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INSTALLATION MANUAL
Variable Speed ECM
Modular Multi-position Air Handlers
Models: JMVT Series 208/230 V
- Single-Phase and Three-Phase
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ductwork and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electric heater installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Low voltage control connections . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return air duct attachment and component location . . . . . . . . . . . . . 2
Dimensions and duct connection dimensions . . . . . . . . . . . . . . . . . . 3
Typical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Coil and air handler attachment details . . . . . . . . . . . . . . . . . . . . . . . 4
Duct system - modular blower - right hand . . . . . . . . . . . . . . . . . . . . 4
Gasket location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- that require the drain pan extension . . . . . . . . . . . . . . . . . . . . . . . . 6
- that do not require the drain pan extension . . . . . . . . . . . . . . . . . . . 6
Duct attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ductwork transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Line power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cooling models with and without electric heat wiring . . . . . . . . . . . . . 9
- conventional wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Low voltage connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Stage delay switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pushbutton operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fault list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Heat relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Continuous fan switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Comfort setting selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Physical and electrical data - cooling only . . . . . . . . . . . . . . . . . . . . 16
Electrical data - cooling only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
for single-phase heat kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Section I: General
The modular air handler series provides the flexibility for installation in
any position. This unit may be used for upflow, downflow, horizontal
right, or horizontal left applications.
These units may be located in a closet, utility room, attic, crawl space,
or basement. These versatile models may be used for cooling or heat
pump operation with or without electric heat or indoor coil.
Top or side power and control wiring, color coded leads for control wir-
ing, easy to install drain connections, and electric heaters all combine to
make the installation easy and minimize installation cost.
Electric heat kits are available as field installed accessories. Single-
phase kits are available from 2.5 kW to 25 kW. 208/230V three-phase
kits are available from 10 kW to 25 kW.
Johnson Controls Ducted Systems
List of sections
Required control set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Airflow and comfort setting selection . . . . . . . . . . . . . . . . . . . . . 16
Unit data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Air system adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
List of figures
- conventional wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
- conventional wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- conventional wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Air handler with communicating AC or HP . . . . . . . . . . . . . . . . . . . . 10
Multi-wire terminal connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Variable speed board S1 jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DIP-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DIP-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Variable speed board dip switch locations - heat kit . . . . . . . . . . . . . 17
Duct static measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wiring diagram - ECM - single-phase heat kits . . . . . . . . . . . . . . . . 22
Wiring diagram - 8HK three-phase heat kits 208/230 V . . . . . . . . . . 23
List of tables
Electrical heat: minimum fan CFM for three-phase heat kits . . . . . . 17
Electrical heat only: default fan speeds for FER compliance . . . . . . 18
Aux heat configuration - stage 1 kW dip switch settings . . . . . . . . . . 18
Application factors - rated CFM versus actual CFM . . . . . . . . . . . . . 18
Electrical data for multi-source power supply: 208/230-1-60 . . . . . . 19
Electrical data for multi-source power supply: 208/230-3-60 . . . . . . 20
Aux heat configuration - heat kit selection . . . . . . . . . . . . . . . . . . . . 20
Airflow data (CFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Section II: Safety
This is a safety alert symbol. When you see this symbol on labels
or in manuals, be alert to the potential for personal injury.
Understand and pay particular attention to the signal words
DANGER, WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to alert
against unsafe practices and hazards involving only property damage.
®
6146293-UIM-A-0522
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Summary of Contents for Johnson Controls JMVT Series
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Page 1: Table Of Contents
Variable Speed ECM Modular Multi-position Air Handlers ® Models: JMVT Series 208/230 V - Single-Phase and Three-Phase List of sections General ..........1 Required control set-up . -
Page 2: Safety
Primary drain Primary drain pan 3/4 in. NPT Cabinet brace Secondary drain upflow 3/4-in. NPT Ductwork Ductwork Screw Screw Screw Screw Front view Side view A1756-001 Figure 1: Return air duct attachment and component location Johnson Controls Ducted Systems... -
Page 3: Typical Installation
7/8 (1/2) JMVT16C 22 3/4 1 3/8 (1) 7/8 (1/2) JMVT17C 22 3/4 1 23/32 (1 1/4) JMVT20D 22 3/4 24 1/2 23 1/2 23 1/2 1. All dimensions are in inches. 2. Actual size (conduit size) Johnson Controls Ducted Systems... -
Page 4: Unit Installation
2 in. fiberglass Figure 5: Duct system - modular blower - right hand insulation with vinyl vapor barrier. Note: A = modular air handler width (see column B in Table 1) Johnson Controls Ducted Systems... -
Page 5: Ductwork And Connections
Insulation of ductwork is a must where it runs through an unheated and the rod so that doors can be easily removed for service. space during the heating season or through an uncooled space during the cooling season. Johnson Controls Ducted Systems... -
Page 6: Line Power Connections
A 1 in. filter access rack is built into the unit. Remove the filter access cover and install the correct size filter. Use a standard 1 in. per- manent or throw away filter. See Table 10 for filter sizes. Johnson Controls Ducted Systems... -
Page 7: Electric Heater Installation
Field supplied low voltage wiring can exit the unit through the top right handler. See Figure 13 to Figure 19 for low voltage system wiring. (when the unit is vertical upflow) or the right side panel. See Figure 2. Johnson Controls Ducted Systems... -
Page 8: Cooling Models With And Without Electric Heat Wiring
C (COM) Blue 24 VAC common Field-supplied wiring Reduce airflow and set S1 functionality Used only with outdoor units with an S1 out. Note: Connect the field wiring at the pigtails supplied with the control board harness. Johnson Controls Ducted Systems... -
Page 9: Stage Delay Switches
W2 OUT is only required for heat kits with multiple stages of electric Figure 14: Control wiring - premium ECM blower and HMH7 heat heat. Refer to the wiring diagram for the heat kit used to determine pump - conventional wiring stages of heat. Johnson Controls Ducted Systems... -
Page 10: Multi-Wire Terminal Connection
Failure to seal this hole may allow moisture to enter the control box and damage the control board. Johnson Controls Ducted Systems... -
Page 11: Pushbutton Operation
4. Set the airflow and comfort setting switches to the correct positions. 5. If using an HMH7 horizontal discharge heat pump, follow the Push- Airflow and comfort setting switches button Operation chart in Table 4 to set up S1 functionality. See separate section. Johnson Controls Ducted Systems... -
Page 12: Fault List
1 to 9 Any fault or event code that would prevent the equipment from running See fault codes — — No fault codes in memory Two flashes — — Fault code memory cleared Three flashes — — Johnson Controls Ducted Systems... - Page 13 3. Verify that the outdoor unit is the correct size for the application. 4. Verify that the heat kit is the correct size for the application. 5. Verify there is nothing obstructing the fan. Continued on next page Johnson Controls Ducted Systems...
