Granby 115 User manual

ECONOPLUS ELECTRIC
FURNACE
SERIES 100
Models 115, 118 & 119
SERIES 200
Models 215, 218 & 219
SERIES 300
Model 315, 318, 319 & 323
Rev : June 2009

Econo lus Series 100, 200 and 300 ELECTRIC FURNACES
INSTALLATION INSTRUCTIONS – HOMEOWNER’S MANUAL
1.0 Scope and general instructions
1.1 Installer and service technician
Use this installation guide for the initial set-up of the furnace and for subsequent service and maintenance. Keep
this document near the unit for eas reference.
1.2 Homeowner
This guide details the different modes of operation of our unit. Please read this guide after the initial
installation b our installer and keep it hand afterward for future reference.
1.3 Models covered and description
•Series 100
The 100 series is the basic electric furnace. These furnaces are factor assembled for operation with a single
stage or standard thermostat. The also have a cooling rela factor installed to enable high speed operation
when coupled with an air conditioning unit at 0.5’’W.C. (Suffix C).
Mo
del
Econoplus
K
W
Total
Amps
Volts
(V/Hz/Ph)
Motor
(HP)
Motor
Speed
Static
Pressure (‘’W.C.)
CFM
Δ
T
(
o
F)
115
15
64.4
240
/60/1
¼
-
240
Med.
0.2
9
25
51
115
-
C
15
64.8
240
/60/1
¼
-
240
High
0.5
1
0
50
45
118
18
76.9
240/60/1
¼
-
240
Med.
0.2
925
59
118
-
C
18
7
7.3
240/60/1
¼
-
240
High
0.5
1050
52
119
19
78.4
240
/60/1
¼
-
240
Med.
0.2
9
25
63
119
-
C
19
78.8
240
/60/1
¼
-
240
High
0.5
1
0
50
65
Table 1 – Series 100 characteristics
•Series 200
The 200 series is the same basic electric furnace with more functional options. These furnaces are factor
assembled for operation with a 1, 2 or 3 stages thermostat. When used with a multi-stage thermostat the
unit will modulate its power depending on the stage calling for heat. The furnace is factor assembled with a
three positions switch to manuall choose the level of heat if installed with a one stage thermostat. The
intermediate modes of heating are detailed in tables 2 and 3 and explained later in this guide. The Series 200
also comes with a low speed fan switch that enables operation of the lowest speed of the motor for
continuous ventilation when needed. The Series 200 also has a cooling rela to permit high speed operation
when matched with an air conditioning unit. Suffix C indicates operation at 0.5” W.C. at high speed.
•Series 300
Series 300 has the same functionalit of series 200 while being equipped with a 120V motor-blower
combination. This series also comes with, as standard equipment, a 120V terminal strip enabling connection

