Honeywell W7754P, W7754Q, W7754K INSTALLATION INSTRUCTIONS

Excel 10

W7754K,P,Q FAN COIL UNIT CONTROLLERS

HONEYWELL EXCEL 5000 OPEN SYSTEM

INSTALLATION INSTRUCTIONS

GENERAL INFORMATION

LonWorks

left DIP switch

(USED = wall

service LED

module connected)

LonWorks

terminal assign-

service

right DIP switch

ment label

button

(USED = terminal

11 enabled)

WALL MOD.

DI2

0345

W7754Kxxxx

UNUSED

USED

230 Vac, 50/60 Hz

D-71101 Schönaich

GND

LED

FAN

DI2

max. 5 VA unloaded

Made in Germany

10A

2 A

triac

+ -

11 12

0.5 A

131415161718

1920 21222324

2526 2A/M

RS1A 23D25

DI1

SET

SENS

GND

III

close open

close open com com

N L

fan

230 V

LON

5 3 4 2

230 V L

OUT1 OUT2

T7460 / T7560

230 Vac

relays

triacs

fuse

terminals for hardwiring

to wall module and/or sensor(s)

removable LonWorks		removable power
terminal plug		supply terminal plug

digital output for low-voltage PWM control of solid-state relay

Fig. 1. Top view of Excel 10 W7754 FCU Controller (optional terminal cover removed)

All three models of the Excel 10 W7754 Fan Coil Unit (FCU) Controller are equipped with a minimum of

•three relays,

•one LED digital output,

•two digital inputs, and

•two analog inputs.

W7754K1001

•230 Vac power supply

•one triac output

•one digital output, for the low-voltage Pulse-Width Modulated (PWM) control of a solid-state relay employed in high-current electrical reheat applications

•three relays

W7754P1000

•230 Vac power supply

•four triac outputs

•four relays

W7754Q1008

•24 Vac power supply

•four triac outputs

•four relays

See also Table 1 on page 3 for a complete overview of terminals and their functions.

BEFORE INSTALLATION

IMPORTANT

It is recommended that the controller be kept at room temperature for at least 24 hours before applying power; this is to allow the evaporation of any condensation resulting from low shipping / storage temperatures.

US requirement, only: This device must be installed in a UL-listed enclosure offering adequate space to maintain the segregation of line voltage field wiring and Class 2 field wiring.

Further, depending on the hardware requirements of your specific application, you can choose from among models equipped with the following additional features:

CAUTION

To avoid electrical shock or equipment damage, you must switch OFF the power supply before attaching / removing connections to/from any terminals.

® U.S. Registered Trademark

EXCEL 10 W7754K,P,Q FAN COIL UNIT CONTROLLERS

MOUNTING

All models have the same dimensions (W x L x H =

110 x 180 x 60 mm) (see Fig. 2) conforming to IP20 (without optional terminal protection cover) or IP30 (with optional terminal protection cover; width is then 130 mm).

protectionterminal

(optional)cover

59.5

110

130

Fig. 2. Excel 10 W7754 dimensions (in mm)

The Excel 10 W7754 FCU Controller is suitable for mounting on a standard rail (DIN EN 50022-35 x 7,5), on walls/ceilings, as well as for installation in wiring cabinets or fuse boxes.

DIN Rail Mounting/Dismounting

screwing nose		screwing nose
(oval hole)	eyelets for	(round hole)
	eyelets for
	cable binders

eyelet for

eyelets for

cable binder

cable binders

screwing nose

stirrup;

pull to

screwing nose

(oval hole)

dismount from rail

(oval hole)

Fig. 3. Housing base (view from below)

The Excel 10 W7754 FCU Controller can be mounted onto the DIN rail simply by snapping it into place. It is dismounted by gently pulling the stirrup located in the base of the housing (see Fig. 3). When mounted on a DIN rail, the unit must be secured in place with a stopper to prevent sliding.

Wall/Ceiling Mounting/Dismounting

The Excel 10 W7754 FCU Controller can be mounted on walls or ceilings in any desired orientation. In the case of ceiling mounting, however, it should not be operated at ambient temperatures exceeding 50 °C. The unit is mounted by inserting 3.5-mm dowel screws through the corresponding screwing noses.

154 mm

round hole

(diameter: 4 mm)

100 mm

oval hole

(4x7 mm)

Fig. 4. Drilling template (view from above)

CAUTION

In order to conform with IP30, when installed on walls or ceilings, the Excel 10 W7754 FCU Controller must be equipped with the optional terminal protection cover (see section "Terminal Protection Cover" on page 7).

After mounting the Excel 10 W7754 FCU Controller onto the wall or ceiling, provide for cable access by snipping out the terminal protection cover's cut-out tabs and snap it (by hand) into place on the housing. To remove the cover, place a screwdriver in the leverage slot and pry it loose.

Terminal Assignment

The Excel 10 W7754 FCU Controller features two rows of terminal blocks located on one side for the connection of cables to the relays, inputs, and outputs as well as for connecting the removable power supply terminal plug and removable LONWORKS terminal plug.

NOTE: All high-voltage terminal blocks are orange-colored.

