SIZE
12” DIA 12
16” DIA 16
20” DIA 20
24” DIA 24
30” DIA 30
36” DIA 36
CONNECTIONS
2” NPT FEMALE A
2” NPT MALE, SCH. 80 B
2” 300# RF FLANGE C
EXCHANGER COATINGS
HEAT RESISTANT ALUMINUM PAINT 1
HERESITE®PHENOLIC COATING 2
CABINET MATERIAL
EPOXY POWDER COATED CARBON STEEL A
HERESITE®PHENOLIC COATED CARBON
STEEL B
STAINLESS STEEL C
HEATER CERTIFICATION
1 General Purpose
2 X-proof, groups C, D, E, F, & G
3CSA Certied Heater
MOTOR ELECTRICAL
SPECIFICATIONS
VOLTS PHASE HERTZ
A115 160
B 208 1 60
C 208 3 60
D 230 1 60
E 230 3 60
F460 160
G460 360
H 575 3 60
I 220 1 50
J 380 3 50
K 440 3 50
NOTE:
Ruffneck™ utilizes Doerr/Emerson/Baldor as our standard motor.
Specifying any other O.E.M. motor may result in longer lead times. All heat
exchangers are registered to C.R.N. OH0224.2C.
They are approved for use in all provinces and territories in Canada.
Heresite®coated exchangers and cabinets: contact factory for quote.
Louvres and fan blades are also Heresite® coated.
Contact factory for shipping lead time.
Motor designed to be used at rated voltage with tolerances of ±15%.
Motor may be marked 230V, but is suitable for 208V operation.
 460 1 phase motors are only certied for groups D, F & G.
 Only available in 16” and larger units.
Only available in 24” and larger units.
 Built-in Disconnect only available with CSA certied heaters.






A 1 A 1 1 A


TUBE MATERIAL
WALL THICKNESS ROWS
FINNING
TUBING
FINS/
INCH MATERIAL TYPE
A.065”
(1.7 mm) 3 10 AL TW 5/8” (16 mm)
TW = Tension Wound
EX = Extruded AL = Aluminum
Exchanger
Coatings
Tube
Material
D
Built-in
Disconnect
Switch



15
NOTES

PLEASE ADHERE TO INSTRUCTIONS PUBLISHED IN THIS MANUAL.
Failure to do so may be dangerous and may void certain provisions of your warranty.
For further assistance, please call:
WARRANTY: Under normal use the Company
warrants to the purchaser that defects in material or
workmanship will be repaired or replaced
without charge for a period of 18 months from
date of shipment, or 12 months from the start date of
operation, whichever expires rst. Any claim for
warranty must be reported to the sales ofce where the
product was purchased for authorized repair or
replacement within the terms of this warranty.
Subject to State or Provincial law to the contrary, the
Company will not be responsible for any expense for
installation, removal from service, transportation, or
damages of any type whatsoever, including damages
arising from lack of use, business interruptions, or
incidental or consequential damages.
The Company cannot anticipate or control the
conditions of product usage and therefore
accepts no responsibility for the safe application and
suitability of its products when used alone or in
combination with other products. Tests for the safe
application and suitability of the products are the sole
responsibility of the user.
This warranty will be void if, in the judgment of the
Company, the damage, failure or defect is the result of:
• vibration, radiation, erosion, corrosion, process
contamination, abnormal process conditions,
temperature and pressures, unusual surges or
pulsation, fouling, ordinary wear and tear, lack of
maintenance, incorrectly applied utilities such as
voltage, air, gas, water, and others or any
combination of the aforementioned causes not
specically allowed for in the design conditions or
• any act or omission by the Purchaser, its agents,
servants or independent contractors which for
greater certainty, but not so as to limit the generality
of the foregoing, includes physical, chemical or
mechanical abuse, accident, improper
installation of the product, improper storage and
handling of the product, improper application or the
misalignment of parts.
No warranty applies to paint nishes except for
manufacturing defects apparent within 30 days from
the date of installation.
The Company neither assumes nor
authorizes any person to assume for it any other
obligation or liability in connection with the product(s).
The Purchaser agrees that all warranty work required
after the initial commissioning of the product will be
provided only if the Company has been paid by the
Purchaser in full accordance with the terms and
conditions of the contract.
The Purchaser agrees that the Company makes
no warranty or guarantee, express, implied or
statutory, (INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR WARRANTY OF FITNESS
FOR A PARTICULAR PURPOSE) written or oral, of
the Article or incidental labour, except as is expressed
or contained in the agreement herein.
LIABILITY: Technical data contained in the catalog or
on the website is subject to change without notice. The
Company reserves the right to make dimensional and
other design changes as required. The Purchaser
acknowledges the Company shall not be obligated
to modify those articles manufactured before the
formulation of the changes in design or improvements
of the products by the Company.
The Company shall not be liable to compensate or
indemnify the Purchaser, end user or any other party
against any actions, claims, liabilities, injury, loss, loss
of use, loss of business, damages, indirect or conse-
quential damages, demands, penalties, nes, expens-
es (including legal expenses), costs, obligations and
causes of action of any kind arising wholly or partly
from negligence or omission of the user or the mis-
use, incorrect application, unsafe application, incor-
rect storage and handling, incorrect installation, lack
of maintenance, improper maintenance or improper
operation of products furnished by the Company.
Edmonton
Head Ofce
1-800-661-8529
[phone]
F 780-468-5904
Oakville
1-800-410-3131
[phone]
F 905-829-4430
Orillia
1-877-325-3473
[phone]
F 705-325-2106
Houston
1-855-219-2101
[phone]
F 281-506-2316
Denver
[phone]
F 303-979-7350
5918 Roper Road, Edmonton, Alberta, Canada T6B 3E1
Phone: [phone] Fax: [phone]
24 Hr. Hotline: [phone]
(U.S.A. and Canada)
Please have model and serial numbers available before calling.