of additional equipment such as electronic air filter and/or humidifier. Finall , this series has insulating wool
in the blower compartment. As in series 100 and 200, suffix C indicates operation at 0.5’’ W.C. at high speed.
Series 300 features an extended capacit with the addition of a 23 KWatt model. Please note that the 23
KWatt model is ONLY offered on Series 300. Finall , Series 300 is also offered with a 1/2HP ECM motor as
optional equipment. This motor is a high efficienc (up to 80%) motor that is full compatible with the
standard control scheme of the furnace. ECM models are identified with the ECM suffix.
Model
Econoplus
KW
Total
Amps
Volts
(V/Hz/Ph)
Motor
(HP)
Motor
Speed
Static
Pressure (“ W.C.)
CFM
Δ
T
(
o
F)
215
@
5
KW
5
22.6
240
/60/1
¼
-
240
Lo
0.2
7
5
0
21
215
@
10
KW
10
43.5
240
/60/1
¼
-
240
Lo
0.2
750
42
215
15
64.4
240
/60/1
¼
-
240
Med.
0.2
9
25
51
2
15
-
C
15
64.8
240
/60/1
¼
-
240
High
0.5
1
0
50
45
218 @ 9KW
9
39.3
240/60/1
¼
-
240
Lo
0.2
750
38
218
@ 13KW
13
56
240/60/1
¼
-
240
Med.
0.2
925
44
218
18
76.9
240/60/1
¼
-
240
Med.
0.2
925
59
218
-
C
18
77.3
240/60/1
¼
-
240
High
0.5
1050
52
219
@
9
KW
9
39.3
240
/60/1
¼
-
240
Lo
0.2
7
5
0
3
8
219
@
14
KW
14
60.1
240
/60/1
¼
-
240
Med.
0.2
9
25
48
219
19
78.
4
240
/60/1
¼
-
240
Med.
0.2
9
25
63
219
-
C
19
78.8
240
/60/1
¼
-
240
High
0.5
1
0
50
55
Table 2 – Series 200 characteristics
Model
Econoplus
KW
Total
Amps
Volts
(V/Hz/Ph)
Motor
(HP)
Motor
Speed
Static
Pressure (“ W.C.)
CFM
Δ
T
(
o
F)
3
15
@
5
KW
5
25.8
240
/60/1
1/3
-
120
Lo
0.2
750
21
3
15
@
10
KW
10
46.7
240
/60/1
1/3
-
120
Lo
0.2
750
42
3
15
15
67.6
240
/60/1
1/3
-
120
Med.
0.2
1020
47
3
15
-
C
15
68.6
240
/60/1
1/3
-
120
High
0.5
1150
41
3
18 @ 9KW
9
42.5
240/60/1
1/3
-
120
Lo
0.2
750
38
3
18 @ 13KW
13
59.2
240/60/1
1/3
-
120
Med.
0.2
1020
41
3
18
18
77.5
240/60/1
1/3
-
120
Med.
0.2
1020
54
3
18
-
C
18
78.5
240/60/1
1/3
-
120
High
0.5
1150
48
3
19
@
9
KW
9
42.5
240
/60/1
1/3
-
120
Lo
0.2
750
38
3
19
@
14
KW
14
63.3
240
/60/1
1/3
-
120
Med
.
0.2
1020
43
3
19
19
82.1
240
/60/1
1/3
-
120
Med.
0.2
1020
58
3
19
-
C
19
83.1
240
/60/1
1/3
-
120
High
0.5
1150
51
323 @ 10KW
10
46.7
240/60/1
1/3
-
120
Lo
0.2
750
42
323 @ 18KW
18
77.5
240/60/1
1/3
-
120
Med.
0.2
1020
54
323
23
99.0
240/60/1
1/3
-
120
M
ed.
0.2
1020
70
323
-
C
23
100.0
240/60/1
1/3
-
120
High
0.5
1150
62
323ECM @ 10KW
10
46.7
240/60/1
½
-
120 E
Lo
0.2
650
49
323ECM @ 18KW
18
77.5
240/60/1
½
-
120 E
Med.
0.2
1230
47
323ECM
23
96.2
240/60/1
½
-
120 E
Med.
0.2
1230
58
323ECM
-
C
23
96.9
240
/60/1
½
-
120 E
High
0.5
1280
56
Table 3 – Series 300 characteristics

2.0 Important safety information
•WARNING – BA IC AFETY WARNING
The initial electrical connection and subsequent service MUST be done b a qualified electrician in
accordance with this manual AN ELECTRICAL CO ES HAVING JURIS ICTION IN YOUR AREA.
This unit is intended and approved for use with heating ducts. Use without ducts will result in untested
operation that could result in propert damage, accident or DEATH.
Disconnect power to the unit before doing an service on the unit. The t pe of voltage and current used in
this furnace are enough to cause serious injur and/or DEATH.
This furnace is not approved or intended for use outside. Use outside voids the warrant .
Do not store gasoline, fuel or an flammable substances near the furnace.
Ask the installer to show ou the location of the main disconnect breaker of the furnace.
WARNING – BE T PRACTICE FOR OPTIMAL OPERATION
Make sure that the air filter is alwa s clean and in good working condition and not overl obstructed. An
obstructed air filter will result in reduced air flow and higher outlet temperature. Continued operation WITH
THE FILTER CLOGGED will drasticall reduce the life of the heating elements.
The unit must be inspected once a ear b a qualified technician.
Make sure that ou have enough clearance in the front and the rear of the unit for service and maintenance.
Although the unit is approved for zero clearance on these panels, it is definitel NOT a good practice to do it.
3.0 Installation of the furnace
The return air/ inlet connection is made on the rear of the unit and the suppl plenum is connected in the front of the
unit. The flanges supplied with the cabinet are 19” X 19” and can accommodate plenums of that size. The cabinet is also
large enough so 20” X 20” suppl plenums could be attached directl on the furnace. See Figure 1 for details. The unit is
approved for installation with zero clearance on all parts of the cabinet including the floor (combustible floor) and also
with zero clearance on the walls of the suppl plenum. The unit can be installed directl on the floor, on the adjustable
legs (included) or suspended to the ceiling with “plumber” straps. Please see figure 2A, 2B and 2C for the different
installation configurations. Make sure to leave sufficient clearance in the front of the unit for the electrical connections
and electrical service and in the rear of the unit for blower and motor maintenance and service. Please note that the air
filter rack can be installed on the right or left side of the unit in addition to the rear (factor position). To change the
filter rack position, refer to fig. 3.
Suppl Air Plenum
Return Air Plenum
Front of furnace
Floor (Combustible floor approved)
Figure 1
Figure 2A

