MODINE PTX150AS0111 PTX Unit Heater User Manual

GAS-FIRED SEPARATED
COMBUSTION UNIT HEATERS AND
DUAL RATED VENTING UNIT HEATERS

PTX150AS0111 PTX Unit Heater

Modine’s separated combustion unit heaters are designed for the heating requirements of commercial and industrial buildings with select models available for residential garage heating as well. The separated combustion units draw combustion air from outside to ensure that the unit will always have plenty of fresh, clean air for combustion, reducing common concerns about dusty, dirty, humid, or negative space pressure applications. In addition, by drawing the combustion air from the outside, the overall heating efficiency is increased.

With 13 propeller and 11 blower model sizes available, the units cover a wide variety of applications with input ranges from 30,000 to 400,000 Btu/Hr in either natural or propane gas. This catalog describes the design benefits, construction features, performance data, unit selection procedure, and the optional and accessory devices available.

WARNING
Do not locate ANY gas-fired unit in areas where chlorinated, halogenated or acid vapors are present in the atmosphere.

WARNING
Appliances must not be installed where they may be exposed to a potentially explosive or flammable atmosphere.
As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice.

The Modine Breeze® AccuSpec is the fastest way to generate performance data based on actual job conditions. The Breeze® AccuSpec program is a web-based sizing and selection program. The program provides a series of step-by-step questions that allow for the easy configuration of Modine products. After a model has been configured, the program can generate Submittal Schedules, Submittal Data (including performance and dimensional drawings), and Specifications.

DESIGN FEATURES – ALL MODELS

Separated Combustion Unit Heaters, 30-125MBH
For residential, commercial or industrial applications that require a low profile unit, Modine offers the Hot Dawg®. Capable of being installed just one inch below the ceiling, the superior quality of the Hot Dawg makes it a preferred choice for a variety of applications, including garages and workshops.

Dual Rated Unit Heaters, 150-400MBH
For commercial or industrial applications that require higher input ratings, the PTX/BTX is available in ratings that range from 150,000 to 400,000 Btu/Hr in either natural or propane gas. Capable of being installed as separated combustion or power vented.

Table 3.1 – Standard Features and Factory Options ①

| Feature| Model
---|---|---
HDS| HDC| PTX| BTX
Cabinet and Air Mover| Aluminized steel cabinet (gauge indicated)| 22 ga.| 22 ga.| 20 ga.| 20 ga.
Low profile casing design| •| •| |
Baked-on polyester powder paint for durability and corrosion resistence| •| •| •| •
Adjustable air-deflector blades| •| •| •| •
Fans engineered for quiet operation| •| •| •| •
Totally enclosed fan/blower motors for maximum durability (model sizes 100 and above)| •| | •| •
Fingerproof fan guard (optional on PTX units)| •| •| •|
Two L-shaped mounting brackets (optional on sizes 100/125)| •| •| |
Multi-tap 3-speed motors, certified to 0.8” W.C. external static pressure| | •| |
Adjustable motor sheaves, certified to 0.7” W.C. external static pressure| | | | •
Heat Exchanger and Burner| Efficiency| 82-83%| 82%| 82-83%| 82%
Aluminized steel heat exchanger (409 stainless steel optional)| •| •| •| •
Tubular heat exchanger for superior durability| •| •| •| •
In-shot burner on each heat exchanger tube for reliable performance, ease of serviceability and low sound level on flame ignition/extinction| •| •| •| •
Controls| ETL certification for commericial and industrial use in the US and Canada| •| •| •| •
ETL certification for residential use in the US and Canada| •| •| |
Factory-installed power exhauster| •| •| •| •
Contractor Convenience Box with Terminal Board, Unit On/Off Swtich, and Indicator Light| | | •| •
Single stage gas controls (two stage optional)| •| •| •| •
High limit safety control| •| •| •| •
Differential pressure switch for proof of venting| •| •| •| •
Flame roll-out safety switch| •| •| |
Direct spark ignition with continuous retry control system| •| •| •| •
Control terminal board and low voltage terminal connections| •| •| •| •
Gas control step down transformer with 24V gas controls| •| •| •| •
Fan delay timer| •| •| •| •
Factory installed on/off toggle switch| •| •| •| •

Figure 4.1 – Factory Mounted Standard and Optional Features

1. Power Exhauster (STD)
   All units are supplied with a round vent pipe and combustion air inlet pipe connections.

2. Pressure Switch (STD)
   An automatic reset vent pressure switch is supplied on all units and is designed to prevent operation of the main burner in the event there is restricted venting of flue products. This restriction may occur due to an improper vent diameter, long vent runs, un-approved vent terminal, high winds, high negative pressure within space, etc. After the cause of the restriction has been corrected, the pressure switch will reset automatically.

3. Integrated Direct Spark Control Board (STD)
   The integrated direct spark ignition control combines all furnace control functions. The integrated board provides digital control of the air mover, inducer, ignition, gas valve and flame sense as well as monitoring the safety circuit at all times. The board includes LED diagnostics for trouble shooting and a fused power supply.

4. Gas Valve – (See Table 12.2)
   a) Single Stage Gas Valve – (STD)
   The main gas valve is factory installed on the unit heater gas train. The main gas valve provides regulator, main gas, and manual shutoff functions. The valve is redundant and provides 100% shut off.
   b) Two Stage Gas Valve – (OPT)
   The two-stage gas valve is factory installed on the unit heater gas train. The two stage gas valve provides the regulator, main gas (100% and 50% fire), and manual shutoff functions. The valve is redundant and provides 100% shut off.

5. Control Step Down Transformer – (STD)
   The control step down transformer is located in the electrical junction box. The transformer is used to step down from 115V to 24V for the gas controls, fan delay relay, field supplied motor starter, etc. An additional field installed transformer is required if the supply voltage is 208V, 230V, 460V, or 575V. To determine the control transformer supplied as well as any accessory/field supplied transformers required, refer to Table 12 .1

6. Flame Sensor (hidden) – (STD)
   Remote flame sensor verifies ignition of all burners, monitors the flame signal and communicates with the integrated circuit board.

7. Flame Roll Out Switch (HDS/HDC models – STD)
   Flame roll out switches are mounted near the burners and will shut off the gas supply in the event of an unsafe flame roll out condition.

8. High Limit Switch (hidden) – (STD)
   The limit control is mounted in the air stream and will shut off the gas supply in the event of overheating.

9. Direct Spark Igniter (hidden) – (STD)
   Provides spark for direct ignition of the burners.

10. Gas Pipe Connection – (STD)
    Easy access to factory installed gas pipe connection stubbed to outside of unit casing.

11. Contractor Convenience Package (PTX/BTX models STD)
    External junction box features simple connection of supply power wiring internally, thermostat wiring to terminals externally, an On/Off switch, and multi-color status indicator light to display the operational state of the unit.
    Figure 5.1 – Factory Mounted Standard and Optional Features

12. Finger Proof Fan Guard (STD thru 125, OPT 150-400)
    Propeller units may be equipped with an optional finger proof fan guard for added protection. The finger proof fan guard is installed at the factory in place of the standard fan guard.

13. Horizontal Air Deflector Blades (STD)
    Factory mounted on the discharge of the unit, the blades can be adjusted to provide horizontal (up and down) delivery control of the heated air . Vertical deflector blades are available as a field installed accessory.

14. Blower Motor – (STD for HDC/BTX Models)
    The blower motor is factory installed on the blower housing. Blower motors smaller than 3 HP are factory installed on the blower housing. Motors 3 HP and above are shipped loose for field installation to prevent damage during shipment.
    For blower models 60-125, the blower is direct driven by a 3-speed motor. For blower models 150-400, the blower motor is supplied with an adjustable sheave that can be used to increase/decrease the blower RPM, and the blower motor can be provided in a variety of supply voltages and motor horsepowers.

15. Blower Enclosure (OPT for HDC/BTX Models)

16. Filter Rack (OPT for HDC/BTX Models)
    Provides filtration of air to be heated . Must include Blower Enclosure accessory.