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Page 14: Heat Relays
1. Verify the airflow set on the air handler control is correct for the air handler model, heat kit, and staging. Fan - low temperature failure 2. Ensure nothing is blocking the blower. 3. Cycle power on the motor and the control. Continued on next page Johnson Controls Ducted Systems... -
Page 15: Continuous Fan Switches
Table 24. An example of switch positions is DIP Switch example: 01010001 shown below in Figure 21. 0 indicates the OFF position and 1 indicates A1709-001 the ON position. The airflow configuration switches are located in the Figure 22: DIP-8 Johnson Controls Ducted Systems... -
Page 16: General
2. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. Refer to the latest edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing. Johnson Controls Ducted Systems... -
Page 17: Electrical Heat Only: Default Fan Speeds For Fer Compliance
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar. 3. For 16C, 17C, and 20D models with 15 kW (8HK*65015**) heat kit, connect the AHU W1 and W2 thermostat inputs together for FER compliance. Johnson Controls Ducted Systems... -
Page 18: Electrical Data For Multi-Source Power Supply: 208/230-1-60
28.4 30.7 8HK(0,1)6500806 41.6 45.3 8HK(0,1)6501006 50.0 54.6 8HK(1,2)6501506 71.7 78.5 8HK(1,2)6502006 93.3 102.4 8HK(0,1)6500206 19.6 20.7 8HK(0,1)6500506 30.4 32.7 8HK(0,1)6500806 43.6 47.3 8HK(0,1)6501006 52.0 56.6 8HK(1,2)6501506 73.7 80.5 8HK(1,2)6502006 95.3 104.4 Continued on next page Johnson Controls Ducted Systems... -
Page 19: Electrical Data For Multi-Source Power Supply: 208/230-3-60
2. MOP = Maximum overcurrent protection device; must be HACR type circuit breaker or time delay fuse. The first circuit includes blower motor amps. Refer to the lat- est edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing. Johnson Controls Ducted Systems... -
Page 20: Duct Static Measurements
• Airflow (CFM) indicator light (LED2) flashes once for every 100 CFM (for example, 12 flashes is 1200 CFM) - blinks are approximate ±10% of actual CFM. Johnson Controls Ducted Systems... -
Page 21: Maintenance
See Table 24 for air handling unit airflow data (CFM). See Table 24 to determine the airflow and make the necessary adjust- ments to keep the CFM within the airflow limitations of the coil. Figure 24: Duct static measurements Johnson Controls Ducted Systems... -
Page 22: Wiring Diagram
CNT - CONTACTOR CC - CONTACTOR COIL RED/WHT USE COPPER CONDUCTORS ONLY. BLACK IF ALUMINUM CONDUCTORS ARE PRESENT, ALL APPLICABLE LOCAL AND NATIONAL CODES MUST BE FOLLOWED. 6135663-UWD-A-0721 Figure 25: Wiring diagram - ECM - single-phase heat kits Johnson Controls Ducted Systems... - Page 23 RED / WHITE FACTORY WIRING LOW VOLTAGE BLACK USE COPPER CONDUCTORS ONLY. IF ALUMINUM CONDUCTORS ARE PRESENT, ALL APPLICABLE LOCAL AND NATIONAL CODES MUST BE FOLLOWED. 6151789-UWD-A-0821 Figure 26: Wiring diagram - 8HK three-phase heat kits 208/230 V Johnson Controls Ducted Systems...
- Page 24 6146293-UIM-A-0522 Notes Johnson Controls Ducted Systems...
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Page 25: Start-Up Sheet
Return air dry bulb temperature Return air wet bulb temperature Total external static pressure Temperature drop Supply air wet bulb temperature Other switches (check all that apply) HUMIDISTAT AC/HP CONT FAN 100% Continued on next page Johnson Controls Ducted Systems... - Page 26 Explain the importance of regular filter replacement and equipment maintenance. Comments and additional job details Subject to change without notice. Published in U.S.A 6146293-UIM-A-0522 Copyright © 2022 by Johnson Controls. All rights reserved. Supersedes: Nothing York International Corp. 5005 York Drive...
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