Also note that the blower in the rear compartment can be removed b loosening the 4 wing nuts (figure 3) that hold it to
the blower supports. The wire is long enough so ou can remove the blower from the unit without disconnecting it.
CAUTION: when removing the blower, DO NOT remove the blower legs. Loosen the 4 wing nuts and slide the blower
out. To replace the blower, position the studs in the slots on the blower legs and full insert the blower. Be sure to
RETIGHTEN the wings nuts after reinstalling the blower. Consult figure 4 for details.
4.0 Electrical connection to the furnace
4.1 240VAC – High voltage
You onl need to bring a 2 conductors wire + ground to the furnace for the series 100 and 200 and a 3
conductors wire + ground for the series 300. The onl electrical “installation” to the furnace is this connection.
All other wiring is factor installed/connected. Consult the local electrical codes for the size of the conductors
needed between the distribution panel and the furnace and
the grounding of the unit. The use of copper wires is
recommended. If aluminum wire is used, make sure to
respect all applicable codes.
Also note that it is possible to change the orientation of the
main terminal block in the furnace to accommodate a
suppl wire coming from the left or right. The factor
installed position is on the right side. Knock-outs are
provided on the left and right side panels. If ou choose to
reorient the main suppl block, ou will have to disconnect
and reconnect the internal wires to the block. To do this,
Wing Nuts
Installed with the
mounting legs supplied
as standard equipment.
See the mounting
procedure at the end of
this manual
Alternate filter rack position
Factor designed
240V connection
connection
Alternate 240V
Wiring connection
Rotate the connection
Block for alternate
wiring direction
Figure 2B
Figure 2C
Figure 3
Figure 4
Figure 5 ( model 115 shown)
Rotation of
Suppl block

consult the electrical diagrams in the following pages. THIS CAN ONLY BE ONE BY A QUALIFIE TECHNICIAN
AN /OR ELECTRICIAN. Fig.5 above shows the different possible configurations.
4.2 24VAC – Low voltage (Thermostat and controls)
All 24VAC connections are done on the left portion of the upper front panel on the 8 positions magnum st le
terminal (recessed and accessible b removing the 2 screws on the small access panel). The terminolog used is
the standard HVAC terminolog . Please refer to figure 6.
Please note that Rc and Rh (together) and W1, W2 and W3
(together) are jumped at the factor . The unit is factor wired for a
1 stage thermostat. No low voltage connections are needed INSIDE
the electrical panel. Make sure to adjust the thermostat heat
anticipator to its maximum value or ‘’LONGER’’ as often referred.
Please note that the following controls schemes are possible with
the ECONOPLUS furnace:
•Fig. 7A: Heating onl with a standard 1 stage thermostat;
•Fig. 7B: Heating onl with a one stage thermostat AND an outside sensor;
•Fig. 7C: Heating onl with a 2 stages thermostat AND an outside sensor;
•Fig. 7D: Heating onl with a one stage thermostat AND two outside sensors;
•Fig. 7E: Heating and cooling with a standard heating-cooling thermostat;
•Fig. 7F: Heating and cooling with a heating-cooling thermostat AND one outside sensor;
•Fig. 7G: Heating and cooling with a heating-cooling thermostat AND 2 outside sensors.
Control schemes illustrated on Figures 7C, 7 and 7G are exclusive to the ECONOPLUS furnaces.
4.3 Electrical diagrams
The electrical diagrams are available on the following figures:
•Econoplus 115: Figure 8 - Econoplus 118 and 119: Figure 9
•Econoplus 215: Figure 10 - Econoplus 218 and 219: Figure 11
•Econoplus 315: Figure 12 - Econoplus 318 and 319: Figure 13 - Econoplus 323: Figure 14
4.4 120V terminal strip ( eries 300 only)
All series 300 units are equipped, as standard equipment, with a
120V terminal strip as shown on figure 15. Pins 1 and 2 are live
120V connectors and pins 3 and 4 are neutral connectors. The
maximum ampacit of accessories on this terminal strip is 2A.
W 1 W 2 W 3 R h R c G Y
C
Low Speed Switch
3 Pos. Power Switch
Thermostat LED
Thermostat connections
Figure 6
Figure 15
120V strip