GENERAL PERFORMANCE DATA – MODELS HDS & PTX

Table 6.1 – Propeller Unit Model HDS and PTX General Performance Data

| Model HDS Sizes| Model PTX Sizes
---|---|---
30| 45| 60| 75| 100| 125| 150| 175| 200| 250| 300| 350| 400
Btu/Hr Input ①| 30,000| 45,000| 60,000| 75,000| 100,000| 125,000| 150,000| 175,000| 200,000| 250,000| 300,000| 350,000| 400,000
Btu/Hr Ouput ①| 24,900| 36,900| 49,200| 61,500| 82,000| 102,500| 123,000| 143,500| 164,000| 205,000| 246,000| 287,000| 332,000
Entering Airflow (CFM) @ 70°F| 505| 720| 990| 1160| 1490| 1980| 2140| 2725| 2870| 3995| 4545| 5280| 5995
Outlet Velocity (FPM)| 523| 725| 653| 769| 565| 747| 711| 607| 643| 721| 824| 748| 851
Air Temp. Rise (°F)| 44| 46| 45| 48| 50| 47| 53| 48| 52| 47| 50| 50| 51
Max. Mounting Height (Ft.) ②| 10| 10| 12| 14| 12| 16| 15| 14| 15| 18| 19| 18| 21
Heat Throw (Ft.) @ Max Mtg Ht ②| 25| 27| 36| 38| 42| 56| 51| 50| 53| 62| 69| 65| 74
Motor Type ③| SP| SP| PSC| PSC| PSC| PSC| PSC| PSC| PSC| PSC| PSC| PSC| PSC
Motor HP| 1/15| 1/15| 1/12| 1/12| 1/6| 1/8| 1/6| 1/6| 1/3| 1/3| 1/2| 1/2| 3/4
Motor RPM| 1550| 1550| 1625| 1625| 1050| 1625| 1075| 1075| 1075| 1075| 1075| 1125| 1125

1. Ratings shown are for elevations up to 2,000 ft. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level. (In Canada see rating plate .) Reduction of ratings requires use of a high altitude kit.
2. Data taken at 55°F air temperature rise. At 65°F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods.
3. All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor manufacturer and Modine . Motors on model sizes 100 and above are totally enclosed (Model size 75 and below are open drip proof) and all single phase motors have built in thermal overload protection.
   Table 6.2 – Propeller Unit Model HDS and PTX Operating Electrical Data ④
   Supply Voltage| Power Code| | Model HDS Sizes| Model PTX Sizes
   ---|---|---|---|---
   30| 45| 60| 75| 100| 125| 150| 175| 200| 250| 300| 350| 400
   115V 1 Phase| 01 (115V)| Motor Amps| 2.40| 2.40| 1.95| 1.95| 2.50| 2.20| 2.50| 2.50| 4.60| 4.60| 7.00| 7.00| 8.80
   Total Amps| 3.75| 3.75| 3.3| 3.3| 5.05| 4.75| 5.05| 5.05| 7.15| 7.15| 8.11| 8.65| 10.45
   Transformer kVA| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a| n/a
   208V 1 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.50
   208V Total Amps| 2.05| 2.05| 1.80| 1.80| 2.79| 2.63| 2.79| 2.79| 4.20| 3.95| 4.48| 4.78| 5.78
   230V 1 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 0.75| 0.75| 0.75| 0.75| 1.00| 1.00| 1.00| 1.00| 1.50
   230V Total Amps| 1.85| 1.85| 1.63| 1.63| 2.53| 2.38| 2.53| 2.53| 3.80| 3.58| 4.06| 4.33| 5.23
   208V 3 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.00| 1.50
   208V Total Amps| 2.05| 2.05| 1.80| 1.80| 2.79| 2.63| 2.79| 2.79| 4.20| 3.95| 4.48| 4.78| 5.78
   230V 3 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 0.75| 0.75| 0.75| 0.75| 1.00| 1.00| 1.00| 1.00| 1.50
   230V Total Amps| 1.85| 1.85| 1.63| 1.63| 2.53| 2.38| 2.53| 2.53| 3.80| 3.58| 4.06| 4.33| 5.23
   460V 3 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 0.75| 0.75| 0.75| 0.75| 1.00| 1.00| 1.00| 1.00| 1.50
   460V Total Amps| 0.93| 0.93| 0.81| 0.81| 1.26| 1.19| 1.26| 1.26| 1.90| 1.79| 2.03| 2.16| 2.61
   575V 3 Phase| 01 (115V) with Transformer| Transformer kVA| 0.50| 0.50| 0.50| 0.50| 0.75| 0.75| 0.75| 0.75| 1.00| 1.00| 1.50| 1.50| 1.50
   575V Total Amps| 0.74| 0.74| 0.65| 0.65| 1.01| 0.95| 1.01| 1.01| 1.52| 1.43| 1.62| 1.73| 2.09
4. Amp draw data shown is operating amp draw at incoming power . For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw . For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code .
   

GENERAL PERFORMANCE DATA – MODELS HDC & BTX

Table 7.1 – Blower Unit Model HDC and BTX General Performance Data

| Model HDC Sizes| Model BTX Sizes
---|---|---
60| 75| 100| 125| 150| 175| 200| 250| 300| 350| 400
Btu/Hr Input ①| 60,000| 75,000| 100,000| 125,000| 150,000| 175,000| 200,000| 250,000| 300,000| 350,000| 400,000
Btu/Hr Ouput ①| 49,200| 61,500| 82,000| 102,500| 123,000| 143,500| 164,000| 205,000| 246,000| 287,000| 328,000
Entering Airflow Range (CFM)| 635- 1111| 794- 1389| 1140- 2116| 1235- 2058| 1587- 2778| 1852- 3241| 2116- 3704| 2646- 4630| 3175- 5556| 3704- 6481| 4233- 7407
Outlet Velocity (FPM)| 437-726| 546- 908| 443- 781| 488- 773| 543- 903| 428-711| 489-813| 497-826| 596-991| 543-903| 621-1032
Air Temp. Rise (°F)| 40-70| 40-70| 35-65| 45-75| 40-70| 40-70| 40-70| 40-70| 40-70| 40-70| 40-70
Max. Mounting Height (Ft.) ②| 7-13| 7-16| 8-19| 8-17| 9-21| 8-18| 9-21| 10-22| 11-26| 11-26| 13-29
Heat Throw (Ft.) @ Max Mtg Ht ②| 20-45| 24-57| 27-68| 27-59| 33-75| 28-65| 32-74| 34-78| 40-94| 39-90| 44-102
Motor Type ③| P.S.C.| P.S.C.| P.S.C.| P.S.C.| T.E| T.E| T.E| T.E| T.E| T.E| T.E
Motor HP| 1/4| 1/3| 1/2| 1/2| See Table 9.1
Motor RPM| Max 1100| Max 1100| Max 1100| Max 1100| 1725| 1725| 1725| 1725| 1725| 1725| 1725

Table 7.2 – Blower Unit Model HDC and BTX Operating Electrical Data

Table 7.3 – Blower Model BTX Motor Amp Draw ④ ⑤

| Supply Voltage
---|---
Motor HP| 115V/1ph| 230V/1ph| 208V/3ph| 230V/3ph| 460V/3ph| 575V/3ph
1/4| 3.70| –| –| –| –| –
1/3| 5.00| 2.50| 1.10| 1.10| 0.60| 0.60
1/2| 7.20| 3.60| 2.10| 2.20| 1.10| 0.80
1| 12.00| 6.00| 3.20| 3.20| 1.60| 1.30
1- 1/2| 15.00| 7.50| 4.60| 4.80| 2.40| 1.90
2| –| –| 6.00| 5.80| 2.90| 2.30
3| –| –| 8.40| 7.80| 3.90| 3.20
5| –| –| 13.60| 12.30| 6.20| 5.10

