QMark Catalog 2024-2025

MUH SERIES Unit Heater

UNIT HEATERS

Optional Accessories:

3–20 kW 25–50 kW

A 7 1/4 " B 9 1/2 " C 7 1/4 " D 11 5/16 " E 2 1/4 " L 20 1/2 " M 9 15/16 " N 3 1/4 "

9 7/16 " 14 3/8 " 12 1/8 "

2 1/16 "

3"

28 15/16 " 14 15/16 "

4 1/2 "

UNIT HEATERS

MUH PRO SERIES UNIT HEATER

Optional Mounting Brackets:

Optional Field-Installed Electrical Controls:

CATALOG NO. UPC

COMPATIBILITY SHIP WT.*

CATALOG NO. UPC

DESCRIPTION

ELECTRICAL RATING

8 lbs

B10

685360152295

MUH03–10

Single Pole Internal Thermostat Temp Range: 40°- 85°F Two Stage Internal Thermostat Temp. Range: 40°- 85°F

25A @ 120, 240VAC Res. 22A @ 277VAC Res. 25A @ 120, 240VAC Res. 22A @ 277VAC Res. 125VA

UHMT1

685360152417

MCB105PK 685360173627

(Master Pack, Five B10 Brackets)

10 lbs

UHMT2

685360152424

B20

685360152301

MUH15 & 20

13 lbs

B30

685360152318

MUH25 & 30

Internal Summer Fan Switch 250, 480, 600V.A.C. 1,2 OR 3 PH

Pilot Duty 6A, 600VAC Res. 2 HP

Standard

MCFS

685360046372

15 lbs

B50

685360152325

MUH40 & 50

Remote Summer Fan Switch (Line Voltage) Remote Summer Fan Switch with Relay (24V Coil-Single Pole Normally Open) Heat Recovery Thermostat with Relay (24V Coil-Single Pole Normally Open) i - 120°F, Low - 60°F

MRFS1

685360047089

2 HP, 250-480VAC

3 lbs

CMB10

685360152363

MUH03–10

4 lbs

CMB20

685360152370

MUH15 & 20

6 AFL, 35 ALR, 250VAC, 60Hz. 3 AFL, 18 ALR, 480VAC, 60Hz 6 AFL, 35 ALR, 250VAC, 60Hz 3 AFL, 18 ALR, 480VAC, 60Hz

MRFS2

685360047096

5 lbs

CMB30

685360152387

MUH25 & 30

Ceiling

6 lbs

CMB50

685360152394

MUH40 &50

Introducing the MUH PRO series Unit Heaters. Same great MUH you rely on everyday but now with added safety and control. The new MUH Pro series comes standard with: n A disconnect switch to make maintenance a safe and easy process. n A 24VAC transformer for safer control as well as future proofing in case a low voltage digital thermostat is desired in the future. n A built in single stage thermostat which gives basic control right out of the box. n PRO-SSP Models come with the SmartSeries Plus ready to be remote mounted, to give you BMS communication via BACnet MS/TP, digital touchscreen, 7 day schedule, temporary override or setback, and cooling mode to run only the fan. Benefits of the MUH PRO: n Safety : The integrated disconnect switch and low voltage transformer add additional safety to the base MUH lineup. The disconnect switch gives peace of mind to the maintenance worker because the disconnect switch will cutoff incoming power to the unit so it can be easily repaired. The low voltage transformer no longer requires you to work with line voltage control for easy and safer control. n Better Lead Times : The MUH PRO series heater will be a stock product so they will have the same lead times as the base MUH models we have today meaning no long wait for configured units! n Better Pricing : Enjoy the benefits of the three added accessories without the full cost of a similar configured style unit. n Easy Setup : All of the accessories are installed in the factory so once the product reaches your door it just needs to be wired then set via the built in thermostat and you are good to go. 5 lbs 7 lbs 9 lbs 5 lbs 6 lbs 10 lbs MHRT 685360046945 MPDS25 685360047034 Power Disconnect Switch (3-Pole) MPDS60 685360047041 Power Disconnect Switch (3-Pole) No Diffuser: No diffuser eeded where a straight downflow air pattern is required. For maximum air throw, remove louvers. Any of three diffusers can be added to basic heat r. Louver Diffuser: Permits directi n l (s ight line) air flow as in air curtai application over doorways. Rectangular coverage, Louvers can be turned in either direction. NOTE: Visit website or contact your local representative for additional details

VDMB5

685360152455

MUH03–05

VDMB20

685360152462

MUH07–20

IDEAL SPACES § Factories § Warehouses § Garages § Stairwells § Shipping Docks § Power Stations § Mechanical Rooms MOUNTING LIMITATIONS: Unit heaters should not be used in potentially explosive atmospheres. The finish is not intended for direct salt spray exposure in marine applications or the highly corrosive atmospheres of swimming pools, chemical storage bins, etc. Do not install unit heaters above recommended maximum mounting height. Obstructions must not block unit heater air inlet or discharge. Heaters must be mounted at least 7 ft. above the floor to prevent accidental contact with the heating element or fan blade which could cause injury. Optional Dust Shields: Vertical Ceiling VDMB50 685360152479 MUH25–50

30A @ 600VAC, Res.

80A @ 600VAC, Res.

NOTE: Any field installed options assembled in the factory require added surcharge. See price book for charges. MPDS60 disconnect switch is not suitable for field installation on 7.5kw and 10kw unit heaters. Visit website or contact your local representative for compatibility details. Diffusers for Vertical Mounting:

COLORS § Neutral Gray/Statuary Bronze DIMENSIONS § Varies (see diagram) TEMP RANGE § 40°– 90°F CFM § 350 – 650 UPC 685360150697 685360150673

CATALOG NO.

COMPATIBILITY SHIP WT.*

JRDS8

3–5 KW units

JRDS14

15–20 KW units

JRDS19

685360150680 25–50 KW units

Now compatible with SmartSeries Plus when used with 24VAC control transformer!

Now compatible with SmartSeries Plus when used with 24VAC control transformer!

Suggested Controls

5

1 Y E A R WARRANTY WORKMANSHIP

Y E A R WARRANTY

For more information visit MarleyMEP.com/Products/Unit-Garage-Heaters n Easily Stocked : With all the features and product built as a stock it is easy to keep on the shelves of distributors so you can get the product right when you need it.

E L E M E N T

46 | Unit Heaters

rev: Jul 2022