5.0 Operation modes
5.1 eries 100 (models 115, 118 and 119)
On a Series 100 furnace, the operation is as follows:
Heating mode (model 115 as example):
When the thermostat is not calling for heat:
•The elements are not energized and the blower is OFF.
When the thermostat is calling for heat:
•After a dela , the blower will start at the medium speed.
•After a second dela , the first 5KW element will energize.
•After a third dela , the second and third 5KW elements will energize.
When the demand is satisfied:
•The sequence above is reversed until all elements and the blower are OFF.
Cooling mode (model 115 as example):
When the cooling thermostat is not calling for cooling:
•The elements are not energized and the blower is OFF.
When the cooling thermostat is in demand (circuit closed between Rc and G):
•The blower will start on the highest speed.
When the demand is satisfied:
•The blower will stop.
5.2 eries 200 and 300 (models 215, 218, 219, 315, 318, 319 and 323)
On a Series 200 or 300 furnace, the operation depends on the position of the switches on the top front panel.
Please refer to figure 6 shown earlier for a schematic of the switches on the front panel. The LED is lighted onl
when there is a demand for heat (the circuit is closed between Rh and W1 or W2 or W3).
Heating mode (model 215 as example)
Low speed switch at AUTO and power switch at 5KW (lowest position):
When the thermostat is not calling for heat:
•The elements are not energized and the blower is OFF.
When the thermostat is calling for heat:
•After a dela , the blower will start on low speed.
•After a second dela , the first 5KW element will energize.
When the demand is satisfied:
•The sequence above is reversed until all elements and the blower are OFF.
Low speed switch at ON and power switch at 5KW:
When the thermostat is not calling for heat:
•The elements are not energized and the blower is on low speed.
When the thermostat is calling for heat:
•After a first dela , the first 5KW element will energize.
When the demand is satisfied:
•The sequence above is reversed until all elements are OFF. The blower keeps running on low speed.
Low speed switch at AUTO and power switch at 10KW ( highest position):
When the thermostat is not calling for heat:
•The elements are not energized and the blower is OFF.

When the thermostat is calling for heat:
•After a dela , the blower will start on low speed.
•After a second dela , the first 5KW element will energize.
•After a third dela , the second 5KW element will energize.
When the demand is satisfied:
•The sequence above is reversed until all elements and the blower are OFF.
Low speed switch at ON and power switch at 10KW:
When the thermostat is not calling for heat:
•The elements are not energized and the blower is on low speed.
When the thermostat is calling for heat:
•After a first dela , the first 5KW element will energize.
•After a second dela , the second 5KW element will energize.
When the demand is satisfied:
•The sequence above is reversed until all elements are OFF. The blower keeps running on low speed.
Low speed switch at AUTO and power switch at 15KW ( center position):
When the thermostat is not calling for heat:
•The elements are not energized and the blower is OFF.
When the thermostat is calling for heat:
•After a dela , the blower will start at the low speed.
•After a second dela , the first 5KW element will energize.
•After a third dela , the second 5KW element will energize.
•After a fourth dela , the third 5KW element will energize AND the blower will switch to medium speed.
When the demand is satisfied:
•The sequence above is reversed until all elements and the blower are OFF.
Low speed switch at ON and power switch at 15KW:
When the thermostat is not calling for heat:
•The elements are not energized and the blower is on low speed.
When the thermostat is calling for heat:
•After a first dela , the first 5KW element will energize.
•After a second dela , the second 5KW element will energize.
•After a third dela , the third 5KW element will energize AND the blower will switch on medium speed.
When the demand is satisfied:
•The sequence above is reversed until all elements are OFF. The blower keeps running on low speed.
Cooling mode (model 215 as example):
Low speed switch at AUTO
When the cooling thermostat is not calling for cooling:
•The elements are not energized and the blower is OFF.
When the cooling thermostat is in demand (circuit is closed between Rc and G):
•The blower will start on the highest speed.
When the cooling demand is satisfied:
•The blower will stop.
Low speed switch at ON
When the cooling thermostat is not calling for cooling:
•The elements are not energized and the blower is on low speed.