Table 7.4 – Blower Model BTX Control Circuit Amp Draw ④ ⑤

| Supply Voltage
---|---
Model Size| 115V/1ph| 230V/1ph| 208V/3ph| 230V/3ph| 460V/3ph| 575V/3ph
150- 250| 2.55| 1.28| 1.41| 1.28| 0.64| 0.51
300| 1.11| 0.56| 0.61| 0.56| 0.28| 0.22
350- 400| 1.65| 0.83| 0.91| 0.83| 0.41| 0.33

Table 7.5 – Blower Model BTX Accessory Transformer Size (kVA) ⑥

| Supply Voltage
---|---
208V| 230V| 460V| 575V
Model Size| 3 ph| 1 or 3 ph| 3 ph| 3 ph
150- 250| 0.50| 0.50| 0.50| 0.50
300- 400| 0.50| 0.25| 0.25| 0.25

1. Ratings shown are for elevations up to 2,000 ft. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level. (In Canada see rating plate.) Reduction of ratings requires use of a high altitude kit.
2. Data taken at 55°F air temperature rise. At 65°F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods.
3. All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor manufacturer and Modine. Model HDC motors are open drip proof, while model BTX motors are totally enclosed and all single phase motors have built-in thermal overload protection.
4. Amp draw data shown is operating amp draw at incoming power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw . For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code.
5. For BTX models, add the Motor Amp Draw and Control Circuit Amp Draw to get the Total Unit Amp Draw.
6. Transformers for blower models are typically smaller than those used for propeller models, as the transformer is not needed for the blower motor. Size 300-400 use a PSC power exhauster motor, further reducing the required transformer size.

BLOWER PERFORMANCE DATA – MODEL HDC

Table 8.1 – Power Code Description – HDC Models

Power Code| Unit Voltage| HDC60| HDC75| HDC100| HDC125
---|---|---|---|---|---
01| 115/60/1| 1/4 HP| 1/3 HP| 1/2 HP| 1/2 HP

Blower Speed Curves
Models (HDC 60-125)

BLOWER PERFORMANCE DATA – MODEL BTX

Table 9.1 – Power Code Description – Blower Model BTX ①

| BTX150| BTX175| BTX200| BTX250| BTX300| BTX350| BTX400
---|---|---|---|---|---|---|---
Power Code| Voltage| Phase| HP| Drive| HP| Drive| HP| Drive| HP| Drive| HP| Drive| HP| Drive| HP| Drive
01| 115| 1| 1/4| 230| –| –| –| –| –| –| –| –| –| –| –| –
02| 115/230| 1| 1/3| 230| 1/3| 238| 1/2| 233| 1/2| 204| 1| 240| 1 1/2| 250| 1 1/2| 247
08| 208-230/460| 3| 1/3| 230| 1/3| 238| 1/2| 233| 1/2| 204| 1| 257| 1 1/2| 251| 1 1/2| 248
11| 575| 3| 1/3| 231| 1/3| 239| 1/2| 233| 1/2| 204| 1| 257| 1 1/2| 251| 1 1/2| 248
13| 115/230| 1| 1/3| 232| 1/2| 229| 1| 229| 1| 241| 1| 241| 1 1/2| 247| –| –
19| 208-230/460| 3| 1/3| 232| 1/2| 229| 1| 259| 1| 258| 1| 258| 1 1/2| 248| 2| 177
22| 575| 3| 1/3| 233| 1/2| 229| 1| 259| 1| 258| 1| 258| 1 1/2| 248| 2| 177
24| 115/230| 1| 1/2| 229| 1| 175| 1| 175| 1.5| 23| 1 1/2| 243| 1 1/2| 252| –| –
30| 208-230/460| 3| 1/2| 229| 1| 253| 1| 253| 1.5| 177| 1 1/2| 244| 1 1/2| 180| 3| 246
33| 575| 3| 1/2| 229| 1| 253| 1| 253| 1.5| 177| 1 1/2| 244| 1 1/2| 180| 3| 246
35| 115/230| 1| 1| 175| 1 1/2| 237| 1 1/2| 235| –| –| 1 1/2| 23| –| –| –| –
41| 208-230/460| 3| 1| 253| 1 1/2| 234| 1 1/2| 236| 2| 180| 1 1/2| 177| 2| 177| 5| 245
44| 575| 3| 1| 253| 1 1/2| 234| 1 1/2| 236| 2| 180| 1 1/2| 177| 2| 177| 5| 245
52| 208-230/460| 3| –| –| –| –| –| –| –| –| 2| 177| 2| 180| –| –
55| 575| 3| –| –| –| –| –| –| –| –| 2| 177| 2| 180| –| –
63| 208-230/460| 3| –| –| –| –| –| –| –| –| 3| 112| 3| 246| –| –
66| 575| 3| –| –| –| –| –| –| –| –| 3| 112| 3| 246| –| –
74| 208-230/460| 3| –| –| –| –| –| –| –| –| –| –| 5| 245| –| –
77| 575| 3| –| –| –| –| –| –| –| –| –| –| 5| 245| –| –

① For selection of correct Power Code, refer to the Tables on pages 10-11 .

Table 9.2 – Filter Static Pressure Drop ②

| BTX150| BTX175| BTX200| BTX250| BTX300| BTX350| BTX400
---|---|---|---|---|---|---|---
Filter Static (“W.C.)| 0.1| 0.2| 0.1| 0.2| 0.2| 0.2| 0.2

② For blower units with enclosure and filter, add the following static pressures to the static pressure determined by the system designer for total external static pressure .

Table 10.1 – Blower Model BTX 150-250 (40-55°F temp rise for 250 size unit) ① ② ③

Table 10.2 – Alternate Drives for 208-230/460V 3 Ph, 1 HP Motors

229 = 259
BTX250| 241 = 258

Table 10.3 – Alternate Drives for 208-230/460V 3 Ph, 1-1/2 HP Motors

Model| 1-1/2 HP Drive Listed| 1-1/2 HP Drive for 230/460V
---|---|---
BTX150| – = –
BTX175| 237 = 234
BTX200| 235 = 236
BTX250| 23 = 177

Table 10.4 – Alternate Drives for 575V

BTX150

| 175 = 253
230 = 231
232 = 233

BTX175

| 175 = 253
237 = 234
238 = 239
BTX200| 229 = 259
235 = 236
BTX250| 23 = 177
241 = 258

1. Outputs shown are for elevations up to 2000′.
   For elevations over 2000’, output needs to be reduced 4% for each 1000′ above sea level. (Does not apply in Canada – see rating plate).

2. Sheave turns open are approximate.
   For proper operation, check blower rpm.

3. For 208-230/460V (1 HP and 1-1/2 HP) or 575V selections, see Tables 10 .2, 3, & 4 for the corrected Drive Number.

Table 11.1 – Blower Model BTX 250-400 (60-70°F temp rise for 250 size unit) ① ② ③

Table 11.2 – Alternate Drives for 208-230/460V 3 Ph, 1 HP Motors

Table 11.3 – Alternate Drives for 208-230/460V 3 Ph, 1-1/2 HP Motors

Model| 1-1/2 HP Drive Listed| 1-1/2 HP Drive for 230/460V
---|---|---
BTX300| 23| =| 177
243| =| 244
BTX350| 247| =| 248
250| =| 251
252| =| 180
BTX400| 247| =| 248
250| =| 251
252| =| 180

Table 11.4 – Alternate Drives for 575V

1. Outputs shown are for elevations up to 2000′.
   For elevations over 2000’, output needs to be reduced 4% for each 1000′ above sea level . (Does not apply in Canada – see rating plate).