Depending on the given hardware model, the controllers have different power supplies and are equipped with different numbers of triac outputs, relay outputs, etc. See Table 1 on page 3.

Every Excel 10 W7754 FCU Controller is therefore equipped with a terminal assignment label on the top of the housing (see Fig. 1 on page 1). This label is an adhesive sticker displaying the maximum complement of I/O's. Terminals not present in a given model are indicated by dotted lines.

NOTE: According to VDE guidelines, it is not allowed to mix low-voltage and high-voltage signals on the relays.

See also Table 3 on page 6.

EN1B-0304GE51 R0506C

EXCEL 10 W7754K,P,Q FAN COIL UNIT CONTROLLERS

Table 1. W7754 Controller: Overview of terminals and functions (by model)

	ter-	function		model
	minal #	function	K	P	Q
	minal #		K	P	Q
1+2		receiving/sending data on the LONWORKS network; removable plug	X	X	X
		a digital input, configurable (using the LNS plug-in) to read input e.g. from a
3		hardwired window contact, occupancy sensor, etc.; suitable for dry contacts, only;	X	X	X
		max. voltage at open contact = 5 Vdc
		an analog input, permanently configured to read input from a hardwired wall
4		module's temperature setpoint adjustment knob; can be enabled/disabled using	X	X	X
		the left DIP switch(3)
		an analog input, permanently configured to read input from a hardwired wall
5		module's room temperature sensor (use NTC20k sensor, only; accuracy [w/o	X	X	X
		sensor] = 0.5 °C at 25 °C); can be enabled/disabled using the left DIP switch(3)
6		GND serving terminals 4, 5, 9, 10, and 11	X	X	X
7		not used	--	--	--
8		GND serving terminal 3	X	X	X
		a digital output, permanently configured to write output switching the LED of a
9		hardwired wall module ON/OFF; can be enabled/disabled using the left DIP	X	X	X
		switch(3); max. voltage = 5 Vdc; max. current = 5 mA
		an analog input, permanently configured to read input on whether a hardwired wall
10		module's 3-speed fan control knob has been set to AUTO, OFF, LOW, MEDIUM,	X	X	X
10		or HIGH and whether its "occupancy override" button has been pressed; can be	X	X	X

		enabled/disabled using the left DIP switch(3)
		a digital input, permanently configured to read input on whether a window contact
11		is "open" or "closed"; can be enabled/disabled using the right DIP switch(3);	X	X	X
		suitable for dry contacts, only; max. voltage at open contact = 5 Vdc
12		not used	--	--	--
		relay 4, permanently configured to write output to a hardwired electrical reheat coil,
13+14		switching it ON/OFF; switching voltage = 24...230 Vac; switching current =	--	X	--
		0.05...10 A
15		a common terminal for terminals 16, 17, and 18	X	X	X
16(1)		relay 3, permanently configured to write output to a hardwired three-speed fan,	X	X	X
		setting it to HIGH
17(1)		relay 2, permanently configured to write output to a hardwired three-speed fan,	X	X	X
		setting it to MEDIUM
18(1)		relay 1, permanently configured to write output to a hardwired three-speed fan,	X	X	X
		setting it to LOW
19(2)		a triac output, permanently configured to write output to OUT1, closing it	--	X	X
20(2)		a triac output, permanently configured to write output to OUT1, opening it	--	X	X
21(2)		a triac output, permanently configured to write output to OUT2, closing it	--	X	X
22(2)		a triac output, permanently configured to write output to OUT2, opening it	X	X	X
23(2)		a common terminal for terminals 19 and 20	X	X	X
24(2)		a common terminal for terminals 21 and 22	X	X	X
25+26		the "N" (25) and "L" (26) terminals of power supply; 24 Vac (±20%), 50/60 Hz or	230 Vac	230 Vac	24 Vac
25+26		230 Vac (-15%/+10%), 50/60 Hz, depending upon model; removable plug	230 Vac	230 Vac	24 Vac

	(1) If all three relays (terminals 15 [common], 16, 17, and 18) are switched OFF, the three-speed		fan will likewise be switched
	OFF. Switching voltage = 24...230 Vac; switching current = 0.05...3 A (max. 3 A for all three relays together).

(2) Switching voltage = 230 Vac (230-V models) or 24 Vac (24-V models), max. switching current = 0.5 A; max. peak (10 sec) current = 1 A

(3) Please use an appropriate tool (e.g. ball-point pen) to operate the DIP switch.

Additionally, the W7754K1001 features an extra socket (2-pin connector located to the left of the terminal blocks; see Fig. 1 on page 1) containing a digital output suitable for attachment to a solid-state relay (use only Carlo Gavazzi RS1A23D25-P64; max. voltage = 12 Vdc; max. current = 12 mA at 10 Vdc) employed for low-voltage PWM control in high-current electrical reheat applications.

Using Honeywell's LNS plug-in, you can configure the controller's triac outputs and relay outputs for a variety of different functions. E.g. the triac outputs can be configured for connection to either a floating drive or to a thermal actuator. Once the outputs have been configured, the corresponding devices can be directly connected to them.

3	EN1B-0304GE51 R0506C

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