When the cooling thermostat is in demand:
•The blower will start at the highest speed.
When the cooling demand is satisfied:
The blower will keep running on low speed.
NOTES:
The power switch has no effect on cooling mode when there is a cooling demand from the thermostat.
If a two stage thermostat is used, remove the jumpers between W1 & W2. If a three stage thermostat is
used remove the jumpers between W1 & W2 and between W2 & W3. In this mode the thermostat will
automaticall control the sequence between the different elements and the motor speeds. In such a case, it
is imperative that the power switch be at its maximum position (center position), i.e. 15KW for model 215,
18KW for model 218 and 19KW for model 219.
In the above examples, the operation is similar for models 218, 219, 318 and 319. The three settings are,
respectivel , 9KW with low speed, 13KW with medium speed and 18KW with medium speed for model 218
and 319 and 9KW with low speed, 14KW with medium speed and 19KW with medium speed for model 219
and 319, 10 KW with low speed, 18 KW with medium speed and 23 KW with medium speed for model 323.
REMEMBER TO VERIFY THE POWER SWITCH POSITION WHEN TROUBLESHOOTING PROBLEMS THAT RELATE
TO THE FURNACE NOT SUPPLYING ENOUGH HEAT OR WHEN MEASURING A CURRENT LOWER THAN
EXPECTED.
6.0 Air flow verification
After the installation, it is CRITICAL that proper air flow be verified. This is done b taking the difference of temperatures
(delta T) between the inlet plenum and the suppl (warm air) plenum. Take 4 or 5 measurements in the duct and
calculate the average for the warm air duct. This temperature differential must be in accordance with the table in
section 1.3. If the temperature difference is much higher than table 1, 2 or 3 of section 1.3 for the specified power
setting, it is an indication that restriction in the heating s stem is much larger than normal. This might be caused b an
obstruction or a clogged air filter. It is also possible that our house has an abnormall high pressure restriction. In that
case it is possible to use the high speed of the blower. To do this, internal connections to the motor must be transferred
from the medium speed tap to the high speed tap on the motor. Refer to the electrical diagram. It is strongly
recommended that this modification be done by a qualified technician or electrician. Note the Delta T’s in the table
below. This information will be ver valuable when doing annual maintenance. Please note that the factor settings for
the blower are:
•Series 100
o15KW, 18KW and 19KW without cooling coil (0.20” W.C.): medium speed.
o15KW, 18KW and 19KW with cooling coil (0.50” W.C.): high speed.
•Series 200 and 300
o5 KW and 10KW power setting on Econoplus-215 and 315: low speed.
o9 KW power setting on Econoplus-218, 219, 318 and 319: low speed.
o13 KW power setting on Econoplus-218 and 318: medium speed.
o14 KW power setting on Econoplus-219 and 319: medium speed.
o15 KW power setting on Econoplus-215 and 315: medium speed.
o18 KW power setting on Econoplus-218, 318 and 323: medium speed.
o19 KW power setting on Econoplus-219 and 319: medium speed.
o23 KW power setting on Econoplus-223: medium speed.
oAll models with cooling coil (0.5” W.C.): high speed.

Model
Power setting
Blower speed
elta T
7.0 Annual maintenance
This electric furnace requires ver little maintenance. Nonetheless the following points should be checked annuall :
REPLACE the air filter. The model used is a standard 20” X 20” X 1” thick paper air filter found at an hardware
store.
Verif the operation of the unit b having the thermostat call for heat. Re-verif the temperature differential
(Delta T) between the inlet and outlet plenums. A difference from the initial installation results can be a clue to
obstruction problems in the duct s stem if the delta T is higher but could also be a clue that one or more heating
elements are fault if the delta T is lower.
The blower motor DOES NOT require lubrication.
8.0 Contact information
For information on the furnace, technical questions, sales and replacement parts information, please visit
www.granb tanks.com.