2. Sheave turns open are approximate.
   For proper operation, check blower rpm.

3. For 208-230/460V (1 HP and 1-1/2 HP) or 575V selections, see Tables 11 .2, 3, & 4 for the corrected Drive Number.

GAS CONTROL DATA – ALL MODELS

Table 12.1 – Electrical Selection Details – All Models

Model| Supply Voltage| Phase| Motor Voltage| Power Exhaust & Gas Control Circuit Voltage| Accessory Transformer Required ①| Factory Installed Transformer| Motor Starter Coil Voltage
---|---|---|---|---|---|---|---
HDS/HDC & PTX| 115| 1| 115V/1ph| 115V/1ph| none| 115V to 24V| none
208| 1 or 3| 208V to 115V
230| 230V to 115V
460| 3| 460V to 115V
575| 575V to 115V
BTX| 115| 1| 115V/1ph| 115V/1ph| none| 115 to 24V| none
208| 1| 208V/1ph| 208V to 115V| 115V
230| 230V/1ph| 230V to 115V
208| 3| 208V/3ph| 208V to 115V
230| 230V/3ph| 230V to 115V
460| 3| 460V/3ph| 460V to 115V
575| 575V/3ph| 575V to 115V

① For accessory transformer sizing, refer to Table 6.2 for HDS, HDC, and PTX models and Table 7.5 for model BTX.

Table 12.2 – Gas Controls – All Models ②

Model Size| Control System Description| Gas Type| Control Code| Control Voltage
---|---|---|---|---
30- 400| Single-Stage, Direct Spark Ignition| Natural| 11| 24V
Utilizes a single-stage combination gas control and an ignition control. Gas is automatically lit with the direct spark igniter on call for heat.| Propane| 21
75- 400| Two-Stage, Direct Spark Ignition| Natural| 12
Utilizes a two-stage combination gas control (fires at 50% or 100% of full rated input) and an ignition control. Gas is automatically lit with the direct spark igniter on call for heat.| Propane| 22

② All ignition controls are 100% Shut-Off with Continuous Retry.

ACCESSORIES – ALL MODELS

Table 13.1 – Field Installed Accessories

| Feature| Model
---|---|---
HD| HDB| PTX| BTX
Cabinet and Air Mover| Vertical Deflector Blades – Allows directional discharge air control in the left and right directions.| •| •| •| •
Downward Air Deflector Hoods – Available in 30°, 60°, and 90° configurations these deflector hoods enable the unit to be mounted higher while still providing heat to the building occupants. Refer to page 14 for further details.| •| •| •| •
Vibration Isolation Kit – Minimizes unit vibration transmission to the building structure.| •| •| |
Horizontal Concentric Vent Kit – Enables horizontal concentric venting. Kit consists of one concentric adapter, one vent terminal, and one bird screen. (See Figure 13.1.)| •| •| •| •
Vertical Concentric Vent Kit – Enables vertical concentric venting. Kit consists of one concentric adaptor, one combustion air inlet cap, and one vent terminal cap. (See Figure 13.2.)| •| •| •| •
Pipe Hanger Adapter Kits – Allows the unit to be suspended by 3/4″ pipe from the standard 3/8″ holes found in the top of the unit.| | | •| •
Discharge Transition for Polytube – Allows for the connection of polytube (not included) to the discharge of the unit.| | •| | •
Blower Enclosure with or without Filter Rack – Totally encases the motor and blower assembly. Optional filters provide filtering of the air prior to entering the heater.| | •| | •
Belt Guard – Provides protection for building occupants as well as service people from the drive belt and sheaves.| | | | •
Controls| Natural Gas to Propane Gas Conversion Kit – Provides all required parts as well as instructions to convert a natural gas unit to propane gas.| •| •| •| •
Single or Two-Stage Room Thermostats – See Table 13.2 for details.| •| •| •| •
Room Thermostat Guard – Clear plastic for room thermostats. Guard is locking type and comes with two keys.| •| •| •| •
Stepdown Transformers – Used to operate propeller units on 208/230/460/575V/3Ph supply voltage. Also may be required for control circuits for blower units. Refer to Table 12.1 for further selection details.| •| •| •| •
Control Relays – This single pole single throw relay consists of a 24V coil with a maximum contact rating of 18 amps at 115V.| •| •| •| •
Gas Pressure Regulator – Fisher Type S-100, 3/4 inch pressure regulator for 1/2 to 50 psi inlet pressure capacity, 30 MBH to 400 MBH.| •| •| •| •
Figure 13.1 – Horizontal Concentric Vent Kit| Figure 13.2 – Vertical Concentric Vent Kit
---|---

Table 13.2 – Field Installed Thermostats

Thermostat includes 3 swap panels:
1.) Fan: On/Auto, System: Heat/Off/Cool, 2.) Fan: On/Auto, System: On/Off, 3.) System: On/Off
Two-Stage Thermostats| Room – Digital| Thermostat, Modine Pro1 T-715M: 41-95°F, Heat/Auto/Off, Fan Auto/On, 7-day programmable
Room – WiFi| WiFi Thermostat, Modine Pro1 T855iSH: 41-95°F, 7-day prog, wifi, hardwire only
Duct| Johnson Controls A350 Electronic Temp Control with Sensor and S350 Stage Adder (Blower units only)
Guard| Room| Thermostat Guard, Modine Pro1 T-150, Clear Plastic, Tumbler Lock with two keys

PERFORMANCE DATA – HOODS FOR PROPELLER MODELS

Table 14.1 – Deflector Hood General Performance Data – Model HDS

Model Size| Airflow| Temp Rise| Mounting Height| Blade Angle| 30° Hood| 60° Hood| 90° Hood
---|---|---|---|---|---|---|---
X| Y| Z| X| Y| Z| S
(cfm)| (°F)| (ft)| (°)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)
30| 505| 44| 8| 31| 6| 15| 21| 0| 14| 20| 10
9| 15| 4| 12| 18| 0| 11| 15| 10
45| 720| 46| 8| 52| 11| 25| 34| 0| 25| 35| 17
10| 39| 9| 23| 31| 0| 22| 31| 15
12| 22| 7| 19| 27| 0| 17| 24| 14
60| 990| 45| 8| 49| 10| 23| 31| 0| 23| 32| 15
10| 35| 8| 20| 28| 0| 20| 28| 14
12| 10| 5| 15| 22| 0| 13| 18| 13
75| 1160| 48| 8| 55| 12| 27| 37| 0| 28| 38| 19
10| 44| 10| 25| 34| 0| 25| 35| 17
12| 30| 9| 22| 31| 0| 21| 29| 15
14| 13| 6| 18| 26| 0| 15| 22| 14
100| 1490| 50| 8| 52| 11| 25| 34| 0| 26| 35| 17
10| 40| 9| 23| 32| 0| 23| 31| 15
12| 23| 7| 19| 27| 0| 18| 25| 14
13| 10| 5| 15| 22| 0| 13| 18| 13
125| 1980| 47| 8| 63| 17| 36| 49| 0| 38| 52| 27
10| 56| 15| 35| 48| 0| 36| 50| 24
12| 48| 14| 33| 46| 0| 34| 46| 22
14| 38| 13| 31| 43| 0| 31| 42| 21
16| 26| 11| 27| 39| 0| 26| 36| 19
18| 18| 9| 25| 35| 0| 15| 21| 18

Note: Refer to Figures 14.2 through 14.3.

Table 14.2 – Deflector Hood General Performance Data – Model PTX

Model Size| Airflow| Temp Rise| Mounting Height| Blade Angle| 30° Hood| 60° Hood| 90° Hood
---|---|---|---|---|---|---|---
X| Y| Z| X| Y| Z| S
(cfm)| (°F)| (ft)| (°)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)
150| 2139| 53| 8| 60| 15| 32| 44| 0| 34| 47| 24
10| 52| 13| 31| 42| 0| 32| 44| 21
12| 42| 12| 29| 40| 0| 29| 40| 19
14| 30| 10| 26| 36| 0| 25| 34| 18
16| 9| 7| 20| 29| 0| 17| 24| 17
175| 2726| 48| 8| 60| 14| 32| 43| 0| 33| 46| 23
10| 51| 13| 30| 42| 0| 31| 43| 21
12| 41| 12| 28| 39| 0| 28| 39| 19
14| 29| 10| 25| 35| 0| 24| 33| 17
16| 8| 6| 17| 26| 0| 15| 21| 16
200| 2780| 54| 8| 59| 14| 30| 42| 0| 32| 44| 22
10| 49| 12| 29| 40| 0| 30| 41| 19
12| 39| 11| 27| 37| 0| 26| 36| 18
14| 24| 9| 23| 33| 0| 21| 30| 16
15| 13| 7| 20| 29| 0| 17| 24| 16
17| 12| 8| 22| 32| 0| 19| 27| 18
250| 3994| 47| 8| 66| 19| 41| 56| 0| 43| 59| 32
10| 60| 18| 40| 54| 0| 42| 57| 29
12| 53| 17| 38| 53| 0| 40| 54| 26
14| 46| 15| 36| 50| 0| 37| 51| 24
16| 37| 14| 34| 47| 0| 33| 46| 23
18| 26| 12| 31| 43| 0| 28| 40| 21
20| 8| 7| 22| 32| 0| 19| 26| 20
300| 4543| 50| 8| 69| 22| 45| 62| 0| 48| 66| 37
10| 63| 21| 44| 61| 0| 47| 64| 33
12| 57| 19| 43| 59| 0| 45| 62| 30
14| 51| 18| 42| 57| 0| 43| 59| 28
16| 44| 17| 40| 55| 0| 40| 55| 26
18| 35| 15| 37| 52| 0| 36| 50| 25
20| 25| 13| 33| 47| 0| 31| 43| 24
22| 9| 8| 25| 37| 0| 21| 30| 23
350| 5278| 50| 8| 68| 20| 43| 58| 0| 45| 62| 34
10| 61| 19| 42| 57| 0| 44| 60| 31
12| 55| 18| 40| 55| 0| 42| 58| 28
14| 48| 17| 39| 53| 0| 40| 54| 26
16| 40| 15| 37| 51| 0| 36| 50| 24
18| 31| 13| 34| 47| 0| 32| 44| 23
20| 17| 10| 29| 41| 0| 25| 35| 22
21| 2| 7| 23| 34| 0| 18| 26| 21
400| 5995| 51| 8| 70| 24| 49| 66| 0| 52| 71| 41
10| 65| 22| 48| 65| 0| 51| 69| 37
12| 59| 21| 47| 64| 0| 49| 67| 34
14| 54| 20| 45| 62| 0| 47| 64| 31
16| 47| 19| 44| 60| 0| 44| 61| 29
18| 40| 17| 41| 57| 0| 41| 57| 28
20| 32| 15| 38| 54| 0| 37| 51| 26
22| 21| 13| 34| 48| 0| 31| 43| 25
23| 13| 11| 31| 44| 0| 26| 37| 24

Note: Refer to Figures 14.2 through 14.3.

Table 15.1 – Deflector Hood General Performance Data – Model HDC

Model Size| Airflow| Temp Rise| Mounting Height| Blade Angle| 30° Hood| 60° Hood| 90° Hood
---|---|---|---|---|---|---|---
X| Y| Z| X| Y| Z| S
(cfm)| (°F)| (ft)| (°)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)
60| 808| 55| 8| 27| 5| 14| 20| 0| 13| 18| 10
9| 8| 4| 11| 16| 0| 8| 12| 9
75| 1010| 55| 8| 45| 9| 20| 28| 0| 21| 28| 14
10| 27| 7| 17| 24| 0| 16| 23| 12
11| 13| 5| 14| 21| 0| 12| 17| 12
100| 1347| 55| 8| 44| 9| 20| 28| 0| 21| 28| 14
10| 27| 7| 17| 24| 0| 16| 23| 12
11| 12| 5| 14| 20| 0| 12| 17| 12
125| 1543| 60| 8| 49| 10| 23| 32| 0| 24| 32| 16
10| 35| 8| 21| 29| 0| 20| 28| 14
12| 13| 6| 16| 23| 0| 14| 19| 13

Note: Refer to Figures 14.2 through 14.3 on page 14.

Table 15.2 – Deflector Hood General Performance Data – Model BTX

Model Size| Airflow| Temp Rise| Mounting Height| Blade Angle| 30° Hood| 60° Hood| 90° Hood
---|---|---|---|---|---|---|---
X| Y| Z| X| Y| Z| S
(cfm)| (°F)| (ft)| (°)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)| (ft)
150| 2020| 55| 8| 57| 13| 29| 40| 0| 31| 42| 21
10| 48| 12| 28| 38| 0| 28| 39| 19
12| 37| 10| 25| 35| 0| 25| 34| 17
14| 21| 8| 21| 30| 0| 19| 27| 16
15| 10| 7| 19| 27| 0| 12| 18| 15
175| 2357| 55| 8| 51| 11| 24| 33| 0| 25| 34| 17
10| 39| 9| 22| 31| 0| 22| 30| 15
12| 22| 7| 19| 26| 0| 17| 23| 14
13| 2| 5| 14| 21| 0| 10| 14| 13
200| 2694| 55| 8| 57| 13| 29| 39| 0| 30| 41| 20
10| 47| 12| 27| 37| 0| 28| 38| 18
12| 35| 10| 25| 34| 0| 24| 33| 17
14| 18| 7| 20| 29| 0| 18| 25| 15
15| 2| 5| 16| 24| 0| 11| 16| 15
250| 3367| 55| 8| 59| 14| 31| 42| 0| 32| 44| 22
10| 50| 13| 29| 40| 0| 30| 41| 20
12| 39| 11| 27| 37| 0| 27| 37| 18
14| 25| 9| 23| 33| 0| 22| 30| 17
15| 15| 7| 20| 29| 0| 18| 25| 16
300| 4040| 55| 8| 64| 17| 37| 51| 0| 40| 54| 29
10| 57| 16| 36| 50| 0| 38| 52| 26
12| 50| 15| 35| 48| 0| 36| 49| 23
14| 41| 13| 33| 45| 0| 33| 45| 22
16| 30| 12| 30| 41| 0| 28| 39| 20
18| 14| 9| 24| 35| 0| 21| 29| 19
350| 4714| 55| 8| 63| 16| 36| 49| 0| 37| 51| 27
10| 55| 15| 34| 47| 0| 36| 49| 24
12| 47| 14| 33| 45| 0| 33| 46| 22
14| 37| 12| 30| 42| 0| 30| 41| 20
16| 25| 10| 27| 38| 0| 25| 34| 19
18| 2| 6| 20| 29| 0| 13| 19| 18
400| 5387| 55| 8| 67| 19| 41| 56| 0| 44| 60| 32
10| 60| 18| 40| 55| 0| 42| 58| 29
12| 53| 17| 39| 53| 0| 40| 55| 26
14| 46| 15| 37| 51| 0| 37| 51| 25
16| 37| 14| 34| 48| 0| 34| 47| 23
18| 26| 12| 31| 43| 0| 29| 40| 22
20| 8| 8| 23| 34| 0| 20| 28| 21

Note: Refer to Figures 14.2 through 14.3 on page 14.

UNIT SELECTION

Selection Procedure
In order to properly select a unit heater it is necessary to have the following basic information .

1. Heating output capacity
   Model size output is to be matched against the heat loss to be replaced .

2. External static pressure (blower units only)
   The external static pressure (E .S .P.) is determined using the ASHRAE Guide for duct losses or provided by the design engineer.

3. Accessory internal static pressure (transitions, filters, etc.) (blower units only)
   The critical accessories are those that add internal static pressure (I .S .P .) to the unit . Once these items are determined, the total pressure drop can be determined (if applicable).

4. Heat exchanger material
   The heat exchanger type is determined by the application.
   The standard heat exchanger material is aluminized steel.
   A 409 stainless steel heat exchanger is recommended when the combined entering/return air to the unit is below 40°F or in high humidity applications .

5. Type of fuel
   Either natural or propane gas determined by the design engineer.

6. Gas controls
   Either single stage or two stage, as determined by the design engineer.

7. Main power supply voltage to unit

8. BMS (yes/no)
   Building management system (BMS), interface board

Selection Example (Propeller Unit)

Selection Example Conditions (Propeller Unit)
Select a unit heater to meet the following conditions:

1. Heating output capacity = 156,000 Btu/Hr per design engineer
2. External Static Pressure = 0 .0
3. Internal Static Pressure = 0 .0 . No static producing accessories are required
4. Heat exchanger and burner = 409 Stainless Steel
5. Gas Type = Natural
6. Gas Controls = Single Stage
7. Supply Voltage: 460V/60Hz/3Ph
8. BMS needed

With the information listed above, the basic model, using the information in this catalog and the Model Nomenclature shown on page 23, can be selected as shown:

1. Determine the Model and Input Rating (MBH):
   Using the Heating output capacity, the Furnace Input Rating is determined from Table 6 .1 . The closest model to 156,000 Btu/Hr output has an Btu/Hr Input rating of 200,000 Btu/Hr so the Furnace Input Rating = 200 . The corresponding model for a 200 size, propeller, separated combustion unit heater is PTX . The model and size are a PTX200 .

2. Determination of Heat Exchanger Material:
   From item #4 in the example, the Heat Exchanger required is 409 Stainless Steel . Thus, the Heat Exchanger Material = S from the Model Nomenclature on page 23 .

3. Determine the Ignition Type:
   The Ignition Type = S from the Model Nomenclature on page 23.

4. Determine Power Code Required:
   Referring to Table 6 .2, it can be seen that the supply voltage from the example conditions is not available (460V).
   A transformer kit selected later in this example must be used.
   In this instance, from Table 6 .2 select the 115V/60Hz/1Ph power code (PC) = 01 unit .

5. Determine the control type:
   From items #5 and #6 in the example conditions, the gas type is Natural Gas and controls are Single Stage . From Table 12 .2, we are directed to use Control Code (CC) of 11.

6. Determine the fan guard type:
   No specific type of fan guard was specified, so select Fan Guard = S from the Model Nomenclature on page 23 .

7. Determine factory installed option: non-BMS = N, BMS = C.
   At this point we have a full model number of: PTX200SS0111SBAC

8. Determination of transformer:
   To operate a 115V/60Hz/1Ph unit on 460V/60Hz/3Ph supply power a unit step down transformer must be selected. By referring to Table 12 .1 we see that a 460V to 115V step down transformer is required . As noted in the footnote for Table 12 .1, the size can be determined to be 0 .75kVA from Table 6 .2.

Selection Example (Blower Unit)

Selection Example Conditions (Blower Unit)
In the following example, select a unit heater to meet the following conditions:

1. Heating output capacity = 156,000 Btu/Hr per design engineer
2. External Static Pressure = 0 .2.
3. Internal Static Pressure = 0 .0. No static producing accessories are required at this point, but filters may be added later.
4. Heat exchanger and burner = Aluminized Steel
5. Gas Type = Propane
6. Gas Controls = Two Stage
7. Supply Voltage: 230V/60Hz/3Ph
8. CFM = 2,400
9. BMS not needed

With the information listed above, the basic model, using the information in this catalog and the Model Nomenclature shown on page 23, can be selected as shown:

1. Determine the Model and Input Rating (MBH):
   Using the Heating output capacity, the Furnace Input Rating is determined from Table 7 .1. The closest model to 156,000 Btu/Hr output has an Btu/Hr Input rating of 200,000 Btu/Hr so the Furnace Input Rating = 200. The corresponding model for a 200 size, blower, separated combustion unit heater is BTX. The model and size are a BTX200.

2. Determination of Heat Exchanger Material:
   From item #4 in the example, the Heat Exchanger required is aluminized steel. Thus, the Heat Exchanger Material = A from the Model Nomenclature on page 23.

3. Determine the Ignition Type:
   The Ignition Type = S from the Model Nomenclature on page 23.

4. Determine Power Code Required:
   From page 10 we see that a unit requiring a static of 0.2 and a cfm of 2400 requires a 1/2 horsepower motor with a -233 drive that is turned open 1 .5 turns. Referring to Table 9 .1 it can be determined that for a BTX200 with a 1/2 HP motor and a -233 drive operating on 230V/60Hz/3Ph that it will have a power code = 08. However, note that if filters are added later, that drive/motor combination will not be sufficient. Two alternate drive selections could have been made with a 1hp motor with either a -253 or -229 drive.
   The power code would be 30 or 19 respectively. Note that the 229 drive would likely be the best choice, as the turns open is near the center of the range.

5. Determine the control type:
   From items #5 and #6 in the example, the gas type is Propane Gas and controls are Two Stage. From Table 12 .2, we are directed to use Control Code (CC) =

7. Determine factory installed option: non-BMS = N, BMS = C .

At this point we have a full model number of: BTX200AS1922NBAN
6. Determination of Transformer:
To operate the BTX200AS1922NBAN on 230V/60Hz/3ph supply voltage, we need to review Table 12.1 to determine if any field installed transformers are required. The table indicates that we need a 230V to 115V step down transformer for the power exhaust and gas control circuit voltage. As indicated in the footnote for that table, Table 7.5 directs us to the correct size for this model, which is 0 .5kVA. Transformers for blower models are typically smaller than those used for propeller models, as the transformer is not needed for the blower motor.

DIMENSIONAL DATA – HDS/HDC

Figure 18.1 – Dimensional Drawings – Models HDS/HDC

Table 18.1 – Dimensions (inches) ①

| Propeller Model Size – HDS| Blower Model Size – HDC
---|---|---
Dimension| 30| 45| 60| 75| 100/125| 60| 75| 100/125
A| 26.8| 26.8| 26.8| 26.8| 35.5| 26.8| 26.8| 35.5
B| 12.2| 12.2| 18| 18| 20.5| 18| 18| 20.5
C| 16.5| 16.5| 16.5| 16.5| 22| 16.5| 16.5| 22
D| 14.9| 14.9| 14.9| 14.9| 22.5| 14.9| 14.9| 22.5
E| 10.1| 10.1| 15.9| 15.9| 13.4| 15.9| 15.9| 18.4
F| 7.25| 7.25| 10.75| 10.75| 14| 10.75| 10.75| 14
G| 18.5| 18.5| 18.5| 18.5| –| 18.5| 18.5| –
H| 7.6| 7.6| 7.835| 7.835| 8.4| 7.835| 7.835| 8.4
I| 34.5| 34.5| 34.5| 34.5| 43| 35.5| 35.5| 44.5
J| 22| 22| 25| 25| 31| 32.5| 32.5| 41.5
K| 2.74| 2.74| 3.15| 3.15| 3.87| 3.15| 3.15| 3.87
L| 3.19| 3.19| 5.55| 5.55| 10.73| 5.55| 5.55| 10.73
Gas Connecton| 1/2″| 1/2″| 1/2″| 1/2″| 1/2″| 1/2″| 1/2″| 1/2″
Vent and Combustion Air Connector Size| 3| 3| 4| 4| 4| 4| 4| 4
Fan or Blower Diameter| 10| 10| 14| 14| 18| 9 – 7| 9 – 7| 10 – 10
Approx. Weight (lbs.)| 55| 60| 80| 85| 125| 92| 97| 125

① Do not use propeller units with duct work.

Figure 18.2 – Mounting Bracket Slot Locations

Table 18.2 – Clearances

Unit Side| Clearance to Combustible Material| Recommended Service Clearance
---|---|---
HD| HDB| HD/HDB
Top and Bottom| 1″| 6″| 18″
Access Side| 1″| 6″| 18″
Non-Access Side| 1″| 6″| 18″
Rear| 18″| 18″| 18″
Vent Connector| 4″| 4″| 18″

DIMENSIONAL DATA – MODEL PTX

Figure 19.1 – Dimensional Drawings – Model PTX

Table 19.1 – Dimensions (inches) – PTX ①

Models| PTX150| PTX175| PTX200| PTX250| PTX300| PTX350| PTX400
---|---|---|---|---|---|---|---
A| 35.53| 42.53| 42.53| 42.53| 42.53| 42.53| 42.53
B| 23.06| 25.81| 25.81| 31.31| 31.31| 39.56| 39.56
C| 22.05| 22.05| 22.05| 22.05| 22.05| 22.05| 22.05
D| 22.52| 29.52| 29.52| 29.52| 29.52| 29.52| 29.52
E| 16.20| 18.95| 18.95| 29.43| 29.43| 32.17| 32.17
F| 15.33| 16.70| 16.70| 19.45| 19.45| 23.58| 23.58
G (Mounting Hole) ②| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16
H| 8.37| 8.37| 8.37| 8.37| 8.37| 8.37| 8.37
I| 4.50| 4.50| 4.50| 4.50| 4.50| 4.50| 4.50
J| 8.09| 9.47| 9.47| 6.72| 6.72| 10.84| 10.84
K| 3.87| 3.87| 3.87| 5.20| 5.20| 5.20| 5.20
L| 12.17| 13.55| 13.55| 12.66| 12.66| 16.78| 16.78
M| 31.79| 32.83| 34.43| 33.83| 33.83| 34.83| 34.83
Q ③| 43.79| 44.83| 46.43| 45.83| 45.83| 46.83| 46.83
R| 3.56| 3.56| 3.56| 3.56| 3.56| 3.56| 3.56
S| 14.90| 14.90| 14.90| 14.90| 14.90| 14.90| 14.90
T| 10.00| 10.00| 10.00| 10.00| 10.00| 10.00| 10.00
U| 13.54| 20.53| 20.53| 20.53| 20.53| 20.53| 20.53
Gas Connection| 1/2| 1/2| 1/2| 3/4| 3/4| 3/4| 3/4
Vent and Combustion Air Connector Size| 4″| 4″`| 4″| 6″| 6″| 6″| 6″
Fan Diameter| 20.00| 22.00| 22.00| 22.00| 22.00| 24.00| 26.00
Approx. Shipping Weight (lbs.)| 165| 210| 220| 265| 270| 310| 320

1. Do not use propeller units with duct work.
2. Listed is the hole diameter and threads per inch to accept threaded rod.
3. Dimension equals overall plus 12″.

Table 19.2 – Clearances to Combustible Materials

Unit Side| Clearance To Combustible Materials| Recommended Service Clearance
---|---|---
Top and Bottom| 6″| 6″
Access Side| 6″| 18″
Non-Access Side| 6″| 6″
Rear| 18″| 18″
Vent Connector| 6″| 6″

DIMENSIONAL DATA – MODEL BTX

Figure 20.1 – Dimensional Drawings – Model BTX

Table 20.1 – Dimensions (inches) — BTX

Models| BTX150| BTX175| BTX200| BTX250| BTX300| BTX350| BTX400
---|---|---|---|---|---|---|---
A| 35.53| 42.53| 42.53| 42.53| 42.53| 42.53| 42.53
B| 23.06| 25.81| 25.81| 31.31| 31.31| 39.56| 39.56
C| 22.05| 22.05| 22.05| 22.05| 22.05| 22.05| 22.05
D| 22.52| 29.52| 29.52| 29.52| 29.52| 29.52| 29.52
E| 21.18| 23.93| 23.93| 29.43| 29.43| 32.17| 32.17
F| 15.33| 16.70| 16.70| 19.45| 19.45| 23.58| 23.58
G (Mounting Hole) ①| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16| 3/8-16
H| 8.37| 8.37| 8.37| 8.37| 8.37| 8.37| 8.37
I| 4.50| 4.50| 4.50| 4.50| 4.50| 4.50| 4.50
J| 8.09| 9.47| 9.47| 6.72| 6.72| 10.84| 10.84
K| 3.87| 3.87| 3.87| 5.20| 5.20| 5.20| 5.20
L| 12.17| 13.55| 13.55| 12.66| 12.66| 16.78| 16.78
M ②| 52.25| 52.19| 52.19| 58.88| 58.88| 58.88| 58.88
N| 33.18| 33.90| 33.90| 39.88| 39.88| 39.88| 39.88
O| 23.90| 24.13| 24.13| 27.04| 27.04| 28.57| 28.57
P| 24.77| 24.52| 24.52| 27.19| 27.19| 28.28| 28.28
Q (w/Blower Encl & Filter Rack)| 73.04| 73.70| 73.70| 79.68| 79.68| 79.68| 79.68
Q (w/o Blower Encl & Filter Rack)| 64.25| 64.19| 64.19| 70.88| 70.88| 70.88| 70.88
R| 3.56| 3.56| 3.56| 3.56| 3.56| 3.56| 3.56
S| 14.90| 14.90| 14.90| 14.90| 14.90| 14.90| 14.90
T| 10.00| 10.00| 10.00| 10.00| 10.00| 10.00| 10.00
U| 13.54| 20.53| 20.53| 20.53| 20.53| 20.53| 20.53
V| 14.52| 14.52| 14.52| 18.04| 18.04| 18.00| 18.00
W| 3.27| 7.15| 7.15| 4.77| 4.77| 5.24| 5.24
X| 17.38| 17.38| 17.38| 20.38| 20.38| 20.38| 20.38
Gas Connection| 1/2| 1/2| 1/2| 3/4| 3/4| 3/4| 3/4
Vent and Combustion Air Connector Size| 4″| 4″| 4″| 6″| 6″| 6″| 6″
Blower| 12-12| 12-12| 12-12| 15-15| 15-15| 15-15| 15-15
Approx. Shipping Weight (lbs.)| 220| 275| 280| 340| 345| 395| 405

1. Listed is the hole diameter and threads per inch to accept threaded rod.
2. This is an approximate dimension for standard motors, allow 3″ for sheave and optional motors.

Table 20.2 – Clearances to Combustible Materials

Unit Side| Clearance To Combustible Materials| Recommended Service Clearance
---|---|---
Top and Bottom| 6″| 6″
Access Side| 6″| 18″
Non-Access Side| 6″| 6″
Rear| 18″| 18″
Vent Connector| 6″| 6″

SPECIFICATIONS – ALL MODELS

General
A. Standards
All unit(s) shall include:
A.1. ETL Listed and ETL Verified design certification for use in both the US and Canada to the ANSI Z83.8 – latest revision, standard for “Gas Unit Heater and Gas-Fired Duct Furnaces” for safe operation, construction, and performance.

B. Mechanical Configuration
B.1. Furnace(s) section with 82% minimum efficiency provided by an indirect- fired tubular heat exchanger with individually fired tubes.

C. Venting Arrangement
C.1. The unit shall be separated combustion. The venting shall be a power exhausted arrangement with a separate combustion air intake pipe connection to allow for fresh combustion air from outside the conditioned space. The unit shall be tested to insure proper ignition when the unit is subjected to 40 mile per hour wind velocities. The unit shall also include a factory mounted differential pressure switch designed to prevent main burner ignition until positive venting has been proven.  (HDS/HDC)
C.2. The unit shall be constructed such that it can be installed either of 2 ways. (PTX/BTX)
C.2.a The unit may be installed as separated combustion power exhausted arrangement with separate vent pipe and combustion air intake pipe to allow for fresh combustion air drawn from outside the conditioned space. (PTX/BTX)
C.2.b The unit may be installed in a 1 pipe power vented arrangement without the combustion air pipe installed, drawing combustion air from inside the conditioned space. This installation shall not be considered a separated combustion installation.
D. Unit Casing
D.1 The unit heater(s) casing shall be constructed of not less than 20 gauge aluminized steel with minimization of exposed fasteners. (PTX/BTX)
D.1.a. The unit heater(s) casing shall be constructed of not less than 22 gauge aluminized steel with minimization of exposed fasteners. (HDS/HDC)
D.2. All exterior casing parts casing parts shall be cleaned of all oils and a phosphate coating applied prior to painting. All exterior casing parts shall be painted with a electrostatically applied baked-on gray-green polyester powder paint (7-mil thickness) for corrosion resistance.
D.3. The unit shall be furnished with horizontal air deflectors. The deflectors are adjustable to provide for horizontal directional airflow control (up or down).
E. Furnace Section
E.1.c. The heat exchanger(s) shall be made of 18 gauge aluminized steel tubes and headers (opt 409 stainless steel). The thermal efficiency of the unit(s) shall be a minimum of 82-83% efficient for all air flow ranges. Each heat exchanger tube shall be individually and directly flame-fired. The heat exchanger tube shall be crimped to allow for thermal expansion and contraction.
The flue collector box shall be made of 20 gauge aluminized steel (opt 409 stainless).
E.2. The heat exchanger(s) seams and duct connections shall be certified to withstand 0.9″ W.C. external static pressure without burner flame disturbance.
E.3. The burner(s) shall be in-shot type, directly firing each heat exchanger tube individually and is (are) designed for good lighting characteristics without noise of extinction for both natural and propane gas.
E.4. The ignition controller(s) shall be 100% shut-off with continuous retry.
E.5. The gas pressure shall be between 6-7″ W.C for natural gas. (opt) The gas pressure shall be 11-14″ W.C. for propane gas.
E.6. The solid state ignition system shall directly light the gas by means of a direct spark igniter each time the system is energized.
E.8. The unit gas controls shall be provided with the following:
E.8.a. (opt) Single-stage gas controls with a single-stage combination gas control, an ignition control, and a single-stage low voltage thermostat. The unit fires at 100% full fire based on a call for heat from a room thermostat.
E.8.b. (opt) Two-stage gas controls with a two-stage combination gas control, an ignition control, and a two- stage low voltage thermostat. The unit fires at 50% fire on low stage or 100% fire on high stage of the unit based on the call for heat from either a room or duct thermostat.
E.9. An automatic reset high limit switch mounted in the air stream to shut off the gas supply in the event of overheating.
E.10. A time delay relay that delays the start of the air mover to allow the heat exchanger a warm-up period after a call for heat. The time delay relay shall also continue the air mover operation after the thermostat has been satisfied to remove any residual heat in the heat exchanger.
E.11. The unit shall be orificed for up to 2000′ elevation above sea level.
E12. For altitude, the manifold pressure has been de-rated to for elevation above sea level.

F. Electrical
F.1. All electrical components shall carry UL, ETL, or CSA listing.
F.2. A low voltage terminal board shall be provided for direct wiring connection to an external thermostat.
F.3. A single 115V to 24V step down transformer shall be provided for all unit controls.
F.4. A contractor convenience junction box with unit on/off switch, terminal board for low voltage wiring, and system status indicator light (PTX/BTX models)

G. Air Mover
G.1. The motor horsepower shall be ____.
G.2. The motor wiring shall be HPN two wire motor code (HDS/HDC).
G.3. The motor wiring shall be jacketed 3 wire motor code (PTX/BTX).
G.4. Propeller models shall meet the following requirements.
G.4.a. The motor type shall be single-speed, totally enclosed (TE) (open drip proof (ODP) on HDS units 75MBH and smaller).
G.4.b. The motor shall be rated for:
(a) 115V/60Hz/1Ph
G.5. Blower models shall meet the following requirements.
G.5.a. The motor type shall be single-speed, totally enclosed (TE) (open drip proof (ODP) on all HDC models).
G.5.b. The motor shall be rated for:
(a) 115V/60Hz/1Ph
(b) 208V/60Hz/1Ph (BTX model)
(c) 230V/60Hz/1Ph (BTX model)
(d) 208V/60Hz/3Ph (BTX model)
(e) 230V/60Hz/3Ph (BTX model)
(f) 460V/60Hz/3Ph (BTX model)
(g) 575V/60Hz/3Ph (BTX model)
G.5.c. The motor shall be provided with an adjustable motor sheave to allow for minor adjustment of the blower rpm at the job site. (BTX model)
G.5.d. The blower shall be a double width, double inlet (DWDI), forward curved, belt driven, assembly with spider ball bearings. (BTX model)
G.5.e. The motor shall be provided with three speed taps to allow for adjustment of the blower rpm at the job site. (HDC model)
G.5.f. The blower shall be a double width, double inlet (DWDI), forward curved, direct motor drive assembly with spider ball bearings. (HDC model)

H. Mounting
H.1. The unit shall be equipped with tapped holes to accept 3/8-16 threaded rod for suspension. (HDS/HDC size 100/125 and PTX/BTX models).
H.1.a. The unit shall be equipped with mounting brackets to allow for threaded rod suspension or to be bolted directly to the ceiling support structure allowing 1″ of top clearance. (HDS/HDC models – opt on sizes 100/125)
H.3. Propeller unit (Sizes 30-400) and blower units (Sizes 60-125) to have 4 suspension points.
H.4. Blower unit (Sizes 150-400) to have 6 suspension points.

J. Accessories
The following field installed accessory control devices shall be provided with the unit:
J.1. A 5-50 psi gas pressure regulator to reduce the inlet gas pressure for the operating controls.
J.2. A clear plastic thermostat guard with two keys for room thermostats.
J.4. Pipe Hanger Adapter Kit to facilitate threaded pipe suspension. (HDS/HDC size 100/125 and PTX/BTX models)
J.7. Vertical Deflector Kit to enable side distribution of airflow.
J.8. A blower enclosure fully encloses blower to enable the attachment of filter racks and/or duct.
J.9. A combination filter rack/duct connector containing a 1″ thick, cleanable filter.
J.11. A belt guard enclosing the belts and sheaves (pulleys) on a blower type unit heater. (BTX model)
J.12. Propane conversion kit for converting natural gas units to propane gas.
J.17. Discharge Transition from unit to polytube. (HDC/BTX models)
J.18. 30° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J.19. 60° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J.20. 90° non-velocity generating downward air deflector hood constructed of 20 ga. cold rolled steel with baked-on gray-green polyester powder paint.
J.21. (opt) A 208V to 115V step down shall be provided for operation of the 115V unit (HDS/HDC/PTX models).J.22. (opt) A 230V to 115V step down shall be provided for operation of the 115V unit (HDS/HDC/PTX models).
J.23 (opt) A 460V to 115V step down shall be provided for operation of the 115V unit (HDS/HDC/PTX models).
J.24. (opt) A 575V to 115V step down shall be provided for operation of the 115V unit (HDS/HDC/PTX models).
J.25. A 208V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTX model)
J.26. A 230V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTX model)
J.27. A 460V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTX model)
J.28. A 575V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTX model)
J.29. A horizontal concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building wall through one opening.
J.30. A vertical concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building roof through one opening.

K. Thermostats
The unit shall be provided with the following thermostat:
K.1. A single stage room thermostat with a 50°-90°F range.
K.2. A single stage room thermostat with a 50°-90°F temperature set point range. The stat shall also include switching for Heat/Off and Fan On/Auto control.
K.3. Modine Pro1 T-501M: 50-90°F, Non-programmable thermostat with 3 swap panels: 1.) Fan: On/Auto, System: Heat/Off/Cool, 2.) Fan: On/Auto, System: On/ Off, 3.) System: On/Off.
K.4. Modine Pro1 T-715M: 41-95°F, Heat/Auto/Off Thermostat with Fan Auto/On switching, 7-day programmable
K.5. A two-stage electronic duct thermostat with field installed temperature sensor, temperature selector and one stage adder.

MODEL NOMENCLATURE

Figure 23.1 – Model Number Designations

Products from Modine are designed to provide indoor air-comfort and ventilation solutions for residential, commercial, institutional and industrial applications.
Whatever your heating, ventilating and air conditioning requirements, Modine has the product to satisfy your needs, including:

HVAC

• Unit Heaters:
  – Gas
  – Hydronic
  – Electric
  – Oil

• Ceiling Cassettes

• Duct Furnaces

• Hydronic Cabinet Unit Heaters, Convectors

• Infrared Heaters

• Make-up Air Systems

• Unit Ventilators

School Products

• Vertical Packaged Classroom HVAC:
  – DX Cooling/Heat Pump
  – Water/Ground Source Heat Pump
  – Horizontal/Vertical Unit Ventilators

Specific catalogs are available for each product. Catalogs 75-136 and 75-137 provide details on all Modine HVAC equipment.

Modine Manufacturing Company
1500 DeKoven Avenue
Racine, Wisconsin 53403-2552
Phone: 1.800.828.4328 (HEAT)
www.modinehvac.com
© Modine Manufacturing Company 2023

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